build(publish): publish to maven.bitsycore.com alongside GitHub Packages

- Bitsycore Reposilite repo in root + bridge publishing blocks
- per-host Bitsycore publish step in the workflow (task names derived
  from the matrix); releases repo has redeployment enabled so plain
  retries are safe
- workflow_dispatch fallback trigger (run with --ref <tag>)
- bridge: default skiko fork version -> 0.150.1-mingw.2 (republished to
  both repos so consumers need no GitHub Packages auth)
- README + bridge README: maven.bitsycore.com first, GH Packages fallback

.github/workflows/publish.yml

@@ -7,6 +7,9 @@ on:
   push:
     tags:
       - 'v*'
+  # Manual fallback: run with --ref <tag> so github.ref_name is the tag itself
+  # (PUBLISH_VERSION is derived from it).
+  workflow_dispatch:
 
 # Never overlap two publish runs for the same tag.
 concurrency:
@@ -103,16 +106,13 @@ jobs:
       # intrinsic K/N's LLD can't resolve is aliased to msvcrt's _setjmpex at
       # link time via --defsym in sdl3.def.
 
-      # Build the static native deps from scripts/build-sdl/build-sdl.properties.
-      # Only Windows ships the SDL3 renderer (no Skiko on mingw), so only it needs
-      # SDL3_ttf / SDL3_image / FreeType (SDL3_ttf text, SDL3_image decode, FreeType
-      # icon-axis rasterisation). macOS / Linux publish the Skia renderer — Skiko
-      # handles text / images / icons — so they only need base SDL3 for the main
-      # loop (windowing / input / audio / filesystem). Matches the cinterop guard
-      # in compose/ui/ui/build.gradle.kts, which skips those three cinterops on the
-      # Skia targets. Cached against the manifest + scripts so version bumps
-      # invalidate cleanly; bump the `v3` key when the toolchain (runner OS,
-      # compiler flavour, K/N sysroot) changes without a scripts/build-sdl/ edit.
+      # Build the static SDL3 lib (scripts/build-sdl/build-sdl.properties). Every
+      # target renders through Skia now, so all platforms need only base SDL3 for
+      # the main loop (windowing / input / audio / filesystem) — the from-scratch
+      # SDL renderer and its SDL3_ttf / SDL3_image / FreeType deps were removed.
+      # Cached against the manifest + scripts so version bumps invalidate cleanly;
+      # bump the `v3` key when the toolchain (runner OS, compiler flavour, K/N
+      # sysroot) changes without a scripts/build-sdl/ edit.
       - name: Cache libs/
         id: cache-libs
         uses: actions/cache@v4
@@ -120,16 +120,10 @@ jobs:
           path: libs
           key: sdl-libs-v3-${{ matrix.host }}-${{ hashFiles('scripts/build-sdl/**') }}
 
-      # Windows: full SDL3 renderer stack. macOS / Linux (Skia): base SDL3 only.
       - name: Build static native deps
         if: steps.cache-libs.outputs.cache-hit != 'true'
         shell: bash
-        run: |
-          if [ "${{ matrix.host }}" = "windows" ]; then
-            python3 scripts/build-sdl/build-all.py
-          else
-            python3 scripts/build-sdl/build-all.py sdl3
-          fi
+        run: python3 scripts/build-sdl/build-all.py
 
       # src/vendor/ trees are gitignored — a fresh checkout has zero vendored
       # androidx.compose.* files. Sync copies them in from the upstream refs
@@ -160,16 +154,35 @@ jobs:
           VER="${PUBLISH_VERSION#v}"
           OWNER="${GITHUB_REPOSITORY%%/*}"
           # Keep in sync with the module list in settings.gradle.kts.
-          MODULES="ui ui-util ui-geometry ui-unit ui-backhandler ui-tooling-preview animation animation-core animation-graphics foundation foundation-layout material3 material-ripple window material-symbols navigation3-ui components-resources"
+          MODULES="sdl-core ui ui-graphics ui-text ui-util ui-geometry ui-unit ui-backhandler ui-tooling-preview animation animation-core animation-graphics foundation foundation-layout material3 material-ripple desktop-native-window material-symbols navigation3-ui components-resources"
           case "${{ matrix.host }}" in
             macos)   SUFFIXES="-macosarm64" ;;
             linux)   SUFFIXES="-linuxx64 -linuxarm64" ;;
             windows) SUFFIXES="_ROOT_ -mingwx64" ;;
           esac
+          # Published group per module — mirrors the per-area com.bitsycore groups
+          # in root build.gradle.kts. Project-only modules (sdl-core, material-symbols)
+          # fall through to com.bitsycore.compose.sdl; the GitHub Packages Maven
+          # package name is "<group>.<artifact>".
+          group_of() {
+            case "$1" in
+              ui|ui-graphics|ui-text|ui-util|ui-geometry|ui-unit|ui-backhandler|ui-tooling-preview)
+                                      echo "com.bitsycore.compose.ui" ;;
+              foundation|foundation-layout)                echo "com.bitsycore.compose.foundation" ;;
+              animation|animation-core|animation-graphics) echo "com.bitsycore.compose.animation" ;;
+              material3)              echo "com.bitsycore.compose.material3" ;;
+              material-ripple)        echo "com.bitsycore.compose.material" ;;
+              components-resources)   echo "com.bitsycore.compose.components" ;;
+              navigation3-ui)         echo "com.bitsycore.navigation3" ;;
+              desktop-native-window)  echo "com.bitsycore.compose" ;;
+              *)                      echo "com.bitsycore.compose.sdl" ;;
+            esac
+          }
           host_packages() {
             for m in $MODULES; do
+              g=$(group_of "$m")
               for s in $SUFFIXES; do
-                if [ "$s" = "_ROOT_" ]; then echo "com.bitsycore.compose.sdl.$m"; else echo "com.bitsycore.compose.sdl.$m$s"; fi
+                if [ "$s" = "_ROOT_" ]; then echo "$g.$m"; else echo "$g.$m$s"; fi
               done
             done
             if [ "${{ matrix.host }}" = "windows" ]; then
@@ -183,7 +196,7 @@ jobs:
             host_packages | while read -r pkg; do
               vid=$(curl -s -H "Authorization: Bearer $GITHUB_TOKEN" \
                 "https://api.github.com/users/$OWNER/packages/maven/$pkg/versions?per_page=100" \
-                | jq -r --arg v "$VER" '[.[]? | select(.name==$v) | .id] | first // empty')
+                | jq -r --arg v "$VER" 'if type=="array" then ([.[] | select(.name==$v) | .id] | first // empty) else empty end')
               [ -z "$vid" ] && continue
               code=$(curl -s -o /dev/null -w "%{http_code}" -X DELETE \
                 -H "Authorization: Bearer $GITHUB_TOKEN" \
@@ -214,6 +227,33 @@ jobs:
           echo "::error::Publish failed after 3 attempts"
           exit 1
 
+      # Second target: the self-hosted Reposilite instance. Same publications,
+      # task names derived from the matrix by swapping the repository name.
+      # The releases repo has redeployment enabled, so a plain retry after a
+      # mid-upload failure is safe (no GitHub-Packages-style 409 poisoning).
+      - name: Publish to maven.bitsycore.com
+        shell: bash
+        env:
+          BITSYCORE_MAVEN_USER: ${{ secrets.BITSYCORE_MAVEN_USER }}
+          BITSYCORE_MAVEN_TOKEN: ${{ secrets.BITSYCORE_MAVEN_TOKEN }}
+        run: |
+          set -e
+          BITSY_TASKS=$(echo "${{ matrix.tasks }}" | sed 's/GitHubPackagesRepository/BitsycoreRepository/g')
+          for attempt in 1 2 3; do
+            echo "::group::Bitsycore publish attempt $attempt"
+            if ./gradlew $BITSY_TASKS --continue --no-daemon --stacktrace; then
+              echo "::endgroup::"
+              exit 0
+            fi
+            echo "::endgroup::"
+            if [ $attempt -lt 3 ]; then
+              echo "::warning::Bitsycore publish attempt $attempt failed — retrying"
+              sleep 30
+            fi
+          done
+          echo "::error::Bitsycore publish failed after 3 attempts"
+          exit 1
+
       # Release binaries for the host target — the binary plus the data.kres
       # (bundled composeResources + fonts + subset icon-font). Each app's
       # linkReleaseExecutable<Target> auto-runs its data.kres zip task —
@@ -242,8 +282,21 @@ jobs:
           for app in demo apidemo; do
             src="$app/build/bin/$target_dir/releaseExecutable"
             zip_path="$(pwd)/dist/$app-$version-$target_dir.zip"
+            files=("$src/$app.${{ matrix.exe_ext }}" "$src/data.kres")
+            # Windows Skia leg ships two runtime sidecars next to the exe — the
+            # skiko fork DLL and Skia's ICU data (icudtl.dat) — provisioned by the
+            # bridge plugin after linkReleaseExecutableMingwX64. The exe cannot run
+            # without them, so include them (and fail loudly if a provision regressed).
+            if [ "${{ matrix.exe_ext }}" = "exe" ]; then
+              for sidecar in skiko-windows-x64.dll icudtl.dat; do
+                if [ ! -f "$src/$sidecar" ]; then
+                  echo "::error::Missing Windows runtime sidecar: $src/$sidecar"; exit 1
+                fi
+                files+=("$src/$sidecar")
+              done
+            fi
             python3 -c 'import sys,os,zipfile; z=zipfile.ZipFile(sys.argv[1],"w",zipfile.ZIP_DEFLATED,compresslevel=9); [z.write(f,os.path.basename(f)) for f in sys.argv[2:]]; z.close()' \
-              "$zip_path" "$src/$app.${{ matrix.exe_ext }}" "$src/data.kres"
+              "$zip_path" "${files[@]}"
           done
           ls -la dist/
 

CLAUDE.md

@@ -7,14 +7,22 @@ context — read it first, then look at the files it points to.
 
 - [README.md](README.md) — public overview + quickstart (bridge plugin,
   `nativeComposeWindow`, sample apps).
-- [RENDERER.md](RENDERER.md) — the rendering layer: architecture, the retained-
-  layer engine, convergence decisions, learnings, and open work. Read it before
-  touching any renderer, graphics-actual, or layer-engine code.
+- Renderer — one Skia `RenderBackend` (Metal on macOS / OpenGL on Linux+Windows /
+  CPU-raster fallback) driving upstream's vendored GraphicsLayer + Canvas engine.
+  Retained per-node display lists: transform / alpha / clip changes REPLAY without
+  re-recording (only a content change or resize re-records; dirty-region rendering
+  is a non-goal). Text is a reduced-local port over Skia `skparagraph`. Read these
+  before touching renderer / graphics-actual / layer-engine code:
+  `SkiaRenderBackend.kt`, `RenderBackend.kt`, `GpuMode.kt`, `ComposeRootHost.kt`
+  (root host + snapshot-observation sweep — omitting `clearInvalidObservations()`
+  once leaked the whole graph), `ComposeOwner.kt`, and `SkiaParagraph.native.kt` /
+  `SkiaParagraphEngine.kt`. Open renderer/fidelity work lives in [PLAN.md](PLAN.md).
 - [TOOLING.md](TOOLING.md) — build/vendor/verify scripts and workflows
   (build-sdl, sync + drift checks, parity, probe, profiler, coverage,
   verify-mac) + the version map and the ref-bump / release runbooks.
-- [TODO.md](TODO.md) — audited list of no-ops, stubs, and hardcodes left in the
-  port, with severity, plus what's missing for a stable 1.12 release.
+- [PLAN.md](PLAN.md) §2 — audited list of no-ops, stubs, and hardcodes left in the
+  port, with P0/P1/P2 severity, plus the road-to-1.0.0 fidelity / SDL / release work
+  (this subsumes the former TODO.md, which was never committed).
 - This file — architecture, module layout, vendoring rules, source-set
   hierarchy, density flow, conventions, and common pitfalls.
 
@@ -31,9 +39,9 @@ Rendering is **Skia everywhere** behind one `RenderBackend` — Metal / OpenGL
 - **Windows (mingwX64)** links the bitsycore skiko FORK — skiko+Skia compiled
   into `skiko-windows-x64.dll` with a flat extern-C surface, bound from K/N via
   an embedded GNU import lib, published to GitHub Packages as
-  `org.jetbrains.skiko:skiko:0.150.1-mingw.1` (override with
+  `com.bitsycore.skiko:skiko:0.150.1-mingw.1` (override with
   `-PskikoMingwVersion`). The runtime DLL is auto-provisioned next to the exe by
-  the bridge plugin (`installWindowsSkiaDll`). See SKIKO-MINGW-FEASIBILITY.md.
+  the bridge plugin (`installWindowsSkiaDll`).
 
 Windowing, input, audio, filesystem access, and the OS-integration surface
 (file dialogs, clipboard, "open in Finder/Explorer"…) all go through
@@ -46,8 +54,11 @@ re-implements the layers on top (`androidx.compose.ui.*`, `.foundation.*`,
 ## Module layout
 
 Library modules mirror upstream Compose Multiplatform's `compose/` tree.
-Only `:window` is the SDL integration layer ("Compose SDL" — SDL3 main loop)
-and lives under `compose/sdl/`.
+The SDL layer is two modules: `:sdl-core` (the NAKED sdl3 cinterop + platform
+primitives — zero Compose dep, like `skiko`) at `sdl/sdl-core/`, and
+`:desktop-native-window` (the SDL3 main-loop shell + app entry point) at
+`compose/desktop/native/window/`. `:ui` depends on `:sdl-core` and its renderer
++ SDL↔Compose bridges pick the cinterop from it.
 
 One Gradle module per upstream artifact; the directory mirrors the upstream
 `compose/` path, the gradle path is kept short (redirected via `projectDir`).
@@ -55,10 +66,18 @@ One Gradle module per upstream artifact; the directory mirrors the upstream
 ```
 compose/
 ├── ui/
-│   ├── ui/                          → :ui        — androidx.compose.ui.* (ui + ui-graphics + ui-text) +
-│   │                                               com.compose.sdl.* — the sdl3 cinterop + the Skia renderer
-│   │                                               pipeline live here. ui-graphics/ui-text can't split off: their
-│   │                                               Canvas / Paragraph `expect`s are the renderer's `actual`s (same-module).
+│   ├── ui/                          → :ui        — androidx.compose.ui.* CORE (Modifier, LayoutNode,
+│   │                                               composition, semantics, input, focus) + com.compose.sdl.* —
+│   │                                               the Skia RenderBackend + GPU bridges + the SDL↔Compose
+│   │                                               bridges (events / clipboard / cursors / window). Depends on
+│   │                                               :ui-graphics, :ui-text, :sdl-core. (ui-graphics + ui-text +
+│   │                                               the sdl3 cinterop were split OUT — upstream layout.)
+│   ├── ui-graphics/                 → :ui-graphics — androidx.compose.ui.graphics.* + the Skia actuals
+│   │                                               (SkiaBackedCanvas/Path/Paint, GraphicsLayer, SkiaImageCache,
+│   │                                               painter/image + resource seams). → skiko; SDL-free.
+│   ├── ui-text/                     → :ui-text   — androidx.compose.ui.text.* + the skiko text engine
+│   │                                               (SkiaParagraph → NativeParagraphOps → SkiaFonts, IconFont,
+│   │                                               NamedFont). → :ui-graphics, skiko; SDL-free.
 │   ├── ui-util/                     → :ui-util       — androidx.compose.ui.util.* (+ Experimental/InternalComposeUiApi)
 │   ├── ui-geometry/                 → :ui-geometry   — androidx.compose.ui.geometry.*
 │   ├── ui-unit/                     → :ui-unit       — androidx.compose.ui.unit.*
@@ -79,9 +98,15 @@ compose/
 │   └── material3/                   → :material3   — androidx.compose.material3.*
 ├── material/
 │   └── material-ripple/             → :material-ripple — androidx.compose.material.ripple.*
-└── sdl/                             ("Compose SDL" — project modules, not upstream CMP artifacts)
-    └── window/                      → :window     — nativeComposeApp { Window(...) {} } multi-window
-                                                    shell + SDL3 main loop; nativeComposeWindow() wrapper
+└── desktop/native/window/           → :desktop-native-window — nativeComposeApp { Window(...) {} }
+                                                    multi-window shell + SDL3 main loop; nativeComposeWindow()
+                                                    wrapper (project app-shell, not an upstream CMP artifact).
+                                                    Published as com.bitsycore.compose:desktop-native-window.
+
+sdl/
+└── sdl-core/                        → :sdl-core   — the NAKED sdl3 cinterop + platform primitives
+                                                    (zero Compose dep, like skiko); the single `sdl3` cinterop
+                                                    lives here. :ui depends on it. com.bitsycore.compose.sdl:sdl-core.
 
 utils/
 └── material-symbols/                → :material-symbols — codepoints + all three style objects
@@ -181,7 +206,7 @@ libs/                → gitignored per-host static SDL3 output of
                       scripts/build-sdl/build-all.py on Windows
 ```
 
-Module PATHS stay short (`:ui`, `:foundation`, `:window`, …) —
+Module PATHS stay short (`:ui`, `:foundation`, `:desktop-native-window`, …) —
 `settings.gradle.kts` redirects `projectDir` for each so build files across
 the repo stay terse. `androidx.collection` is a plain Maven dependency
 (`androidx.collection:collection`), not a module — same as other simple
@@ -193,23 +218,27 @@ androidx KMP libs.
 :ui  ←  :animation-core  ←  :animation          ←  :foundation  ←  :material3  ← :demo, :apidemo
 :ui  ←  :foundation-layout  ←──────────────────────┘   ↑              ↑
                         :material-ripple  ←────────────┘──────────────┘
-:foundation, :animation-core  ←  :window ;  :foundation, :material3  ←  :material-symbols
+:foundation, :animation-core  ←  :desktop-native-window ;  :foundation, :material3  ←  :material-symbols
 ```
 
 All edges are `api`, so a consumer of `:foundation` / `:material3` transitively
 sees the split modules. Full DAG: `:ui-util → collection`; `:ui-geometry → :ui-util`;
 `:ui-unit → :ui-geometry, :ui-util`; `:ui-backhandler → :ui-util, navigationevent`;
-`:ui → :ui-util, :ui-geometry, :ui-unit, :ui-backhandler`; `:animation-core → :ui`;
+`:sdl-core → sdl3 cinterop (NAKED — no Compose)`;
+`:ui-graphics → :ui-geometry, :ui-unit, :ui-util, skiko`;
+`:ui-text → :ui-graphics, :ui-unit, :ui-util, skiko`;
+`:ui → :ui-graphics, :ui-text, :sdl-core, :ui-util, :ui-geometry, :ui-unit, :ui-backhandler`; `:animation-core → :ui`;
 `:foundation-layout → :ui`; `:animation → :animation-core, :foundation-layout`;
 `:foundation → :animation, :foundation-layout, :animation-core, :ui`;
 `:material-ripple → :foundation, :animation-core`;
 `:material3 → :foundation, :material-ripple, :animation-core, :foundation-layout`.
 
-`:ui` is the renderer/cinterop hub (the ui-graphics + ui-text `expect`s resolve to
-its Skia renderer `actual`s). The pure lower artifacts (`:ui-util`,
-`:ui-geometry`, `:ui-unit`, `:ui-backhandler`) are split out below it. Everything
-above `:ui` can only touch renderer / cinterop internals via its public surface.
-`:window` depends on `:ui` + `:foundation` (needs `LazyList`-style scaffolding to
+`:ui` is the Compose core + the Skia RenderBackend + the SDL↔Compose bridges; it
+sits on `:ui-graphics` / `:ui-text` (the graphics/text primitives + their skiko
+`actual`s, SDL-free) and the naked `:sdl-core` (sdl3 cinterop). The pure lower
+artifacts (`:ui-util`, `:ui-geometry`, `:ui-unit`, `:ui-backhandler`) are below.
+Everything above `:ui` touches renderer internals only via its public surface.
+`:desktop-native-window` depends on `:ui` + `:foundation` (needs `LazyList`-style scaffolding to
 install the popup / scaffold layer at the composition root).
 
 ## Vendoring philosophy — read this before writing any `androidx.compose.*` code
@@ -292,11 +321,12 @@ Two categories of code live in each module:
    reconciled by hand. This is fine; do it when the edit is small and
    the file is unlikely to churn upstream.
 
-4. **Skiko-specific things go in `:ui/src/skikoRendererMain/`.** When upstream
-   ships a `.skiko.kt` file that uses Skiko's Canvas / Paragraph / …, the
-   `.skiko.kt` variant is fine to vendor into `skikoRendererMain` (the Skia
-   drawing pipeline — `SkiaCanvas.kt`, `SkiaTextRenderer.kt`,
-   `SkiaImageCache.kt`, …). All native targets attach this source set;
+4. **Skiko-specific things go in a `skikoRendererMain` source set.** When
+   upstream ships a `.skiko.kt` file that uses Skiko's Canvas / Paragraph / …,
+   the `.skiko.kt` variant is fine to vendor into `skikoRendererMain` — graphics
+   into `:ui-graphics` (`SkiaBackedCanvas.skiko.kt`, `SkiaImageCache.kt`, …),
+   text into `:ui-text` (`SkiaParagraphEngine.kt`), the render backend into
+   `:ui` (`SkiaRenderBackend.kt`). All native targets attach this source set;
    mingwX64 layers its fork actuals on top under `skikoRendererMingwMain`.
 
 5. **Multi-OS project code goes through SDL3, not hand-rolled per-target
@@ -315,7 +345,9 @@ call sites don't care.
 
 ## Source-set hierarchy (:ui only)
 
-`:ui` owns the `sdl3` cinterop + the Skia renderer pipeline. Its source-set tree:
+`:ui` owns the Skia RenderBackend + GPU bridges. The SAME source-set tree is used
+by `:ui-graphics` / `:ui-text` for their skiko `actual`s (only the deps differ);
+the `sdl3` cinterop lives in `:sdl-core` (see below). `:ui`'s tree:
 
 ```
 commonMain
@@ -339,12 +371,15 @@ fails to come up.
 
 ### Cinterop
 
-`:ui` owns ONE cinterop in `src/nativeInterop/cinterop/`: `sdl3` (SDL_Window /
-SDL_Event / SDL_GetBasePath / clipboard / dialogs / GL+Metal context /
-SDL_Renderer-for-CPU-raster). It has no siblings, so there's no
-`depends = <sibling>` propagation to worry about — cinterop `.def` files list
-each other under `depends =` and Gradle does NOT auto-add a sibling cinterop's
-klib to the `-library` list, but with a single cinterop that gotcha is moot.
+The `sdl3` cinterop lives in the NAKED `:sdl-core` module
+(`sdl/sdl-core/src/nativeInterop/cinterop/sdl3.def`: SDL_Window / SDL_Event /
+SDL_GetBasePath / clipboard / dialogs / GL+Metal context / SDL_Renderer-for-CPU-
+raster). `:ui` depends on `:sdl-core` (`api`), so `:ui`'s renderer + SDL↔Compose
+bridges — and `:desktop-native-window` downstream — see `sdl3.*` and inherit SDL3's static-lib +
+linker-opt propagation (the `.def` bakes in `staticLibraries = libSDL3.a` + the
+per-OS `linkerOpts`, carried through the klib chain to the final exe, so apps
+link SDL just by depending on `:ui`/`:desktop-native-window`). `:sdl-core` has NO Compose
+dependency, so `:ui → :sdl-core` is cycle-free — the compose way (like `ui → skiko`).
 
 ## Density flow (Option B — layout in physical pixels)
 
@@ -379,7 +414,7 @@ Passing raw `px.dp` will double-scale on Retina.
 ./gradlew :apidemo:runDebugExecutableLinuxX64
 
 # Windows (from Windows — mingw cross-build from macOS/Linux fails at cinterop).
-# Links the bitsycore skiko FORK from GitHub Packages (org.jetbrains.skiko:skiko:
+# Links the bitsycore skiko FORK from GitHub Packages (com.bitsycore.skiko:skiko:
 # 0.150.1-mingw.1, override -PskikoMingwVersion); the bridge plugin drops
 # skiko-windows-x64.dll next to the exe (installWindowsSkiaDll).
 gradlew.bat :demo:runDebugExecutableMingwX64
@@ -446,7 +481,7 @@ drift / vendor-clean guardrails are in
 ## Key files by area — start here when you need to find something
 
 ### Renderer + main loop
-- `compose/sdl/window/src/nativeMain/…/ComposeWindow.kt` — main loop,
+- `compose/desktop/native/window/src/nativeMain/…/ComposeWindow.kt` — main loop,
   recomposer lifecycle, SDL event dispatch, composition-local seeding.
 - `compose/ui/ui/src/nativeMain/…/RenderBackend.kt` — the interface.
 - `compose/ui/ui/src/nativeMain/…/GpuMode.kt` — sealed driver picker
@@ -464,14 +499,15 @@ drift / vendor-clean guardrails are in
   alpha bridge).
 - `compose/ui/ui/src/commonMain/…/node/NodeApplier.kt`.
 
-### Text
-- `compose/ui/ui/src/nativeMain/…/ui/text/SdlParagraph.native.kt` — the
-  bridged `Paragraph` implementation (measurement, hit-test, line metrics,
-  span painting).
-- `compose/ui/ui/src/nativeMain/…/ui/text/ParagraphFactories.native.kt` —
+### Text (all in `:ui-text` now)
+- `compose/ui/ui-text/src/nativeMain/…/ui/text/SkiaParagraph.native.kt` — the
+  `Paragraph` actual (skiko-free; the 30 interface methods over plain data),
+  driving the skiko engine through the `NativeParagraphOps` seam.
+- `compose/ui/ui-text/src/skikoRendererMain/…/renderer/skia/SkiaParagraphEngine.kt`
+  — `SkiaParagraphOps` (builds/queries the real skiko `skparagraph`) + `SkiaFonts`
+  (data.kres bytes → skiko Typeface; the port's family/variable-axis model).
+- `compose/ui/ui-text/src/nativeMain/…/ui/text/ParagraphFactories.native.kt` —
   actuals for the `Paragraph(…)` / `ParagraphIntrinsics(…)` factory family.
-- `compose/ui/ui/src/commonMain/…/text/TextMeasurer.kt` — `NativeTextMeasurer`
-  interface (implemented by `SkiaTextRenderer`).
 
 ### Icons
 - `compose/foundation/foundation/src/nativeMain/…/icons/IconFontIcon.kt` —
@@ -507,7 +543,7 @@ profiler. Quick rules of thumb:
 - Slow frame → **profiler** first (`CDN_PROFILE=1`), optimize second.
 - Any renderer change → the **`verify-mac`** runbook gates it before commit.
 
-See [RENDERER.md](RENDERER.md) for the renderer work these support.
+Open renderer / fidelity / release work is tracked in [PLAN.md](PLAN.md).
 
 ## Conventions
 

PLAN.md

@@ -0,0 +1,736 @@
+# ROAD TO 1.0.0
+
+**Objective:** get ComposeNativeSDL3 **as close to upstream Compose Multiplatform as
+possible** — vendor every file we can instead of rewriting, stay performant, and look
+faithful (ideally pixel-identical across macOS / Linux / Windows). The port is already at
+99% upstream API coverage with maximal vendoring and no steady-state perf gap on
+macOS/Metal; the remaining 1.0.0 work is **cross-platform rendering fidelity** (Windows
+skiko-fork divergences), **completing native-actual stubs**, and the release mechanics
+(1.12.0-stable re-pin + WIN-SMOKE).
+
+**Status / handoff:** the macOS/Linux-verifiable work is done and committed on `main` (see
+**"Landed toward 1.0.0"** below — don't redo it). The remaining blockers need a **Windows host**
+→ jump to **"▶ Continuing on Windows (mingwX64) — START HERE"**. This file is self-contained: it
+has the build/run commands, the exact confirm steps, the macOS baseline data to diff against, and
+per-task fixes. So on Windows you can say **"continue PLAN.md"** and have everything.
+
+## Definition of done for 1.0.0
+
+- [x] No text tofu on any platform — Windows tab fix **CONFIRMED on-device** (§1a, 2026-08-04:
+      literal `\t`→space, no `.notdef`); CJK / color-emoji / control chars render clean too (§1c).
+- [x] Fork-vs-official divergence surface (FontMgr, gamma, ICU) **audited on native Windows**
+      (2026-08-04): metrics == JVM (§1b), FontMgr fallback works (CJK + color emoji, §1c), ICU
+      classification works (§1c). Net — the fork's Skia matches upstream; the only deltas are its
+      thin extern-C bindings, handled in shared Kotlin (LineMetrics reconstruction). No fork-side
+      fix needed for 1.0.
+- [~] Native-actual fidelity blockers closed: float pointer coords **DONE**, screen-reader
+      no-op **DONE**, text context menu **RECONCILED — already works** via the legacy path
+      (§2). Date/time localization is P1 polish (formatter already works).
+- [x] Vendor hygiene stays clean: zero drift (all 10 manual vendors match pin), zero
+      commonMain rule-1 violations, zero vendored files touched this session — verified via
+      `check-vendor-drift.py`.
+- [~] SDL static lib slimmed to the used subsystem surface (§3) — **DONE + verified on
+      macOS/Metal**; other hosts pending WIN-SMOKE.
+- [ ] Refs re-pinned to Compose **1.12.0 stable**, JVM parity versions bumped, WIN-SMOKE
+      fidelity pass green on a real Windows host.
+- [x] `CLAUDE.md` documentation map consistent with tree — line-1 typo fixed; the stale
+      historical docs `RENDERER.md` + `SKIKO-MINGW-FEASIBILITY.md` removed (current renderer
+      essentials inlined into CLAUDE.md, the rest is in git history); all dead doc links
+      (TODO.md / RENDERER.md / SKIKO) removed or repointed to PLAN.md.
+
+## Landed toward 1.0.0 (this pass — all build + run verified on macOS/Metal)
+
+Everything below is committed; details + file refs are in the sections that follow.
+
+1. **Tab tofu fix** (§1a P0) — normalize `\t`→space before shaping so the Windows fork
+   can't render `.notdef`. Platform-independent, length-preserving.
+2. **HiDPI caret quantization fix** (§2 P0) — pointer/wheel coords carried as `Float`
+   end-to-end instead of truncated to `Int`.
+3. **Screen-reader no-op** (§2 P0) — `LocalPlatformScreenReader` defaults to inactive
+   instead of throwing.
+4. **SDL slimming** (§3) — 10 unused subsystems disabled in `build-all.py`; 6 now-dead
+   macOS frameworks dropped from `sdl3.def`. Rebuilt; demo + apidemo link, demo runs.
+5. **Context menu reconciled** (§2 P0) — confirmed already working via the vendored legacy
+   path; the 3 "NOP" seams are vestigial (disabled new API) — misleading TODOs corrected.
+6. **`CDN_TEXT_METRICS` diagnostic** (§1b) — env-gated line-metrics dump; macOS baseline
+   captured, hypothesis sharpened (fork likely drops lineHeight leading).
+7. **Doc hygiene** (§5) — removed the stale historical `RENDERER.md` +
+   `SKIKO-MINGW-FEASIBILITY.md` (renderer essentials folded into `CLAUDE.md`; rest in git
+   history), fixed the `CLAUDE.md` typo + all dead doc links; extracted the fork
+   FreeType-scaler lead into §1c before deleting. Vendor drift verified clean.
+
+**Windows pass (2026-08-04, this host — DPR 1).** On a real Windows host at last: (8) tab fix
+**CONFIRMED on-device** (§1a); (9) vertical metrics **RESOLVED** — native `--metricsprobe` heights
+== JVM `--metrics` exactly, feared "dropped leading" DISPROVEN (§1b); (10) fork `LineMetrics.
+ascent/descent` mis-decode **FIXED in shared Kotlin** (`SkiaParagraphOps.lineMetrics()`, guarded
+no-op on official skiko) — repairs Windows caret/selection; (11) fork FontMgr/ICU **AUDITED** — CJK
++ color-emoji + control-char fallback all work → the "empty FreeType stub" fear DISPROVEN (§1c);
+(12) `FontRasterizationSettings.native.kt` verified to mirror upstream VERBATIM + given a
+`VENDOR-BASE` provenance line; rasterization stays upstream-faithful per-OS (user decision). Net:
+the fork's Skia matches upstream — the only deltas are its thin extern-C bindings, fixed in shared
+Kotlin, **zero fork rebuild**.
+
+**Still not done — WIN-SMOKE interactive + release** (§5): interactive caret-height check (the one
+behavioral consequence of the LineMetrics fix), the `PrintWindow` probe, `compileCommonMainKotlin
+Metadata`, apiDump + publish FROM Windows, and the Compose 1.12.0-stable re-pin. **Deliberately
+deferred** (large/structural, rationale in-section): RTL, `PlatformFontLoader`, grapheme source-set
+move, date CLDR, brush/gradient text — plus the big **vendor-the-upstream-skiko-text-engine
+refactor (§6)**, sequenced after these fixes land.
+
+---
+
+## ▶ Continuing on Windows (mingwX64) — START HERE
+
+**Read this before doing anything.** This file is the single source of truth for the road to
+1.0.0. Everything in **"Landed toward 1.0.0"** above is **already implemented and committed on
+`main`** — do NOT redo it, just verify it on this host. Every open `[ ]` / `[~]` below is
+remaining work. The macOS/Linux side is done and verified; the remaining blockers need a **real
+Windows host** — the mingwX64 build cross-compiled from mac/Linux fails at cinterop, and the
+bitsycore skiko **fork** can only be rebuilt on Windows.
+
+**The Windows fidelity reference is skiko-on-JVM Compose Desktop on THIS Windows host**
+(`gradlew :demo:run` — also DirectWrite/system fonts), NOT macOS. mac↔Windows metric deltas are
+expected in upstream Compose Desktop too, so "matches Windows-JVM" is the acceptance bar, not
+"matches macOS".
+
+### Build / run (Windows shell, repo root)
+
+```bat
+gradlew.bat :demo:runDebugExecutableMingwX64      :: native demo (the port under test)
+gradlew.bat :apidemo:runDebugExecutableMingwX64   :: native apidemo (has the Session/Override buttons)
+gradlew :demo:run                                 :: JVM Compose Desktop = the FIDELITY REFERENCE
+gradlew :apidemo:run                              :: JVM apidemo reference
+```
+
+- The bridge plugin auto-drops `skiko-windows-x64.dll` next to the exe (`installWindowsSkiaDll`).
+  Fork coords `com.bitsycore.skiko:skiko:0.150.1-mingw.1` (override `-PskikoMingwVersion`).
+- `:demo` CLI flags (native AND jvm): `--screen=<Name>`, `--screenshot=<path.bmp>` (capture at
+  quiescence then quit), `--gpu=auto|software|skia.opengl`. `CDN_TEXT_METRICS=1` env var dumps
+  text metrics (§1b). `CDN_PROFILE=1` frame profiler. `:apidemo` has NO screenshot CLI — drive it
+  by hand for the button-metrics visual.
+- If an IC-cache error appears after any module churn: delete `demo\build\kotlin-native-ic-cache`.
+
+### ✅ Windows session results (2026-08-04, this host — DPR 1.0)
+
+Items 1–3 below are **DONE + verified on the shipped mingwX64 demo binary**; findings folded into
+§1a/§1b/§1c. Only 4–5 (WIN-SMOKE interactive gate + apiDump/publish) remain. TL;DR:
+
+- **§1a tab fix — CONFIRMED.** `--screen=BasicText` with `"start>a\tb<end\tcols\tand\tthere"`
+  rendered `start>a b<end cols and there` — every `\t` a SPACE, zero `.notdef`. (Structural proof
+  too: the whole module has exactly 2 `.addText(` sites, both `shapedText`.)
+- **§1b vertical metrics — RESOLVED, the feared bug is DISPROVEN.** Native `--metricsprobe` vs JVM
+  `--metrics` (same host, NotoSans, density 1): **every paragraph height + non-M3 baseline matches
+  JVM EXACTLY** (size 11→24). Leading is NOT dropped. Two residual deltas found (details in §1b):
+  (a) the fork's `LineMetrics.ascent/descent` are mis-decoded — **fixed in Kotlin** this session;
+  (b) M3 baseline drifts ≤0.77px (halfLeading, a shared-engine omission on ALL platforms, sub-pixel).
+- **§1c FontMgr/ICU — the "empty FreeType stub" fear is DISPROVEN.** Native render of CJK
+  (你好世界 日本語 한국어) + **full-COLOR emoji** (😀🎉🚀❤) + control chars (nbsp/zwsp/en-dash) = zero
+  tofu. Color emoji + CJK fallback prove `FontMgr.default` is a real DirectWrite-backed system
+  manager, not an empty custom FreeType one. Remaining §1c work is doc-only (capture `args.gn`).
+
+Reference commands actually used (both probes print `metrics:` lines; native runs a real window):
+```bat
+demo\build\bin\mingwX64\debugExecutable\demo.exe --metricsprobe    :: native/fork metrics
+gradlew :demo:run --args="--metrics"                               :: JVM/upstream metrics
+set CDN_TEXT_METRICS=1 && ...demo.exe --screen=Buttons             :: raw per-paragraph dump
+```
+(The JVM leg's screenshot flag is `--screenshot-all=<dir>`, not the native `--screenshot=<file>`.)
+
+### Ordered Windows work (do top-to-bottom; full detail in the numbered sections below)
+
+1. **[§1a] Confirm the tab fix — ✅ DONE** (see session results above). Rendered a literal-tab
+   string on the fork; all `\t`→space, no tofu. The `SkiaParagraphEngine.shapedText` normalization
+   holds; no bypass path exists (2 `.addText(` sites, both `shapedText`).
+
+2. **[§1b] Confirm/resolve vertical metrics — ✅ RESOLVED (feared bug DISPROVEN).** Used the
+   `--metricsprobe` (native) vs `--metrics` (JVM) pair, NOT the screenshot diff (the JVM leg has no
+   `--screenshot=<file>`; it dumps the same `metrics:` table). Every paragraph HEIGHT matches JVM
+   exactly (leading applied identically) → correct-by-reference. Only a ≤0.77px M3-baseline drift
+   remains (halfLeading, all platforms). Separately fixed the fork's broken `LineMetrics.ascent/
+   descent` in Kotlin. Full data in §1b.
+
+3. **[§1c] Audit the fork FontMgr / gamma / ICU — ✅ AUDITED (fallback WORKS).** CJK + color emoji +
+   control chars all render with zero tofu on the fork → `FontMgr.default` is a real system
+   (DirectWrite) manager with working glyph fallback, NOT an empty FreeType stub. Remaining: capture
+   the fork's REAL `args.gn` (`SK_GAMMA_*`, ICU packaging, freetype-vs-dwrite) into the fork repo so
+   drift is auditable (doc-only, not a code blocker).
+
+4. **[§5] WIN-SMOKE gate** (pre-ship): (1) the §1b metrics dump, (2) tab/control-char render clean,
+   (3) the Windows-only `PrintWindow` probe (`scripts/probe/`), (4) `gradlew
+   :<module>:compileCommonMainKotlinMetadata` (only the Windows job compiles common metadata).
+
+5. **[§5] apiDump + publish FROM Windows** (host-specific; only the Windows job carries the full
+   mingwX64 variant table). Then, when Compose **1.12.0 stable** ships, do the re-pin + version
+   bump. Release runbook: [TOOLING.md](TOOLING.md).
+
+---
+
+## 1. Cross-platform FIDELITY (headline)
+
+All Windows divergences live **below Kotlin** — the mingw source set reuses
+`src/skikoRendererMain/kotlin` byte-for-byte (`compose/ui/ui/build.gradle.kts:102-113`),
+the only mingw-unique file is `PlatformGpu.mingw.kt` (13 lines, GPU only). So every
+divergence is in the **fork's Skia binary**, in **`FontMgr.default`'s per-OS impl**, or in
+the **GPU backend**. The fork is external (`bitsycore/skiko`,
+`com.bitsycore.skiko:skiko:0.150.1-mingw.1`) and its GN args are **not verifiable from this
+tree** — recovering them is a prerequisite for several fixes below.
+
+**Fidelity reference for Windows is skiko-on-JVM Compose Desktop on Windows** (also
+DirectWrite), NOT macOS/Linux. macOS↔Windows metric deltas partly exist in upstream
+Compose Desktop too (per-platform font backends). Reframe V-items as "match JVM-Windows"
+acceptance tests, not "bugs vs macOS".
+
+### 1a. Windows tab-character tofu — HIGH CONFIDENCE (root cause traced)
+
+Kotlin sets `ParagraphStyle.replaceTabCharacters = true`
+(`compose/ui/ui-text/src/skikoRendererMain/kotlin/.../renderer/skia/SkiaParagraphEngine.kt:234-236`,
+exact mirror of upstream `ParagraphBuilder.skiko.kt:625`, CMP-6589). Works on
+macOS/Linux (official skiko honors the flag → `U+0009` replaced by space before shaping).
+On Windows the same call runs against the fork's flat extern-C DLL, which evidently does
+**not** wire the setter → raw `\t` reaches HarfBuzz → NotoSans has no tab glyph → `.notdef`
+box. Font fallback is a **red herring**: no font has a tab glyph, only tab→space
+replacement cures it.
+
+- [x] **P0** Confirm — ✅ DONE (Windows 2026-08-04): rendered a literal-tab string on the fork
+      (`--screen=BasicText`); every `\t` shows a SPACE, no `.notdef`. The fork renders everything
+      else clean too, so tab→space was the only gap. Structural backstop: the module has exactly 2
+      `.addText(` sites, both `shapedText` — no raw tab can reach skiko.
+- [x] **P0** Fix (ship now, author project code): in
+      `.../SkiaParagraphEngine.kt`, feed skiko a normalized copy — added
+      `private val shapedText = if (text.indexOf('\t') >= 0) text.replace('\t', ' ') else text`,
+      used at `addText` (no-span path) and via `shapedText.substring(segStart, segEnd)`
+      (span path); `text` kept for ALL length/index queries (`getRectsForRange`,
+      `getCursorRect`, `wordBoundary`, `lineMetrics`, span cut-points). Length-preserving so
+      every offset consumer stays correct; this is exactly what Skia's flag does internally →
+      upstream-faithful; makes behavior platform-independent (no fork rebuild needed).
+      Kept `replaceTabCharacters = true` (harmless/redundant elsewhere).
+      **DONE** — compiles clean on macosArm64. Windows tofu render still needs on-device
+      confirmation (WIN-SMOKE §5).
+- [ ] **P2** Long-term true fix (fork, out of tree): wire
+      `ParagraphStyle::setReplaceTabCharacters` through the fork's extern-C surface,
+      rebuild/republish `skiko-windows-x64.dll`, bump `-PskikoMingwVersion`. Do this *in
+      addition to* the Kotlin fix, not instead — it keeps the port thin. Can't be verified
+      in-tree.
+
+### 1b. macOS-vs-Windows vertical text metrics — ✅ RESOLVED (Windows 2026-08-04): heights match JVM, feared bug DISPROVEN
+
+**WINDOWS RESULT (2026-08-04).** All targets render through the SAME Skia, so metrics are expected
+to be similar — and they are. Native `--metricsprobe` (fork) vs JVM `--metrics` (upstream skiko) on
+this host (NotoSans, density 1) print IDENTICAL paragraph heights and non-M3 baselines for every
+size 11→24 (`cell`/`one`/`three`/`oneM3`/`threeM3`, `base1`/`base3` all match). The fork does NOT
+drop lineHeight leading — the hypothesis below is disproven. Two small deltas remained, both
+handled in SHARED Kotlin (no fork rebuild, keeping fork-reliance minimal):
+
+  1. **Fork `LineMetrics.ascent/descent` mis-decode → FIXED in Kotlin (this session).**
+     `CDN_TEXT_METRICS` showed the fork's per-line `ascent`/`descent` constant (18.837/5.163)
+     regardless of `fontPx`, while `baseline`/`height`/`width` are correct (mac scales them:
+     37.674@30px). This is the fork's flat extern-C LineMetrics binding, NOT a Skia difference.
+     Lines stack contiguously so true ascent = `baseline - lineTop`; `SkiaParagraphOps.lineMetrics()`
+     now rebuilds ascent/descent from the reliable baseline+height when they're internally
+     inconsistent (guard `|ascent-(baseline-lineTop)|>0.5` = no-op on official skiko). Repairs caret
+     height / getLineTop/Bottom / vertical hit-test on Windows. **Behavioral caret check → WIN-SMOKE.**
+  2. **M3 baseline drift ≤0.77px (halfLeading) — SHARED-engine omission, all platforms.** `base1M3`
+     differs native-vs-JVM by ≤0.77px in the 11→24 sweep (size 14 → 0.28px, sub-pixel), 2.19px in
+     the contrived `boundary 24/25` case. Root cause is NOT the fork: `SkiaParagraphEngine` maps
+     `LineHeightStyle.trim`→HeightMode but never wires `halfLeading`/`LineHeightStyle.Alignment`, so
+     macOS-native drifts from JVM by the same amount (parity tolerated it as sub-pixel). Fixable in
+     shared Kotlin (`textStyle.halfLeading` from the alignment); deferred pending a cross-platform
+     parity re-check (can't run mac parity from a Windows host).
+
+Native-fork metricsprobe vs JVM `--metrics` (this host) — identical except `base?M3`:
+```
+size=14 lh=20 cell=19 one=19 three=59 base1=14.898 base3=54.898 oneM3=20 threeM3=60 base1M3: 15.682 fork / 15.398 jvm
+size=24 lh=30 cell=33 one=33 three=93 base1=25.968 base3=85.968 oneM3=30 threeM3=90 base1M3: 23.546 fork / 24.312 jvm
+boundary 24/25 m3=25  base: 19.622 fork / 21.812 jvm
+```
+
+The vertical-layout code path is **identical** on all targets. The lineHeight/HeightMode
+path is a byte-faithful port of upstream and is NOT the cause: m3 `labelLarge` has
+lineHeight 20sp > fontSize 14sp with `LineHeightStyle.Default.trim == Both` →
+`HeightMode.DISABLE_ALL`, which collapses the single-line box to `fontAscent + fontDescent`
+of the font itself (`SkiaParagraphEngine.kt:244-249`, matches upstream
+`ParagraphBuilder.skiko.kt:631-646`). So box height is driven entirely by the font's
+reported ascent/descent.
+
+Root cause: **`FontMgr.default` resolves to a different Skia font scaler per build** for
+the *same* `font/NotoSans.ttf` bytes (`SkiaFonts.kt:38,44,50`) — CoreText on macOS,
+fontconfig/FreeType on Linux, DirectWrite (or FreeType, unverified) in the fork on Windows.
+Different backends select different metric tables (hhea `ascender/descender` vs OS/2
+`sTypoAscender/Descender` vs `usWinAscent/Descent`) and honor the OS/2 `USE_TYPO_METRICS`
+fs_selection bit differently. NotoSans is the textbook case (large top-heavy ascent).
+`SkiaParagraphEngine.kt:147-148` read `-defaultFont.metrics.ascent`/`.descent`;
+`:150-169 lineMetrics()` forwards skiko's numbers verbatim; `SkiaParagraph.native.kt:116,148-153`
+consume them. Contributors V2 (hinting Normal on Windows grid-fits vertically, CoreText
+ignores it) and V3 (subpixel/edging) are secondary and per-scaler.
+
+**Hypothesis, not confirmed:** whether Windows-native actually *diverges from
+Windows-JVM*. If it matches JVM-Windows it's correct-by-reference (not a bug), and the
+macOS↔Windows delta is expected upstream behavior.
+
+- [x] **P0** Confirm FIRST — ✅ RESOLVED (Windows 2026-08-04; heights == JVM, see WINDOWS RESULT
+      above). Diagnostic **LANDED**: `SkiaParagraphEngine.kt` dumps
+      `defaultFont.metrics.{ascent,descent,leading}`, `paragraph.height`,
+      `lineMetrics[0].{ascent,descent,baseline,height}`, `familyName` + `fontPx` per built
+      paragraph when `CDN_TEXT_METRICS=1` (mirrors the `CDN_PROFILE` env-flag convention).
+      Run `CDN_TEXT_METRICS=1 <app> --screen=Buttons` (native) and the JVM parity app on the
+      SAME host, diff the lines. macOS baseline captured (see below). **REMAINING (Windows
+      host):** compare Windows-native vs **skiko-JVM-Windows**. Expectation: `fontPx` +
+      lineHeight + heightMode identical, `metrics.ascent` differs by scaler.
+      **Acceptance test:** Windows-native == skiko-JVM-Windows (→ correct-by-reference, not a
+      bug); if they differ, it's a fork scaler fix (next item).
+
+      **macOS baseline captured (`--screen=Buttons`, DPR 2):** for the fontPx=30 button
+      labels ("Filled Button" / "OutlinedButton" / "TextButton"): font metrics
+      `ascent=-32.07 descent=8.79 leading=0` (font box = **40.86px**), but the line box is
+      `line0[ascent=37.67 descent=10.33 height=48.0]`, `paraHeight=48`. So macOS DOES apply
+      the lineHeight leading (48 > 40.86) and distributes it **asymmetrically — ~5.6px above,
+      ~1.5px below** → exactly the "extra space on top of the text" the report describes.
+      **SHARPENED HYPOTHESIS:** this is NOT a mac bug — it's correct lineHeight distribution.
+      The likely Windows story is the MIRROR of §1a: the fork's flat extern-C surface doesn't
+      wire the `ParagraphStyle` height/strut path, so Windows renders **tight to the font box
+      (~41px, no leading)** = the "fitted to text" look. **Sharpened WIN-SMOKE check:** for the
+      SAME label, compare `paraHeight` + `line0.height`. If macOS/JVM = 48 but Windows-native
+      ≈ 41, the fork drops lineHeight leading (fork fix: wire `heightMode`/strut, like
+      `replaceTabCharacters`); a Kotlin fallback is a manual `StrutStyle`. If Windows-native
+      == Windows-JVM, it's correct-by-reference.
+
+      **macOS baseline raw lines** (`CDN_TEXT_METRICS=1 demo --screen=Buttons`, DPR 2) — diff
+      Windows-native + Windows-JVM against these; the fontPx=30 rows are the cleanest signal:
+      ```
+      text='Filled Button'  fontPx=30.0  ascent=-32.070007 descent=8.789978 leading=0.0  paraHeight=48.0  line0[ascent=37.674 descent=10.326 baseline=37.674 height=48.0]
+      text='OutlinedButton' fontPx=30.0  ascent=-32.070007 descent=8.789978 leading=0.0  paraHeight=48.0  line0[ascent=37.674 descent=10.326 baseline=37.674 height=48.0]
+      text='TextButton'     fontPx=30.0  ascent=-32.070007 descent=8.789978 leading=0.0  paraHeight=48.0  line0[ascent=37.674 descent=10.326 baseline=37.674 height=48.0]
+      text='Outlined'       fontPx=28.0  ascent=-29.932007 descent=8.203980 leading=0.0  paraHeight=40.0  line0[ascent=31.395 descent=8.605  baseline=31.364 height=40.0]
+      ```
+      (family='Noto Sans' on all.) Expectation if correct: `fontPx`, `paraHeight`, `line0.height`
+      match JVM-Windows exactly; the raw `ascent`/`descent` may differ from these macOS numbers
+      because the Windows scaler is FreeType (§1c), but the LINE BOX must still match JVM-Windows.
+- [x] **P1** ~~If Windows-native != Windows-JVM: fix in the fork~~ — **N/A (2026-08-04):** heights
+      MATCH JVM-Windows exactly, so no fork scaler/FontMgr change is needed for vertical metrics.
+      The `makeFromData` typefaces already get the same metric-table selection as skiko-JVM-Windows.
+      The one residual (M3 halfLeading) is a shared-Kotlin fix, not a fork one.
+- [ ] **P2** (Optional, STRONGER than upstream) If cross-platform pixel-identity is
+      wanted over matching each host's stock Compose Desktop: build a single
+      FreeType/`SkFontMgr_Custom_Empty`-backed `SkFontMgr` used on ALL native targets for
+      the bundled fonts, so NotoSans yields identical ascent/descent everywhere.
+      Intentional departure from per-platform upstream behavior — decide deliberately.
+- [ ] **DO NOT** "fix" by injecting a default `LineHeightStyle` or clamping ascent in
+      `SkiaParagraphEngine.kt` — that desyncs from upstream `DISABLE_ALL` and masks, not
+      resolves, the metric divergence.
+
+### 1c. Other fork-vs-official divergences
+
+- [x] **P1** ~~`FontMgr.default` may be an empty/stub manager on the fork~~ — **DISPROVEN
+      (Windows 2026-08-04).** Native render of CJK (你好世界 日本語 한국어) + **full-COLOR emoji**
+      (😀🎉🚀❤) + control chars = zero tofu. Color emoji + CJK fallback are impossible with an empty
+      custom FreeType manager, so the fork's `FontMgr.default` IS a real DirectWrite-backed system
+      manager with working glyph enumeration/fallback. No fork change needed. `SkiaFonts.kt` wiring
+      stays as-is.
+- [x] **P1** `FontMgrWithFallback` — ANALYZED + fallback now VERIFIED on Windows. The port
+      does `setDefaultFontManager(fontMgr)` [system] + `setAssetFontManager(provider)`
+      [bundled] (`SkiaFonts.kt:49-52`). This is **functionally equivalent** for missing-glyph
+      fallback on macOS/Linux/Windows-JVM: skiko's shaper tries the asset provider (bundled
+      Noto + aliases) first, then the default/system manager for CJK/emoji fallback, which
+      resolves because the system FontMgr has those fonts. Rewriting to
+      `setDefaultFontManager(FontMgrWithFallback(provider))` risks a macOS fallback
+      regression with no observable gain, and I can't visually verify CJK/emoji fallback on
+      this host. **The real gap was thought to be Windows-fork-only** (fork `FontMgr.default`
+      empty stub → no system fallback) — but that's **DISPROVEN (2026-08-04):** CJK + color-emoji
+      fallback works on native Windows too (item above). So the setDefault/setAsset wiring is fine
+      on ALL targets. **Decision:** leave the Kotlin as-is; nothing to fix in the fork here. Re-open
+      only if a CJK/emoji fallback bug is actually observed.
+- [x] **P2** ~~ICU/unicode data packaged differently in the fork~~ — **VERIFIED OK (2026-08-04).**
+      Rendered U+00A0 (nbsp → visible space), U+200B (zwsp → zero-width/collapsed), en-dash, and
+      U+0009 (tab, pre-replacement) on native Windows: all classified/handled correctly, no tofu.
+      The force-exported `uloc_*_skiko` symbols do their job; skunicode classification works. (This
+      is also why HarfBuzz shaping + skparagraph bidi work at all — ICU data is present via
+      icudtl.dat.)
+- [~] **P2** Text gamma/AA edges: a Skia **build-time constant**
+      (`SK_GAMMA_EXPONENT`/`SK_GAMMA_CONTRAST`/`SK_GAMMA_APPLY_TO_A8`), NOT a GL-vs-Metal
+      runtime difference. **Note (2026-08-04):** native Windows text AA looked clean in the render
+      (no visible AA anomaly), so no fork gamma fix is pursued for 1.0. Still worth capturing the
+      fork's values in the fork repo (see the args.gn item below). **Kotlin-side rasterization
+      settled:** the `RASTER_EDGING/HINTING/SUBPIXEL` in `SkiaParagraphEngine` come from
+      `FontRasterizationSettings.PlatformDefault`, which was verified (2026-08-04) to reproduce
+      upstream Compose Desktop's per-OS defaults VERBATIM (Win/mac=Normal hinting, Linux=Slight).
+      **User decision:** keep the upstream-faithful per-OS behavior (match each platform's stock
+      CMP), NOT a forced uniform cross-platform look. So there is no SDL_TTF-era gamma hack left to
+      strip — Skia is configured exactly as upstream does it.
+- [x] **GL-vs-Metal AA/gamma/color-space — RULED OUT as a primary cause.** Both bridges
+      create the surface `colorSpace = null` (`SkiaGLBridge.kt:68-74`,
+      `SkiaMetalBridge.kt:133-139`) — identical un-color-managed legacy blending. Only
+      deltas are cosmetic-correct: `RGBA_8888`/`BOTTOM_LEFT` (GL) vs `BGRA_8888`/`TOP_LEFT`
+      (Metal) — channel order + Y-flip, matched to buffers. Windows uses OpenGL
+      (`PlatformGpu.kt:20`), same backend as Linux, so GL-vs-Metal can't explain a
+      Windows-vs-Linux gap at all. Deprioritized — no action.
+- [~] **P1** The fork's Skia build config (GN args). **Lead extracted from git history**
+      (the old `SKIKO-MINGW-FEASIBILITY.md`, deleted as stale — its build recipe lives in
+      `git show bdb5c64d^:SKIKO-MINGW-FEASIBILITY.md`): the fork's Route-1a recipe builds Skia
+      with **`skia_use_freetype`**, i.e. the Windows text scaler is **FreeType**, not
+      DirectWrite and not macOS CoreText — a concrete reason the SAME NotoSans bytes yield
+      different ascent/descent on Windows (different metric-table selection) AND why fork
+      `FontMgr.default` may not enumerate Windows system fonts for glyph fallback (FreeType
+      has no system fontmgr without fontconfig). **CAVEAT:** that's the *recommended recipe*,
+      not a verified dump of the shipped `0.150.1-mingw.1` GN args. **REMAINING:** whoever
+      rebuilds the fork should capture the real `args.gn` (`SK_GAMMA_*`, ICU packaging,
+      freetype-vs-dwrite) alongside the fork sources so drift is auditable — NOT as a doc in
+      this repo (kept lean); a comment in the fork repo or `build-sdl.properties`-style pin.
+
+---
+
+## 2. VENDORING & upstream-fidelity debt
+
+Vendor hygiene is **release-ready**: `check-vendor-drift.py` reports all 10 manual vendors
+match pin `v1.12.0-beta03+dev4483`; zero commonMain rule-1 violations (the 3 authored
+`androidx.compose.*` files in commonMain are all provenance-tracked Rule-3 vendors). The
+macosMain DIAGNOSTIC GAP families (`ui/ui` 12, `foundation` 23: `CoreTextField.macos.kt`,
+`SelectionManager.macos.kt`, `PlatformClipboard.macos.kt`, …) are **correctly excluded**
+(AppKit/NSView; the port uses SDL) — keep them in gaps. **Do not spend 1.0.0 effort
+re-vendoring.** The debt is **completing native-actual stubs**.
+
+### P0 — blocks fidelity/correctness
+
+- [~] **P0** Text context menu (right-click copy/paste/select-all) — **RECONCILED: already
+      works, no reimplementation.** Static trace confirmed the menu is wired end-to-end
+      through the vendored LEGACY path: text-level `ContextMenuArea` (`ContextMenu.native.kt`)
+      → `CommonContextMenuArea` (`vendor/common/.../text/CommonContextMenuArea.kt`) → (native
+      `ComposeFoundationFlags.isNewContextMenuEnabled = false`, so the legacy branch) →
+      `contextmenu.ContextMenuArea` → `contextMenuGestures`/`onRightClickDown`
+      (`isSecondaryPressed`) → `ContextMenuPopup` → `Popup.native.kt` (hosted by
+      `LocalPopupHost` at the app root). Items are real: `TextFieldSelectionManager` /
+      `SelectionManager.contextMenuBuilder` emit Cut/Copy/Paste/SelectAll with real actions.
+      SDL right-click → `PointerButton.Secondary` (`SDL3EventMapper.kt`) →
+      `isSecondaryPressed` (`PointerEventBridge`). The three "NOP" seams belong to the
+      DISABLED *new* context-menu API and are unreachable — **DONE:** their misleading
+      `TODO(CMP-7819)` comments corrected to say so, in all three files.
+      **REMAINING:** an interactive right-click smoke check (no headless driver here — fold
+      into manual/WIN-SMOKE). Known limitation, not a breakage: Paste enablement is
+      plain-text-only (`ClipboardPasteState.hasClip = hasText`, see P2 below).
+- [ ] **P1** DatePicker/TimePicker localization — VERIFIED current state:
+      `material3/.../internal/PlatformDateFormat.native.kt` is a real kotlinx-datetime
+      formatter that DOES honor CLDR patterns/skeletons (renders "Jul 29, 2026" /
+      "July 2026" correctly — the agent's "always yyyy-MM-dd" finding was stale). Genuine
+      remaining gaps, all narrower than a correctness blocker: field NAMES English-only
+      (`:29 weekdayNames`, `:147-154 MONTH_NAMES/ABBR` — no CLDR data bundled), `:27
+      firstDayOfWeek=1` fixed Sunday, `:67 is24HourFormat()=true` fixed, `:46 parse()`
+      ISO-8601-only. Upstream `darwinMain` uses `NSDateFormatter` (not portable). **Fix
+      (author):** bundle a CLDR subset or K/N i18n lib for localized names + locale-aware
+      first-day/24h; also unblocks `CalendarLocale.native.kt:20` (fixed `"en"`). Ships
+      readable English dates today — polish, not a P0 gate.
+- [x] **P0** Float pointer coordinates — `SDL3EventMapper.kt` `.toInt()`-truncated SDL's
+      Float `mb.x`/`mb.y`/`mm.x`/`mm.y` and the wheel `mouse_x/y` before the DPR multiply in
+      `ComposeWindow.kt`. On 2× displays a click at logical 100.9 → physical 200 not ~201,
+      quantizing the caret to 2px steps near glyph edges. **DONE:** widened
+      `LegacyPointerEvent.x/y` and `AppEvent.MouseWheel.x/y` to `Float`, dropped the
+      `.toInt()` at the three mapper construction sites, and removed the now-redundant
+      `.toFloat()` at the two `ComposeWindow` read sites. Consumers fully contained (verified
+      by grep). Builds + runs clean on macosArm64.
+
+### P1 — quality / parity
+
+- [ ] **P1** RTL text unsupported — `ui-text/.../SkiaParagraph.native.kt:112`
+      `textDirection = ResolvedTextDirection.Ltr` fixed field; `getParagraphDirection()`
+      (`:202`) always Ltr. Bidi run direction (`:204`) does read box direction (partial
+      machinery). Root cause: `text/intl/Locale.native.kt isRtl()` unimplemented. Fix
+      (author) tied to P1.2 engine.
+- [ ] **P1** `PlatformFontLoader` NOP — `ui-text/.../font/FontFamilyResolver.native.kt`
+      `SdlPlatformFontLoader.loadBlocking`/`awaitLoad` NOP;
+      `PlatformFontFamilyTypefaceAdapter.resolve` returns `Immutable(Unit)`. Raw androidx
+      `Font(bytes)`/`ResourceFont` don't load (compose-resources `Font()` works). Upstream
+      `SkiaFontLoader.skiko.kt` is the vendorable reference. This is the long-deferred P3.2
+      font resolver — **high-risk L**, parity harness wouldn't exercise it. Scope
+      deliberately for 1.0.0 (accept-and-document vs attempt). **NOW ALSO GATES §6** — the
+      2026-08-04 spike found the verbatim engine-vendor routes font resolution through this NOP, so
+      implementing this loader (so `SkiaFonts`' icon/variable-axis model rides upstream's seam) and
+      the §6 engine-vendor are ONE effort. Do them together, with macOS/Linux verification.
+- [ ] **P1** `CharHelpers.skiko.kt` grapheme-break logic — the ONE cheap selective-vendor
+      win from the hand-rolled text engine. Fixes `findPrecedingBreak`/`findFollowingBreak`
+      splitting emoji/combining marks in `StringHelpers.native.kt:31` +
+      `CharHelpers.native.kt:14`. (Giving `:foundation` a `skikoRenderer` source set would
+      unblock this + `DragAndDropSource.skiko` — L-effort structural move, per §13a.)
+- [~] **P1** `Serif`/`Cursive` generic families — RE-SCOPED after reading `SkiaFonts.kt`.
+      They do NOT silently collapse to sans: `baseTypeface()` routes `generic:serif` /
+      `generic:cursive` through `resolveGeneric()` → `fontMgr.matchFamilyStyle()` over a
+      per-OS candidate list (`genericFamilyAliases`: Times/Noto Serif/… on each host), only
+      falling back to the bundled default if NONE is installed. So serif/cursive already
+      render as a real serif/cursive wherever the OS ships one (all three target OSes do).
+      The only true gap is **cross-platform pixel-identity** / a host with no serif installed,
+      which needs a BUNDLED Noto Serif — an app-level opt-in (buildSrc `downloadNotoFonts` +
+      data.kres size cost), not a library correctness bug. **Decision:** leave library
+      resolution as-is; offer bundled-serif as an opt-in later if an app needs it.
+- [x] **P1** Document the hand-rolled text engine as an **accepted architectural
+      deviation** — **DONE:** rationale header added to the top of
+      `ui-text/compose-fork.txt` (the exact place someone would go to "fill" the gaps),
+      explaining the reduced local engine, the flat-source-set reason, and that RTL /
+      stroke-DrawStyle / grapheme reductions are tracked here (§2), not fixed by vendoring.
+      Also reflected in `SkiaParagraphEngine.kt`'s header and CLAUDE.md's renderer summary.
+
+### P1/P2 — reduced-coverage + accessibility
+
+- [ ] **P1** Text paint path handles only `SolidColor`
+      (`SkiaParagraph.native.kt:253-256`) — no brush/gradient text fill, `drawStyle`
+      (stroke), or non-`SrcOver` blendMode. Part of the reduced style coverage; extend on
+      the local engine.
+- [ ] **P1** `SkiaParagraphEngine.kt:150-164` span segmentation drops partial `SpanStyle`
+      overlaps (keeps only fully-covering `start<=segStart && end>=segEnd`). Documented
+      divergence (`b63-upstream-text-mingw.md`) — widen to true interval segmentation.
+- [~] **P1** Accessibility absent — `ComposeOwner.kt:~340` builds a `semanticsOwner` never
+      traversed to any OS a11y API; `SemanticsRegion.native.kt intersect()/difference()`
+      hardcode `false`. Not vendorable (NSAccessibility/UIA/AT-SPI). **Decision for 1.0.0:
+      out of scope for desktop.** The full a11y pipeline stays P2/out.
+      - [x] **P0** No-op `PlatformScreenReader` — `CompositionLocals.native.kt`
+        `LocalPlatformScreenReader` default no longer throws (`error(...)`); it returns an
+        `InactivePlatformScreenReader` (`isActive = false`) so a11y-gated vendored code
+        degrades to "no reader present" instead of crashing. **DONE** — builds + runs clean.
+- [ ] **P2** `SkiaFonts.kt` fidelity: `resolveCache` unbounded (font-cache half of P3.4
+      deferred); variation key passes `null` density (`:65,78`) so density-dependent `opsz`
+      in sp resolves wrong. `NamedFont.equals/hashCode` axis identity reportedly fixed —
+      re-verify.
+
+### P2 — cosmetic / edge
+
+- [ ] **P2** `BlendMode.Multiply` renders wrong — opaque cyan×yellow reads back blue;
+      likely Metal premultiply in graphics-layer flatten, not the `toSkia()` map. Isolate on
+      the Skia draw path.
+- [ ] **P2** Drag-OUT of window NOP — `ui/.../draganddrop/Sdl3DragAndDropOwner.kt:39`
+      `requestDragAndDropTransfer`; `DragAndDropSource.native.kt:36` no drag-shadow. SDL3
+      has no portable start-drag → needs NSDraggingSession/DoDragDrop/XDND per-OS.
+      Drop-INTO works. Accepted 1.0 gap (SDL platform limit) — document.
+- [ ] **P2** `NativeStringDelegate.native.kt:17` `toUpper/toLowerCase` ignore `locale`
+      (Turkish i). Upstream `darwin` unvendorable (NSString).
+- [ ] **P2** Prefetch scheduler NOP — `platform/PrefetchLocals.native.kt:18`, lazy lists
+      skip ahead-of-time composition (scroll-in jank).
+- [ ] **P2** `ClipboardPasteState.hasClip` aliased to `hasText`
+      (`TextFieldSelectionState.native.kt:43`) — image-only clipboard undetected.
+- [ ] **P2** `ComposeOwner.kt` gaps: `autofill`/`autofillManager` null (`:324`),
+      `hapticFeedBack` NOP (`:279`), deprecated `clipboardManager` NOP (`:287`, real
+      `LocalClipboard` works), `textToolbar` stub (`:311`, touch-gated). No multi-monitor
+      enumeration (`SDL_GetDisplays` unused). Most match upstream desktop — verify, then
+      leave or fill.
+- [x] **P2** `installGlobals()` → `registerGenericFonts()`: VERIFIED not a hot-path cost —
+      `registerGenericFonts()` already early-returns on a `fRegistered` flag
+      (`GenericFonts.kt:20-26`), so the per-event call is a single boolean check, not a
+      re-register. Original premise inaccurate; no change needed. (Minor residue: the
+      `ImeBridge.onSessionActiveChange` lambda is reassigned per event — negligible, left
+      as-is since it repoints per active window.)
+
+---
+
+## 3. SDL slimming
+
+Static lib built from source per host (`scripts/build-sdl/build-all.py`, ref
+`release-3.4.12`); linked into the exe via `sdl3.def` (`staticLibraries=libSDL3.a`). Today
+only tests/examples + Windows D3D12/GPU are off (`build-all.py:311-319`). `SDL_Init` uses
+**`SDL_INIT_VIDEO` only** (`SDL3Backend.kt:49`).
+
+**USED (keep ON):** Video/window, Events, Clipboard, Dialog (file open/save — no cheaper
+substitute; Linux uses portal/zenity, keep deps), OpenGL + Metal contexts, Render (2D CPU-
+raster blit path: `SkiaSurfaceBridge` uploads to `SDL_Texture` + `SDL_RenderPresent`),
+Filesystem, Cursor, Locale, System theme, Text input/IME, OpenURL, timing/hints.
+
+**UNUSED (disable — zero references, no transitive need):** Audio, Joystick (→disables
+Gamepad), Haptic, HIDAPI, Sensor, Power, Camera, GPU API, Offscreen video driver, virtual
+joystick.
+
+- [x] **P1** Added to `build-all.py` shared `vExtra`: `-DSDL_AUDIO=OFF`,
+      `-DSDL_JOYSTICK=OFF`, `-DSDL_HAPTIC=OFF`, `-DSDL_HIDAPI=OFF`, `-DSDL_SENSOR=OFF`,
+      `-DSDL_POWER=OFF`, `-DSDL_CAMERA=OFF`, `-DSDL_GPU=OFF`, `-DSDL_OFFSCREEN=OFF`,
+      `-DSDL_VIRTUAL_JOYSTICK=OFF`. Promoted `-DSDL_GPU=OFF` from the Windows-only branch to
+      the shared list; kept the per-host `-DSDL_RENDER_D3D12=OFF` (Windows). (Skipped
+      `-DSDL_DISABLE_INSTALL_DOCS` — not a real SDL3 option; the build's `cmake --install`
+      is relied upon.) All ten confirmed zero-reference by grep before disabling.
+- [~] **P1** After the flag change, rebuild + run apps to confirm no regression.
+      **DONE on macOS/Metal:** `build-all.py` rebuilt libSDL3.a clean with the new flags;
+      `:demo` links + runs to a settled screenshot (TextField screen, no visual regression);
+      `:apidemo` links clean too. **PENDING:** both apps on Linux + Windows hosts (fold into
+      WIN-SMOKE §5). If audio/gamepad is ever needed by a consumer app, re-enable the flag
+      and rebuild the static lib (build-time only).
+- [x] **P2** Prune now-unreferenced macOS frameworks from `sdl3.def`. **DONE:** verified
+      against the regenerated `libs/SDL3/lib/pkgconfig/sdl3.pc` `Libs:` line (source of
+      truth), which after slimming no longer references `CoreAudio`, `AudioToolbox`,
+      `AVFoundation`, `GameController`, `ForceFeedback`, or weak `CoreHaptics` — removed all
+      six from `linkerOpts.osx` (kept `CoreMedia`, which the `.pc` still lists). Demo relinks
+      clean. (Left Linux `linkerOpts` alone — those `-l` entries serve Skia/GL/X11, not the
+      disabled SDL subsystems.)
+- [ ] **P2** (higher-risk, flag-don't-apply) Render-driver pruning to software-only. Only
+      the CPU-raster fallback uses `SDL_Render`; GL/Metal go direct. But
+      `SDL_CreateRenderer(window, null)` (`SDL3Backend.kt:117`) lets SDL pick the first
+      driver — with only software present it picks software (fine) but couples the fallback
+      to that assumption. **Conservative: leave render drivers alone.**
+
+**Do NOT** add `-DSDL_DISABLE_INSTALL` — the build relies on `cmake --install`
+(`build-all.py:342`) to stage `libSDL3.a` + headers. `SDL_DYNAMIC_API` auto-disables for
+static builds (no flag needed). **Risk:** a future consumer app needing SDL audio/gamepad
+requires a static-lib rebuild (build-time, not a code change).
+
+---
+
+## 4. Performance
+
+Prior PLAN Phases 0–3 landed; §12 measurement showed **no steady-state perf gap on
+macOS/Metal**. Remaining perf question (if any) is Windows-GL or heavy-interaction
+specific. Retained-layer engine is byte-for-byte upstream — not the gap.
+
+- [ ] **P2** WON'T-FIX confirmed, keep as-is (don't relitigate): P0.4 per-frame full-surface
+      clear + P0.6 per-frame Metal drawable reacquire (`CAMetalDrawable` single-use per
+      frame, matches upstream `MetalRedrawer`).
+- [ ] **P2** P2.2 upstream `GlobalSnapshotManager` invalidation-driven scheduling —
+      deferred; coalescing half done by P1.3; full manager is skiko-windowing-coupled
+      (an explicit renderer non-goal — skiko-windowing-coupled). Leave deferred unless a
+      Windows-GL perf gap surfaces.
+- [ ] **P2** `SkiaImageCache` font-cache half of P3.4 — evicted typefaces stay referenced by
+      live paragraphs + `TypefaceFontProvider` (no clean unregister) so eviction frees no
+      memory. Native-resource lifecycle backstop is the periodic `GC.collect()` nudge (top-
+      level `Paragraph` a live `Text` holds has no Compose dispose seam). Accept for 1.0 or
+      add a provider-unregister path.
+- [ ] **P2** P4.1 second-renderer manual-vendor reversal (restore upstream RenderNode
+      shadows via `SkiaGraphicsContext.setLightingInfo` + relocate
+      `prepareTransformationMatrix`; deltas D2–D6). Buys vendoring cleanliness at
+      shadow-lighting/hit-test regression risk (current `NativeShadowCanvas` shadows render,
+      draw=0.08ms). Low ROI — deferred, needs full verify-mac + parity.
+- [ ] **P2** Profile the shipped **Windows-GL** binary (`CDN_PROFILE=1`) under heavy
+      interaction before ship (present phase is vsync-capped by display refresh — profile on
+      the target monitor). Only open perf unknown.
+
+---
+
+## 5. API coverage / release mechanics
+
+API coverage vs upstream is **99%** (8665/8751 decls via `compose-coverage.py`). Misses are
+AppKit/UIKit/web host actuals (N/A), `ImageComposeScene`/`renderComposeScene` (test util),
+and the `ui-text.platform` font layer (= P3.2 font resolver). The 1076 "extra" decls are
+umbrella-repo modules the tool can't compare + version skew, not invented surface.
+
+- [ ] **P0** Re-pin refs to Compose **1.12.0 stable** when it ships (currently
+      `v1.12.0-beta03+dev4483` — no clean beta03 tag on Maven). Bump both
+      `scripts/compose-fork/compose.properties` refs, re-sync (`scripts/compose-fork/sync.sh`),
+      let the build surface breakage.
+- [ ] **P0** Bump `vComposeJvmVersion` in `:demo` / `:apidemo` / `:material-symbols` (JVM
+      parity leg currently forced to beta02 by documented skew — native leads).
+- [ ] **P1** Run `check-vendor-drift.py` after the ref bump — re-stamp `VENDOR-BASE` on the
+      10 manual vendors, hand-reconcile any that actually changed base..pin.
+- [~] **P0** WIN-SMOKE fidelity pass (Windows host only, pre-ship gate): the Mac runbook
+      cannot cover the shipped mingwX64 binary. Assert: (1) NotoSans `FontMetrics` dump
+      native-vs-JVM-Windows (§1b acceptance) — **✅ DONE 2026-08-04 (`--metricsprobe`==`--metrics`)**;
+      (2) `\t`/control-char render clean (§1a) — **✅ DONE**; (3) the Windows-only `PrintWindow`
+      probe — pending (interactive); (4) the common-metadata publish job — compile gate now
+      **✅ GREEN (2026-08-04, see the fix below)**; the actual publish + downstream-consume smoke
+      still owed. Remaining: (3) `PrintWindow` probe + the interactive caret-height check for the
+      §1b LineMetrics fix.
+- [ ] **P0** apiDump is **host-specific** — do NOT commit macOS dumps. Only the **Windows
+      publish job compiles common metadata** (owns the root KotlinMultiplatform publications
+      — the only host declaring every target, so only its `.module` files carry the full
+      variant table; macOS-published roots left v0.1.15 without mingwX64 variants). Test
+      `gradlew :<module>:compileCommonMainKotlinMetadata` before tagging; publish from
+      Windows.
+- [x] **P0** **FIXED (2026-08-04) — common-metadata compile is now GREEN** (`compileCommonMainKotlin
+      Metadata` across all modules → BUILD SUCCESSFUL). Was RED, blocking the Windows publish.
+      Running `:material3:compileCommonMainKotlinMetadata` (or the aggregate) had failed at
+      `:foundation:compileNativeMainKotlinMetadata` (pulled in via `:foundation:allMetadataJar`):
+      `Scrollbar.skiko.kt` + `v2/Scrollbar.skiko.kt` — `Declaration annotated with
+      '@OptionalExpectation' can only be used in common module sources`
+      (`OPTIONAL_DECLARATION_USAGE_IN_NON_COMMON_SOURCE`). **Root cause:** upstream keeps these
+      `.skiko.kt` files in `skikoMain`, which INCLUDES the JVM-desktop target, so `@JvmName`/
+      `@JvmStatic`/`@file:JvmName` resolve; the port vendors them into **native-only `nativeMain`**
+      (no JVM target under it), so those JVM annotations are orphaned and the *metadata* compile
+      rejects them (per-target compile tolerates them — that's why the APPS build fine, but the
+      publish's `allMetadataJar` recompiles nativeMain metadata and dies). `:ui` and below pass;
+      `:foundation` is the first break. **Blast radius:** 14 vendored native files use `@Jvm*`
+      (`grep -rE "@file:JvmName|@JvmName|@JvmStatic" .../src/vendor/native .../src/nativeMain`); 11
+      are in the GITIGNORED, sync-regenerated `src/vendor/native/` tree, so per-file edits DON'T
+      survive a re-sync. **Fix (build/sync-level, not per-file):** either (a) a `sync.sh`
+      post-step that injects `@file:Suppress("OPTIONAL_DECLARATION_USAGE_IN_NON_COMMON_SOURCE")`
+      (or strips `@Jvm*`, which are no-ops with no JVM library target) into vendored native files —
+      there's precedent: `components-resources/…/ResourceState.blocking.kt` already carries that
+      suppress; or (b) a KGP-level relaxation of the native metadata compilation. Needs a real
+      publish + downstream-consume verification after. Dedicated effort — likely THE reason the
+      Windows metadata publish never went green.
+      **FIX APPLIED (2026-08-04):** the root turned out narrower — sync.py ALREADY injects the K2
+      `@file:Suppress("OPTIONAL_DECLARATION_USAGE_IN_NON_COMMON_SOURCE", "LESS_VISIBLE_TYPE_ACCESS_IN_INLINE")`
+      into every `src/vendor/` .kt (`sync.py:313`), so the regenerated tree was fine. The only gap
+      was the two COMMITTED manual vendors in `src/nativeMain` that sync doesn't regenerate:
+      `foundation/…/Scrollbar.skiko.kt` + `v2/Scrollbar.skiko.kt`. Added the identical `@file:Suppress`
+      to both (provenance comment updated; `check-vendor-drift` still clean). Full
+      `compileCommonMainKotlinMetadata` now green. **Remaining before publish:** run the actual
+      publish + a downstream-consume smoke (the compile gate is necessary, not proof the `.module`
+      variant table is complete).
+- [ ] **P1** Version bump to `1.0.0` across published coords once the above are green.
+- [x] **P0** Doc-hygiene blocker: `CLAUDE.md` documentation map referenced `RENDERER.md`,
+      `SKIKO-MINGW-FEASIBILITY.md`, and `TODO.md`. **DONE:** removed `RENDERER.md` +
+      `SKIKO-MINGW-FEASIBILITY.md` (stale/historical — current renderer essentials inlined in
+      CLAUDE.md's doc map, the rest recoverable from git history); fixed the `CLAUDE.md`
+      line-1 `ean` typo; dropped the `TODO.md` link (never committed) → its content is PLAN.md
+      §2. `git grep` confirms no remaining links to any deleted doc.
+
+---
+
+## 6. Vendor the upstream skiko text engine (next major refactor — approved 2026-08-04)
+
+**Goal:** honour "VENDOR ALL WE CAN". Delete the hand-rolled reduced text engine
+(`SkiaParagraph.native.kt` + `NativeParagraphOps` seam + `SkiaParagraphEngine.kt` +
+`FontRasterizationSettings.native.kt` port) and vendor upstream's skiko text subsystem VERBATIM.
+
+**Why it was hand-rolled (the REAL reason, not SDL_TTF):** `Paragraph` is `expect sealed interface`
+(`vendor/common/…/Paragraph.kt:56`) whose `actual` sits in the **skiko-FREE `nativeMain`**, so a
+sealed implementer can't touch skiko → the hand seam. `nativeMain` is skiko-free because it's the
+shared parent of the **official-skiko** (mac/linux, `libs.skiko`) and **fork-skiko** (mingw,
+`com.bitsycore.skiko:skiko`) legs — two different artifacts, so the shared parent can carry neither.
+
+**Why it's feasible NOW (all-skiko + srcDir reuse):** every native leg already reaches
+`src/skikoRendererMain/kotlin` (mingw via `kotlin.srcDir(...)` in `skikoRendererMingwSharedMain`,
+`ui-text/build.gradle.kts:54`), and the fork exposes the SAME `org.jetbrains.skia.*` Kotlin API. So
+the `Paragraph` **actual + engine can move DOWN into the skiko source set** (served to all targets)
+instead of skiko-free `nativeMain` — which lets upstream's skiko files compile as-is.
+
+**⚠️ SPIKE FINDING (2026-08-04) — the real gate is the FONT LOADER, not the source-set move.**
+A read-only feasibility map (no code changed) found two layers:
+- **Layer 1 — source-set / sealed move: FEASIBLE.** The `actual sealed interface Paragraph`
+  (`vendor/native/Paragraph.native.kt:36`, signature-only mirror) + its implementer + the 11 factory
+  actuals can move to `skikoRendererMain` (all leaves reach it; sealed same-source-set holds). Just
+  mechanical.
+- **Layer 2 — font model: THIS is the blocker, and it's the SAME task as §2-P1 `PlatformFontLoader`.**
+  Upstream's engine (`SkiaParagraphIntrinsics.skiko.kt:38,61`) resolves typefaces through
+  `FontFamily.Resolver` → `PlatformFontLoader`. The port's `SdlPlatformFontLoader`
+  (`font/FontFamilyResolver.native.kt:30-49`) is a **NOP** (`loadBlocking`/`awaitLoad`→`Unit`,
+  `resolve`→`Immutable(Unit)`). The port's hand-rolled engine exists precisely to BYPASS that NOP by
+  resolving through `SkiaFonts` (icon fonts + variable axes + data.kres bytes). So vendoring the
+  upstream engine verbatim routes font resolution through the NOP → **all text goes blank/tofu**
+  until the loader is real.
+- **Consequence:** the verbatim engine-vendor REQUIRES first implementing upstream's font-loader path
+  (vendor `SkiaFontLoader.skiko.kt` as the reference) so the port's `SkiaFonts` icon/variable-axis
+  model rides upstream's `PlatformFontLoader`/`FontLoadResult` seam. This is the deferred high-risk P1
+  in §2 — it and this §6 are one effort. **Intermediate option:** vendor the engine files but keep
+  `SkiaFonts` via a Rule-3 edit at the one resolve call site (vendors most files verbatim, 1–2 stay
+  hand-reconciled). **Verification needs macOS + Linux hosts** (parity), so this is a dedicated
+  effort, not a Windows-only session — do it with mac access, on its own branch.
+
+**Plan (spike on a branch, verify on THIS Windows host — build + render mingwX64):**
+1. Move the `Paragraph`/`ParagraphIntrinsics` **actuals** into `skikoRendererMain` (reused by mingw
+   via the existing `srcDir`). Confirm the `expect sealed` actual is accepted there for every leaf
+   target (the b63 memo hit a sealed-in-`nativeMain` wall — test whether hosting the actual in the
+   skiko set clears it; the sealed same-module rule is per-target-compilation, which should hold).
+2. Vendor VERBATIM into `src/vendor/skikoRenderer/`: `SkiaParagraph.skiko.kt`,
+   `ParagraphBuilder.skiko.kt`, `SkiaParagraphIntrinsics.skiko.kt`, `SkiaTextPaint.skiko.kt`,
+   `ParagraphLayouter.skiko.kt`, `PlatformFont.skiko.kt`, `FontRasterizationSettings.skiko.kt`,
+   `TextStyle.skiko.kt`; add them to `ui-text/compose-fork.txt`; delete the hand-rolled files.
+3. Reconcile the ~7 hierarchy-crossing `expect/actual` pairs the inverted layout needed; keep the
+   `SkiaFonts` family/variable-axis model (it's the port's real value-add) behind upstream's seams.
+4. **Fork-only Rule-3 edit:** upstream's code calls `paragraph.lineMetrics` — the fork's extern-C
+   binding mis-decodes ascent/descent (§1b finding). Either carry the guarded reconstruction (from
+   `SkiaParagraphOps.lineMetrics()`) into the vendored `SkiaParagraph.skiko.kt` as a Rule-3 edit, or
+   fix it in the fork DLL. **Bonus:** vendoring `ParagraphBuilder.skiko.kt` verbatim wires
+   `halfLeading` → the §1b M3-baseline drift disappears for free.
+5. Verify: mingwX64 build + `--screen=BasicText/Buttons/AnnotatedString` render clean +
+   `--metricsprobe` == JVM `--metrics`. Then macOS/Linux verify + parity (needs those hosts).
+
+**Sequencing:** AFTER the current shared-Kotlin fixes land (this session). If the sealed-actual move
+proves infeasible, fall back to keeping the seam but at least converting the hand files to tracked
+Rule-3 vendors (like `FontRasterizationSettings.native.kt` now has a `VENDOR-BASE` line).
+
+## Accepted 1.0.0 gaps (documented, not fixed)
+
+Drag-OUT of window (SDL platform limit; drop-IN works), full accessibility pipeline (out of
+scope for desktop 1.0 — but ship the non-throwing `PlatformScreenReader` no-op), the
+hand-rolled text engine as an architectural deviation (§2 P1), per-focus
+`SDL_StartTextInput/StopTextInput`, `loadImageBitmap`/`loadSvgPainter` (JVM `InputStream`
+signatures, N/A on K/N).

README.md

@@ -72,7 +72,7 @@ saved state behave as they do on Android.
 
 ```kotlin
 commonMain.dependencies {
-    implementation(project(":window"))           // window shell + main loop
+    implementation(project(":desktop-native-window")) // window shell + main loop
     implementation(project(":material3"))        // Material 3 widgets
     implementation(project(":material-symbols")) // icon-font composables (optional)
 }
@@ -80,7 +80,10 @@ commonMain.dependencies {
 
 ### Building from your own project: the bridge plugin
 
-The klibs publish to GitHub Packages under `com.bitsycore.compose.sdl:*`. Apply
+The klibs publish to [maven.bitsycore.com](https://maven.bitsycore.com/releases)
+(no auth) and GitHub Packages (authenticated fallback) under per-area coordinates that mirror
+upstream — `com.bitsycore.compose.ui:ui`, `com.bitsycore.compose.foundation:foundation`,
+… (the `com.bitsycore` fork of each `org.jetbrains.compose.*`). Apply
 the bridge Gradle plugin once, declare the **official** Compose Multiplatform
 coordinates, and the plugin swaps in the port's klibs on native desktop targets
 while android, jvm, iOS, and wasm keep resolving the official artifacts.
@@ -103,7 +106,15 @@ commonMain.dependencies {
 }
 ```
 
-Repositories, credentials, and version pinning:
+**Two GitHub Packages repos are needed.** A consumer declares the port's repo
+(`bitsycore/compose-desktop-native`) **and** the skiko fork's (`bitsycore/skiko`).
+The Windows (mingwX64) target renders through the bitsycore skiko fork, and
+GitHub Packages binds each package name to a **single** repository — so
+`com.bitsycore.skiko` can't be mirrored into the port's repo, it stays in its
+own. Scope them with `includeGroup`/`excludeGroup("com.bitsycore.skiko")`
+(macOS/Linux pull the official skiko from Maven Central instead; if you build no
+mingwX64 you can omit the fork repo). The exact `repositories {}` snippet,
+credentials, and version pinning:
 [gradle-plugin/compose-desktop-native-bridge/README.md](gradle-plugin/compose-desktop-native-bridge/README.md).
 
 For a complete project that applies the bridge and builds one shared UI for
@@ -142,8 +153,8 @@ client certificates.
 ## Modules
 
 One Gradle module per upstream Compose artifact, mirroring the upstream
-`compose/` tree. The renderer and cinterops live in `:ui`; `:window` is the SDL
-integration layer. `:material-symbols`, `:components-resources`, and
+`compose/` tree. The renderer lives in `:ui` and the `sdl3` cinterop in
+`:sdl-core`; `:desktop-native-window` is the SDL integration layer. `:material-symbols`, `:components-resources`, and
 `:navigation3-ui` are project or vendored modules that the official Maven
 artifacts do not cover for Kotlin/Native desktop.
 

RENDERER.md

@@ -1,219 +0,0 @@
-# RENDERER.md
-
-The durable reference for the rendering layer: how it is structured, the
-convergence work that shaped it, the decisions worth remembering, and what is
-left. Read this before touching anything under `renderer/`, the graphics
-actuals, or the layer engine.
-
-For build and verification commands see [TOOLING.md](TOOLING.md). For module
-layout, source-set hierarchy, and vendoring rules see [CLAUDE.md](CLAUDE.md).
-
-## 1. The renderer
-
-> **This branch is Skia-only.** The from-scratch SDL renderer leg
-> (`sdlRendererMain`: `Sdl3Canvas` / `Sdl3TextRenderer` / `FreeTypeIcons` / the
-> SDL render nodes, ~3,800 lines) and its `SDL3_ttf` / `SDL3_image` / FreeType
-> cinterops were removed once Skiko-on-mingwX64 landed (Route 1a — see
-> [SKIKO-MINGW-FEASIBILITY.md](SKIKO-MINGW-FEASIBILITY.md)). SDL3 remains as the
-> windowing / input / platform layer only. Below, references to "the SDL leg", a
-> second `RenderBackend` actual, `-Prenderer=sdl3`, and the SDL-leg fidelity work
-> are **historical** — kept because the convergence decisions still explain the
-> Skia leg's shape.
-
-Rendering goes through one `RenderBackend`, implemented once: the **Skia leg**
-(`skikoRendererMain`). It draws through upstream Compose Multiplatform's own Skia
-stack, vendored verbatim: `SkiaBackedCanvas`, `SkiaBackedPaint`, `SkiaShader`,
-`actual class GraphicsLayer` backed by `org.jetbrains.skiko.node.RenderNode`,
-`SkiaGraphicsContext` — the layer and draw engine internals are literally
-upstream. macOS/Linux link the official Skiko klibs; mingwX64 links the
-bitsycore skiko **fork** (`skikoRendererMingwMain`, Route 1a).
-
-The text and image pipeline (`SdlParagraph`, `NativeTextMeasurer`, `IconFont`)
-is the port's own engine; glyph rasterization is Skia. GPU path per platform:
-Metal (macOS), OpenGL (Linux + Windows), with a CPU-raster `Software` fallback.
-
-The seam is kept as narrow and low as possible. Code flows
-`Common (upstream) -> shared native engine -> Skia actual / SDL actual`. What we
-minimize is hand-rolled actual surface, not actual-side line count: a fat
-vendored-upstream actual (the Skia leg carrying upstream's whole GraphicsLayer
-stack) is preferred over a thin hand-written one.
-
-## 2. The retained-layer engine (the model we copied)
-
-Upstream skiko skips work at three levels. The Skia leg has all three.
-
-- **L1 frame scheduling.** A frame schedules the next only if still dirty.
-  Ours: `ComposeWindow.shouldRender()` gates `renderFrame()`; the loop blocks on
-  `SDL_WaitEventTimeout` when idle.
-- **L2 measure/layout only dirty nodes.** Vendored `MeasureAndLayoutDelegate`
-  used verbatim through `ComposeOwner.measureAndLayout()`.
-- **L3 draw record-once / replay** (the expensive one). Each isolated
-  `LayoutNode` gets an `OwnedLayer` (`GraphicsLayerOwnerLayer`) owning a
-  `GraphicsLayer`. The display list re-records only when content is dirty;
-  otherwise it replays.
-
-The critical property: **transform, alpha, and clip changes do NOT re-record.**
-Moving, scaling, rotating, or fading a layer replays cached content under a new
-transform. Only a genuine content change (a state read inside the draw block, or
-a resize) re-records. Upstream replays the whole scene every frame with no
-dirty-region present; the entire win is not re-recording clean layers, not
-drawing less screen. Dirty-region rendering is therefore an explicit non-goal.
-
-The compositing-strategy contract (`requiresLayer()`, from
-`SkiaGraphicsLayer.skiko.kt`) decides when a layer needs an offscreen:
-
-| Condition | Auto | Offscreen | ModulateAlpha |
-|---|---|---|---|
-| `alpha < 1` | offscreen | offscreen | per-op alpha multiply (no offscreen) |
-| `colorFilter != null` | offscreen | offscreen | offscreen |
-| `blendMode != SrcOver` | offscreen | offscreen | offscreen |
-| `renderEffect != null` | offscreen | offscreen | offscreen |
-| none of the above | replay in place | always offscreen | replay in place |
-
-## 3. Current state
-
-- **Skia leg runs upstream's engine.** Canvas (`SkiaBackedCanvas`) and
-  GraphicsLayer/GraphicsContext (`org.jetbrains.skiko.node.RenderNode`) are
-  vendored verbatim. The Skia leg gets real display-list caching and correct
-  clip/shadow/renderEffect for free from upstream. After this landed, Skia
-  `draw` on LazyColumn fell from 1.75 ms to 0.2 ms.
-- **Parity is a golden-master against JVM** (about 2% median, dominated by the
-  shared text engine's small metric delta). See TOOLING.md for how to read it.
-- **Memory is stable.** The historical composition leak is fixed (see section 6)
-  and guarded by the `--soaktest` gate in the verify runbook.
-
-## 4. Decisions to remember
-
-- **Goal is G1, cheap upstream-tracking.** The target is low per-bump
-  reconciliation cost when following upstream. All platforms now render through
-  real Skia — mingwX64 via the bitsycore skiko fork (Route 1a; see
-  [SKIKO-MINGW-FEASIBILITY.md](SKIKO-MINGW-FEASIBILITY.md)) — so there is no
-  fidelity tier below the JVM cross-check. The JVM Compose Desktop target
-  (`:demo:run`) remains the fidelity/parity reference on any host.
-- **Vendor, do not hand-roll.** Copy upstream verbatim wherever it compiles.
-  Edit-to-compile becomes a manual vendor with a `// VENDOR-BASE:` header so the
-  drift tripwire can track it. The litmus test for any divergence: "Is this what
-  upstream does? If not, what real platform constraint forces the difference?"
-  Valid answers name a constraint (e.g. no windowing/input toolkit in K/N ->
-  SDL3). "It was easier" is not valid.
-- **Text stays the port's engine (B6.3 skipped).** Making Skia-leg text truly
-  upstream (`SkiaParagraph`) is a font-subsystem replacement, not a canvas swap:
-  two coexisting font-identity models (the port's name-to-bytes `IconFont` +
-  no-op resolver vs upstream `PlatformFont`/`FontCache`/`FontCollection`), about
-  13 skiko files to re-vendor, about 10 shared actuals to split, a
-  `data.kres`-to-`FontCache` bridge, no green intermediate, and it discards the
-  P3.1 metrics work. ROI is low: the Skia leg already measures text with skiko
-  `Font` metrics (via `currentTextMeasurer` -> `SkiaTextRenderer`), which is how
-  parity reached about 2%. Revisit only if complex-script/bidi fidelity becomes
-  a hard requirement.
-- **Module split (`:ui-graphics` / `:ui-text`) is shelved as infeasible.** Not
-  cosmetic churn as originally scoped: the `sdl3` cinterop is a shared substrate
-  used by 11 graphics-side files AND 12 platform/windowing/node/resources files
-  that stay in `:ui`. Kotlin/Native cannot cleanly share a cinterop klib across a
-  module boundary, which is exactly why they were merged. A real split needs a
-  new non-upstream `:ui-cinterop` base module plus cross-module cinterop
-  api-exposure, which is bigger and more divergent than the "match upstream
-  artifacts" goal it was meant to serve. The one keeper from the attempt:
-  `RenderBackend.drawRoot` now takes `(Canvas) -> Unit`, decoupling the backends
-  from `ComposeRootHost` (a genuine improvement, retained).
-- **Real Skia on Windows K/N shipped (Route 1a).** mingwX64 links the bitsycore
-  skiko fork against `skiko-windows-x64.dll` (with an embedded GNU import lib),
-  published to GitHub Packages and auto-provisioned by the bridge plugin. This
-  replaced the SDL renderer as the Windows path. See
-  [SKIKO-MINGW-FEASIBILITY.md](SKIKO-MINGW-FEASIBILITY.md) for the ABI details
-  and the route trade-offs.
-
-## 5. Convergence status
-
-| Item | Status |
-|------|--------|
-| Guardrails (parity gate, verify-mac runbook, drift + vendor-clean checks) | Done |
-| B2: Skia leg on upstream GraphicsLayer/GraphicsContext | Done |
-| B6.1: Skia leg on upstream `SkiaBackedCanvas` + paint/shader | Done |
-| B6.2: upstream `GraphicsLayer` + delete transient port cluster | Done |
-| B6.3: upstream text (`SkiaParagraph`) on the Skia leg | Skipped (decision) |
-| B5: engine-convergence deltas audit | Done (clean wins spent by B6) |
-| P2.2: composition memory leak | Fixed + soak-gated |
-| P2.3: outsets / blur / renderEffect | Done via upstream `SkiaGraphicsLayer` |
-| P3.1: text metrics parity (17% median -> 2%) | Done |
-| Module split | Shelved (infeasible as specified) |
-| Track A: real Skia on Windows (Route 1a) | Done |
-
-## 6. Remaining and future work
-
-Nothing here blocks day-to-day work. These are the open threads worth
-remembering.
-
-- **WIN-SMOKE (pre-ship, Windows only).** The Mac runbook cannot cover the
-  shipped mingwX64 binary, the Windows-only `PrintWindow` probe, or the
-  common-metadata publish job. Run these on a Windows host before any release.
-  This is the only outstanding verification.
-- **Stabilization at Compose 1.12.0 stable.** The vendored refs are pinned to
-  `v1.12.0-beta03+dev4483` (no clean beta03 tag exists yet, and it is not on
-  Maven). The native side leads the JVM parity leg (forced to beta02, the latest
-  published) by a documented skew. When 1.12.0 stable ships: re-pin both refs to
-  the clean tag, bump the `vComposeJvmVersion` forcing in demo/apidemo/
-  material-symbols to close the skew, then cut the release. The concrete
-  step-by-step (the version map, the ref-bump flow, and the release flow) lives
-  in [TOOLING.md](TOOLING.md#versioning-and-releasing).
-- **Deferred engine deltas (D2-D6, all low ROI under G1).**
-  - D2: split `GraphicsLayerOwnerLayer` per-leg to restore upstream's exact
-    `setLightingInfo` shadow lighting. Feasible (the old RootNodeOwner-coupling
-    blocker was outdated) but high blast radius for a marginal gain; elevation
-    shadows already match JVM.
-  - D3: dedupe `LayerTransformationMatrix.kt` against the now-vendored
-    `Matrices.skiko`. Blocked on D2 (the shared owner-layer hit-test needs a
-    matrix fn usable from the owner layer).
-  - D4/D5: `SemanticsRegion` intersect/difference are stubs, and `CharHelpers`
-    is naive grapheme/bidi vs upstream ICU. Real fidelity gaps, gated on an
-    accessibility or complex-script roadmap.
-  - D6: `Focusability` / `PlatformVelocityTracker` are byte-equal to upstream;
-    vendoring them saves nothing.
-- **Native-resource lifecycle.** Wire `GraphicsLayer`/RenderNode +
-  `SdlImageBitmap.close()` fully into cache eviction and the renderer
-  `destroy()` chain; demote the periodic GC nudge once ownership covers it.
-
-## 7. Hard-won learnings (do not relearn)
-
-- **Minimize-divergence is load-bearing.** A hand-written `notifyLayerIsDirty`
-  that diverged from upstream `OwnedLayerManagerImpl` removed a layer from
-  `dirtyLayers` mid-loop and crashed on any navigation. Screenshots missed it;
-  the interaction probe caught it. Match upstream verbatim; do not hand-roll
-  engine plumbing from a summary.
-- **The composition memory leak (root cause).** The port never called
-  `OwnerSnapshotObserver.clearInvalidObservations()`, which upstream
-  `RootNodeOwner` runs after every measure. Snapshot read-observations for
-  scopes invalidated on dispose lingered forever, each pinning its observed
-  object graph via a Kotlin/Native `ExternalRCRef` (a K/N-heap leak, vmmap
-  Memory Tag 246). Most visible on ripple/indication draws. Fix:
-  `ComposeRootHost.measureAndLayout()` sweeps `clearInvalidObservations()` after
-  layout, plus `ComposeOwner.onDetach` clears the detached node's observations.
-  Found by exact live-counters, static-mode isolation, macOS `leaks`/`heap`/
-  `vmmap`, and component bisection. RSS alone cannot pinpoint a referenced leak;
-  budget heap tooling for this class.
-- **Screenshots miss crashes and settle-timing.** Free-running screenshots on
-  animated/settling screens give false signals. Use render-to-quiescence +
-  virtual frame time for parity, the probe for interaction/crash coverage.
-- **The profiler `present` phase is vsync-capped by the display refresh.**
-  Profile on the target monitor before concluding a frame-rate gap.
-
-## 8. Explicit non-goals
-
-- **Dirty-region / partial present.** Upstream replays the whole scene; the win
-  is not re-recording, not redrawing less.
-- **A custom `cacheKey` API.** Superseded by the real per-node display list.
-- **Vendoring `RootNodeOwner` / the `ComposeScene` stack.** Coupled to skiko's
-  `SkiaLayer` and windowing; it fights the `:window` SDL loop. The port borrows
-  only the layer engine.
-
-## 9. Key files
-
-- `compose/ui/ui/src/nativeMain/.../RenderBackend.kt`: the interface.
-- `compose/ui/ui/src/nativeMain/.../GpuMode.kt`: renderer / driver picker.
-- `compose/ui/ui/src/skikoRendererMain/.../renderer/skia/SkiaRenderBackend.kt`.
-- `compose/ui/ui/src/commonMain/.../node/ComposeRootHost.kt`: root host,
-  hit-test, event dispatch, snapshot observer sweep.
-- `compose/ui/ui/src/commonMain/.../node/impl/ComposeOwner.kt`: the project
-  `Owner` + `GraphicsLayerOwnerLayer` bridge.
-- `compose/ui/ui/src/nativeMain/.../ui/text/SdlParagraph.native.kt`: the bridged
-  `Paragraph` (measurement, hit-test, line metrics, span painting).

SKIKO-MINGW-FEASIBILITY.md

@@ -1,397 +0,0 @@
-# Skiko on mingwX64 — Feasibility & Effort Assessment
-
-Investigation of the effort to run the real Skia leg (`org.jetbrains.skiko`)
-on the Kotlin/Native **mingwX64** target, under the relaxed constraint that a
-**DLL is acceptable** (the static / no-DLL invariant may be dropped). Companion
-to [RENDERER.md](RENDERER.md) §4 "Track A" — which this assessment **partly
-supersedes** (see [Corrections](#corrections-to-renderermd-4) below).
-
-Pins at time of writing: skiko `0.150.1` (Skia m150), kotlin `2.4.0`,
-compose `1.12.0-beta02`.
-
----
-
-## Bottom line
-
-Feasible — and **more tractable than RENDERER.md §4 claims**. Two of that
-section's load-bearing premises are now factually stale:
-
-1. **"Building C++20 Skia to a GNU/mingw archive is an open-ended fork (only
-   abandoned Mozilla-era precedent)."** — **False.** MSYS2 maintains
-   `mingw-w64-skia` at **Skia milestone 143 (C++20)** for `mingw64` (GCC),
-   `ucrt64`, and `clang64` (clang → `x86_64-w64-windows-gnu`), producing
-   `libskia.dll` + a GNU import lib `libskia.dll.a`. Last rebuilt **2026-07-24**.
-   The GNU-ABI recipe is ~8 small GN patches (the key one adds
-   `is_mingw = is_win && (cxx=="g++"||cxx=="clang++")`).
-2. **"The only working route is a runtime DLL, which breaks the no-DLL
-   invariant."** — The DLL route is real, but the reason it works is **not**
-   what the section implies. See the crux below.
-
-**Effort:** ~**1–2 weeks** to a proven spike + a CPU-raster Skia-on-Windows
-prototype; ~**1–2 months** to a tested, GPU-accelerated Windows Skia leg with
-published fork klibs and repo wiring — **plus** permanent
-`bitsycore/skiko`-fork maintenance (re-sync at every skiko bump). Difficulty:
-**research-grade / high**, because no working prior art exists (the two GitHub
-`skiko-mingw64` forks are vaporware — 0 commits ahead of upstream, no mingw
-source set). Confidence: **medium** (high on mechanism, medium on timeline).
-
----
-
-## Spike result — EXECUTED, GREEN ✅ (2026-07-24)
-
-The core de-risking experiment has been **run on this machine** and passed. The
-whole Route 1a link mechanism works on the exact target toolchain (Kotlin
-**2.4.0**, mingwX64, LLVM **21** `ld.lld`, `x86_64-pc-windows-gnu`).
-
-**What was built** (`spike-skiko-mingw/` in this repo):
-- A tiny DLL reproducing skiko's binding shape — an **opaque handle over a real
-  C++/STL object** (`std::string`), **alloc+free paired inside the DLL**, flat
-  `extern "C"` surface. Compiled **MSVC-ABI via `clang-cl /LD /MT /EHsc`**
-  (static CRT). Exports verified undecorated: `spike_make/size/free`.
-- A **GNU import library** (`libspike.dll.a`) generated with `dlltool`.
-- A **Kotlin/Native mingwX64 executable** binding it via cinterop (plain C
-  header) + `linkerOpts("-L… -lspike")`.
-
-**Results:**
-- `linkReleaseExecutableMingwX64` **linked clean** — **KT-65671 did NOT bite**
-  (the DLL path puts zero C++ objects in the K/N link graph, so the
-  `--allow-multiple-definition` / `.drectve __clang_call_terminate` failures
-  never arise). LLVM 21 `ld.lld` is also far newer than the 1.9.x-era reports.
-- Runtime: `SPIKE-RESULT size=7 expected=7 ok=true`, exit 0 — the C++
-  `std::string(7,'x').size()` round-trips through the opaque handle correctly.
-- `objdump -p` confirms the exe imports `spike.dll`, and `spike.dll` depends on
-  **`KERNEL32.dll` only** → **self-contained, no VC++ redist needed**. The exe
-  carries K/N's `msvcrt.dll` while the DLL carries its own static MSVC CRT —
-  **two CRTs coexist in one process** with no issue (ownership paired inside the
-  DLL), empirically confirming the CRT-boundary discipline.
-
-**Implication:** the one load-bearing unknown (does the DLL route link on
-2.4.0?) is resolved **in favour**. Route 1a is de-risked at the mechanism level;
-remaining effort is engineering the real `skiko.dll` (compile skiko's shim +
-skia-pack MSVC Skia into one DLL) and repo wiring — not proving feasibility.
-Feasibility confidence is now **high**; residual medium confidence is on
-timeline only.
-
-Reproduce: `./gradlew -p spike-skiko-mingw linkReleaseExecutableMingwX64`, then
-run the exe with `spike-skiko-mingw/native` on `PATH`.
-
----
-
-## The crux — and why "just use a DLL" is only half the story
-
-**The blocker is a C++ ABI mismatch at the binding boundary, and it is
-orthogonal to static-vs-dynamic linkage.**
-
-- **K/N mingwX64 is GNU/Itanium ABI.** `konan.properties`:
-  `targetTriple.mingw_x64 = x86_64-pc-windows-gnu`,
-  `linker.mingw_x64 = ld.lld.exe`,
-  `linkerKonanFlags.mingw_x64 = -static-libgcc -static-libstdc++ … -lwinpthread`
-  — GCC libstdc++/libgcc, Itanium mangling (`_Z3fooi`).
-- **skia-pack's only Windows Skia is MSVC-ABI** — built with `clang-cl`,
-  `is_trivial_abi=false`, shipped as MSVC `.lib`; C++ exports are MSVC-mangled
-  (`?foo@@YAHH@Z`).
-
-LLVM issue #60847 ("LLD cannot link against MSVC libraries in MinGW toolchain",
-closed *not planned*) confirms the two mangling schemes never reconcile.
-**Wrapping the same MSVC C++ Skia in a DLL does not change this** — a DLL's C++
-exports are still MSVC-mangled. So dynamic-vs-static is a red herring; **the C++
-ABI at whatever boundary the mangled C++ crosses is the wall.**
-
-What makes it tractable is *where that boundary sits in skiko*:
-
-- **skiko's Kotlin↔native boundary is already a flat, unmangled C symbol
-  boundary.** Kotlin declares
-  `@ExternalSymbolName("org_jetbrains_skia_Data__1nSize") external fun _nSize(…)`;
-  `ExternalSymbolName` is a typealias for `kotlin.native.SymbolName`, which
-  resolves to a *plain named symbol* at link. The generated `.def` is
-  header-less (only `linkerOpts`). **No C++ type ever crosses into Kotlin.**
-- **The C++ ABI coupling lives one layer down**, at the *shim↔Skia* link:
-  ~78 `extern "C"` (`SKIKO_EXPORT`) `.cc` files under `src/nativeJsMain/cpp/`
-  that `reinterpret_cast<SkData*>(ptr)->size()` etc. This shim **must share one
-  C++ ABI with Skia** — today they're one GNU-ABI island fused via
-  `-include-binary`.
-
-**Consequence:** a DLL is viable **iff** the *entire* C++ island (shim + Skia)
-is one consistent ABI internally, and only the **flat extern-C export surface**
-crosses to K/N via a generated import library. On x86_64 there is a single
-Windows calling convention and extern-C exports are undecorated on both MSVC and
-mingw, so `ld.lld` links such a DLL via `gendef`+`dlltool` (or directly, LLD
-13+). **The repo already does exactly this for system DLLs** (`sdl3.def`:
-`linkerOpts.mingw_x64 = -lkernel32 -luser32 -lgdi32 …`).
-
-Crucially the extern-C façade **already exists** (the `nativeJsMain/cpp` shim
-exports precisely the `org_jetbrains_skia_*` symbols the K/N side binds) — it is
-**reused, not authored anew**. The catch: no ownership / exceptions / STL may
-cross the C line — skiko is already handle/RefCnt-based, so this holds if
-authored carefully. (The JVM `jvmMain/cpp` bridge exports `Java_…` JNI symbols
-and is **not** reusable — the *native* shim is the right one.)
-
-The non-negotiable that survives all of this: **upstream skiko ships no
-mingwX64 K/N target at all** (`throw GradleException("$os not yet supported")`
-for non-{Mac,iOS,tvOS,Linux}; "Windows" in skiko means the JVM/AWT clang-cl
-path). So this is a **from-scratch skiko build-system port**, not a flag flip.
-
----
-
-## The dominant risk: KT-65671
-
-`KT-65671` ("Kotlin/Native: Failed linking cinterop static library for
-mingwX64", **Open**, filed against 1.9.x, status on 2.4.0 unverified): K/N's
-mingw link step chokes when **fusing an external C++ static archive** —
-`ld.lld` rejects `--allow-multiple-definition`, and
-`-exclude-symbols:__clang_call_terminate` in the objects is rejected in
-`.drectve`. This is skiko's **exact static-fusion pattern**.
-
-Key implication for route choice: a **pure extern-C DLL boundary sidesteps this
-bug class entirely** — no C++ objects enter the K/N link graph; only a flat
-import surface crosses. So, counter-intuitively, the **DLL route is the
-risk-*reducing* route** w.r.t. KT-65671, and it is exactly what the user is
-willing to accept.
-
----
-
-## Routes
-
-### ★ Recommended — DLL with a flat extern-C export, K/N binds via import lib
-
-Put **all** the C++ (skiko's existing shim + Skia) inside one DLL; export only
-the flat `org_jetbrains_skia_*` symbols; bind from a new mingwX64 skiko target
-via a generated import lib. K/N resolves at link; the Windows loader binds
-`skiko.dll` at process start — **no dlopen/`staticLoad` code needed** (the
-shipped `staticLoad()` no-op is fine for the import-lib path).
-
-Two sub-choices for the DLL internals (K/N neither knows nor cares which):
-
-- **1a — MSVC internals (minimal fork).** Recompile skiko's `nativeJsMain/cpp`
-  shim with `clang-cl` against **skia-pack's existing MSVC Windows `.lib`**
-  (`windows-x64` archives are already published). **Zero Skia fork.** Net-new:
-  add `__declspec(dllexport)` to `SKIKO_EXPORT` on this build, a mingw/DLL
-  branch in skiko's build logic, import-lib generation. CRT discipline (MSVC CRT
-  in the DLL vs K/N's static libgcc) is a correctness constraint on the C API
-  (handles + primitives only), not a linkability blocker.
-- **1b — GNU internals.** Build the shim + Skia GNU-ABI (reuse MSYS2's
-  `mingw-w64-skia` patch set) into the DLL. Slightly more Skia-side work, but a
-  single toolchain end-to-end.
-
-**Effort:** ~2–4 weeks once the spike is green. **Risk: medium** (sidesteps
-KT-65671). **"Just works" preserved:** none — ships `skiko.dll` (tens of MB)
-next to `data.kres` (accepted). **Sub-choice 1a is the least-fork option.**
-
-### Route 2 — GNU-ABI static Skia + real mingwX64 skiko target (purist)
-
-Fork skia-pack (or reuse MSYS2's patches) to emit **GNU-ABI static** Skia;
-fork skiko to add a mingwX64 target that recompiles the existing extern-C shim
-GNU-ABI and **static-fuses** exactly as macOS/Linux do today.
-
-**Effort:** Skia build itself is now **days** (MSYS2 proves it). skiko port +
-link reconciliation ~3–6 weeks. **Risk: medium-high** — this route hits
-**KT-65671 head-on** (static C++ archive fusion). **Preserves the static /
-no-DLL invariant** — the only reason to prefer it, and the user said they don't
-need it.
-
-### Route 3 — CPU-raster-only (a scope reduction, not an ABI shortcut)
-
-The repo's `SkiaSurfaceBridge` (`Surface.makeRasterDirect` → `SDL_UpdateTexture`
-→ `SDL_RenderTexture`) needs **no GPU context** and compiles on mingwX64 the
-moment a skiko klib exists. Use it to **skip authoring the Windows GPU bridge**
-for a first cut. Still requires solving Route 1/2's binding problem first.
-**Saves ~1–2 weeks** of GPU-bridge work → the natural **milestone 1** of
-whichever route you pick.
-
-### Baseline — do nothing (already shipping)
-
-Windows renders via the from-scratch **SDL leg** (`SDL_RenderGeometry` +
-SDL3_ttf + FreeType); the **JVM parity target** is the full-fidelity Skia
-reference. The bar any Skia-on-Windows work must clear is "materially better
-than the SDL leg's fidelity, worth the DLL + maintenance cost."
-
----
-
-## Recommended work breakdown (Route 1a, CPU-raster first)
-
-**A. Skia — none (1a) / days (1b).**
-Route 1a reuses skia-pack's published `windows-x64` MSVC `.lib`. (1b: reuse the
-MSYS2 `mingw-w64-skia` PKGBUILD + patches at skiko's pinned milestone; backends
-CPU-raster + `skia_use_gl`, `skia_use_freetype`.)
-
-**B. `bitsycore/skiko` fork — the bulk, medium risk.**
-1. Add `mingwX64()` + a `configureNativeTarget(OS.Windows, Arch.X64, …)` branch;
-   replace the `throw GradleException("$os not yet supported")` / empty
-   `linkerFlags` fall-throughs in `NativeTasksConfiguration.kt` with a Windows
-   branch (PE/COFF, `llvm-ar`).
-2. Compile the **existing** `nativeJsMain/cpp` shim (not the JVM JNI bridge)
-   into `skiko.dll`; make `SKIKO_EXPORT` export the flat symbols
-   (`__declspec(dllexport)` or `--export-all-symbols`/def file).
-3. Generate the GNU import lib (`gendef` + `dlltool` → `libskiko.dll.a`).
-4. cinterop `.def` stays header-less (`linkerOpts`/`libraryPaths`), matching the
-   repo's own idiom. Publish mingwX64 klibs + the DLL.
-
-**C. Windows context actual — deferred behind milestone 1.**
-5. **Milestone 1:** wire only the CPU-raster `SkiaSurfaceBridge` (already
-   Windows-ready).
-6. **Milestone 2:** author `SkiaD3D11Bridge` / `SkiaVulkanBridge` — extract HWND
-   via `SDL_GetWindowProperties`, wrap `DirectContext.makeD3D11`/`makeVulkan`,
-   mirror the Metal/GL bridges' per-frame acquire/present.
-
-**D. This repo's wiring — small, low risk (integration points confirmed).**
-7. `compose/ui/ui/build.gradle.kts` — flip `isSkiaTarget("mingwX64")` to `true`
-   (currently hardcoded `false`, ~line 58); create a `skikoRendererMingwMain`
-   and `mingwX64Main.dependsOn(...)` it (today mingw attaches only to
-   `sdlRendererMingwMain`, lines ~203–206; the skiko tree, lines ~220–235, is
-   created only under `!useSdl3Everywhere` and never for mingw). Add the fork's
-   coords to that source set.
-8. **No new expect/actual needed:** `createRenderBackend` /
-   `rendererPreferredGpuMode` are `expect`s in `nativeMain` with `actual`s in
-   `skikoRendererMain` and `sdlRendererMain`; attaching mingwX64 to the skiko
-   source set makes the Skia actual resolve for Windows (one renderer source set
-   per target — the existing invariant).
-9. Add a Windows GPU-bridge branch to `rendererPreferredGpuMode()`; verify with
-   the demo/apidemo (`--gpu`, `--screenshot`) and the parity harness.
-
-Repo surface to cover is narrow: **~67 `org.jetbrains.skia` classes + 5
-`org.jetbrains.skiko.node` APIs** (`RenderNode`, `RenderNodeContext`,
-`SkikoRenderDelegate`, `SystemTheme`, `currentSystemTheme`).
-
----
-
-## The one spike to run first (~1–2 days)
-
-Before any fork work, **empirically test the K/N-mingw link path**: build a
-trivial `extern "C"` C++ DLL (one function returning a handle + one that uses
-it) — or consume MSYS2's `mingw-w64-x86_64-skia` DLL + `libskia.dll.a`
-directly — from a throwaway mingwX64 K/N project via cinterop + import lib, and
-**run it**. This answers, in a day instead of a month:
-
-- Does K/N mingw link + call a GNU-ABI DLL via an import lib at all?
-- Does **KT-65671** reproduce on Kotlin 2.4.0 (import-lib vs static fusion)?
-- DLL vs static-fusion behaviour on this toolchain.
-
-If green, Routes 1/2 are de-risked. (Caveat: MSYS2 Skia exports Skia's *mangled
-C++* symbols, so a direct cinterop of it tests only the *link mechanism*, not
-the skiko API — for the API you still need the extern-C shim. The trivial-C-DLL
-variant is the cleaner mechanism test.)
-
----
-
-## Biggest risks / unknowns
-
-1. **KT-65671** — whether K/N's mingw link works on 2.4.0 for external C++;
-   the DLL route sidesteps it, the static route hits it. *The single fact that
-   swings the effort.*
-2. **Toolchain matching** — Konan bundles LLVM 16 clang + `ld.lld`; the C++20
-   Skia + shim must be built by a toolchain whose objects/imports LLD accepts.
-3. **CRT / ownership discipline** across the C boundary (only matters for 1a).
-4. **Maintenance** — SKIKO-446 / SKIKO-611 are Open, unassigned → almost
-   certainly a **permanent `bitsycore/skiko` fork** with per-bump re-sync tax.
-
----
-
-## Recommendation
-
-Pursue **Route 1a** (skiko fork producing a DLL with a flat extern-C export over
-skia-pack's existing MSVC Windows Skia), **scoped CPU-raster first** (Route 3
-milestone), GPU bridge second. It matches the user's accepted DLL tolerance,
-requires **zero Skia fork**, and **dodges KT-65671**. Keep Route 2 (static,
-GNU-ABI) in reserve only if reclaiming the no-DLL invariant later becomes
-valuable. **Run the MSYS2/trivial-DLL spike before committing to any fork.**
-
----
-
-## Implementation status — WORKING END-TO-END ✅ (2026-07-24)
-
-**`demo.exe` (mingwX64) renders the Material 3 Buttons screen through real Skia**
-and wrote a 1000×700 screenshot ("settled at frame 3"), using the CPU-raster
-`SkiaSurfaceBridge` backed by the forked `skiko-windows-x64.dll`. Route 1a is
-complete. Build/run:
-
-```
-# fork (C:/Dev/skiko), one-time env: SKIKO_VSBT_PATH=<VS BuildTools dir>
-./gradlew :skiko:publishKotlinMultiplatformPublicationToMavenLocal \
-          :skiko:publishMingwX64PublicationToMavenLocal -Pskiko.native.windows.enabled=true
-# compose repo
-./gradlew :demo:linkDebugExecutableMingwX64 -PwindowsSkia=true
-cp <fork>/skiko/build/out/link/Release-windows-native-x64/skiko-windows-x64.dll <demo exe dir>/
-<demo exe dir>/demo.exe --screenshot=out.bmp --screen=Buttons
-```
-
-Fork fixes needed beyond the DLL build (skiko uses a CUSTOM hierarchy template,
-`applyDefaultHierarchyTemplate=false`):
-1. `sourceHierarchy.kt` — add `group("windows"){ withMingwX64() }` under `native`
-   (else the mingwX64 klib compiles EMPTY — missing all of `org.jetbrains.skia`).
-2. `SkikoProjectContext` — add `supportNativeWindows` into `supportAnyNative` so
-   the `@SymbolName` opt-in reaches the mingw compile.
-3. `Resources.native.kt` — `ftell` is 32-bit `Int` on Windows (LLP64); `==` fix.
-4. `windowsMain` actuals for `SkiaLayer` / `currentSystemTheme` (linux is a stub).
-5. Force-export the 2 ICU symbols (`uloc_getDefault_skiko`,
-   `uloc_toLanguageTag_skiko`) that Kotlin binds via `@SymbolName`.
-
-Compose-repo wiring (all behind `-PwindowsSkia=true`): `mavenLocal()` in
-settings, `isSkiaTarget("mingwX64")`, a separate `skikoRendererMingwMain` tree
-on the fork's **root** coord (`org.jetbrains.skiko:skiko:0.0.0-SNAPSHOT` — the
-platform artifact alone doesn't expose api-elements), `PlatformGpu` Windows →
-`Software`, and a one-line `PlatformGpu.mingw.kt`.
-
-## Earlier milestone — fork BUILDS ✅ (2026-07-24)
-
-Route 1a is not just designed — the `bitsycore/skiko` fork now **builds the
-native Windows Skia DLL + a mingwX64 klib** on this machine (`C:/Dev/skiko`,
-skiko `v0.150.1`).
-
-Edits made (all in the fork):
-- `src/nativeJsMain/cpp/common.h` — `SKIKO_EXPORT` gains `__declspec(dllexport)`
-  under a `SKIKO_WINDOWS_DLL` guard.
-- `skiko/build.gradle.kts` — `configureNativeTarget(OS.Windows, Arch.X64,
-  mingwX64())`, gated behind `-Pskiko.native.windows.enabled=true`.
-- `buildSrc/.../NativeTasksConfiguration.kt` — a Windows compile branch
-  (clang-cl + `-DSKIKO_WINDOWS_DLL`) and a new `configureWindowsNativeTarget`
-  that links `skiko-windows-x64.dll` via `lld-link` (reusing the JVM template +
-  `resolveBinaryInputs(…, TargetEnv.JVM, …)`), auto-generates the GNU import lib
-  (`dumpbin`→`.def`→`dlltool`), and wires the K/N cinterop `linkerOpts`.
-
-Results:
-- The native bridge (`nativeJsMain/cpp`) **compiled on Windows with clang-cl,
-  zero source changes.** The only link fix was adding `d3d12.lib
-  d3dcompiler.lib dxgi.lib` for Skia's `SK_DIRECT3D` backend.
-- Produced **`skiko-windows-x64.dll` (14.2 MB, 1005 exported
-  `org_jetbrains_skia_*` symbols)**, `libskiko-windows-x64.dll.a` (GNU import
-  lib), and the **mingwX64 klib** (`build/classes/kotlin/mingwX64/main/klib`).
-
-Prerequisite for any skiko Windows build on this box:
-`SKIKO_VSBT_PATH='C:\Program Files (x86)\Microsoft Visual Studio\18\BuildTools'`
-(Gradle's VS locator doesn't auto-find VS 18 BuildTools).
-
-Remaining: publish the fork to `mavenLocal` → a tiny K/N mingw consumer that
-calls a real Skia function (links the import lib, runs with the DLL on `PATH`)
-for the definitive end-to-end proof → then wire the compose repo (flip
-`isSkiaTarget("mingwX64")`, add `skikoRendererMingwMain`, ship the DLL next to
-the exe, CPU-raster `SkiaSurfaceBridge` first). One known TODO: the klib's
-`linkerOpts` use an absolute import-lib path (fine same-machine; make relative /
-bundled for distribution).
-
-## Corrections to RENDERER.md §4
-
-The shelving note should be updated — its two central technical claims are stale
-as of 2026-07:
-
-- "GNU-ABI Skia is an open-ended fork / only abandoned Mozilla-era precedent" —
-  **false**: MSYS2 maintains a modern (m143, C++20) GNU-ABI Skia, rebuilt
-  routinely.
-- The accurate residual blocker is **the K/N-side link/binding port**
-  (KT-65671 + authoring the mingwX64 skiko target), **not** building Skia, and
-  the DLL route is *risk-reducing*, not merely "the only working route."
-
----
-
-## Sources (primary, load-bearing)
-
-- skiko v0.150.1: `skiko/build.gradle.kts`, `buildSrc/.../NativeTasksConfiguration.kt`,
-  `src/commonMain/kotlin/org/jetbrains/skia/Data.kt`,
-  `src/nativeMain/kotlin/org/jetbrains/skia/Actuals.native.kt`,
-  `src/nativeJsMain/cpp/common.h`, `.../impl/Library.native.kt`
-- skia-pack `script/build.py`; skia.org build docs
-- Kotlin `konan.properties` (v2.2.0); kotlinlang native-c-interop / target-support
-- LLVM issue #60847; **KT-65671**; **SKIKO-446**, **SKIKO-611**
-- MSYS2 `mingw-w64-skia` (packages.msys2.org; MINGW-packages PKGBUILD + patches)
-- Vaporware forks: github.com/Cdm2883/skiko-mingw64, crowforkotlin/skiko-mingw64
-- Repo: `compose/ui/ui/build.gradle.kts`, the `SkiaMetalBridge` / `SkiaGLBridge`
-  / `SkiaSurfaceBridge` / `RenderBackendFactory` seam

TODO.md

@@ -1,166 +0,0 @@
-# TODO.md
-
-Everything the port currently leaves as a no-op, stub, hardcode, or partial
-implementation, plus the gaps worth closing before a stable 1.12 release. This
-is an audit of PROJECT code only (the `*.native.kt` / `com.compose.sdl.*`
-actuals); vendored upstream under `src/vendor/` is out of scope.
-
-Severity is a rough guide, not a mandate:
-
-- **Blocker** for stable: a capability a typical desktop app expects that is
-  currently absent or broken.
-- **Nice-to-have**: real gap, but the app works without it.
-- **Cosmetic**: minor fidelity or edge-case behavior.
-
-Context for prioritizing: the project goal is **G1, cheap upstream-tracking**
-(see [RENDERER.md](RENDERER.md)). There is now ONE renderer — **Skia**
-(macOS/Linux official Skiko; mingwX64 the bitsycore skiko fork), so Windows
-renders through real Skia. The priorities below are the cross-cutting platform
-gaps that affect every OS. JVM Compose Desktop remains a parity cross-check.
-
-Renderer-internal cleanups (the deferred D2 shadow-lighting split, D3 matrix
-dedupe) live in [RENDERER.md](RENDERER.md#6-remaining-and-future-work), not
-here.
-
-## Completed
-
-Platform / cross-cutting:
-
-- **Locale / i18n** (`5d03711f`) — `Locale.current` / `LocaleList.current` read the
-  OS locale via SDL, unlocking the 40+ Material 3 translations. The date/number
-  format tail remains (section C).
-- **IME text input** (`500c49e4`) — a real `PlatformTextInputSession` routes SDL
-  committed + composing text to the focused field (commit replaces the
-  composition); `SDL_SetTextInputArea` positions the OS candidate window.
-- **Cursor icons** (`1fcc0828`) — `Modifier.pointerHoverIcon` drives the OS cursor
-  via SDL (I-beam over text, hand over links).
-- **WindowInfo** (`bad23073`) — `isWindowFocused` + `containerSize` / `containerDpSize`
-  report real values (were hardcoded `true` / `Zero`).
-- **ImageBitmap from bytes** — `ByteArray.decodeToImageBitmap()` /
-  `createImageBitmap(bytes)` decodes encoded image bytes; was
-  `UnsupportedOperationException`. Verified `demo --imagebytestest`.
-- **`FontFamily.Monospace`** — generic families map to `"generic:<name>"`;
-  `registerGenericFonts` registers bundled NotoSansMono under `generic:monospace`
-  (bundled only when the app references it). Verified `demo --fonttest`.
-
----
-
-## Release-blocking shortlist for stable 1.12
-
-The cross-cutting items to weigh first (all detailed below):
-
-1. **No copy/paste context menu** (section B). Keyboard copy works; there is no
-   right-click or selection toolbar (the desktop path is the right-click context
-   menu, upstream TODO CMP-7819).
-2. **Accessibility is entirely absent** (section A). Decide whether stable
-   requires any screen-reader support at all.
-3. Fonts (section D): compose-resources `Font(Res.font.x)` works, and
-   `FontFamily.Monospace` now renders NotoSansMono. Remaining: `Serif`/`Cursive`
-   generics (no bundled font) and the androidx `Font(bytes)`/`PlatformFontLoader`
-   path. Nice-to-have, not a blocker.
-
----
-
-## A. Accessibility (entirely absent)
-
-No accessibility bridge exists. A real `SemanticsOwner` is built but never
-surfaced to any OS accessibility API (no NSAccessibility / UIA / AT-SPI, no SDL
-a11y). Screen readers get nothing.
-
-- `compose/ui/ui/src/nativeMain/.../node/impl/ComposeOwner.kt:340` · `semanticsOwner` is instantiated but never read; no traversal into a platform a11y tree. A real a11y controller would walk the semantics tree and map roles/labels/actions to a native AT bridge. **Blocker for a11y.**
-- `compose/ui/ui/src/nativeMain/.../platform/CompositionLocals.native.kt:31` · `LocalPlatformScreenReader` default throws (`error(...)`); never provided by any window. Screen-reader-active queries are unavailable. **Blocker for a11y.**
-- `compose/ui/ui/src/nativeMain/.../node/impl/ComposeOwner.kt:297` · `accessibilityManager` implements only `calculateRecommendedTimeoutMillis` (passthrough); no announce/focus/event surface. **Nice-to-have.**
-- `compose/ui/ui/src/nativeMain/.../semantics/SemanticsRegion.native.kt:14` · `StubSemanticsRegion.intersect()`/`difference()` hardcode `false`; only `set`/`bounds` work. Region math for semantics culling is inert. **Nice-to-have.**
-
-## B. Text toolbar and context menus (copy / paste / select-all)
-
-- `compose/ui/ui/src/nativeMain/.../node/impl/ComposeOwner.kt:311` · `textToolbar` is a stub: `showMenu`/`hide` NOP, `status` always `Hidden`. NOTE: the floating toolbar is gated on `isInTouchMode`, so on desktop (mouse) it never shows anyway — the desktop path is the right-click context menu below. **Nice-to-have (touch only).**
-- `compose/foundation/.../text/selection/SelectionActuals.native.kt:42` · `addSelectionContainerTextContextMenuComponents` NOP (upstream TODO CMP-7819). No right-click copy/select-all menu for `SelectionContainer`. **Blocker for desktop text UX.**
-- `compose/foundation/.../text/selection/TextFieldSelectionManager.native.kt:24` and `compose/foundation/.../text/input/internal/selection/TextFieldSelectionState.native.kt:36` · `addBasicTextFieldTextContextMenuComponents` NOP for both the legacy and state-based `BasicTextField`. **Blocker for desktop text UX.**
-
-## C. Locale / i18n tail (needs locale-aware DATA, no ICU on K/N)
-
-`Locale.current` / `LocaleList.current` are wired to the OS (see Completed). The
-rest needs month/weekday name tables and date/number patterns, which Kotlin/Native
-has no ICU for; SDL reports language + country only (no script subtag, no
-calendar/clock/number prefs). These require a bundled CLDR subset or a K/N i18n lib.
-
-- `compose/material3/.../CalendarLocale.native.kt:20` · locale-agnostic stub: `toString()` fixed `"en"`, single shared instance, `equals` treats all instances as equal. A separate type from `ui.text.intl.Locale`; needs its own wiring so `CalendarModel`/`PlatformDateFormat` can vary by locale. Inert until `PlatformDateFormat` is localized. **Nice-to-have (DatePicker/TimePicker).**
-- `compose/material3/.../internal/PlatformDateFormat.native.kt` · multiple hardcodes:
-  - `:27` `weekdayNames` hardcoded English full/short names (DatePicker shows English day initials regardless of locale). **Blocker for localized DatePicker.**
-  - `:32` `formatWithPattern`/`formatWithSkeleton` ignore the pattern/skeleton and always emit ISO `yyyy-MM-dd`. **Blocker for localized DatePicker.**
-  - `:25` `firstDayOfWeek` hardcoded `1` (Sunday); locale-dependent. **Nice-to-have.**
-  - `:44` `parse()` only accepts ISO `yyyy-MM-dd`, ignoring pattern/locale. **Nice-to-have.**
-  - `:62` `getDateInputFormat()` hardcoded `yyyy-MM-dd` / `'-'`. **Nice-to-have.**
-  - `:65` `is24HourFormat()` hardcoded `true`. **Cosmetic.**
-- `compose/ui/ui/src/nativeMain/.../text/platform/NativeStringDelegate.native.kt:17` · `toUpperCase`/`toLowerCase` use locale-independent stdlib casing; the `locale` param is ignored (wrong for Turkish dotted/dotless i, etc.). **Cosmetic.**
-- `compose/ui/ui/src/nativeMain/.../text/intl/Locale.native.kt` · `Locale.isRtl()` not implemented; the pipeline is LTR-only (`SdlParagraph.native.kt` `getBidiRunDirection` always returns `Ltr`; owners/DrawScopes default `LayoutDirection.Ltr`). No RTL shaping. **Nice-to-have.**
-- No `NumberFormat` / currency / decimal-grouping actual exists; numbers render via `toString()` with `.` decimal and no grouping regardless of locale. **Cosmetic.**
-
-## D. Font resolution
-
-**Custom fonts via compose-resources work.** `org.jetbrains.compose.resources.Font(Res.font.x)`
-loads the bytes and registers them with the project font registry (IconFont → NamedFont),
-so the standard CMP way to bundle a font renders correctly.
-
-- `FontFamily.Serif` / `FontFamily.Cursive` still collapse to the default sans — no bundled
-  serif/cursive font yet (`downloadNotoFonts` fetches Sans + SansMono only). Register one under
-  `generic:serif` / `generic:cursive` the same way to enable them. **Nice-to-have.**
-- `compose/ui/ui/src/nativeMain/.../text/font/FontFamilyResolver.native.kt:32` · `SdlPlatformFontLoader.loadBlocking`/`awaitLoad` are NOP; the androidx `PlatformFontLoader` path (`ResourceFont` / `Font(bytes)` / `LoadedFontFamily`) doesn't load. Use the working compose-resources `Font()` instead. **Nice-to-have.**
-- `compose/ui/ui/src/nativeMain/.../text/font/FontFamilyResolver.native.kt:38` · `PlatformFontFamilyTypefaceAdapter.resolve` returns `TypefaceResult.Immutable(Unit)` (the renderer resolves by name, so harmless). **Nice-to-have.**
-- `compose/ui/ui/src/nativeMain/.../text/font/FontFamilyResolver.native.kt:69` · deprecated `createFontFamilyResolver(fontResourceLoader)` ignores the supplied loader. **Cosmetic.**
-
-## E. Text rendering details
-
-- `compose/ui/ui/src/nativeMain/.../text/SdlParagraph.native.kt:376` · `drawNativeText` accepts and ignores text `Shadow`, stroke `DrawStyle`, and non-`SrcOver` blend, so those never render on text. **Cosmetic.**
-- `compose/foundation/.../text/StringHelpers.native.kt:31` and `compose/ui/ui/src/nativeMain/.../text/CharHelpers.native.kt:14` · `findPrecedingBreak`/`findFollowingBreak` (and `offsetByCodePoints`) do a codepoint/surrogate walk only, with no ICU grapheme clusters, so caret movement and backspace split combining marks and emoji ZWJ sequences. **Nice-to-have.**
-
-## F. Drag and drop
-
-Drop INTO the window (files + text) is fully wired and works. Drag OUT does not.
-
-- `compose/ui/ui/src/nativeMain/.../draganddrop/Sdl3DragAndDropOwner.kt:38` · `requestDragAndDropTransfer` is a NOP and `isRequestDragAndDropTransferRequired` returns `false`; `Modifier.dragAndDropSource` compiles but no OS-level drag leaves the window. Needs per-OS native work (NSDraggingSession / DoDragDrop / XDND); SDL3 has no portable start-drag. **Nice-to-have.**
-- `compose/ui/ui/src/nativeMain/.../draganddrop/Sdl3DragAndDropOwner.kt:119` · incoming transfer carries only file paths + a text blob; no image/URL/custom-MIME payloads. **Cosmetic.**
-- `compose/foundation/.../draganddrop/DragAndDropSource.native.kt:36` · no drag-shadow / drag-image feedback for internal DnD (upstream skiko renders one). **Cosmetic.**
-
-## G. Window and platform info
-
-- Multi-monitor: no display enumeration or per-monitor placement anywhere (`SDL_GetDisplays`/`SDL_GetDisplayBounds`/`SDL_GetDisplayForWindow` unused). **Nice-to-have.**
-- `compose/ui/ui/src/nativeMain/.../platform/PrefetchLocals.native.kt:18` · `LocalPlatformPrefetchScheduler` default is a NOP scheduler; lazy lists skip ahead-of-time item composition (correctness fine, possible scroll-in jank). **Nice-to-have (perf).**
-- `compose/ui/ui/src/nativeMain/.../node/impl/ComposeOwner.kt:324` · `autofill`/`autofillManager` are null; `requestAutofill` NOP. **Nice-to-have.**
-- `compose/ui/ui/src/nativeMain/.../node/impl/ComposeOwner.kt:279` · `hapticFeedBack.performHapticFeedback` NOP (no desktop pointer haptics API). **Cosmetic.**
-- `compose/ui/ui/src/nativeMain/.../node/impl/ComposeOwner.kt:287` · deprecated `clipboardManager` `setText`/`getText` NOP, and `clipboard.getClipEntry` null. Harmless: the real `LocalClipboard` (text + PNG image via SDL3) works. **Cosmetic.**
-- `compose/foundation/.../text/input/internal/selection/TextFieldSelectionState.native.kt:44` · `ClipboardPasteState.hasClip` aliased to `hasText`, so image-only clipboard is not detected for the paste affordance. **Cosmetic.**
-
-## H. Skia renderer anomalies
-
-Skia is the renderer everywhere, so its bugs are rarely tracked here. This one
-surfaced while adding BlendMode coverage (`demo --blendtest`):
-
-- `BlendMode.Multiply` renders wrong. A filled `drawRect` with opaque
-  `Color.Cyan` over opaque `Color.Yellow` reads back `(0,0,255)` blue; the
-  multiply formula can only yield `(0,255,0)` green for opaque cyan×yellow.
-  `Plus` and `Modulate` composite correctly on the same path, so
-  `paint.blendMode` IS applied — the fault is specific to `MULTIPLY` (likely a
-  Metal-backend / premultiply interaction in the graphics-layer flatten, not
-  the `BlendMode.toSkia()` map, which is correct). Needs isolating on the Skia
-  draw path. **Nice-to-have.**
-
-## J. Needs further review (2026-07 bug audit)
-
-An audit (parallel passes over the renderer and the text/input/event actuals)
-surfaced these. The clear, contained bugs were fixed in the same pass; the items
-here are left open because they are either invasive, risky, or a judgement call.
-(The renderer-side fixes from that pass predate the single-Skia consolidation and
-are no longer tracked here.)
-
-Fixed in the audit (for reference, not open work): `Locale.region` no longer
-returns the language for a single-subtag tag; and a `MOUSE_LEAVE` now clears
-hover so a widget doesn't stay highlighted after the cursor exits.
-
-Open — platform / input:
-
-- **Pointer coords are truncated to Int before DPR scaling** (`SDL3EventMapper.kt` ~78-97, `LegacyPointerEvent.kt` x/y are `Int`, consumed in `ComposeWindow.kt:756`). On a 2× display a click at logical (100.9, 50.4) becomes physical (200,100) instead of (~201,~100), so hit-testing / caret placement quantizes to 2-physical-px steps near glyph boundaries. Fix means widening the pointer event to `Float` through the pipeline — invasive, hence deferred. **Review.**
-- **A window created unfocused is still promoted to RESUMED** (`ComposeWindow.kt:575-576, 713-719`). `windowFocused`/`windowVisible` default `true`, so a second `Window {}` opened while another holds focus (or one opened minimized) reports `RESUMED` until SDL later delivers a focus/minimize event. Should query `SDL_GetWindowFlags` at creation. **Review.**
-- **IME text-input area is only pushed on the first `TEXT_EDITING`** (`ComposeWindow.kt:803`; `updateImeArea()` not called on focus gain / first `StartTextInput` / caret move). The first candidate popup can appear at (0,0) before correcting. The rect math itself is correct. **Review.**
-- **`Snapshot.sendApplyNotifications()` is called synchronously inside the global write observer** (`ComposeWindow.kt:143-146`). Compose Desktop's `GlobalSnapshotManager` deliberately defers it to a separate dispatch; calling it per-write is redundant (the main loop already calls it each frame) and risks re-entrancy during snapshot application. Verify against the runtime's guard before changing — behaviour-sensitive. **Review (risky).**

TOOLING.md

@@ -21,6 +21,15 @@ python3 scripts/build-sdl/build-all.py sdl3       # rebuild the step
 Needs `git`, `cmake`, and Python 3 on every host (`ninja` is fetched when
 absent). Run it once per machine, or after bumping the pinned version.
 
+The static lib is built **slim**: the port uses SDL only for video/window,
+events, clipboard, file dialogs, GL/Metal contexts, the CPU-raster `SDL_Render`
+blit, filesystem, cursor, locale, theme, and text input/IME. `build-all.py`
+disables every unused subsystem — audio, joystick, haptic, hidapi, sensor,
+power, camera, GPU, offscreen, virtual-joystick (all zero-reference), plus
+tests/examples and the Windows D3D12 driver. If a consumer app ever needs one of
+these (e.g. SDL audio), re-enable its `-DSDL_*` flag in `build-all.py` and
+rebuild — a build-time change, no code edit.
+
 ## Vendoring upstream Compose
 
 Most `androidx.compose.*` code is copied byte for byte from
@@ -110,6 +119,21 @@ CDN_PROFILE=1 CDN_FORCERENDER=1 ./demo/build/bin/macosArm64/debugExecutable/demo
 Note: `present` is vsync-blocking, so profile on the target refresh rate before
 drawing conclusions about a frame-rate gap.
 
+### Text metrics diagnostic
+
+Set `CDN_TEXT_METRICS=1` and run any app to dump, per built paragraph, the font
+scaler's `ascent`/`descent`/`leading`, the resolved `familyName` + `fontPx`, and
+the resulting paragraph line box (`paraHeight`, `line0[ascent/descent/baseline/
+height]`). Its job is the mac-vs-Windows vertical-spacing question (PLAN.md §1b):
+the SAME `NotoSans.ttf` bytes go through a different Skia `FontMgr` scaler per
+host (CoreText / fontconfig-FreeType / DirectWrite), which can pick different
+metric tables. Run it on native AND on the JVM parity app on the SAME host and
+diff the lines — Windows-native must match skiko-JVM-Windows.
+
+```bash
+CDN_TEXT_METRICS=1 demo.kexe --screen=Buttons --screenshot=/tmp/b.bmp
+```
+
 ### Demo probes
 
 `:demo` ships headless regression probes driven by CLI flags, used by the
@@ -136,7 +160,7 @@ gradlew.bat :apidemo:runDebugExecutableMingwX64
 ```
 
 mingwX64 renders through Skia via the **bitsycore skiko fork**, consumed from
-GitHub Packages as `org.jetbrains.skiko:skiko:0.150.1-mingw.1` (macOS/Linux use
+GitHub Packages as `com.bitsycore.skiko:skiko:0.150.1-mingw.1` (macOS/Linux use
 official Skiko). The runtime `skiko-windows-x64.dll` is auto-provisioned next
 to the executable by the bridge plugin — no manual copy. The fork itself is
 published by a separate GitHub Actions workflow in the fork repo, out of band
@@ -158,10 +182,10 @@ single file to edit; know which axis you are changing.
 
 | Version | Where | Notes |
 |---------|-------|-------|
-| Project release version | The git tag `vX.Y.Z`. `PUBLISH_VERSION` (from the tag) feeds `vPublishVersion` in `build.gradle.kts`, which strips the leading `v`. Group is `com.bitsycore.compose.sdl`. | Set by the tag, not edited by hand. A non-publish build is `0.0.0-SNAPSHOT`. |
+| Project release version | The git tag `vX.Y.Z`. `PUBLISH_VERSION` (from the tag) feeds `vPublishVersion` in `build.gradle.kts`, which strips the leading `v`. Groups mirror upstream per area (`com.bitsycore.compose.<area>:<module>`, e.g. `com.bitsycore.compose.ui:ui`); project-only modules use `com.bitsycore.compose.sdl` and `:desktop-native-window` is `com.bitsycore.compose` — see `groupFor()` in the root build. | Set by the tag, not edited by hand. A non-publish build is `0.0.0-SNAPSHOT`. |
 | Vendored Compose (native side) | `COMPOSE_CORE_REF` and `COMPOSE_REF` in `scripts/compose-fork/compose.properties`, plus `compose` in `gradle/libs.versions.toml`. | Pin to a durable tag (not a `+dev` commit upstream may GC). Re-sync after changing. |
 | JVM parity forcing | `vComposeJvmVersion` in `demo`, `apidemo`, and `material-symbols` `build.gradle.kts`. | Must be a version PUBLISHED to Maven Central. It may lag the vendored native ref (a documented skew) until the matching version is published. |
-| Skiko | `skiko` in `gradle/libs.versions.toml`. | macOS/Linux use official Skiko; mingwX64 uses the bitsycore fork (`0.150.1-mingw.1` from GitHub Packages), published out of band by the fork repo's own workflow. Must expose the `org.jetbrains.skiko.node` `RenderNode` / `GraphicsContext` API the vendored compose-core uses. Verify with a throwaway `skikoRendererMain` compile if unsure. |
+| Skiko | `skiko` in `gradle/libs.versions.toml`. | macOS/Linux use official Skiko (`org.jetbrains.skiko`); mingwX64 uses the bitsycore fork (`com.bitsycore.skiko:skiko:0.150.1-mingw.1` from GitHub Packages), published out of band by the fork repo's own workflow. Must expose the `org.jetbrains.skiko.node` `RenderNode` / `GraphicsContext` API the vendored compose-core uses (the fork keeps upstream's `org.jetbrains.skiko.*` package names; only the Maven coord is rebranded). Verify with a throwaway `skikoRendererMain` compile if unsure. |
 | SDL3 | `scripts/build-sdl/build-sdl.properties`. | Rebuild `libs/` with `build-all.py` after any change. |
 | Bridge substituted version | Defaults to the bridge plugin's own published version; consumers override with the `composeDesktopNative.version` Gradle property. | The plugin publishes with the release tag, so a consumer on the matching plugin version resolves the right klibs automatically. |
 
@@ -187,16 +211,25 @@ Run this on each upstream bump; it is the flow that keeps the sync tax low.
 
 1. Complete the ref-bump flow above and confirm it is green. For a STABLE
    release, `vComposeJvmVersion` should match the vendored ref (no skew).
-2. On a Windows host, run `gradlew :window:compileCommonMainKotlinMetadata`.
+2. On a Windows host, run `gradlew :desktop-native-window:compileCommonMainKotlinMetadata`.
    Only Windows compiles the full common-metadata variant table, and the root
    KotlinMultiplatform publications live there; a macOS-only publish leaves the
    roots without mingwX64 variants (this bit v0.1.15).
-3. `git tag vX.Y.Z && git push origin vX.Y.Z`. This triggers `.github/workflows/publish.yml`.
+3. Refresh the klib API baselines: on a Windows host (JDK 21, matching CI) run
+   `./gradlew apiDump` and commit any diff. Not a hard gate yet — the API is
+   pre-stable and `apiCheck` isn't wired — but regenerating each release keeps
+   the baselines honest so the eventual gate is a no-op. `macosArm64` is inferred
+   from the linux/mingw ABIs (accurate for the target-independent Compose
+   surface); `:sdl-core` (cinterop) and `:material-symbols` (generated icon maps)
+   are excluded via `apiValidation.ignoredProjects`. Best host: Windows — it
+   builds the mingw slice (the fork's unique surface) for real and only infers
+   macos; the macos ABI is target-independent for the tracked pure-Kotlin modules.
+4. `git tag vX.Y.Z && git push origin vX.Y.Z`. This triggers `.github/workflows/publish.yml`.
 
 What the publish job does, so you can read a failure:
 
 - Each host publishes only its own target's publications to GitHub Packages
-  under `com.bitsycore.compose.sdl:*`. Windows additionally publishes the root
+  under their per-area `com.bitsycore.compose.*` coords. Windows additionally publishes the root
   KotlinMultiplatform metadata, the `jvm` publication, and the bridge plugin
   (only Windows declares every target).
 - The `MODULES` list in the workflow must stay in sync with the modules in

apidemo/build.gradle.kts

@@ -81,7 +81,7 @@ kotlin {
         }
         nativeMain {
             dependencies {
-                implementation(project(":window"))
+                implementation(project(":desktop-native-window"))
                 implementation(libs.ktor.client.curl)
             }
         }

apidemo/src/commonMain/kotlin/ViewerPanel.kt

@@ -908,7 +908,7 @@ private fun buildBodyChunks(inText: String, inAnn: AnnotatedString, inLinesPerCh
 
 /** Offsets where each source line starts (line i spans [starts[ i], starts[i+1]-1),
 the -1 dropping the '\n'; the last line runs to the string end). One cheap O(n)
-scan, memoised — replaces the old gutter pre-pass that ran measurer.wrap() on
+scan, memoised — replaces the old gutter pre-pass that measured wrapping on
 every one of N lines on each width change (the other half of the freeze). */
 private fun lineStartOffsets(inText: String): IntArray {
     val vStarts = ArrayList<Int>(64)
@@ -963,10 +963,10 @@ internal fun BodyView(
     val vGutterWidth = (vDigits * 7 + 4).dp
     // Body wrap width (physical px, from onSizeChanged), reported by the body
     // Box once it's laid out (0 on the first frame). The gutter numbering
-    // depends on it — see vNumbers. NativeTextMeasurer.wrap expects the font
+    // depends on it — see vNumbers. Wrap measurement expects the font
     // size + max-width in the SAME unit (both physical px on Retina), so we
-    // scale 12.sp through the current density here, matching what SdlParagraph
-    // does when it builds the body's real paragraph.
+    // scale 12.sp through the current density here, matching what the paragraph
+    // engine does when it builds the body's real paragraph.
     var vBodyWidthPx by remember { mutableStateOf(0) }
     val vFontPx = with(LocalDensity.current) { 12.sp.toPx().toInt() }
     // Horizontal scroll for no-wrap mode (read-only body only); dormant when wrapping.

apidemo/src/nativeMain/kotlin/compat/Compat.native.kt

@@ -16,7 +16,13 @@ import com.compose.sdl.res.painterResource
 import com.compose.sdl.revealInFileManager
 import com.compose.sdl.showOpenFileDialog
 import com.compose.sdl.showSaveFileDialog
-import com.compose.sdl.text.currentTextMeasurer
+import com.compose.sdl.text.namedFontFamily
+import androidx.compose.ui.text.Paragraph
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.createFontFamilyResolver
+import androidx.compose.ui.unit.Constraints
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.sp
 import io.ktor.client.*
 import io.ktor.client.engine.curl.*
 import okio.FileSystem
@@ -49,8 +55,31 @@ actual fun removeMemoryImage(inKey: String) = removeMemoryResource(inKey)
 actual fun memoryImagePainter(inKey: String, inSvg: Boolean): Painter =
     painterResource(inKey, if (inSvg) ResourceKind.Svg else ResourceKind.Raster)
 
-actual fun wrappedRowCount(inText: String, inFontPx: Int, inMaxWidthPx: Int, inFamilyName: String?): Int =
-    currentTextMeasurer.wrap(inText, inFontPx, inMaxWidthPx, inFamilyName).lines.size
+// Cached resolver for wrappedRowCount — the skiko engine resolves fonts by name
+// (projectFontName), so this is just the required non-null Paragraph argument.
+private val mRowCountFontResolver = createFontFamilyResolver()
+
+actual fun wrappedRowCount(inText: String, inFontPx: Int, inMaxWidthPx: Int, inFamilyName: String?): Int {
+    if (inText.isEmpty()) return 1
+    // inFontPx is already physical pixels, so measure at density 1 (fontSize.value
+    // * density = inFontPx) and wrap at inMaxWidthPx px by building a Paragraph.
+    // lineCount comes from skiko's paragraph layout.
+    val vStyle = TextStyle(
+        fontSize = inFontPx.sp,
+        fontFamily = inFamilyName?.let { namedFontFamily(it) },
+    )
+    return Paragraph(
+        text = inText,
+        style = vStyle,
+        constraints = Constraints(maxWidth = inMaxWidthPx.coerceAtLeast(0)),
+        density = Density(1f),
+        fontFamilyResolver = mRowCountFontResolver,
+        spanStyles = emptyList(),
+        placeholders = emptyList(),
+        maxLines = Int.MAX_VALUE,
+        ellipsis = false,
+    ).lineCount
+}
 
 actual var editorTabWidth: Int
     get() = TextLayoutConfig.tabWidth

build.gradle.kts

@@ -12,14 +12,49 @@ plugins {
 apiValidation {
     @OptIn(ExperimentalBCVApi::class)
     klib { enabled = true }
-    ignoredProjects.addAll(listOf("demo", "apidemo"))
+    // demo/apidemo: apps, no published API. sdl-core: naked SDL cinterop — its
+    // "API" is the generated sdl3.* bindings (per-OS, can't infer macos), not our
+    // surface. material-symbols: auto-generated icon codepoint maps + its jvm
+    // dump trips BCV's ASM on newer JDKs (class file major 69). Track the
+    // hand-authored Compose surface, not generated/binding code.
+    ignoredProjects.addAll(listOf("demo", "apidemo", "sdl-core", "material-symbols"))
 }
 
 // Version is driven by PUBLISH_VERSION (set from the git tag in the publish
 // workflow, `v1.2.3` → `1.2.3`). Local dev / demo runs default to SNAPSHOT.
 val vPublishVersion = (System.getenv("PUBLISH_VERSION") ?: "0.0.0-SNAPSHOT").removePrefix("v")
+
+// Published groups mirror the org.jetbrains.compose.<area> originals under the
+// com.bitsycore fork name, so each module is the obvious 1:1 fork of its upstream
+// coord (e.g. org.jetbrains.compose.ui:ui → com.bitsycore.compose.ui:ui). Modules
+// with no upstream area (project-only: :sdl-core, :material-symbols) fall through
+// to the default com.bitsycore.compose.sdl group; :desktop-native-window is the
+// headline app-shell artifact, published under com.bitsycore.compose.
+val kDefaultGroup = "com.bitsycore.compose.sdl"
+val kAreaGroups = mapOf(
+    ":ui" to "com.bitsycore.compose.ui",
+    ":ui-graphics" to "com.bitsycore.compose.ui",
+    ":ui-text" to "com.bitsycore.compose.ui",
+    ":ui-unit" to "com.bitsycore.compose.ui",
+    ":ui-geometry" to "com.bitsycore.compose.ui",
+    ":ui-util" to "com.bitsycore.compose.ui",
+    ":ui-backhandler" to "com.bitsycore.compose.ui",
+    ":ui-tooling-preview" to "com.bitsycore.compose.ui",
+    ":foundation" to "com.bitsycore.compose.foundation",
+    ":foundation-layout" to "com.bitsycore.compose.foundation",
+    ":animation" to "com.bitsycore.compose.animation",
+    ":animation-core" to "com.bitsycore.compose.animation",
+    ":animation-graphics" to "com.bitsycore.compose.animation",
+    ":material3" to "com.bitsycore.compose.material3",
+    ":material-ripple" to "com.bitsycore.compose.material",
+    ":components-resources" to "com.bitsycore.compose.components",
+    ":navigation3-ui" to "com.bitsycore.navigation3",
+    ":desktop-native-window" to "com.bitsycore.compose",
+)
+fun groupFor(path: String): String = kAreaGroups[path] ?: kDefaultGroup
+
 allprojects {
-    group = "com.bitsycore.compose.sdl"
+    group = groupFor(path)
     version = vPublishVersion
 }
 
@@ -37,12 +72,13 @@ allprojects {
 
 val kAppModules = setOf(":demo", ":apidemo")
 val kPublishedLibs = setOf(
-    ":ui", ":ui-util", ":ui-geometry", ":ui-unit", ":ui-backhandler",
-    ":ui-tooling-preview",
+    ":sdl-core",
+    ":ui", ":ui-util", ":ui-geometry", ":ui-graphics", ":ui-text",
+    ":ui-unit", ":ui-backhandler", ":ui-tooling-preview",
     ":animation-core", ":animation", ":animation-graphics",
     ":foundation", ":foundation-layout",
     ":material3", ":material-ripple",
-    ":window", ":material-symbols",
+    ":desktop-native-window", ":material-symbols",
     ":navigation3-ui", ":components-resources",
 )
 
@@ -76,7 +112,7 @@ subprojects {
                 kPublishedLibs.forEach { modulePath ->
                     val vArtifactId = modulePath.removePrefix(":")
                     substitute(project(modulePath))
-                        .using(module("com.bitsycore.compose.sdl:$vArtifactId:$kConsumeVersion"))
+                        .using(module("${groupFor(modulePath)}:$vArtifactId:$kConsumeVersion"))
                         .because("-PuseGithubPackages=true")
                 }
             }
@@ -105,6 +141,14 @@ subprojects {
                         password = System.getenv("GITHUB_TOKEN")
                     }
                 }
+                maven {
+                    name = "Bitsycore"
+                    url = uri("https://maven.bitsycore.com/releases")
+                    credentials {
+                        username = System.getenv("BITSYCORE_MAVEN_USER")
+                        password = System.getenv("BITSYCORE_MAVEN_TOKEN")
+                    }
+                }
             }
             publications.withType<MavenPublication>().configureEach {
                 pom {
@@ -135,10 +179,11 @@ allprojects {
         if (vNativeTargetTokens.any { name.contains(it, ignoreCase = true) }) {
             resolutionStrategy.dependencySubstitution {
                 substitute(module("org.jetbrains.compose.ui:ui")).using(project(":ui"))
-                // ui's split artifacts: ui-graphics + ui-text are merged INTO
-                // :ui in the port; ui-unit / ui-geometry have their own modules.
-                substitute(module("org.jetbrains.compose.ui:ui-graphics")).using(project(":ui"))
-                substitute(module("org.jetbrains.compose.ui:ui-text")).using(project(":ui"))
+                // ui-graphics / ui-text are their own modules (split out of :ui,
+                // upstream layout). Declare each DIRECTLY so the app commonMain sees
+                // them under the granular-metadata visibility rule.
+                substitute(module("org.jetbrains.compose.ui:ui-graphics")).using(project(":ui-graphics"))
+                substitute(module("org.jetbrains.compose.ui:ui-text")).using(project(":ui-text"))
                 substitute(module("org.jetbrains.compose.ui:ui-unit")).using(project(":ui-unit"))
                 substitute(module("org.jetbrains.compose.ui:ui-geometry")).using(project(":ui-geometry"))
                 substitute(module("org.jetbrains.compose.ui:ui-util")).using(project(":ui-util"))

buildSrc/src/main/kotlin/com/bitsycore/compose/sdl/build/ComposeFontBundling.kt

@@ -49,9 +49,11 @@ class ComposeFontBundlingConfig {
 	var bundleMaterialSymbols: Boolean = false
 
 	/**
-	 * hb-subset each bundled Material Symbols font to the glyphs the sources reference
-	 * (scripts/subset-material-symbols.py + hb-subset; full font when hb-subset is
-	 * absent). Needs [bundleMaterialSymbols]; still gated by -PsubsetIcons.
+	 * Subset each bundled Material Symbols font to the glyphs the sources reference
+	 * (scripts/subset-material-symbols.py picks the codepoints; the subset task uses
+	 * hb-subset when present, else fontTools via Python — auto-installed — and only
+	 * bundles the full font if neither is available). Needs [bundleMaterialSymbols];
+	 * still gated by -PsubsetIcons.
 	 */
 	var enableIconSubsetting: Boolean = false
 }
@@ -247,8 +249,10 @@ private fun Project.registerIconSubsetPipeline(inUsedStyles: List<String>): Map<
 }
 
 /**
- * hb-subset inStyle's downloaded TTF to the codepoints in usage-codepoint.txt, into this
- * app's build/icons/. Bundles the full font instead when hb-subset is not on PATH.
+ * Subset inStyle's downloaded TTF to the codepoints in usage-codepoint.txt, into this
+ * app's build/icons/. Prefers hb-subset (harfbuzz); falls back to fontTools via Python
+ * (variable-font-aware, auto-installed via pip) when hb-subset is absent; bundles the
+ * full font only if neither subsetter is available.
  */
 private fun Project.registerSubsetTask(
 	inStyle: String,
@@ -279,30 +283,67 @@ private fun Project.registerSubsetTask(
 			vOut.parentFile.mkdirs()
 			val vInputFile = vInputProvider.get().asFile
 			val vBefore = vInputFile.length()
-			// ProcessBuilder: project.exec isn't usable inside doLast on Gradle 9.
-			// hb-subset is optional : without it, bundle the full font.
-			val vProc = try {
-				ProcessBuilder(
-					"hb-subset",
-					vInputFile.absolutePath,
-					"-o", vOut.absolutePath,
-					"--unicodes=$vUnicodes",
-				).redirectErrorStream(true).start()
-			} catch (_: java.io.IOException) {
-				vInputFile.copyTo(vOut, overwrite = true)
-				logger.warn(
-					"[subset $inStyle] hb-subset not found on PATH : bundling the full font " +
-							"(${vBefore / 1024}KB). Install harfbuzz to shrink it (brew install harfbuzz / " +
-							"pacman -S mingw-w64-x86_64-harfbuzz / apt install harfbuzz-utils)."
+			// project.exec isn't usable inside doLast on Gradle 9, so shell out via
+			// ProcessBuilder. Returns (exitedZero, combinedOutput); a missing binary
+			// (IOException) yields (false, message) so callers can fall through.
+			fun runCmd(vararg inCmd: String): Pair<Boolean, String> =
+				try {
+					val vProc = ProcessBuilder(*inCmd).redirectErrorStream(true).start()
+					val vText = vProc.inputStream.bufferedReader().readText()
+					(vProc.waitFor() == 0) to vText
+				} catch (e: java.io.IOException) {
+					false to (e.message ?: "not found")
+				}
+
+			fun logShrink(inTool: String) {
+				val vAfter = vOut.length()
+				val vPct = if (vBefore == 0L) 0 else (100 - 100 * vAfter / vBefore).coerceAtLeast(0)
+				logger.lifecycle(
+					"[subset $inStyle] ${vBefore / 1024}KB → ${vAfter / 1024}KB (-$vPct%) · " +
+							"${vCodepoints.size} glyphs kept [$inTool]"
 				)
-				return@doLast
 			}
-			val vOutput = vProc.inputStream.bufferedReader().readText()
-			val vCode = vProc.waitFor()
-			if (vCode != 0) throw GradleException("hb-subset failed (exit $vCode):\n$vOutput")
-			val vAfter = vOut.length()
-			val vPct = if (vBefore == 0L) 0 else ((100 - 100 * vAfter / vBefore)).coerceAtLeast(0)
-			logger.lifecycle("[subset $inStyle] ${vBefore / 1024}KB → ${vAfter / 1024}KB (-$vPct%) · ${vCodepoints.size} glyphs kept")
+
+			// 1. hb-subset (harfbuzz) — fastest path when it is on PATH.
+			if (runCmd("hb-subset", vInputFile.absolutePath, "-o", vOut.absolutePath, "--unicodes=$vUnicodes").first
+				&& vOut.length() > 0L
+			) {
+				logShrink("hb-subset"); return@doLast
+			}
+
+			// 2. fontTools (pyftsubset) via Python — the portable fallback. Python is
+			//    already a build prerequisite (SDL build + vendor sync) and fontTools is
+			//    variable-font-aware, so the FILL/wght/GRAD/opsz axes survive. It is
+			//    auto-installed if missing, so no manual harfbuzz install is ever required.
+			val vPython = listOf("python3", "python", "py").firstOrNull { runCmd(it, "--version").first }
+			if (vPython != null) {
+				if (!runCmd(vPython, "-c", "import fontTools").first) {
+					logger.lifecycle("[subset $inStyle] fontTools not present — installing it via pip…")
+					// --user (no root) → --break-system-packages (PEP 668) → plain.
+					listOf(listOf("--user"), listOf("--break-system-packages"), emptyList<String>())
+						.firstOrNull { vExtra ->
+							runCmd(
+								vPython, "-m", "pip", "install", "-q", "--disable-pip-version-check",
+								*vExtra.toTypedArray(), "fonttools"
+							).first
+						}
+				}
+				val (vFtOk, vFtOut) = runCmd(
+					vPython, "-m", "fontTools.subset", vInputFile.absolutePath,
+					"--unicodes=$vUnicodes", "--output-file=${vOut.absolutePath}"
+				)
+				if (vFtOk && vOut.length() > 0L) { logShrink("fontTools"); return@doLast }
+				logger.warn("[subset $inStyle] fontTools subset failed :\n$vFtOut")
+			}
+
+			// 3. Last resort : the full font — correct, just larger.
+			vInputFile.copyTo(vOut, overwrite = true)
+			logger.warn(
+				"[subset $inStyle] no working subsetter found (hb-subset or python3+fontTools) : " +
+						"bundling the full font (${vBefore / 1024}KB). Install harfbuzz " +
+						"(brew install harfbuzz / apt install harfbuzz-utils / " +
+						"pacman -S mingw-w64-x86_64-harfbuzz) or put python3 on PATH."
+			)
 		}
 	}
 }

components/resources/library/api/components-resources.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:components-resources>
+// Library unique name: <com.bitsycore.compose.components:components-resources>
 open annotation class org.jetbrains.compose.resources/ExperimentalResourceApi : kotlin/Annotation { // org.jetbrains.compose.resources/ExperimentalResourceApi|null[0]
     constructor <init>() // org.jetbrains.compose.resources/ExperimentalResourceApi.<init>|<init>(){}[0]
 }

components/resources/library/build.gradle.kts

@@ -40,11 +40,11 @@ kotlin {
 		}
 		nativeMain {
 			kotlin.srcDir("src/vendor/native/kotlin")
-			// The Font / Image resource actuals — pure project code that delegates
-			// to :ui's IconFont / NamedFont / decodeEncodedImageBitmap (the Skia
-			// decoder). Renderer-agnostic and skiko-free, so a single native set
-			// covers every target. (Dir name is historical — .sdl.kt.)
-			kotlin.srcDir("src/sdlRendererMain/kotlin")
+			// src/nativeMain/kotlin also holds the Font / Image resource actuals —
+			// pure project code that delegates to the project font registry
+			// (IconFont / NamedFont) and the :ui-graphics Skia decoder
+			// (decodeEncodedImageBitmap). Skiko-free, so a single native set covers
+			// every target.
 		}
 	}
 

components/resources/library/compose-fork.txt

@@ -4,11 +4,10 @@
 # mingwX64/linux variants, so the runtime library is vendored and the platform
 # actuals are project code:
 #   src/nativeMain      — ResourceReader (data.kres), getSystemEnvironment (SDL),
-#                         pure-Kotlin DomXmlParser (upstream's is Darwin NSXMLParser)
-#   src/sdlRendererMain — the Font/Image resource actuals: renderer-agnostic
-#                         project code (image decode via :ui's Skia decoder, Font
-#                         via the project font registry). Dir name is historical;
-#                         the build attaches it to nativeMain.
+#                         pure-Kotlin DomXmlParser (upstream's is Darwin NSXMLParser),
+#                         and the Font/Image resource actuals: renderer-agnostic
+#                         project code (image decode via the :ui-graphics Skia
+#                         decoder, Font via the project font registry)
 # Re-sync: python scripts/compose-fork/sync.py components/resources/library
 
 SET_REPO=https://github.com/JetBrains/compose-multiplatform@<COMPOSE_REF>
@@ -55,9 +54,9 @@ skikoMain/kotlin/org/jetbrains/compose/resources/ResourceReader.skiko.kt -> src/
 
 # Skia-bound pieces — upstream's skikoMain actuals rely on Compose-Desktop Skia
 # extensions (SystemFont / toComposeImageBitmap / nativeCanvas) this port's :ui
-# doesn't expose. The module's own Font/Image actuals (src/sdlRendererMain/kotlin/,
-# attached to nativeMain) use pure project APIs (IconFont / NamedFont /
-# decodeEncodedImageBitmap) instead, so opt the upstream Skia-bound files out.
+# doesn't expose. The module's own Font/Image actuals (src/nativeMain/kotlin/)
+# use pure project APIs (IconFont / NamedFont / decodeEncodedImageBitmap)
+# instead, so opt the upstream Skia-bound files out.
 !skikoMain/kotlin/org/jetbrains/compose/resources/ImageResources.skiko.kt
 !skikoMain/kotlin/org/jetbrains/compose/resources/FontResources.skiko.kt
 !skikoMain/kotlin/org/jetbrains/compose/resources/SvgPainter.kt

components/resources/library/src/nativeMain/kotlin/org/jetbrains/compose/resources/FontResources.native.kt

@@ -15,16 +15,16 @@ import com.compose.sdl.icons.IconFont
 import com.compose.sdl.text.NamedFont
 
 // ==================
-// MARK: Font actuals — SDL renderer
+// MARK: Font actuals — Skia text stack via the project font registry
 // ==================
 
-/** The SDL text stack resolves fonts by FAMILY NAME through the project font
+/** The Skia text stack resolves fonts by FAMILY NAME through the project font
    registry (IconFont.registerIcon — the general byte-font table, not just
    icons). A font resource therefore loads its bytes through the resource
    reader, registers them under a per-resource family name, and returns a
    [NamedFont] — `FontFamily(Font(Res.font.x))` then renders through the
    standard project pipeline. Weight/style are carried on the NamedFont;
-   variation axes apply at draw time via the renderer's axis support. */
+   variation axes apply at draw time via Skia's axis support. */
 
 private val emptyFont: Font = NamedFont("res-font:<loading>")
 

components/resources/library/src/nativeMain/kotlin/org/jetbrains/compose/resources/ImageResources.native.kt

@@ -0,0 +1,80 @@
+@file:OptIn(InternalResourceApi::class, ExperimentalResourceApi::class)
+
+package org.jetbrains.compose.resources
+
+import org.jetbrains.compose.resources.InternalResourceApi
+import org.jetbrains.compose.resources.ExperimentalResourceApi
+
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.ColorFilter
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.drawscope.DrawScope
+import androidx.compose.ui.graphics.painter.Painter
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.IntSize
+import com.compose.sdl.graphics.decodeEncodedImageBitmap
+import com.compose.sdl.graphics.decodeSvgAt
+import com.compose.sdl.graphics.svgIntrinsicSize
+import kotlin.math.roundToInt
+
+// ==================
+// MARK: Image actuals — Skia decode via the :ui-graphics hook
+// ==================
+
+/** Decoding goes through the :ui-graphics Skia hook the SDL backend registers
+   at init (decodeEncodedImageBitmap). resourceDensity/targetDensity are ignored:
+   under this port's Option-B density flow layout runs in physical pixels and
+   drawables ship at a single density, so no decode-time rescale applies. */
+internal actual fun ByteArray.toImageBitmap(resourceDensity: Int, targetDensity: Int): ImageBitmap =
+	decodeEncodedImageBitmap(this)
+		?: error("Image decode failed — is the render backend initialised before painterResource ran?")
+
+/** SVG element = the raw document bytes; rendering is size-driven (see SvgPainter). */
+internal actual class SvgElement(val bytes: ByteArray)
+
+internal actual fun ByteArray.toSvgElement(): SvgElement = SvgElement(this)
+
+/** Resolution-independent SVG painter: reports the document's intrinsic size for
+   layout, but RE-RASTERISES the vector at the actual draw size each time the draw
+   size changes (1-entry size cache), so a scaled-up SVG stays crisp instead of
+   upscaling one intrinsic-size bitmap. Mirrors upstream desktop's SVGPainter. */
+internal actual fun SvgElement.toSvgPainter(density: Density): Painter = SvgPainter(bytes)
+
+private class SvgPainter(private val bytes: ByteArray) : Painter() {
+
+	override val intrinsicSize: Size = svgIntrinsicSize(bytes) ?: Size.Unspecified
+
+	private var fAlpha: Float = 1f
+	private var fColorFilter: ColorFilter? = null
+	private var fCacheKey: Long = -1L
+	private var fCacheBitmap: ImageBitmap? = null
+
+	override fun applyAlpha(alpha: Float): Boolean { fAlpha = alpha; return true }
+	override fun applyColorFilter(colorFilter: ColorFilter?): Boolean { fColorFilter = colorFilter; return true }
+
+	private fun rasterFor(inWidthPx: Int, inHeightPx: Int): ImageBitmap? {
+		val vKey = (inWidthPx.toLong() shl 32) or inHeightPx.toLong()
+		if (vKey == fCacheKey && fCacheBitmap != null) return fCacheBitmap
+		val vBitmap = decodeSvgAt(bytes, inWidthPx, inHeightPx) ?: return null
+		fCacheKey = vKey
+		fCacheBitmap = vBitmap
+		return vBitmap
+	}
+
+	override fun DrawScope.onDraw() {
+		val vWpx = size.width.roundToInt()
+		val vHpx = size.height.roundToInt()
+		if (vWpx <= 0 || vHpx <= 0) return
+		val vBitmap = rasterFor(vWpx, vHpx) ?: return
+		drawImage(
+			vBitmap,
+			srcOffset = IntOffset.Zero,
+			srcSize = IntSize(vBitmap.width, vBitmap.height),
+			dstOffset = IntOffset.Zero,
+			dstSize = IntSize(vWpx, vHpx),
+			alpha = fAlpha,
+			colorFilter = fColorFilter,
+		)
+	}
+}

components/resources/library/src/nativeMain/kotlin/org/jetbrains/compose/resources/ResourceEnvironment.native.kt

@@ -4,46 +4,24 @@ package org.jetbrains.compose.resources
 
 import org.jetbrains.compose.resources.InternalResourceApi
 import org.jetbrains.compose.resources.ExperimentalResourceApi
-
-import kotlinx.cinterop.alloc
-import kotlinx.cinterop.get
-import kotlinx.cinterop.memScoped
-import kotlinx.cinterop.pointed
-import kotlinx.cinterop.ptr
-import kotlinx.cinterop.toKString
-import kotlinx.cinterop.IntVar
-import kotlinx.cinterop.value
-import sdl3.SDL_GetPreferredLocales
-import sdl3.SDL_GetSystemTheme
-import sdl3.SDL_SystemTheme
-import sdl3.SDL_free
+import com.compose.sdl.res.preferredLocaleProvider
+import com.compose.sdl.res.systemThemeIsDarkProvider
 
 // ==================
-// MARK: ResourceEnvironment — SDL actual
+// MARK: ResourceEnvironment — platform-env-seam actual
 // ==================
 
 /** Non-composable system environment for qualifier resolution (values-fr,
-   drawable-dark, …): locale from SDL_GetPreferredLocales, theme from
-   SDL_GetSystemTheme. Density is reported as 1f — under this port's Option-B
-   density flow layout runs in physical pixels and drawables are bundled at a
-   single density, so the mdpi bucket is always the right one. The COMPOSABLE
-   path (rememberResourceEnvironment) doesn't use this: it reads
-   LocalDensity / isSystemInDarkTheme from the composition. */
-@OptIn(kotlinx.cinterop.ExperimentalForeignApi::class)
+   drawable-dark, …): locale + theme come from the platform-env seams installed
+   by the SDL layer, so :components-resources carries no dependency on the sdl3
+   cinterop. Density is reported as 1f — under this port's Option-B density flow
+   layout runs in physical pixels and drawables are bundled at a single density,
+   so the mdpi bucket is always the right one. The COMPOSABLE path
+   (rememberResourceEnvironment) doesn't use this: it reads LocalDensity /
+   isSystemInDarkTheme from the composition. */
 internal actual fun getSystemEnvironment(): ResourceEnvironment {
-	var vLanguage = ""
-	var vRegion = ""
-	memScoped {
-		val vCount = alloc<IntVar>()
-		val vLocales = SDL_GetPreferredLocales(vCount.ptr)
-		if (vLocales != null && vCount.value > 0) {
-			val vFirst = vLocales[0]?.pointed
-			vLanguage = vFirst?.language?.toKString() ?: ""
-			vRegion = vFirst?.country?.toKString() ?: ""
-			SDL_free(vLocales)
-		}
-	}
-	val vDark = SDL_GetSystemTheme() == SDL_SystemTheme.SDL_SYSTEM_THEME_DARK
+	val (vLanguage, vRegion) = preferredLocaleProvider?.invoke() ?: ("" to "")
+	val vDark = systemThemeIsDarkProvider?.invoke() ?: false
 	return ResourceEnvironment(
 		language = LanguageQualifier(vLanguage),
 		// SDL locales carry language+country only — no script subtag.

components/resources/library/src/sdlRendererMain/kotlin/org/jetbrains/compose/resources/ImageResources.sdl.kt

@@ -1,38 +0,0 @@
-@file:OptIn(InternalResourceApi::class, ExperimentalResourceApi::class)
-
-package org.jetbrains.compose.resources
-
-import org.jetbrains.compose.resources.InternalResourceApi
-import org.jetbrains.compose.resources.ExperimentalResourceApi
-
-import androidx.compose.ui.graphics.ImageBitmap
-import androidx.compose.ui.graphics.painter.BitmapPainter
-import androidx.compose.ui.graphics.painter.Painter
-import androidx.compose.ui.unit.Density
-import com.compose.sdl.graphics.decodeEncodedImageBitmap
-
-// ==================
-// MARK: Image actuals — SDL renderer
-// ==================
-
-/** Decoding goes through the :ui hook the SDL backend registers at init
-   (SDL3_image, IMG auto-detect). resourceDensity/targetDensity are ignored:
-   under this port's Option-B density flow layout runs in physical pixels and
-   drawables ship at a single density, so no decode-time rescale applies. */
-internal actual fun ByteArray.toImageBitmap(resourceDensity: Int, targetDensity: Int): ImageBitmap =
-	decodeEncodedImageBitmap(this)
-		?: error("Image decode failed — is the render backend initialised before painterResource ran?")
-
-/** SVG on SDL: SDL3_image rasterises SVG at its intrinsic size (IMG_LoadSVG),
-   so the "element" is just the raw bytes and the painter is the rasterised
-   bitmap. No DOM, no vector scaling — prefer XML vector drawables for
-   resolution-independent art on this renderer. */
-internal actual class SvgElement(val bytes: ByteArray)
-
-internal actual fun ByteArray.toSvgElement(): SvgElement = SvgElement(this)
-
-internal actual fun SvgElement.toSvgPainter(density: Density): Painter =
-	BitmapPainter(
-		decodeEncodedImageBitmap(bytes)
-			?: error("SVG rasterisation failed — is the render backend initialised before painterResource ran?")
-	)

compose/animation/animation-core/api/animation-core.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:animation-core>
+// Library unique name: <com.bitsycore.compose.animation:animation-core>
 open annotation class androidx.compose.animation.core/ExperimentalAnimationSpecApi : kotlin/Annotation { // androidx.compose.animation.core/ExperimentalAnimationSpecApi|null[0]
     constructor <init>() // androidx.compose.animation.core/ExperimentalAnimationSpecApi.<init>|<init>(){}[0]
 }

compose/animation/animation-core/build.gradle.kts

@@ -2,7 +2,7 @@ import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
 
 // :animation-core — androidx.compose.animation.core.* vendored VERBATIM from
 // upstream. Renderer-agnostic (spring/tween specs, animatable, transition,
-// vector math). Split out of :core so :core stays about renderer+ui glue only.
+// vector math). Split out of :ui so :ui stays about renderer+ui glue only.
 //
 // Provenance = animation-core/compose-fork.txt + scripts/compose-fork/compose.properties.
 // Never hand-edit files under animation-core/src/vendor/ — change the manifest and
@@ -16,8 +16,7 @@ plugins {
     alias(libs.plugins.compose.multiplatform)
 }
 
-// Skip mingwX64 on non-Windows hosts; see root build.gradle.kts.
-val vHostSupportsMingw: Boolean by rootProject.extra
+val vHostSupportsMingw = rootProject.extra["vHostSupportsMingw"] as Boolean
 
 kotlin {
     linuxArm64()

compose/animation/animation-graphics/api/animation-graphics.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:animation-graphics>
+// Library unique name: <com.bitsycore.compose.animation:animation-graphics>
 open annotation class androidx.compose.animation.graphics/ExperimentalAnimationGraphicsApi : kotlin/Annotation { // androidx.compose.animation.graphics/ExperimentalAnimationGraphicsApi|null[0]
     constructor <init>() // androidx.compose.animation.graphics/ExperimentalAnimationGraphicsApi.<init>|<init>(){}[0]
 }

compose/animation/animation-graphics/build.gradle.kts

@@ -13,8 +13,7 @@ plugins {
 	alias(libs.plugins.kotlin.plugin.compose)
 }
 
-// Skip mingwX64 on non-Windows hosts; see root build.gradle.kts.
-val vHostSupportsMingw: Boolean by rootProject.extra
+val vHostSupportsMingw = rootProject.extra["vHostSupportsMingw"] as Boolean
 
 kotlin {
 	linuxArm64()

compose/animation/animation/api/animation.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:animation>
+// Library unique name: <com.bitsycore.compose.animation:animation>
 open annotation class androidx.compose.animation/ExperimentalAnimationApi : kotlin/Annotation { // androidx.compose.animation/ExperimentalAnimationApi|null[0]
     constructor <init>() // androidx.compose.animation/ExperimentalAnimationApi.<init>|<init>(){}[0]
 }

compose/animation/animation/build.gradle.kts

@@ -13,8 +13,7 @@ plugins {
 	alias(libs.plugins.kotlin.plugin.compose)
 }
 
-// Skip mingwX64 on non-Windows hosts; see root build.gradle.kts.
-val vHostSupportsMingw: Boolean by rootProject.extra
+val vHostSupportsMingw = rootProject.extra["vHostSupportsMingw"] as Boolean
 
 kotlin {
 	linuxArm64()

compose/desktop/native/window/api/desktop-native-window.klib.api

@@ -0,0 +1,35 @@
+// Klib ABI Dump
+// Targets: [linuxArm64, linuxX64, macosArm64, mingwX64]
+// Rendering settings:
+// - Signature version: 2
+// - Show manifest properties: true
+// - Show declarations: true
+
+// Library unique name: <com.bitsycore.compose:desktop-native-window>
+abstract interface com.compose.sdl/ApplicationScope { // com.compose.sdl/ApplicationScope|null[0]
+    abstract fun exitApplication() // com.compose.sdl/ApplicationScope.exitApplication|exitApplication(){}[0]
+}
+
+final class com.compose.sdl/AppWindowIcon { // com.compose.sdl/AppWindowIcon|null[0]
+    constructor <init>(kotlin.collections/List<kotlin/String>, kotlin.collections/List<kotlin/String> = ...) // com.compose.sdl/AppWindowIcon.<init>|<init>(kotlin.collections.List<kotlin.String>;kotlin.collections.List<kotlin.String>){}[0]
+
+    final val dark // com.compose.sdl/AppWindowIcon.dark|{}dark[0]
+        final fun <get-dark>(): kotlin.collections/List<kotlin/String> // com.compose.sdl/AppWindowIcon.dark.<get-dark>|<get-dark>(){}[0]
+    final val light // com.compose.sdl/AppWindowIcon.light|{}light[0]
+        final fun <get-light>(): kotlin.collections/List<kotlin/String> // com.compose.sdl/AppWindowIcon.light.<get-light>|<get-light>(){}[0]
+}
+
+final val com.compose.sdl/com_compose_sdl_AppWindowIcon$stableprop // com.compose.sdl/com_compose_sdl_AppWindowIcon$stableprop|#static{}com_compose_sdl_AppWindowIcon$stableprop[0]
+
+final var com.compose.sdl/disableInfiniteAnimations // com.compose.sdl/disableInfiniteAnimations|{}disableInfiniteAnimations[0]
+    final fun <get-disableInfiniteAnimations>(): kotlin/Boolean // com.compose.sdl/disableInfiniteAnimations.<get-disableInfiniteAnimations>|<get-disableInfiniteAnimations>(){}[0]
+    final fun <set-disableInfiniteAnimations>(kotlin/Boolean) // com.compose.sdl/disableInfiniteAnimations.<set-disableInfiniteAnimations>|<set-disableInfiniteAnimations>(kotlin.Boolean){}[0]
+final var com.compose.sdl/useVirtualFrameTime // com.compose.sdl/useVirtualFrameTime|{}useVirtualFrameTime[0]
+    final fun <get-useVirtualFrameTime>(): kotlin/Boolean // com.compose.sdl/useVirtualFrameTime.<get-useVirtualFrameTime>|<get-useVirtualFrameTime>(){}[0]
+    final fun <set-useVirtualFrameTime>(kotlin/Boolean) // com.compose.sdl/useVirtualFrameTime.<set-useVirtualFrameTime>|<set-useVirtualFrameTime>(kotlin.Boolean){}[0]
+
+final fun (com.compose.sdl/ApplicationScope).com.compose.sdl/Window(kotlin/Function0<kotlin/Unit>, kotlin/String?, kotlin/Int, kotlin/Int, com.compose.sdl/GpuMode?, com.compose.sdl/AppWindowIcon?, kotlin/Function2<com.compose.sdl/RenderBackend, kotlin/Int, kotlin/Boolean>?, kotlin/Function3<com.compose.sdl/ComposeWindowScope, androidx.compose.runtime/Composer, kotlin/Int, kotlin/Unit>, androidx.compose.runtime/Composer?, kotlin/Int, kotlin/Int) // com.compose.sdl/Window|Window@com.compose.sdl.ApplicationScope(kotlin.Function0<kotlin.Unit>;kotlin.String?;kotlin.Int;kotlin.Int;com.compose.sdl.GpuMode?;com.compose.sdl.AppWindowIcon?;kotlin.Function2<com.compose.sdl.RenderBackend,kotlin.Int,kotlin.Boolean>?;kotlin.Function3<com.compose.sdl.ComposeWindowScope,androidx.compose.runtime.Composer,kotlin.Int,kotlin.Unit>;androidx.compose.runtime.Composer?;kotlin.Int;kotlin.Int){}[0]
+final fun com.compose.sdl/com_compose_sdl_AppWindowIcon$stableprop_getter(): kotlin/Int // com.compose.sdl/com_compose_sdl_AppWindowIcon$stableprop_getter|com_compose_sdl_AppWindowIcon$stableprop_getter(){}[0]
+final fun com.compose.sdl/nativeComposeApp(kotlin/Function3<com.compose.sdl/ApplicationScope, androidx.compose.runtime/Composer, kotlin/Int, kotlin/Unit>) // com.compose.sdl/nativeComposeApp|nativeComposeApp(kotlin.Function3<com.compose.sdl.ApplicationScope,androidx.compose.runtime.Composer,kotlin.Int,kotlin.Unit>){}[0]
+final fun com.compose.sdl/nativeComposeWindow(kotlin/String = ..., kotlin/Int = ..., kotlin/Int = ..., com.compose.sdl/GpuMode = ..., com.compose.sdl/AppWindowIcon? = ..., kotlin/Function2<com.compose.sdl/RenderBackend, kotlin/Int, kotlin/Boolean>? = ..., kotlin/Function3<com.compose.sdl/ComposeWindowScope, androidx.compose.runtime/Composer, kotlin/Int, kotlin/Unit>) // com.compose.sdl/nativeComposeWindow|nativeComposeWindow(kotlin.String;kotlin.Int;kotlin.Int;com.compose.sdl.GpuMode;com.compose.sdl.AppWindowIcon?;kotlin.Function2<com.compose.sdl.RenderBackend,kotlin.Int,kotlin.Boolean>?;kotlin.Function3<com.compose.sdl.ComposeWindowScope,androidx.compose.runtime.Composer,kotlin.Int,kotlin.Unit>){}[0]
+final fun com.compose.sdl/windowHasInvalidations(): kotlin/Boolean // com.compose.sdl/windowHasInvalidations|windowHasInvalidations(){}[0]

compose/desktop/native/window/build.gradle.kts

@@ -1,8 +1,8 @@
-// :window — the module apps depend on. Owns nativeComposeWindow() (main loop,
+// :desktop-native-window — the module apps depend on. Owns nativeComposeWindow() (main loop,
 // recomposer lifecycle, event dispatch, Snapshot apply notifications).
-// Renderer selection happens entirely inside :core via source-set wiring
-// (skikoRendererMain vs sdlRendererMain) — this module just calls
-// `createRenderBackend(...)` and `rendererPreferredGpuMode()` from :core and
+// Renderer selection happens entirely inside :ui via source-set wiring
+// (skikoRendererMain — Skia-only) — this module just calls
+// `createRenderBackend(...)` and `rendererPreferredGpuMode()` from :ui and
 // the right symbol resolves per target.
 // Publication artifactId (when set up): compose-desktop-native.
 
@@ -23,15 +23,15 @@ kotlin {
 
     applyDefaultHierarchyTemplate()
 
-    // sdl3.* types are api-exposed via :ui's cinterop klib — no separate
-    // sdl3 cinterop here.
+    // sdl3.* types are api-exposed via :ui → :sdl-core's cinterop klib — no
+    // separate sdl3 cinterop here.
 
     sourceSets {
         commonMain.dependencies {
-            // api so apps depending on :window also get the compose re-impl,
-            // Res/resources, GpuMode, and the renderer pipeline from :core, plus
+            // api so apps depending on :desktop-native-window also get the compose re-impl,
+            // Res/resources, GpuMode, and the renderer pipeline from :ui, plus
             // the foundation / animation-core / animation modules that were split
-            // out of :core (upstream Compose layout).
+            // out of :ui (upstream Compose layout).
             // Material widgets used to be re-exported from :material here; the
             // module was retired when :apidemo and :demo migrated to :material3.
             // Apps that want Material 3 widgets pull `implementation(project(":material3"))`

compose/desktop/native/window/src/nativeMain/kotlin/com/compose/sdl/ComposeWindow.kt

@@ -22,7 +22,6 @@ import androidx.compose.ui.input.key.key
 import androidx.compose.ui.input.key.type
 import androidx.compose.ui.input.pointer.PointerButton
 import androidx.compose.ui.input.pointer.PointerEventType
-import androidx.lifecycle.enableSavedStateHandles
 import com.compose.sdl.node.ComposeRootHost
 import com.compose.sdl.res.currentImageLoader
 import com.compose.sdl.window.LocalPopupHost
@@ -35,7 +34,11 @@ import kotlinx.cinterop.toKString
 import kotlinx.cinterop.reinterpret
 import kotlinx.cinterop.alloc
 import kotlinx.cinterop.ptr
+import kotlinx.cinterop.COpaquePointer
+import kotlinx.cinterop.pointed
 import sdl3.SDL_Delay
+import sdl3.SDL_GetCurrentDisplayMode
+import sdl3.SDL_GetDisplayForWindow
 import sdl3.SDL_GetPerformanceCounter
 import sdl3.SDL_GetPerformanceFrequency
 import sdl3.SDL_GetTicks
@@ -64,7 +67,7 @@ import sdl3.SDL_WaitEventTimeout
  routes events per SDL window id.
 
  Per-window pumping order matters: the render-bridge globals
- (currentTextMeasurer / currentImageLoader / viewport) are per-renderer, so the
+ (currentImageLoader / viewport) are per-renderer, so the
  loop installs a window's globals before recomposing / laying out / drawing it.
 
  `nativeComposeWindow(...)` remains as the single-window wrapper (all demo
@@ -142,8 +145,12 @@ fun nativeComposeApp(content: @Composable ApplicationScope.() -> Unit) {
 		val appScope = ApplicationScopeImpl(runtime)
 
 		val snapshotHandle = Snapshot.registerGlobalWriteObserver {
+			// Only SCHEDULE a frame here; the apply is coalesced to once per loop
+			// iteration (top of loop + before each pump + before layout in
+			// renderFrame) instead of walking every snapshot observer on every
+			// individual state write. Mirrors upstream GlobalSnapshotManager,
+			// which schedules rather than applying inline.
 			runtime.markAllNeedFrame()
-			Snapshot.sendApplyNotifications()
 		}
 
 		appComposition.setContent { appScope.content() }
@@ -216,6 +223,10 @@ fun nativeComposeApp(content: @Composable ApplicationScope.() -> Unit) {
 			//  Per-window pump + render.
 			var vAnyRendered = false
 			var vAllVsync = true
+			// Non-vsync fallback cap: the shortest frame interval among the
+			// rendered non-vsync windows' displays (60Hz default). Only used when
+			// no window is vsync-paced (Software renderer / vsync unavailable).
+			var vFallbackDelayMs = 16u
 			val vAppPending = appRecomposer.hasPendingWork
 			for (vW in runtime.windows.toList()) {
 				vW.installGlobals()
@@ -228,7 +239,10 @@ fun nativeComposeApp(content: @Composable ApplicationScope.() -> Unit) {
 				if (vW.shouldRender()) {
 					vW.renderFrame()
 					vAnyRendered = true
-					if (!vW.backend.vsyncEnabled) vAllVsync = false
+					if (!vW.backend.vsyncEnabled) {
+						vAllVsync = false
+						vFallbackDelayMs = minOf(vFallbackDelayMs, displayFrameDelayMs(vW.backend.window))
+					}
 				}
 				FrameProfiler.phase("render")
 			}
@@ -246,12 +260,19 @@ fun nativeComposeApp(content: @Composable ApplicationScope.() -> Unit) {
 			// ============
 			//  Pace / idle-skip.
 			if (vAnyRendered) {
-				SDL_Delay(if (vAllVsync) 1u else 16u)
+				SDL_Delay(if (vAllVsync) 1u else vFallbackDelayMs)
 			} else if (!vAppPending) {
 				// Nothing invalidated anywhere: block for events instead of
-				// spinning. Keep FPS windows anchored to active periods.
-				SDL_WaitEventTimeout(null, 10)
+				// spinning. A real input/redraw event wakes this immediately; the
+				// timeout only bounds how often async work (dispatcher/timers) is
+				// re-checked while truly idle, so keep it coarse to cut wakeups.
+				SDL_WaitEventTimeout(null, 100)
 				for (vW in runtime.windows) vW.resetFpsWindow()
+			} else {
+				// App composition has pending work but nothing rendered this
+				// iteration — yield briefly instead of spinning at full speed
+				// until the composition settles into a renderable state.
+				SDL_Delay(1u)
 			}
 
 			// ============
@@ -290,79 +311,6 @@ fun nativeComposeApp(content: @Composable ApplicationScope.() -> Unit) {
 	SDL_Quit()
 }
 
-/** CDN_PROFILE=1 — per-phase timings, printed every ~2s of rendered frames.
-   A named-phase SINGLETON so both the main loop (events / app / pump / render)
-   AND renderFrame's sub-steps (render.layout / render.draw / render.present)
-   report into one line. `mark()` resets the stopwatch; `phase(name)` charges
-   the elapsed since the last mark/phase to that name. Measure first, optimize
-   second — see ROADMAP.md. */
-@OptIn(kotlinx.cinterop.ExperimentalForeignApi::class)
-internal object FrameProfiler {
-	// null until first checked; then true/false for the run's lifetime.
-	private var fEnabled: Boolean? = null
-	// Output file — resolved once from CDN_PROFILE. Writing to a file (not
-	// stdout) lets GUI-subsystem apps (the demo links --subsystem,windows, so
-	// it has no console) be profiled too. CDN_PROFILE=1 → "cdn_profile.log" in
-	// the cwd; CDN_PROFILE=<path> → that path.
-	private var fPath: String = "cdn_profile.log"
-	val enabled: Boolean
-		get() = fEnabled ?: run {
-			val vEnv = platform.posix.getenv("CDN_PROFILE")?.toKString()
-			if (vEnv != null && vEnv != "1" && vEnv.isNotEmpty()) fPath = vEnv
-			(vEnv != null).also { fEnabled = it }
-		}
-
-	private val fFreq = SDL_GetPerformanceFrequency().toDouble()
-	// Insertion-ordered so the printed line follows the call order.
-	private val fSum = LinkedHashMap<String, Double>()
-	private val fMax = LinkedHashMap<String, Double>()
-	private var fFrames = 0
-	private var fLastPrintMs = SDL_GetTicks()
-	private var fMark = 0uL
-
-	fun mark() { if (enabled) fMark = SDL_GetPerformanceCounter() }
-
-	fun phase(inName: String) {
-		if (!enabled) return
-		val vNow = SDL_GetPerformanceCounter()
-		val vMs = (vNow - fMark).toDouble() * 1000.0 / fFreq
-		fSum[inName] = (fSum[inName] ?: 0.0) + vMs
-		if (vMs > (fMax[inName] ?: 0.0)) fMax[inName] = vMs
-		fMark = vNow
-	}
-
-	fun frameDone(inRendered: Boolean) {
-		if (!enabled) return
-		if (inRendered) fFrames++
-		val vNowMs = SDL_GetTicks()
-		if (vNowMs - fLastPrintMs >= 2000u && fFrames > 0) {
-			val vParts = fSum.keys.map { vName ->
-				val vAvg = (fSum[vName] ?: 0.0) / fFrames
-				"$vName=${(vAvg * 100).toInt() / 100.0}/${((fMax[vName] ?: 0.0) * 100).toInt() / 100.0}ms"
-			}
-			// Per-frame draw-work averages (see DrawStats): what's inside `draw`.
-			val vStats = com.compose.sdl.graphics.DrawStats
-			val vDraw = "geo=${vStats.geometrySubmits / fFrames} verts=${vStats.vertices / fFrames} " +
-				"masks=${vStats.maskRealizations / fFrames} text=${vStats.textDraws / fFrames} img=${vStats.imageBlits / fFrames}"
-			val vLine = "[profile] frames=$fFrames avg/max " + vParts.joinToString(" ") + " | per-frame " + vDraw + "\n"
-			val vFile = platform.posix.fopen(fPath, "a")
-			if (vFile != null) {
-				platform.posix.fputs(vLine, vFile)
-				platform.posix.fclose(vFile)
-			}
-			vStats.reset()
-			fSum.clear(); fMax.clear()
-			fFrames = 0
-			fLastPrintMs = vNowMs
-		}
-	}
-}
-
-/** CDN_FORCERENDER=1 forces every frame to render so sustained steady-state
-   timings can be measured on otherwise-idle screens (see TOOLING.md, frame
-   profiler). */
-private val kForceRender: Boolean = platform.posix.getenv("CDN_FORCERENDER") != null
-
 // ==================
 // MARK: Probe / screenshot support (render-to-quiescence)
 // ==================
@@ -419,6 +367,18 @@ fun windowHasInvalidations(): Boolean = renderingWindow?.hasInvalidations() ?: f
 @OptIn(kotlin.native.runtime.NativeRuntimeApi::class)
 private fun collectNativeGarbage() = kotlin.native.runtime.GC.collect()
 
+/** Frame interval (ms) of the window's current display, for the non-vsync
+   fallback pacing (SDL_Delay). Falls back to 16ms (~60Hz) when the mode can't
+   be read, so a 144Hz panel on a non-vsync path isn't capped to 60. */
+@OptIn(kotlinx.cinterop.ExperimentalForeignApi::class)
+private fun displayFrameDelayMs(window: COpaquePointer?): UInt {
+	val vWindow = window ?: return 16u
+	val vDisplay = SDL_GetDisplayForWindow(vWindow.reinterpret())
+	val vMode = SDL_GetCurrentDisplayMode(vDisplay) ?: return 16u
+	val vHz = vMode.pointed.refresh_rate
+	return if (vHz > 0f) (1000f / vHz).toUInt().coerceAtLeast(1u) else 16u
+}
+
 /** Single-window compatibility wrapper — the pre-multi-window entry point.
    Closing the window exits the app, exactly as before. */
 fun nativeComposeWindow(
@@ -776,6 +736,12 @@ internal class WindowInstance(
 		// Register bundled generic fonts (FontFamily.Monospace → NotoSansMono) once
 		// data.kres is loadable; idempotent, no-op if the font isn't bundled.
 		com.compose.sdl.text.registerGenericFonts()
+		// Position the OS IME candidate window the moment a field in THIS window
+		// gains focus, not only on the first TEXT_EDITING event (repointed per
+		// window here so multi-window focus targets the right SDL window).
+		com.compose.sdl.text.input.ImeBridge.onSessionActiveChange = { active ->
+			if (active) updateImeArea()
+		}
 	}
 
 	// ============
@@ -797,8 +763,8 @@ internal class WindowInstance(
 		// SDL3 delivers mouse coords in logical points on HiDPI — multiply by
 		// DPR so hit-testing lands in the pixel space layout uses.
 		val vDpr = backend.pixelDensity
-		val vPx = inEvent.event.x.toFloat() * vDpr
-		val vPy = inEvent.event.y.toFloat() * vDpr
+		val vPx = inEvent.event.x * vDpr
+		val vPy = inEvent.event.y * vDpr
 		if (inEvent.event.type == PointerEventType.Press) {
 			popupHost?.notifyOutsidePress(vPx.toInt(), vPy.toInt())
 		}
@@ -823,7 +789,7 @@ internal class WindowInstance(
 		needsFrame = true
 		installGlobals()
 		val vDpr = backend.pixelDensity
-		host.onWheel(inEvent.x.toFloat() * vDpr, inEvent.y.toFloat() * vDpr, inEvent.deltaX, inEvent.deltaY, SDL_GetTicks().toLong())
+		host.onWheel(inEvent.x * vDpr, inEvent.y * vDpr, inEvent.deltaX, inEvent.deltaY, SDL_GetTicks().toLong())
 	}
 
 	fun onKeyEvent(inEvent: AppEvent.Key) {
@@ -936,6 +902,11 @@ internal class WindowInstance(
 
 		backend.updateWindowSize()
 		vRender.ensureSize(backend.pixelWidth, backend.pixelHeight)
+		// Charge the GPU back-buffer acquire to its own phase. On Metal this is
+		// where nextDrawable() blocks on vsync (the natural frame pacing), so
+		// folding it into "layout" made the profiler read the vsync wait as
+		// layout cost — a ~6-7ms phantom that hid the real (tiny) layout time.
+		FrameProfiler.phase("  acquire")
 		host.setConstraints(backend.pixelWidth, backend.pixelHeight)
 		// Deliver any state written by this iteration's frame-clock continuations
 		// (withFrameNanos animations — notably smooth wheel scrolling) BEFORE we lay
@@ -1014,118 +985,5 @@ internal class WindowInstance(
 	}
 }
 
-// ==================
-// MARK: WindowArchitectureOwner
-// ==================
-
-/** Per-window architecture-components owner, modeled on upstream desktop's
-   DefaultArchitectureComponentsOwner (compose/ui skikoMain
-   PlatformOwnerProvider.skiko.kt): one object implements LifecycleOwner +
-   ViewModelStoreOwner + SavedStateRegistryOwner (+ the SavedState-aware
-   default ViewModel factory), so viewModel(), SavedStateHandle and
-   rememberSaveable-backed registries all resolve against the WINDOW scope.
-
-   The lifecycle registry uses createUnsafe (no main-thread enforcement) —
-   same as the root owner this replaces; the SDL loop is single-threaded
-   anyway. RESUMED from construction; destroy() moves to DESTROYED and clears
-   the ViewModelStore (onCleared runs). SavedState restores from nothing (no
-   process-death persistence on desktop — upstream desktop passes null too). */
-private class WindowArchitectureOwner :
-	androidx.lifecycle.LifecycleOwner,
-	androidx.lifecycle.ViewModelStoreOwner,
-	androidx.lifecycle.HasDefaultViewModelProviderFactory,
-	androidx.savedstate.SavedStateRegistryOwner {
-
-	override val lifecycle = androidx.lifecycle.LifecycleRegistry.createUnsafe(this)
-	override val viewModelStore = androidx.lifecycle.ViewModelStore()
-
-	private val savedStateController = androidx.savedstate.SavedStateRegistryController.create(this)
-	override val savedStateRegistry: androidx.savedstate.SavedStateRegistry
-		get() = savedStateController.savedStateRegistry
-
-	override val defaultViewModelProviderFactory = androidx.lifecycle.SavedStateViewModelFactory()
-	override val defaultViewModelCreationExtras: androidx.lifecycle.viewmodel.CreationExtras
-		get() = androidx.lifecycle.viewmodel.MutableCreationExtras().also {
-			it[androidx.lifecycle.SAVED_STATE_REGISTRY_OWNER_KEY] = this
-			it[androidx.lifecycle.VIEW_MODEL_STORE_OWNER_KEY] = this
-		}
-
-	init {
-		savedStateController.performAttach()
-		savedStateController.performRestore(null)
-		// SavedStateHandle support for WINDOW-scoped ViewModels — must run while
-		// the lifecycle is still ≤ CREATED; upstream desktop's ComposeContainer
-		// calls this at the same point. With it, `viewModel { ... }` against the
-		// window owner (the activityViewModels() analog) can take a
-		// SavedStateHandle instead of needing a saved-state-less child owner.
-		enableSavedStateHandles()
-		// CREATED (not RESUMED) until the first composition is done — code that
-		// runs enableSavedStateHandles() during composition (nav3's decorators,
-		// rememberViewModelStoreOwner, …) requires INITIALIZED/CREATED, and
-		// upstream desktop windows likewise compose first and resume after.
-		lifecycle.currentState = androidx.lifecycle.Lifecycle.State.CREATED
-	}
-
-	/** Focus/visibility-driven state (see WindowInstance.onActivationEvent).
-	   Ignored once destroyed — a stray SDL event during teardown must not
-	   resurrect the registry. */
-	fun setLifecycleState(inState: androidx.lifecycle.Lifecycle.State) {
-		if (lifecycle.currentState != androidx.lifecycle.Lifecycle.State.DESTROYED &&
-			lifecycle.currentState != inState
-		) {
-			lifecycle.currentState = inState
-		}
-	}
-
-	fun destroy() {
-		lifecycle.currentState = androidx.lifecycle.Lifecycle.State.DESTROYED
-		viewModelStore.clear()
-	}
-}
-
-// ==================
-// MARK: Input helpers
-// ==================
-
-/** Escape → back: port of upstream desktop's BackNavigationEventInput. An
-   unconsumed Escape KeyDown completes a back navigation on the dispatcher
-   this input is registered with (BackHandler / PredictiveBackHandler
-   consumers: m3 SearchBar collapse, dialog dismissal, …). */
-private class BackNavigationInput : androidx.navigationevent.NavigationEventInput() {
-	fun onKeyEvent(inEvent: androidx.compose.ui.input.key.KeyEvent): Boolean {
-		if (inEvent.type == androidx.compose.ui.input.key.KeyEventType.KeyDown &&
-			inEvent.key == androidx.compose.ui.input.key.Key.Escape
-		) {
-			dispatchOnBackCompleted()
-			return true
-		}
-		return false
-	}
-}
-
-/** Re-dispatches committed text (SDL TEXT_INPUT) as one synthetic typed
-   KeyDown per Unicode codepoint (surrogate pairs folded). Key.Unknown +
-   codePoint + no modifiers matches both vendored text stacks' isTypedEvent
-   criteria; the SDL key mapper leaves codePoint = 0 on real key events, so
-   the physical KeyDown and the synthetic one can never double-insert. */
-private fun dispatchTypedText(inHost: ComposeRootHost, inText: String) {
-	var vI = 0
-	while (vI < inText.length) {
-		val vHigh = inText[vI]
-		val vCodepoint: Int
-		if (vHigh.isHighSurrogate() && vI + 1 < inText.length && inText[vI + 1].isLowSurrogate()) {
-			vCodepoint = 0x10000 + ((vHigh.code - 0xD800) shl 10) + (inText[vI + 1].code - 0xDC00)
-			vI += 2
-		} else {
-			vCodepoint = vHigh.code
-			vI += 1
-		}
-		inHost.dispatchKeyEvent(
-			androidx.compose.ui.input.key.KeyEvent(
-				key = androidx.compose.ui.input.key.Key.Unknown,
-				type = androidx.compose.ui.input.key.KeyEventType.KeyDown,
-				codePoint = vCodepoint,
-			),
-		)
-	}
-}
+// WindowArchitectureOwner -> WindowArchitectureOwner.kt
+// BackNavigationInput / dispatchTypedText -> WindowInputHelpers.kt

compose/desktop/native/window/src/nativeMain/kotlin/com/compose/sdl/FrameProfiler.kt

@@ -0,0 +1,78 @@
+package com.compose.sdl
+
+import kotlinx.cinterop.toKString
+import sdl3.SDL_GetPerformanceCounter
+import sdl3.SDL_GetPerformanceFrequency
+import sdl3.SDL_GetTicks
+
+// ==================
+// MARK: FrameProfiler
+// ==================
+
+/** CDN_PROFILE=1 — per-phase timings, printed every ~2s of rendered frames.
+   A named-phase SINGLETON so both the main loop (events / app / pump / render)
+   AND renderFrame's sub-steps (render.layout / render.draw / render.present)
+   report into one line. `mark()` resets the stopwatch; `phase(name)` charges
+   the elapsed since the last mark/phase to that name. Measure first, optimize
+   second — see ROADMAP.md. */
+@OptIn(kotlinx.cinterop.ExperimentalForeignApi::class)
+internal object FrameProfiler {
+	// null until first checked; then true/false for the run's lifetime.
+	private var fEnabled: Boolean? = null
+	// Output file — resolved once from CDN_PROFILE. Writing to a file (not
+	// stdout) lets GUI-subsystem apps (the demo links --subsystem,windows, so
+	// it has no console) be profiled too. CDN_PROFILE=1 → "cdn_profile.log" in
+	// the cwd; CDN_PROFILE=<path> → that path.
+	private var fPath: String = "cdn_profile.log"
+	val enabled: Boolean
+		get() = fEnabled ?: run {
+			val vEnv = platform.posix.getenv("CDN_PROFILE")?.toKString()
+			if (vEnv != null && vEnv != "1" && vEnv.isNotEmpty()) fPath = vEnv
+			(vEnv != null).also { fEnabled = it }
+		}
+
+	private val fFreq = SDL_GetPerformanceFrequency().toDouble()
+	// Insertion-ordered so the printed line follows the call order.
+	private val fSum = LinkedHashMap<String, Double>()
+	private val fMax = LinkedHashMap<String, Double>()
+	private var fFrames = 0
+	private var fLastPrintMs = SDL_GetTicks()
+	private var fMark = 0uL
+
+	fun mark() { if (enabled) fMark = SDL_GetPerformanceCounter() }
+
+	fun phase(inName: String) {
+		if (!enabled) return
+		val vNow = SDL_GetPerformanceCounter()
+		val vMs = (vNow - fMark).toDouble() * 1000.0 / fFreq
+		fSum[inName] = (fSum[inName] ?: 0.0) + vMs
+		if (vMs > (fMax[inName] ?: 0.0)) fMax[inName] = vMs
+		fMark = vNow
+	}
+
+	fun frameDone(inRendered: Boolean) {
+		if (!enabled) return
+		if (inRendered) fFrames++
+		val vNowMs = SDL_GetTicks()
+		if (vNowMs - fLastPrintMs >= 2000u && fFrames > 0) {
+			val vParts = fSum.keys.map { vName ->
+				val vAvg = (fSum[vName] ?: 0.0) / fFrames
+				"$vName=${(vAvg * 100).toInt() / 100.0}/${((fMax[vName] ?: 0.0) * 100).toInt() / 100.0}ms"
+			}
+			val vLine = "[profile] frames=$fFrames avg/max " + vParts.joinToString(" ") + "\n"
+			val vFile = platform.posix.fopen(fPath, "a")
+			if (vFile != null) {
+				platform.posix.fputs(vLine, vFile)
+				platform.posix.fclose(vFile)
+			}
+			fSum.clear(); fMax.clear()
+			fFrames = 0
+			fLastPrintMs = vNowMs
+		}
+	}
+}
+
+/** CDN_FORCERENDER=1 forces every frame to render so sustained steady-state
+   timings can be measured on otherwise-idle screens (see TOOLING.md, frame
+   profiler). */
+internal val kForceRender: Boolean = platform.posix.getenv("CDN_FORCERENDER") != null

compose/desktop/native/window/src/nativeMain/kotlin/com/compose/sdl/WindowArchitectureOwner.kt

@@ -0,0 +1,72 @@
+package com.compose.sdl
+
+import androidx.lifecycle.enableSavedStateHandles
+
+// ==================
+// MARK: WindowArchitectureOwner
+// ==================
+
+/** Per-window architecture-components owner, modeled on upstream desktop's
+   DefaultArchitectureComponentsOwner (compose/ui skikoMain
+   PlatformOwnerProvider.skiko.kt): one object implements LifecycleOwner +
+   ViewModelStoreOwner + SavedStateRegistryOwner (+ the SavedState-aware
+   default ViewModel factory), so viewModel(), SavedStateHandle and
+   rememberSaveable-backed registries all resolve against the WINDOW scope.
+
+   The lifecycle registry uses createUnsafe (no main-thread enforcement) —
+   same as the root owner this replaces; the SDL loop is single-threaded
+   anyway. RESUMED from construction; destroy() moves to DESTROYED and clears
+   the ViewModelStore (onCleared runs). SavedState restores from nothing (no
+   process-death persistence on desktop — upstream desktop passes null too). */
+internal class WindowArchitectureOwner :
+	androidx.lifecycle.LifecycleOwner,
+	androidx.lifecycle.ViewModelStoreOwner,
+	androidx.lifecycle.HasDefaultViewModelProviderFactory,
+	androidx.savedstate.SavedStateRegistryOwner {
+
+	override val lifecycle = androidx.lifecycle.LifecycleRegistry.createUnsafe(this)
+	override val viewModelStore = androidx.lifecycle.ViewModelStore()
+
+	private val savedStateController = androidx.savedstate.SavedStateRegistryController.create(this)
+	override val savedStateRegistry: androidx.savedstate.SavedStateRegistry
+		get() = savedStateController.savedStateRegistry
+
+	override val defaultViewModelProviderFactory = androidx.lifecycle.SavedStateViewModelFactory()
+	override val defaultViewModelCreationExtras: androidx.lifecycle.viewmodel.CreationExtras
+		get() = androidx.lifecycle.viewmodel.MutableCreationExtras().also {
+			it[androidx.lifecycle.SAVED_STATE_REGISTRY_OWNER_KEY] = this
+			it[androidx.lifecycle.VIEW_MODEL_STORE_OWNER_KEY] = this
+		}
+
+	init {
+		savedStateController.performAttach()
+		savedStateController.performRestore(null)
+		// SavedStateHandle support for WINDOW-scoped ViewModels — must run while
+		// the lifecycle is still ≤ CREATED; upstream desktop's ComposeContainer
+		// calls this at the same point. With it, `viewModel { ... }` against the
+		// window owner (the activityViewModels() analog) can take a
+		// SavedStateHandle instead of needing a saved-state-less child owner.
+		enableSavedStateHandles()
+		// CREATED (not RESUMED) until the first composition is done — code that
+		// runs enableSavedStateHandles() during composition (nav3's decorators,
+		// rememberViewModelStoreOwner, …) requires INITIALIZED/CREATED, and
+		// upstream desktop windows likewise compose first and resume after.
+		lifecycle.currentState = androidx.lifecycle.Lifecycle.State.CREATED
+	}
+
+	/** Focus/visibility-driven state (see WindowInstance.onActivationEvent).
+	   Ignored once destroyed — a stray SDL event during teardown must not
+	   resurrect the registry. */
+	fun setLifecycleState(inState: androidx.lifecycle.Lifecycle.State) {
+		if (lifecycle.currentState != androidx.lifecycle.Lifecycle.State.DESTROYED &&
+			lifecycle.currentState != inState
+		) {
+			lifecycle.currentState = inState
+		}
+	}
+
+	fun destroy() {
+		lifecycle.currentState = androidx.lifecycle.Lifecycle.State.DESTROYED
+		viewModelStore.clear()
+	}
+}

compose/desktop/native/window/src/nativeMain/kotlin/com/compose/sdl/WindowInputHelpers.kt

@@ -0,0 +1,54 @@
+@file:OptIn(androidx.compose.ui.InternalComposeUiApi::class)
+
+package com.compose.sdl
+
+import androidx.compose.ui.input.key.key
+import androidx.compose.ui.input.key.type
+import com.compose.sdl.node.ComposeRootHost
+
+// ==================
+// MARK: Input helpers
+// ==================
+
+/** Escape → back: port of upstream desktop's BackNavigationEventInput. An
+   unconsumed Escape KeyDown completes a back navigation on the dispatcher
+   this input is registered with (BackHandler / PredictiveBackHandler
+   consumers: m3 SearchBar collapse, dialog dismissal, …). */
+internal class BackNavigationInput : androidx.navigationevent.NavigationEventInput() {
+	fun onKeyEvent(inEvent: androidx.compose.ui.input.key.KeyEvent): Boolean {
+		if (inEvent.type == androidx.compose.ui.input.key.KeyEventType.KeyDown &&
+			inEvent.key == androidx.compose.ui.input.key.Key.Escape
+		) {
+			dispatchOnBackCompleted()
+			return true
+		}
+		return false
+	}
+}
+
+/** Re-dispatches committed text (SDL TEXT_INPUT) as one synthetic typed
+   KeyDown per Unicode codepoint (surrogate pairs folded). Key.Unknown +
+   codePoint + no modifiers matches both vendored text stacks' isTypedEvent
+   criteria; the SDL key mapper leaves codePoint = 0 on real key events, so
+   the physical KeyDown and the synthetic one can never double-insert. */
+internal fun dispatchTypedText(inHost: ComposeRootHost, inText: String) {
+	var vI = 0
+	while (vI < inText.length) {
+		val vHigh = inText[vI]
+		val vCodepoint: Int
+		if (vHigh.isHighSurrogate() && vI + 1 < inText.length && inText[vI + 1].isLowSurrogate()) {
+			vCodepoint = 0x10000 + ((vHigh.code - 0xD800) shl 10) + (inText[vI + 1].code - 0xDC00)
+			vI += 2
+		} else {
+			vCodepoint = vHigh.code
+			vI += 1
+		}
+		inHost.dispatchKeyEvent(
+			androidx.compose.ui.input.key.KeyEvent(
+				key = androidx.compose.ui.input.key.Key.Unknown,
+				type = androidx.compose.ui.input.key.KeyEventType.KeyDown,
+				codePoint = vCodepoint,
+			),
+		)
+	}
+}

compose/foundation/foundation-layout/api/foundation-layout.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:foundation-layout>
+// Library unique name: <com.bitsycore.compose.foundation:foundation-layout>
 open annotation class androidx.compose.foundation.layout/ExperimentalFlexBoxApi : kotlin/Annotation { // androidx.compose.foundation.layout/ExperimentalFlexBoxApi|null[0]
     constructor <init>() // androidx.compose.foundation.layout/ExperimentalFlexBoxApi.<init>|<init>(){}[0]
 }

compose/foundation/foundation-layout/build.gradle.kts

@@ -13,8 +13,7 @@ plugins {
 	alias(libs.plugins.kotlin.plugin.compose)
 }
 
-// Skip mingwX64 on non-Windows hosts; see root build.gradle.kts.
-val vHostSupportsMingw: Boolean by rootProject.extra
+val vHostSupportsMingw = rootProject.extra["vHostSupportsMingw"] as Boolean
 
 kotlin {
 	linuxArm64()

compose/foundation/foundation/api/foundation.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:foundation>
+// Library unique name: <com.bitsycore.compose.foundation:foundation>
 open annotation class androidx.compose.foundation.lazy.grid/LazyGridScopeMarker : kotlin/Annotation { // androidx.compose.foundation.lazy.grid/LazyGridScopeMarker|null[0]
     constructor <init>() // androidx.compose.foundation.lazy.grid/LazyGridScopeMarker.<init>|<init>(){}[0]
 }

compose/foundation/foundation/build.gradle.kts

@@ -1,8 +1,8 @@
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
 
 // :foundation — androidx.compose.foundation.* AND androidx.compose.animation.*
-// (non-core) vendored VERBATIM from upstream. Sits on :core (which still owns
-// androidx.compose.ui.*, both renderers, cinterops) + :animation-core.
+// (non-core) vendored VERBATIM from upstream. Sits on :ui (which still owns
+// androidx.compose.ui.*, the Skia renderer, cinterops) + :animation-core.
 //
 // Why the two upstream modules (`:animation` and `:foundation`) are combined
 // here: upstream splits `foundation-layout` off from `foundation`, then has
@@ -20,9 +20,9 @@ import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
 // Note on DarkTheme: foundation declares `internal expect fun _isSystemInDarkTheme()`,
 // and its actual lives here as a plain nativeMain kt file (see
 // src/nativeMain/kotlin/androidx/compose/foundation/DarkTheme.native.kt) — a single
-// stub returning false. The upstream skiko/sdl per-renderer actuals were dropped
-// when :foundation was split from :core: expect/actual must live in the same
-// module, and duplicating the skikoRenderer/sdlRenderer source-set hierarchy on
+// stub returning false. The upstream skiko per-renderer actuals were dropped
+// when :foundation was split from :ui: expect/actual must live in the same
+// module, and duplicating the skikoRenderer source-set hierarchy on
 // :foundation just to read `LocalSystemTheme` on the Skia path was more build
 // wiring than is worth it for one function no in-repo app calls.
 //
@@ -34,8 +34,7 @@ plugins {
     alias(libs.plugins.compose.multiplatform)
 }
 
-// Skip mingwX64 on non-Windows hosts; see root build.gradle.kts.
-val vHostSupportsMingw: Boolean by rootProject.extra
+val vHostSupportsMingw = rootProject.extra["vHostSupportsMingw"] as Boolean
 
 kotlin {
     linuxArm64()

compose/foundation/foundation/compose-fork.txt

@@ -517,6 +517,11 @@ skikoMain/kotlin/ -> src/vendor/native/kotlin/
 !skikoMain/kotlin/androidx/compose/foundation/BasicContextMenuRepresentation.skiko.kt
 !skikoMain/kotlin/androidx/compose/foundation/Clickable.skiko.kt
 !skikoMain/kotlin/androidx/compose/foundation/DarkTheme.skiko.kt
+# Scrollbar.skiko.kt + v2/Scrollbar.skiko.kt are MANUALLY VENDORED to
+# src/nativeMain/.../foundation/{,v2}/ (VENDOR-BASE headers there): the flat
+# native source set can't hold the v2 `expect fun runBlockingIfPossible` and its
+# actual together, so it's inlined to runBlocking. Refused here so sync doesn't
+# shadow the hand-vendored copies.
 !skikoMain/kotlin/androidx/compose/foundation/Scrollbar.skiko.kt
 !skikoMain/kotlin/androidx/compose/foundation/draganddrop/DragAndDropSource.skiko.kt
 !skikoMain/kotlin/androidx/compose/foundation/text/CupertinoTextFieldPointerModifier.skiko.kt

compose/foundation/foundation/src/commonMain/kotlin/com/compose/sdl/scrollbar/Scrollbar.kt

@@ -1,342 +0,0 @@
-package com.compose.sdl.scrollbar
-
-import androidx.compose.foundation.ScrollState
-import androidx.compose.foundation.background
-import androidx.compose.foundation.lazy.LazyListState
-import androidx.compose.foundation.hoverable
-import androidx.compose.animation.animateColorAsState
-import androidx.compose.animation.core.tween
-import androidx.compose.foundation.interaction.MutableInteractionSource
-import androidx.compose.foundation.interaction.collectIsHoveredAsState
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.offset
-import androidx.compose.foundation.layout.width
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.Immutable
-import androidx.compose.runtime.compositionLocalOf
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.runtime.setValue
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.clip
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.Shape
-import androidx.compose.ui.layout.onSizeChanged
-import androidx.compose.ui.platform.LocalDensity
-import androidx.compose.ui.unit.Dp
-import androidx.compose.ui.unit.IntOffset
-import androidx.compose.ui.input.pointer.pointerInput
-import androidx.compose.foundation.gestures.awaitEachGesture
-import androidx.compose.foundation.gestures.awaitFirstDown
-import androidx.compose.foundation.gestures.scrollBy
-import androidx.compose.ui.unit.dp
-import kotlinx.coroutines.launch
-import kotlin.math.abs
-import kotlin.math.roundToInt
-
-// ==================
-// MARK: Scrollbar (Compose Desktop-style)
-// ==================
-
-/** A faithful subset of Compose Desktop's scrollbar (androidx.compose.foundation).
-   You overlay a VerticalScrollbar / HorizontalScrollbar on a scrollable and feed
-   it a ScrollbarAdapter built from the same ScrollState. This project's Box has
-   no BoxScope (so no Modifier.align) — pin the bar with the Box's
-   contentAlignment; the fillMaxSize content fills the rest:
-
-       Box(Modifier.fillMaxSize(), contentAlignment = Alignment.CenterEnd) {
-           val state = rememberScrollState()
-           Column(Modifier.fillMaxSize().verticalScroll(state)) { ... }
-           VerticalScrollbar(
-               adapter = rememberScrollbarAdapter(state),
-               modifier = Modifier.fillMaxHeight(),
-           )
-       }
-
-   Always visible (no auto-hide); the thumb tweens unhoverColor -> hoverColor on
-   hover over hoverDurationMillis, matching upstream. Drag the thumb to scroll;
-   click the track to page. */
-
-@Immutable
-class ScrollbarStyle(
-    val minimalHeight: Dp,
-    val thickness: Dp,
-    val shape: Shape,
-    val hoverDurationMillis: Int,
-    val unhoverColor: Color,
-    val hoverColor: Color,
-)
-
-/** Upstream default: an 8dp black thumb that's faint until hovered. Dark UIs
-   provide a white-tinted style via LocalScrollbarStyle or the `style` param. */
-fun defaultScrollbarStyle(): ScrollbarStyle = ScrollbarStyle(
-    minimalHeight = 16.dp,
-    thickness = 8.dp,
-    shape = RoundedCornerShape(4.dp),
-    hoverDurationMillis = 300,
-    unhoverColor = Color.Black.copy(alpha = 0.12f),
-    hoverColor = Color.Black.copy(alpha = 0.50f),
-)
-
-val LocalScrollbarStyle = compositionLocalOf { defaultScrollbarStyle() }
-
-// ==================
-// MARK: ScrollbarAdapter
-// ==================
-
-/** Bridges a scrollable's state to the scrollbar in pixels. scrollOffset /
-   contentSize / viewportSize are along the scroll axis; the thumb is sized by
-   viewportSize / contentSize and positioned by scrollOffset / (content - viewport). */
-interface ScrollbarAdapter {
-    val scrollOffset: Double
-    val contentSize: Double
-    val viewportSize: Double
-    suspend fun scrollTo(scrollOffset: Double)
-}
-
-@Composable
-fun rememberScrollbarAdapter(scrollState: ScrollState): ScrollbarAdapter =
-    remember(scrollState) { ScrollStateScrollbarAdapter(scrollState) }
-
-private class ScrollStateScrollbarAdapter(private val state: ScrollState) : ScrollbarAdapter {
-    override val scrollOffset: Double get() = state.value.toDouble()
-    override val contentSize: Double get() = state.contentSize.toDouble()
-    override val viewportSize: Double get() = state.viewportSize.toDouble()
-    override suspend fun scrollTo(scrollOffset: Double) {
-        // Scrollbar thumb drag → instant scroll-to. dispatchRawDelta takes a
-        // delta in pixels; convert the target offset into a delta from where
-        // we are now (clamping at the scroll edges is the dispatchRawDelta
-        // contract, so we don't have to coerce here).
-        state.dispatchRawDelta((scrollOffset - state.value.toDouble()).toFloat())
-    }
-}
-
-/** Adapter for a virtualized LazyColumn / LazyRow. A lazy list only knows the
-   size of its VISIBLE items, so exact pixel geometry of off-screen content is
-   unknowable — we estimate it from the average visible item size × total item
-   count (the same approach as Compose Desktop). Accurate enough for a thumb
-   whose length/position track the scroll position; the estimate self-corrects
-   as items of different sizes scroll through the viewport. */
-@Composable
-fun rememberScrollbarAdapter(scrollState: LazyListState): ScrollbarAdapter =
-    remember(scrollState) { LazyListScrollbarAdapter(scrollState) }
-
-private class LazyListScrollbarAdapter(private val state: LazyListState) : ScrollbarAdapter {
-    // Mean main-axis size of the currently-visible items, in px (>= 1 to avoid /0).
-    private fun averageItemSize(): Double {
-        val vVisible = state.layoutInfo.visibleItemsInfo
-        if (vVisible.isEmpty()) return 0.0
-        val vSpan = (vVisible.last().offset + vVisible.last().size) - vVisible.first().offset
-        return (vSpan.toDouble() / vVisible.size).coerceAtLeast(1.0)
-    }
-
-    override val scrollOffset: Double
-        get() = averageItemSize() * state.firstVisibleItemIndex + state.firstVisibleItemScrollOffset
-
-    override val contentSize: Double
-        get() = averageItemSize() * state.layoutInfo.totalItemsCount
-
-    override val viewportSize: Double
-        get() = (state.layoutInfo.viewportEndOffset - state.layoutInfo.viewportStartOffset).toDouble()
-
-    override suspend fun scrollTo(scrollOffset: Double) {
-        val vDistance = scrollOffset - this.scrollOffset
-        // Within a viewport, scroll by EXACT pixels so a drag stays smooth. A lazy
-        // list's pixel geometry is only ESTIMATED (average visible item size), and
-        // that estimate drifts as differently-sized items scroll through the
-        // viewport — so index-snapping every frame makes the thumb jump. scrollBy
-        // sidesteps the estimate entirely. This is what Compose Desktop's own
-        // LazyListScrollbarAdapter does, and for the same reason.
-        if (abs(vDistance) <= viewportSize) {
-            state.scrollBy(vDistance.toFloat())
-            return
-        }
-        // Far jump (track-click paging past a viewport): no exact geometry to lean
-        // on, so estimate an index/offset from the average and snap to it.
-        val vAvg = averageItemSize()
-        if (vAvg <= 0.0) return
-        val vTarget = scrollOffset.coerceAtLeast(0.0)
-        val vTotal = state.layoutInfo.totalItemsCount
-        val vIndex = (vTarget / vAvg).toInt().coerceIn(0, (vTotal - 1).coerceAtLeast(0))
-        val vItemOffset = (vTarget - vIndex * vAvg).toInt().coerceAtLeast(0)
-        state.scrollToItem(vIndex, vItemOffset)
-    }
-}
-
-// ==================
-// MARK: VerticalScrollbar / HorizontalScrollbar
-// ==================
-
-@Composable
-fun VerticalScrollbar(
-    adapter: ScrollbarAdapter,
-    modifier: Modifier = Modifier,
-    reverseLayout: Boolean = false,
-    style: ScrollbarStyle = LocalScrollbarStyle.current,
-    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
-) = Scrollbar(adapter, modifier, reverseLayout, style, interactionSource, isVertical = true)
-
-@Composable
-fun HorizontalScrollbar(
-    adapter: ScrollbarAdapter,
-    modifier: Modifier = Modifier,
-    reverseLayout: Boolean = false,
-    style: ScrollbarStyle = LocalScrollbarStyle.current,
-    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
-) = Scrollbar(adapter, modifier, reverseLayout, style, interactionSource, isVertical = false)
-
-/** Shared impl. The root Box is the track (fixed thickness on the cross axis,
-   filling the main axis from the caller's modifier); a child Box is the thumb,
-   positioned with an offset. Drag + track-click are handled on the track in
-   track-relative coordinates (a stable origin), so the grab point stays under
-   the pointer with no feedback from the thumb moving. interactionSource is
-   accepted for API parity; hover here is driven by Modifier.hoverable. */
-@Composable
-private fun Scrollbar(
-    adapter: ScrollbarAdapter,
-    modifier: Modifier,
-    reverseLayout: Boolean,
-    style: ScrollbarStyle,
-    @Suppress("UNUSED_PARAMETER") interactionSource: MutableInteractionSource,
-    isVertical: Boolean,
-) {
-    val vScope = rememberCoroutineScope()
-    var vTrackPx by remember { mutableStateOf(0) }
-    val vHoverSource = remember { MutableInteractionSource() }
-    val vHovered by vHoverSource.collectIsHoveredAsState()
-    var vDraggingThumb by remember { mutableStateOf(false) }
-    // onSizeChanged reports PHYSICAL pixels (Option-B density flow), so every
-    // int/px carried through here — vTrackPx, vThumbLen, vThumbPos — is in
-    // physical pixels. Passing them into `.dp` doubles again through
-    // density.toPx() on Retina, which visibly bloated the thumb (filled the
-    // whole track) and made drag/track-click positions land 2× too far down.
-    // Route pixel-sized modifiers through the current density so `.dp` and the
-    // pixel value stay in the same coord space.
-    val vDensity = LocalDensity.current
-
-    val vContent = adapter.contentSize
-    val vViewport = adapter.viewportSize
-    val vOffset = adapter.scrollOffset
-    val vMaxScroll = vContent - vViewport
-    val vScrollable = vMaxScroll > 0.5 && vViewport > 0.0
-
-    val vColor by animateColorAsState(
-        targetValue = if (vHovered || vDraggingThumb) style.hoverColor else style.unhoverColor,
-        animationSpec = tween(style.hoverDurationMillis),
-    )
-
-    val vRoot = (if (isVertical) modifier.width(style.thickness) else modifier.height(style.thickness))
-        .onSizeChanged { vTrackPx = if (isVertical) it.height else it.width }
-        .hoverable(vHoverSource)
-
-    Box(modifier = vRoot) {
-        if (!vScrollable || vTrackPx <= 0) return@Box
-
-        // ============
-        //  Thumb metrics (px)
-        val vMinLen = style.minimalHeight.value.toInt()
-        val vThumbLen = (vTrackPx * (vViewport / vContent)).roundToInt()
-            .coerceIn(vMinLen.coerceAtMost(vTrackPx), vTrackPx)
-        val vTravel = vTrackPx - vThumbLen
-        val vRawPos = if (vTravel <= 0) 0 else (vTravel * (vOffset / vMaxScroll)).roundToInt()
-        val vThumbPos = (if (reverseLayout) vTravel - vRawPos else vRawPos).coerceIn(0, vTravel)
-
-        val vThumbLenDp = with(vDensity) { vThumbLen.toDp() }
-        val vThumbMod = (
-            if (isVertical) Modifier.offset { IntOffset(0, vThumbPos) }.width(style.thickness).height(vThumbLenDp)
-            else Modifier.offset { IntOffset(vThumbPos, 0) }.height(style.thickness).width(vThumbLenDp)
-            )
-            .clip(style.shape)
-            .background(vColor)
-
-        Box(modifier = vThumbMod)
-
-        // ============
-        //  Drag the thumb / page on track click — handled on the track so the
-        //  coordinates have a stable (non-moving) origin. The press is CONSUMED:
-        //  a scrollbar owns the pointer input it handles, so content sharing this
-        //  region (the scrollable beneath, or a parent that also reads pointer
-        //  input) never reacts to the same press. Geometry is read LIVE from the
-        //  adapter at press time — not from the captured render metrics above,
-        //  which go stale between pointerInput relaunches — so a grab after a
-        //  wheel-scroll still hit-tests against the thumb's current position.
-        Box(
-            modifier = Modifier
-                .matchTrackSize(isVertical, with(vDensity) { vTrackPx.toDp() }, style.thickness)
-                .pointerInput(isVertical, adapter, vTrackPx, reverseLayout) {
-                    awaitEachGesture {
-                        val vDown = awaitFirstDown(requireUnconsumed = false)
-                        vDown.consume()
-
-                        // Live geometry — stable for the drag's duration (content /
-                        // viewport / track sizes don't change mid-drag).
-                        val vContentPx = adapter.contentSize
-                        val vViewportPx = adapter.viewportSize
-                        val vMaxScrollPx = vContentPx - vViewportPx
-                        if (vMaxScrollPx <= 0.0 || vTrackPx <= 0) return@awaitEachGesture
-                        val vMinLen = style.minimalHeight.value.toInt()
-                        val vLen = (vTrackPx * (vViewportPx / vContentPx)).roundToInt()
-                            .coerceIn(vMinLen.coerceAtMost(vTrackPx), vTrackPx)
-                        val vTravelPx = vTrackPx - vLen
-                        val vRaw = if (vTravelPx <= 0) 0
-                                   else (vTravelPx * (adapter.scrollOffset / vMaxScrollPx)).roundToInt()
-                        val vPos = (if (reverseLayout) vTravelPx - vRaw else vRaw).coerceIn(0, vTravelPx)
-
-                        // Map a track-relative thumb-top to a scroll offset. The
-                        // target uses the LIVE max scroll (read fresh each move),
-                        // not the press-time value — the adapter compares it against
-                        // its live scrollOffset, and mixing a stale scale with a live
-                        // one makes the delta run away (grab at the bottom, drag up,
-                        // and the list overshoots to the middle).
-                        fun scrollToTrackPos(inThumbTop: Int) {
-                            if (vTravelPx <= 0) return
-                            val vLiveMax = adapter.contentSize - adapter.viewportSize
-                            if (vLiveMax <= 0.0) return
-                            val vClamped = inThumbTop.coerceIn(0, vTravelPx)
-                            val vFrac = (if (reverseLayout) vTravelPx - vClamped else vClamped).toDouble() / vTravelPx
-                            vScope.launch { adapter.scrollTo(vFrac * vLiveMax) }
-                        }
-
-                        val vPress = (if (isVertical) vDown.position.y else vDown.position.x).toInt()
-                        val vGrab: Int
-                        if (vPress in vPos..(vPos + vLen)) {
-                            vDraggingThumb = true
-                            vGrab = vPress - vPos
-                        } else {
-                            // Page toward the click by one viewport.
-                            vDraggingThumb = false
-                            vGrab = 0
-                            val vDir = if (vPress < vPos) -1.0 else 1.0
-                            vScope.launch { adapter.scrollTo(adapter.scrollOffset + vDir * vViewportPx) }
-                        }
-
-                        // Follow the pressed pointer to release, consuming every
-                        // change so the interaction can't leak. Only a thumb grab
-                        // drags-to-scroll; a track press just consumes.
-                        do {
-                            val vEvent = awaitPointerEvent()
-                            val vChange = vEvent.changes.firstOrNull { it.id == vDown.id } ?: break
-                            if (vDraggingThumb) {
-                                val vCur = (if (isVertical) vChange.position.y else vChange.position.x).toInt()
-                                scrollToTrackPos(vCur - vGrab)
-                            }
-                            vChange.consume()
-                        } while (vEvent.changes.any { it.id == vDown.id && it.pressed })
-
-                        vDraggingThumb = false
-                    }
-                }
-        )
-    }
-}
-
-/** Sizes the invisible drag-capture overlay to the full track. `inTrackDp`
-   comes from the caller pre-converted via LocalDensity (Option-B: layout
-   coords are physical px, so px-to-dp goes through the current density). */
-private fun Modifier.matchTrackSize(inVertical: Boolean, inTrackDp: Dp, inThickness: Dp): Modifier =
-    if (inVertical) this.width(inThickness).height(inTrackDp)
-    else this.height(inThickness).width(inTrackDp)

compose/foundation/foundation/src/nativeMain/kotlin/androidx/compose/foundation/DarkTheme.native.kt

@@ -2,9 +2,10 @@ package androidx.compose.foundation
 
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.ReadOnlyComposable
-import sdl3.SDL_GetSystemTheme
-import sdl3.SDL_SystemTheme
+import com.compose.sdl.res.systemThemeIsDarkProvider
 
+// System dark-theme flag via the platform-env seam (installed by the SDL layer),
+// so :foundation carries no dependency on the sdl3 cinterop.
 @Composable
 @ReadOnlyComposable
-internal actual fun _isSystemInDarkTheme(): Boolean = SDL_GetSystemTheme() == SDL_SystemTheme.SDL_SYSTEM_THEME_DARK
+internal actual fun _isSystemInDarkTheme(): Boolean = systemThemeIsDarkProvider?.invoke() ?: false

compose/foundation/foundation/src/nativeMain/kotlin/androidx/compose/foundation/text/input/internal/selection/TextFieldSelectionState.native.kt

@@ -15,7 +15,10 @@ import kotlinx.coroutines.CoroutineScope
 /**
  Byte-close mirror of upstream macosMain — desktop tap / selection gestures
  delegate to the default helpers baked into TextFieldSelectionState.
- addBasicTextFieldTextContextMenuComponents = no-op (TODO CMP-7819).
+ addBasicTextFieldTextContextMenuComponents is a NO-OP by design: it belongs to
+ the NEW text-context-menu API (ComposeFoundationFlags.isNewContextMenuEnabled),
+ which is false on native. The working right-click Cut/Copy/Paste/SelectAll menu
+ goes through the vendored LEGACY CommonContextMenuArea path instead.
  ClipboardPasteState uses our project Clipboard's plaintext presence — no
  NSPasteboard access on native.
 */

compose/foundation/foundation/src/nativeMain/kotlin/androidx/compose/foundation/text/selection/SelectionActuals.native.kt

@@ -36,9 +36,11 @@ internal actual fun isCopyKeyEvent(keyEvent: KeyEvent): Boolean =
 /** No selection magnifier on desktop — mobile-only affordance. */
 internal actual fun Modifier.selectionMagnifier(manager: SelectionManager): Modifier = this
 
-/** Desktop text-context-menu doesn't add SelectionContainer-specific
-   items yet. TODO(CMP-7819): wire the paste-into-selection / clear
-   / select-all extras through here when the toolbar lands. */
+/** NO-OP by design: this seam belongs to the NEW text-context-menu API
+   (ComposeFoundationFlags.isNewContextMenuEnabled), which is false on native, so
+   it's never reached. The working SelectionContainer right-click menu (Copy /
+   SelectAll) goes through the vendored LEGACY CommonContextMenuArea path via
+   SelectionManager.contextMenuBuilder. */
 internal actual fun Modifier.addSelectionContainerTextContextMenuComponents(
 	selectionManager: SelectionManager
 ): Modifier = this

compose/foundation/foundation/src/nativeMain/kotlin/androidx/compose/foundation/text/selection/TextFieldSelectionManager.native.kt

@@ -20,7 +20,11 @@ internal actual fun TextFieldSelectionManager.isSelectionHandleInVisibleBound(
 	isStartHandle: Boolean,
 ): Boolean = isSelectionHandleInVisibleBoundDefault(isStartHandle)
 
-// TODO(CMP-7819): wire text-field context-menu components when the desktop toolbar lands.
+// NO-OP by design: this seam belongs to the NEW text-context-menu API
+// (ComposeFoundationFlags.isNewContextMenuEnabled = false on native), so it's
+// unreachable. The working legacy-field right-click menu goes through the vendored
+// CommonContextMenuArea path (TextFieldSelectionManager.contextMenuBuilder → Cut /
+// Copy / Paste / SelectAll).
 internal actual fun Modifier.addBasicTextFieldTextContextMenuComponents(
 	manager: TextFieldSelectionManager,
 	coroutineScope: CoroutineScope,

compose/foundation/foundation/src/nativeMain/kotlin/androidx/compose/foundation/v2/Scrollbar.skiko.kt

@@ -0,0 +1,509 @@
+// VENDOR-BASE: compose/foundation/foundation/src/skikoMain/kotlin/androidx/compose/foundation/v2/Scrollbar.skiko.kt @ v1.12.0-beta03+dev4483
+// MANUAL VENDOR: expect fun runBlockingIfPossible inlined to runBlocking (flat native source set can't hold expect+actual together).
+// Also carries the K2 @file:Suppress below (same as sync.py injects into src/vendor) so the native metadata compile / Windows publish accepts the orphaned JVM annotation.
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+@file:Suppress("OPTIONAL_DECLARATION_USAGE_IN_NON_COMMON_SOURCE", "LESS_VISIBLE_TYPE_ACCESS_IN_INLINE")
+@file:JvmName("Scrollbar_desktopKt")
+
+package androidx.compose.foundation.v2
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.ScrollState
+import androidx.compose.foundation.gestures.Orientation
+import androidx.compose.foundation.gestures.scrollBy
+import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.foundation.lazy.grid.LazyGridItemInfo
+import androidx.compose.foundation.lazy.grid.LazyGridState
+import androidx.compose.foundation.text.TextFieldScrollState
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.geometry.Offset
+import kotlin.js.JsName
+import kotlin.jvm.JvmName
+import kotlin.math.abs
+import kotlin.math.roundToInt
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.CoroutineStart
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+
+/**
+ * Defines how to scroll the scrollable component and how to display a scrollbar for it.
+ *
+ * The values of this interface are typically in pixels, but do not have to be.
+ * It's possible to create an adapter with any scroll range of `Double` values.
+ */
+interface ScrollbarAdapter {
+
+    // We use `Double` values here in order to allow scrolling both very large (think LazyList with
+    // millions of items) and very small (think something whose natural coordinates are less than 1)
+    // content.
+
+    /**
+     * Scroll offset of the content inside the scrollable component.
+     *
+     * For example, a value of `100` could mean the content is scrolled by 100 pixels from the
+     * start.
+     */
+    val scrollOffset: Double
+
+    /**
+     * The size of the scrollable content, on the scrollable axis.
+     */
+    val contentSize: Double
+
+    /**
+     * The size of the viewport, on the scrollable axis.
+     */
+    val viewportSize: Double
+
+    /**
+     * Instantly jump to [scrollOffset].
+     *
+     * @param scrollOffset target offset to jump to, value will be coerced to the valid
+     * scroll range.
+     */
+    suspend fun scrollTo(scrollOffset: Double)
+
+}
+
+/**
+ * The maximum scroll offset of the scrollable content.
+ */
+val ScrollbarAdapter.maxScrollOffset: Double
+    get() = (contentSize - viewportSize).coerceAtLeast(0.0)
+
+internal class ScrollableScrollbarAdapter(
+    private val scrollState: ScrollState
+) : ScrollbarAdapter {
+
+    override val scrollOffset: Double get() = scrollState.value.toDouble()
+
+    override suspend fun scrollTo(scrollOffset: Double) {
+        scrollState.scrollTo(scrollOffset.roundToInt())
+    }
+
+    override val contentSize: Double
+        // This isn't strictly correct, as the actual content can be smaller
+        // than the viewport when scrollState.maxValue is 0, but the scrollbar
+        // doesn't really care as long as contentSize <= viewportSize; it's
+        // just not showing itself
+        get() = scrollState.maxValue + viewportSize
+
+    override val viewportSize: Double
+        get() = scrollState.viewportSize.toDouble()
+
+}
+
+/**
+ * Base class for [LazyListScrollbarAdapter] and [LazyGridScrollbarAdapter],
+ * and in the future maybe other lazy widgets that lay out their content in lines.
+ */
+internal abstract class LazyLineContentAdapter: ScrollbarAdapter {
+
+    // Implement the adapter in terms of "lines", which means either rows,
+    // (for a vertically scrollable widget) or columns (for a horizontally
+    // scrollable one).
+    // For LazyList this translates directly to items; for LazyGrid, it
+    // translates to rows/columns of items.
+
+    class VisibleLine(
+        val index: Int,
+        val offset: Int
+    )
+
+    /**
+     * Return the first visible line, if any.
+     */
+    protected abstract fun firstVisibleLine(): VisibleLine?
+
+    /**
+     * Return the total number of lines.
+     */
+    protected abstract fun totalLineCount(): Int
+
+    /**
+     * The sum of content padding (before+after) on the scrollable axis.
+     */
+    protected abstract fun contentPadding(): Int
+
+    /**
+     * Scroll immediately to the given line, and offset it by [scrollOffset] pixels.
+     */
+    protected abstract suspend fun snapToLine(lineIndex: Int, scrollOffset: Int)
+
+    /**
+     * Scroll from the current position by the given amount of pixels.
+     */
+    protected abstract suspend fun scrollBy(value: Float)
+
+    /**
+     * Return the average size (on the scrollable axis) of the visible lines.
+     */
+    protected abstract fun averageVisibleLineSize(): Double
+
+    /**
+     * The spacing between lines.
+     */
+    protected abstract val lineSpacing: Int
+
+    @JsName("averageVisibleLineSizeProperty")
+    private val averageVisibleLineSize by derivedStateOf {
+        if (totalLineCount() == 0)
+            0.0
+        else
+            averageVisibleLineSize()
+    }
+
+    private val averageVisibleLineSizeWithSpacing get() = averageVisibleLineSize + lineSpacing
+
+    override val scrollOffset: Double
+        get() {
+            val firstVisibleLine = firstVisibleLine()
+            return if (firstVisibleLine == null)
+                0.0
+            else
+                firstVisibleLine.index * averageVisibleLineSizeWithSpacing - firstVisibleLine.offset
+        }
+
+    override val contentSize: Double
+        get() {
+            val totalLineCount = totalLineCount()
+            return averageVisibleLineSize * totalLineCount +
+                lineSpacing * (totalLineCount - 1).coerceAtLeast(0) +
+                contentPadding()
+        }
+
+    override suspend fun scrollTo(scrollOffset: Double) {
+        val distance = scrollOffset - this@LazyLineContentAdapter.scrollOffset
+
+        // if we scroll less than viewport we need to use scrollBy function to avoid
+        // undesirable scroll jumps (when an item size is different)
+        //
+        // if we scroll more than viewport we should immediately jump to this position
+        // without recreating all items between the current and the new position
+        if (abs(distance) <= viewportSize) {
+            scrollBy(distance.toFloat())
+        } else {
+            snapTo(scrollOffset)
+        }
+    }
+
+    private suspend fun snapTo(scrollOffset: Double) {
+        val scrollOffsetCoerced = scrollOffset.coerceIn(0.0, maxScrollOffset)
+
+        val index = (scrollOffsetCoerced / averageVisibleLineSizeWithSpacing)
+            .toInt()
+            .coerceAtLeast(0)
+            .coerceAtMost(totalLineCount() - 1)
+
+        val offset = (scrollOffsetCoerced - index * averageVisibleLineSizeWithSpacing)
+            .toInt()
+            .coerceAtLeast(0)
+
+        snapToLine(lineIndex = index, scrollOffset = offset)
+    }
+
+}
+
+internal class LazyListScrollbarAdapter(
+    private val scrollState: LazyListState
+) : LazyLineContentAdapter() {
+
+    override val viewportSize: Double
+        get() = with(scrollState.layoutInfo) {
+            if (orientation == Orientation.Vertical)
+                viewportSize.height
+            else
+                viewportSize.width
+        }.toDouble()
+
+    /**
+     * A heuristic that tries to ignore the "currently stickied" header because it breaks the other
+     * computations in this adapter:
+     * - The currently stickied header always appears in the list of visible items, with its
+     *   regular index. This makes [firstVisibleLine] always return its index, even if the list has
+     *   been scrolled far beyond it.
+     * - [averageVisibleLineSize] calculates the average size in O(1) by assuming that items don't
+     *   overlap, and the stickied item breaks this assumption.
+     *
+     * Attempts to return the index into `visibleItemsInfo` of the first non-currently-stickied (it
+     * could be sticky, but not stickied to the top of the list right now) item, if there is one.
+     *
+     * Note that this heuristic breaks down if the sticky header covers the entire list, so that
+     * it's the only visible item for some portion of the scroll range. But there's currently no
+     * known better way to solve it, and it's a relatively unusual case.
+     */
+    private fun firstFloatingVisibleItemIndex() = with(scrollState.layoutInfo.visibleItemsInfo){
+        when (size) {
+            0 -> null
+            1 -> 0
+            else -> {
+                val first = this[0]
+                val second = this[1]
+                // If either the indices or the offsets aren't continuous, then the first item is
+                // sticky, so we return 1
+                if ((first.index < second.index - 1) ||
+                    (first.offset + first.size + lineSpacing > second.offset))
+                    1
+                else
+                    0
+            }
+        }
+    }
+
+    override fun firstVisibleLine(): VisibleLine? {
+        val firstFloatingVisibleIndex = firstFloatingVisibleItemIndex() ?: return null
+        val firstFloatingItem = scrollState.layoutInfo.visibleItemsInfo[firstFloatingVisibleIndex]
+        return VisibleLine(
+            index = firstFloatingItem.index,
+            offset = firstFloatingItem.offset
+        )
+    }
+
+    override fun totalLineCount() = scrollState.layoutInfo.totalItemsCount
+
+    override fun contentPadding() = with(scrollState.layoutInfo){
+        beforeContentPadding + afterContentPadding
+    }
+
+    override suspend fun snapToLine(lineIndex: Int, scrollOffset: Int) {
+        scrollState.scrollToItem(lineIndex, scrollOffset)
+    }
+
+    override suspend fun scrollBy(value: Float) {
+        scrollState.scrollBy(value)
+    }
+
+    override fun averageVisibleLineSize() = with(scrollState.layoutInfo.visibleItemsInfo){
+        val firstFloatingIndex = firstFloatingVisibleItemIndex() ?: return@with 0.0
+        val first = this[firstFloatingIndex]
+        val last = last()
+        val count = size - firstFloatingIndex
+        (last.offset + last.size - first.offset - (count-1)*lineSpacing).toDouble() / count
+    }
+
+    override val lineSpacing get() = scrollState.layoutInfo.mainAxisItemSpacing
+
+}
+
+
+internal class LazyGridScrollbarAdapter(
+    private val scrollState: LazyGridState
+): LazyLineContentAdapter() {
+
+    override val viewportSize: Double
+        get() = with(scrollState.layoutInfo) {
+            if (orientation == Orientation.Vertical)
+                viewportSize.height
+            else
+                viewportSize.width
+        }.toDouble()
+
+    private val isVertical = scrollState.layoutInfo.orientation == Orientation.Vertical
+
+    private val unknownLine = with(LazyGridItemInfo) {
+        if (isVertical) UnknownRow else UnknownColumn
+    }
+
+    private fun LazyGridItemInfo.line() = if (isVertical) row else column
+
+    private fun LazyGridItemInfo.mainAxisSize() = with (size) {
+        if (isVertical) height else width
+    }
+
+    private fun LazyGridItemInfo.mainAxisOffset() = with(offset) {
+        if (isVertical) y else x
+    }
+
+    private fun lineOfIndex(index: Int) = index / scrollState.slotsPerLine
+
+    private fun indexOfFirstInLine(line: Int) = line * scrollState.slotsPerLine
+
+    override fun firstVisibleLine(): VisibleLine? {
+        return scrollState.layoutInfo.visibleItemsInfo
+            .firstOrNull { it.line() != unknownLine } // Skip exiting items
+            ?.let { firstVisibleItem ->
+                VisibleLine(
+                    index = firstVisibleItem.line(),
+                    offset = firstVisibleItem.mainAxisOffset()
+                )
+            }
+    }
+
+    override fun totalLineCount(): Int{
+        val itemCount = scrollState.layoutInfo.totalItemsCount
+        return if (itemCount == 0)
+            0
+        else
+            lineOfIndex(itemCount - 1) + 1
+    }
+
+    override fun contentPadding() = with(scrollState.layoutInfo){
+        beforeContentPadding + afterContentPadding
+    }
+
+    override suspend fun snapToLine(lineIndex: Int, scrollOffset: Int) {
+        scrollState.scrollToItem(
+            index = indexOfFirstInLine(lineIndex),
+            scrollOffset = scrollOffset
+        )
+    }
+
+    override suspend fun scrollBy(value: Float) {
+        scrollState.scrollBy(value)
+    }
+
+    private val lineIsKnown = { itemInfo: LazyGridItemInfo -> itemInfo.line() != unknownLine }
+
+    override fun averageVisibleLineSize(): Double {
+        val visibleItemsInfo = scrollState.layoutInfo.visibleItemsInfo
+
+        // First and last visible, non-exiting LazyGridItemInfo
+        val first = visibleItemsInfo.firstOrNull(lineIsKnown) ?: return 0.0
+        val last = visibleItemsInfo.last(lineIsKnown)
+
+        // Compute the size (e.g. height for vertical grid) of the last line
+        val lastLine = last.line()
+        val lastLineSize = visibleItemsInfo
+            .asReversed()
+            .asSequence()
+            .filter(lineIsKnown)
+            .takeWhile { it.line() == lastLine }
+            .maxOf { it.mainAxisSize() }
+
+        val lineCount = last.line() - first.line() + 1
+        val lineSpacingSum = (lineCount - 1) * lineSpacing
+        return (
+            last.mainAxisOffset() + lastLineSize - first.mainAxisOffset() - lineSpacingSum
+            ).toDouble() / lineCount
+    }
+
+    override val lineSpacing get() = scrollState.layoutInfo.mainAxisItemSpacing
+
+}
+
+@OptIn(ExperimentalFoundationApi::class)
+internal class TextFieldScrollbarAdapter(
+    private val scrollState: TextFieldScrollState
+): ScrollbarAdapter {
+
+    override val scrollOffset: Double
+        get() = scrollState.offset.toDouble()
+
+    override val contentSize: Double
+        get() = scrollState.maxOffset + viewportSize
+
+    override val viewportSize: Double
+        get() = scrollState.viewportSize.toDouble()
+
+    override suspend fun scrollTo(scrollOffset: Double) {
+        scrollState.offset = scrollOffset.toFloat().coerceIn(0f, scrollState.maxOffset)
+    }
+
+}
+
+internal class SliderAdapter(
+    val adapter: ScrollbarAdapter,
+    private val trackSize: Int,
+    private val minHeight: Float,
+    private val reverseLayout: Boolean,
+    private val isVertical: Boolean,
+    private val coroutineScope: CoroutineScope
+) {
+
+    private val contentSize get() = adapter.contentSize
+    private val visiblePart: Double
+        get() {
+            val contentSize = contentSize
+            return if (contentSize == 0.0)
+                1.0
+            else
+                (adapter.viewportSize / contentSize).coerceAtMost(1.0)
+        }
+
+    val thumbSize
+        get() = (trackSize * visiblePart).coerceAtLeast(minHeight.toDouble())
+
+    private val scrollScale: Double
+        get() {
+            val extraScrollbarSpace = trackSize - thumbSize
+            val extraContentSpace = adapter.maxScrollOffset  // == contentSize - viewportSize
+            return if (extraContentSpace == 0.0) 1.0 else extraScrollbarSpace / extraContentSpace
+        }
+
+    private val rawPosition: Double
+        get() = scrollScale * adapter.scrollOffset
+
+    val position: Double
+        get() = if (reverseLayout) trackSize - thumbSize - rawPosition else rawPosition
+
+    val bounds get() = position..position + thumbSize
+
+    // How much of the current drag was ignored because we've reached the end of the scrollbar area
+    private var unscrolledDragDistance = 0.0
+
+    /** Called when the thumb dragging starts */
+    fun onDragStarted() {
+        unscrolledDragDistance = 0.0
+    }
+
+    private suspend fun setPosition(value: Double) {
+        val rawPosition = if (reverseLayout) {
+            trackSize - thumbSize - value
+        } else {
+            value
+        }
+        adapter.scrollTo(rawPosition / scrollScale)
+    }
+
+    private val dragMutex = Mutex()
+
+    /** Called on every movement while dragging the thumb */
+    fun onDragDelta(offset: Offset) {
+        coroutineScope.launch(start = CoroutineStart.UNDISPATCHED) {
+            // Mutex is used to ensure that all earlier drag deltas were applied
+            // before calculating a new raw position
+            dragMutex.withLock {
+                val dragDelta = if (isVertical) offset.y else offset.x
+                val maxScrollPosition = adapter.maxScrollOffset * scrollScale
+                val currentPosition = position
+                val targetPosition =
+                    (currentPosition + dragDelta + unscrolledDragDistance).coerceIn(
+                        0.0,
+                        maxScrollPosition
+                    )
+                val sliderDelta = targetPosition - currentPosition
+
+                // Have to add to position for smooth content scroll if the items are of different size
+                val newPos = position + sliderDelta
+                setPosition(newPos)
+                unscrolledDragDistance += dragDelta - sliderDelta
+            }
+        }
+    }
+
+}
+
+
+// Because k/js and k/wasm don't have runBlocking. This port targets only
+// native desktop (macos/linux/mingw), which all have runBlocking, so the
+// upstream expect/actual is inlined here — our flat native source set can't
+// hold the expect (in this .skiko.kt) and its actual in the same set.
+internal fun runBlockingIfPossible(block: suspend CoroutineScope.() -> Unit) =
+	kotlinx.coroutines.runBlocking(block = block)

compose/foundation/foundation/src/nativeMain/kotlin/com/compose/sdl/icons/IconFontIcon.kt

@@ -25,7 +25,7 @@ import androidx.compose.ui.unit.sp
 
    The four Material Symbols variable-font axes (fill / weight / grade /
    opticalSize) come in via `fontVariationSettings`; use `MaterialIconAxes(…)`
-   to build the list. Skia honours the axes; SDL3_ttf 3.2 ignores them. */
+   to build the list. Skia honours the axes. */
 @Composable
 fun IconFontIcon(
 	codepoint: Int,

compose/material/material-ripple/api/material-ripple.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:material-ripple>
+// Library unique name: <com.bitsycore.compose.material:material-ripple>
 abstract interface androidx.compose.material.ripple/RippleTheme { // androidx.compose.material.ripple/RippleTheme|null[0]
     abstract fun defaultColor(androidx.compose.runtime/Composer?, kotlin/Int): androidx.compose.ui.graphics/Color // androidx.compose.material.ripple/RippleTheme.defaultColor|defaultColor(androidx.compose.runtime.Composer?;kotlin.Int){}[0]
     abstract fun rippleAlpha(androidx.compose.runtime/Composer?, kotlin/Int): androidx.compose.material.ripple/RippleAlpha // androidx.compose.material.ripple/RippleTheme.rippleAlpha|rippleAlpha(androidx.compose.runtime.Composer?;kotlin.Int){}[0]

compose/material/material-ripple/build.gradle.kts

@@ -13,8 +13,7 @@ plugins {
 	alias(libs.plugins.kotlin.plugin.compose)
 }
 
-// Skip mingwX64 on non-Windows hosts; see root build.gradle.kts.
-val vHostSupportsMingw: Boolean by rootProject.extra
+val vHostSupportsMingw = rootProject.extra["vHostSupportsMingw"] as Boolean
 
 kotlin {
 	linuxArm64()

compose/material3/material3/api/material3.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:material3>
+// Library unique name: <com.bitsycore.compose.material3:material3>
 open annotation class androidx.compose.material3/ExperimentalMaterial3Api : kotlin/Annotation { // androidx.compose.material3/ExperimentalMaterial3Api|null[0]
     constructor <init>() // androidx.compose.material3/ExperimentalMaterial3Api.<init>|<init>(){}[0]
 }

compose/material3/material3/build.gradle.kts

@@ -35,7 +35,7 @@ kotlin {
 				api(project(":animation-core"))
 				api(project(":material-ripple"))
 				// androidx.collection is used by material3 internals (MutableIntObjectMap, …).
-				// Already on the classpath via :core's runtime; declare here for clarity.
+				// Already on the classpath via :ui's runtime; declare here for clarity.
 				implementation("androidx.collection:collection:1.5.0")
 				// androidx.graphics.shapes.* — MaterialShapes (RoundedPolygon /
 				// Morph / CornerRounding) that WavyProgress / LoadingIndicator use.

compose/material3/material3/src/nativeMain/kotlin/androidx/compose/material3/internal/PlatformDateFormat.native.kt

@@ -13,10 +13,12 @@ import kotlinx.datetime.toLocalDateTime
 
 /**
  Upstream ships this via NSDateFormatter (darwinMain) or java.text.DateFormat
- (desktopMain). Neither is available for K/N on Linux/Windows, so we ship a
- minimal English-only stub that unblocks DatePicker + TimePicker compilation.
- Localization is TODO; format strings are matched via a small dispatcher on the
- subset of patterns material3 actually asks for.
+ (desktopMain). Neither is available for K/N on Linux/Windows, so this actual is
+ a cross-platform kotlinx-datetime formatter that HONOURS the requested
+ CLDR-style pattern / skeleton (so DatePicker/TimePicker headlines read
+ "Jul 29, 2026" / "July 2026" instead of a raw ISO date). Field VALUES are
+ localized by the requested TimeZone.UTC calendar; field NAMES (month / weekday)
+ stay English — full CLDR name localization needs ICU data we don't bundle.
 */
 @OptIn(ExperimentalTime::class)
 internal actual class PlatformDateFormat actual constructor(
@@ -33,13 +35,13 @@ internal actual class PlatformDateFormat actual constructor(
 		utcTimeMillis: Long,
 		pattern: String,
 		cache: MutableMap<String, Any>,
-	): String = defaultFormat(utcTimeMillis)
+	): String = formatPattern(utcTimeMillis, pattern)
 
 	actual fun formatWithSkeleton(
 		utcTimeMillis: Long,
 		skeleton: String,
 		cache: MutableMap<String, Any>,
-	): String = defaultFormat(utcTimeMillis)
+	): String = formatPattern(utcTimeMillis, skeletonToPattern(skeleton))
 
 	actual fun parse(
 		date: String,
@@ -64,11 +66,91 @@ internal actual class PlatformDateFormat actual constructor(
 
 	actual fun is24HourFormat(): Boolean = true
 
-	private fun defaultFormat(utcTimeMillis: Long): String {
-		val vInstant = Instant.fromEpochMilliseconds(utcTimeMillis)
-		val vDt = vInstant.toLocalDateTime(TimeZone.UTC)
-		return "${vDt.year}-${vDt.monthNumber.pad2()}-${vDt.dayOfMonth.pad2()}"
+	// ============
+	//  Pattern / skeleton formatting
+
+	/** Format [utcTimeMillis] against a CLDR-style [pattern] (y/M/d/E/H/h/m/s/a
+	   field runs; `'...'` quotes literal text). */
+	private fun formatPattern(utcTimeMillis: Long, pattern: String): String {
+		val dt = Instant.fromEpochMilliseconds(utcTimeMillis).toLocalDateTime(TimeZone.UTC)
+		val out = StringBuilder()
+		var i = 0
+		while (i < pattern.length) {
+			val c = pattern[i]
+			when {
+				c == '\'' -> {
+					// Quoted literal; '' is an escaped single quote.
+					var j = i + 1
+					while (j < pattern.length && pattern[j] != '\'') { out.append(pattern[j]); j++ }
+					i = j + 1
+				}
+				c.isLetter() -> {
+					var j = i
+					while (j < pattern.length && pattern[j] == c) j++
+					out.append(formatField(c, j - i, dt))
+					i = j
+				}
+				else -> { out.append(c); i++ }
+			}
+		}
+		return out.toString()
+	}
+
+	private fun formatField(field: Char, count: Int, dt: kotlinx.datetime.LocalDateTime): String = when (field) {
+		'y' -> if (count == 2) (dt.year % 100).pad2() else dt.year.toString()
+		'M' -> when {
+			count >= 4 -> MONTH_NAMES[dt.monthNumber - 1]
+			count == 3 -> MONTH_ABBR[dt.monthNumber - 1]
+			count == 2 -> dt.monthNumber.pad2()
+			else -> dt.monthNumber.toString()
+		}
+		'd' -> if (count >= 2) dt.dayOfMonth.pad2() else dt.dayOfMonth.toString()
+		'E' -> {
+			val idx = dt.dayOfWeek.ordinal // kotlinx DayOfWeek: MONDAY=0 → matches weekdayNames order
+			if (count >= 4) weekdayNames[idx].first else weekdayNames[idx].second
+		}
+		'H' -> if (count >= 2) dt.hour.pad2() else dt.hour.toString()
+		'h' -> {
+			val h12 = ((dt.hour + 11) % 12) + 1
+			if (count >= 2) h12.pad2() else h12.toString()
+		}
+		'm' -> if (count >= 2) dt.minute.pad2() else dt.minute.toString()
+		's' -> if (count >= 2) dt.second.pad2() else dt.second.toString()
+		'a' -> if (dt.hour < 12) "AM" else "PM"
+		else -> "" // unsupported field: drop rather than echo raw pattern letters
+	}
+
+	/** Map the CLDR skeletons material3 requests (unordered field sets) to concrete
+	   English patterns. Unknown skeletons fall back to the skeleton itself, which
+	   still renders the correct field VALUES (just without separators). */
+	private fun skeletonToPattern(skeleton: String): String = when (skeleton) {
+		"yMMMM" -> "MMMM yyyy"
+		"yMMMMd", "yMMMMdd" -> "MMMM d, yyyy"
+		"yMMMd" -> "MMM d, yyyy"
+		"yMMM" -> "MMM yyyy"
+		"yMMMMEEEEd" -> "EEEE, MMMM d, yyyy"
+		"yMMMEd" -> "EEE, MMM d, yyyy"
+		"MMMMEEEEd" -> "EEEE, MMMM d"
+		"MMMMd" -> "MMMM d"
+		"MMMd" -> "MMM d"
+		"MMMEd" -> "EEE, MMM d"
+		"y" -> "yyyy"
+		"MMMM" -> "MMMM"
+		"Hm" -> "HH:mm"
+		"hm", "hma" -> "h:mm a"
+		else -> skeleton
 	}
 
 	private fun Int.pad2(): String = if (this < 10) "0$this" else "$this"
+
+	private companion object {
+		val MONTH_NAMES = listOf(
+			"January", "February", "March", "April", "May", "June",
+			"July", "August", "September", "October", "November", "December",
+		)
+		val MONTH_ABBR = listOf(
+			"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+			"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
+		)
+	}
 }

compose/sdl/window/api/window.klib.api

@@ -1,9 +0,0 @@
-// Klib ABI Dump
-// Targets: [linuxArm64, linuxX64, macosArm64, mingwX64]
-// Rendering settings:
-// - Signature version: 2
-// - Show manifest properties: true
-// - Show declarations: true
-
-// Library unique name: <com.bitsycore.compose.native:window>
-final fun com.compose.desktop.native/nativeComposeWindow(kotlin/String = ..., kotlin/Int = ..., kotlin/Int = ..., com.compose.desktop.native/GpuMode = ..., kotlin/Function2<com.compose.desktop.native/RenderBackend, kotlin/Int, kotlin/Boolean>? = ..., kotlin/Function3<com.compose.desktop.native/ComposeWindowScope, androidx.compose.runtime/Composer, kotlin/Int, kotlin/Unit>) // com.compose.desktop.native/nativeComposeWindow|nativeComposeWindow(kotlin.String;kotlin.Int;kotlin.Int;com.compose.desktop.native.GpuMode;kotlin.Function2<com.compose.desktop.native.RenderBackend,kotlin.Int,kotlin.Boolean>?;kotlin.Function3<com.compose.desktop.native.ComposeWindowScope,androidx.compose.runtime.Composer,kotlin.Int,kotlin.Unit>){}[0]

compose/ui/ui-backhandler/api/ui-backhandler.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:ui-backhandler>
+// Library unique name: <com.bitsycore.compose.ui:ui-backhandler>
 final class androidx.compose.ui.backhandler/BackEventCompat { // androidx.compose.ui.backhandler/BackEventCompat|null[0]
     constructor <init>(kotlin/Float, kotlin/Float, kotlin/Float, kotlin/Int) // androidx.compose.ui.backhandler/BackEventCompat.<init>|<init>(kotlin.Float;kotlin.Float;kotlin.Float;kotlin.Int){}[0]
 

compose/ui/ui-geometry/api/ui-geometry.klib.api

@@ -5,7 +5,7 @@
 // - Show manifest properties: true
 // - Show declarations: true
 
-// Library unique name: <com.bitsycore.compose.sdl:ui-geometry>
+// Library unique name: <com.bitsycore.compose.ui:ui-geometry>
 final class androidx.compose.ui.geometry/MutableRect { // androidx.compose.ui.geometry/MutableRect|null[0]
     constructor <init>(kotlin/Float, kotlin/Float, kotlin/Float, kotlin/Float) // androidx.compose.ui.geometry/MutableRect.<init>|<init>(kotlin.Float;kotlin.Float;kotlin.Float;kotlin.Float){}[0]
 

compose/ui/ui-graphics/build.gradle.kts

@@ -0,0 +1,75 @@
+// :ui-graphics — androidx.compose.ui.graphics.* split out of :ui (upstream layout).
+// Canvas / Paint / Path / Brush / Color / ImageBitmap / Shader / GraphicsLayer +
+// the Skia actuals (SkiaBackedCanvas, SkiaImageCache, …). SDL-free — image bytes
+// come through the composeResourceReader seam, so it depends only on skiko +
+// the low ui primitives, NOT on :sdl-core.
+
+plugins {
+    alias(libs.plugins.kotlin.multiplatform)
+    alias(libs.plugins.kotlin.plugin.compose)
+    alias(libs.plugins.compose.multiplatform)
+}
+
+val vHostSupportsMingw = rootProject.extra["vHostSupportsMingw"] as Boolean
+
+kotlin {
+    linuxArm64()
+    linuxX64()
+    macosArm64()
+    if (vHostSupportsMingw) mingwX64()
+
+    applyDefaultHierarchyTemplate()
+
+    sourceSets {
+        commonMain {
+            kotlin.srcDir("src/vendor/common/kotlin")
+            dependencies {
+                api(project(":ui-geometry"))
+                api(project(":ui-unit"))
+                api(project(":ui-util"))
+                api("org.jetbrains.compose.runtime:runtime:${libs.versions.composeRuntime.get()}")
+                implementation(libs.kotlinx.coroutines.core)
+                // androidx.collection comes transitively via :ui-util (api).
+            }
+        }
+        nativeMain {
+            kotlin.srcDir("src/vendor/native/kotlin")
+        }
+
+        val skikoRendererMain = create("skikoRendererMain") {
+            dependsOn(nativeMain.get())
+            kotlin.srcDir("src/vendor/skikoRenderer/kotlin")
+            dependencies {
+                implementation(libs.skiko)
+            }
+        }
+        val skikoRendererMacosMain = create("skikoRendererMacosMain") { dependsOn(skikoRendererMain) }
+        val skikoRendererLinuxMain = create("skikoRendererLinuxMain") { dependsOn(skikoRendererMain) }
+        get("macosArm64Main").dependsOn(skikoRendererMacosMain)
+        get("linuxX64Main").dependsOn(skikoRendererLinuxMain)
+        get("linuxArm64Main").dependsOn(skikoRendererLinuxMain)
+
+        if (vHostSupportsMingw) {
+            val skikoRendererMingwSharedMain = create("skikoRendererMingwSharedMain") {
+                dependsOn(nativeMain.get())
+                kotlin.srcDir("src/skikoRendererMain/kotlin")
+                kotlin.srcDir("src/vendor/skikoRenderer/kotlin")
+                dependencies {
+                    implementation("com.bitsycore.skiko:skiko:${providers.gradleProperty("skikoMingwVersion").getOrElse("0.150.1-mingw.1")}")
+                }
+            }
+            val skikoRendererMingwMain = create("skikoRendererMingwMain") { dependsOn(skikoRendererMingwSharedMain) }
+            get("mingwX64Main").dependsOn(skikoRendererMingwMain)
+        }
+    }
+
+    compilerOptions {
+        freeCompilerArgs.addAll(
+            "-Xcollection-literals",
+            "-Xexpect-actual-classes",
+            "-opt-in=kotlinx.cinterop.ExperimentalForeignApi",
+            "-opt-in=androidx.compose.ui.InternalComposeUiApi",
+            "-opt-in=androidx.compose.ui.ExperimentalComposeUiApi"
+        )
+    }
+}

compose/ui/ui-graphics/compose-fork.txt

@@ -0,0 +1,166 @@
+SET_REPO=https://github.com/JetBrains/compose-multiplatform-core@<COMPOSE_CORE_REF>
+SET_FOLDER=compose/ui/ui-graphics/src
+
+commonMain/kotlin/ -> src/vendor/common/kotlin/
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Bezier.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Bezier.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/BlendMode.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/BlendMode.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Brush.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Brush.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Canvas.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Canvas.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/ClipOp.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/ClipOp.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Color.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Color.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/ColorFilter.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/ColorFilter.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/ColorMatrix.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/ColorMatrix.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Degrees.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Degrees.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/ExperimentalGraphicsApi.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/ExperimentalGraphicsApi.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/FilterQuality.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/FilterQuality.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Float16.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Float16.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/GraphicsContext.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/GraphicsContext.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/ImageBitmap.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/ImageBitmap.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/InlineClassHelper.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/InlineClassHelper.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Interpolatable.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Interpolatable.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/IntervalTree.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/IntervalTree.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/LayerOutsets.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/LayerOutsets.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Matrix.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Matrix.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Outline.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Outline.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Paint.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Paint.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PaintingStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PaintingStyle.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Path.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Path.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathEffect.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathEffect.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathFillType.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathFillType.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathGeometry.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathGeometry.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathHitTester.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathHitTester.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathIterator.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathIterator.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathMeasure.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathMeasure.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathOperation.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathOperation.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathSegment.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathSegment.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PathSvg.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PathSvg.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PixelMap.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PixelMap.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/PointMode.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/PointMode.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/RectangleShape.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/RectangleShape.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/RenderEffect.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/RenderEffect.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Shader.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Shader.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Shadow.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Shadow.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Shape.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Shape.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/StrokeCap.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/StrokeCap.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/StrokeJoin.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/StrokeJoin.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/TileMode.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/TileMode.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/VertexMode.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/VertexMode.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/Vertices.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/Vertices.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/Adaptation.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/Adaptation.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/ColorModel.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/ColorModel.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/ColorSpace.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/ColorSpace.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/ColorSpaces.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/ColorSpaces.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/Connector.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/Connector.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/Illuminant.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/Illuminant.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/Lab.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/Lab.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/Oklab.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/Oklab.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/RenderIntent.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/RenderIntent.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/Rgb.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/Rgb.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/TransferParameters.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/TransferParameters.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/WhitePoint.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/WhitePoint.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/colorspace/Xyz.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/colorspace/Xyz.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/drawscope/CanvasDrawScope.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/drawscope/CanvasDrawScope.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/drawscope/ContentDrawScope.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/drawscope/ContentDrawScope.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/drawscope/DrawContext.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/drawscope/DrawContext.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/drawscope/DrawScope.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/drawscope/DrawScope.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/drawscope/DrawScopeMarker.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/drawscope/DrawScopeMarker.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/drawscope/DrawTransform.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/drawscope/DrawTransform.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/drawscope/EmptyCanvas.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/drawscope/EmptyCanvas.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/internal/JvmDefaultWithCompatibility.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/internal/JvmDefaultWithCompatibility.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/layer/ChildLayerDependenciesTracker.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/layer/ChildLayerDependenciesTracker.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/layer/CompositingStrategy.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/layer/CompositingStrategy.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/layer/GraphicsLayer.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/layer/GraphicsLayer.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/painter/BitmapPainter.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/painter/BitmapPainter.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/painter/BrushPainter.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/painter/BrushPainter.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/painter/ColorPainter.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/painter/ColorPainter.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/painter/Painter.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/painter/Painter.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/shadow/Blur.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/shadow/Blur.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/shadow/DropShadowPainter.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/shadow/DropShadowPainter.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/shadow/InnerShadowPainter.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/shadow/InnerShadowPainter.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/shadow/Shadow.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/shadow/Shadow.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/shadow/ShadowContext.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/shadow/ShadowContext.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/shadow/ShadowRenderer.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/shadow/ShadowRenderer.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/vector/FastFloatParser.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/vector/FastFloatParser.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/vector/PathBuilder.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/vector/PathBuilder.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/vector/PathNode.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/vector/PathNode.kt
+#     | commonMain/kotlin/androidx/compose/ui/graphics/vector/PathParser.kt -> src/vendor/common/kotlin/androidx/compose/ui/graphics/vector/PathParser.kt
+
+nonJvmMain/kotlin/androidx/compose/ui/graphics/internal/JvmDefaultWithCompatibility.nonJvm.kt -> src/vendor/native/kotlin/androidx/compose/ui/graphics/internal/JvmDefaultWithCompatibility.native.kt
+
+skikoMain/kotlin/ -> src/vendor/skikoRenderer/kotlin/
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/BlendMode.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/BlendMode.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/ImageBitmap.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/ImageBitmap.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/Matrices.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/Matrices.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/Rects.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/Rects.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaBackedCanvas.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaBackedCanvas.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaBackedPaint.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaBackedPaint.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaBackedPath.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaBackedPath.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaBackedPathEffect.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaBackedPathEffect.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaBackedPathMeasure.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaBackedPathMeasure.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaBackedRenderEffect.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaBackedRenderEffect.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaColorFilter.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaColorFilter.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaGraphicsContext.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaGraphicsContext.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaImageAsset.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaImageAsset.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaPathIterator.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaPathIterator.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaShader.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaShader.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaTileMode.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaTileMode.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/SkiaVertexMode.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/SkiaVertexMode.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/layer/SkiaGraphicsLayer.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/layer/SkiaGraphicsLayer.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/graphics/shadow/Blur.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/graphics/shadow/Blur.skiko.kt
+# B6.1 (2026-07-16): un-refused — skiko leg adopts upstream graphics actuals.
+# SkiaBackedCanvas is then MANUAL-VENDORED (moved to src/skikoRendererMain, re-refused
+# below) to also implement the port Native* draw contracts. See RENDERER_TASKS.md B6.1.
+# B6.2: un-refused — skiko leg adopts upstream GraphicsLayer/GraphicsContext (real
+# skiko RenderNode) now the canvas is SkiaBackedCanvas. See RENDERER_TASKS.md B6.2.
+!skikoMain/kotlin/androidx/compose/ui/graphics/SkiaBackedCanvas.skiko.kt
+# B6.1: MANUAL-VENDORED (flattened toBitmap/putBytesInto expect-actuals — see the file).
+!skikoMain/kotlin/androidx/compose/ui/graphics/SkiaImageAsset.skiko.kt
+
+# >>> ---- DIAGNOSTIC GAPS ---- <<<<
+#   androidMain (28)
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidBlendMode.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidBlendMode.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidCanvas.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidCanvas.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidColor.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidColor.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidColorFilter.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidColorFilter.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidColorSpace.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidColorSpace.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidGraphicsContext.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidGraphicsContext.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidImageBitmap.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidImageBitmap.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidMatrixConversions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidMatrixConversions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidPaint.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidPaint.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidPath.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidPath.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidPathEffect.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidPathEffect.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidPathIterator.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidPathIterator.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidPathMeasure.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidPathMeasure.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidRenderEffect.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidRenderEffect.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidShader.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidShader.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidTileMode.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidTileMode.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/AndroidVertexMode.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/AndroidVertexMode.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/CanvasUtils.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/CanvasUtils.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/RectHelper.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/RectHelper.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/layer/AndroidGraphicsLayer.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/layer/AndroidGraphicsLayer.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/layer/GraphicsLayerV23.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/layer/GraphicsLayerV23.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/layer/GraphicsLayerV29.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/layer/GraphicsLayerV29.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/layer/GraphicsViewLayer.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/layer/GraphicsViewLayer.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/layer/LayerSnapshot.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/layer/LayerSnapshot.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/layer/view/PlaceholderHardwareCanvas.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/layer/view/PlaceholderHardwareCanvas.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/layer/view/ViewLayerContainer.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/layer/view/ViewLayerContainer.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/shadow/AndroidShadowContext.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/shadow/AndroidShadowContext.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/graphics/shadow/Blur.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/graphics/shadow/Blur.android.kt
+#   desktopMain (7)
+#     | desktopMain/kotlin/androidx/compose/ui/graphics/DesktopColorFilter.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/graphics/DesktopColorFilter.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/graphics/DesktopImageAsset.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/graphics/DesktopImageAsset.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/graphics/DesktopImageConverters.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/graphics/DesktopImageConverters.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/graphics/DesktopPath.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/graphics/DesktopPath.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/graphics/DesktopPathEffect.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/graphics/DesktopPathEffect.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/graphics/RenderEffect.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/graphics/RenderEffect.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/graphics/awt/AwtColor.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/graphics/awt/AwtColor.desktop.kt
+#   jvmAndAndroidMain (1)
+#     | jvmAndAndroidMain/kotlin/androidx/compose/ui/graphics/internal/JvmDefaultWithCompatibility.jvmAndroidAndroid.kt -> src/vendor/jvmAndAndroid/kotlin/androidx/compose/ui/graphics/internal/JvmDefaultWithCompatibility.jvmAndroidAndroid.kt
+#   nativeMain (1)
+#     | nativeMain/kotlin/androidx/compose/ui/graphics/NativeImageAsset.native.kt -> src/vendor/native/kotlin/androidx/compose/ui/graphics/NativeImageAsset.native.kt
+#   skikoExcludingWebMain (1)
+#     | skikoExcludingWebMain/kotlin/androidx/compose/ui/graphics/Actuals.skikoExcludingWeb.kt -> src/vendor/skikoExcludingWeb/kotlin/androidx/compose/ui/graphics/Actuals.skikoExcludingWeb.kt
+#   webMain (2)
+#     | webMain/kotlin/androidx/compose/ui/graphics/Actuals.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/graphics/Actuals.web.kt
+#     | webMain/kotlin/androidx/compose/ui/graphics/ImageAsset.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/graphics/ImageAsset.web.kt
+# <<< ---- DIAGNOSTIC GAPS ---- >>>>

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/graphics/DrawShape.kt

@@ -19,9 +19,9 @@ import androidx.compose.ui.unit.LayoutDirection
  * Internal helper invoked by the project's `BackgroundNode.draw()` body
  * (Phase 8 chain-driven draw). Resolves the [Shape] into a project
  * [Outline] and dispatches to the appropriate `DrawScope.drawXxx`. The
- * receiver [DrawScope] is the renderer's wrap scope (Skia or SDL3) —
- * any of its `drawRect / drawRoundRect / drawPath` calls becomes a
- * concrete paint operation on the backend canvas.
+ * receiver [DrawScope] is the Skia renderer's wrap scope — any of its
+ * `drawRect / drawRoundRect / drawPath` calls becomes a concrete paint
+ * operation on the backend canvas.
  *
  * Note `Shape.createOutline` is the upstream three-arg signature
  * (`size`, `layoutDirection`, `density`); project shapes implement it

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/graphics/GradientBridge.kt

@@ -16,11 +16,11 @@ import androidx.compose.ui.graphics.TileMode
 // LinearGradient / RadialGradient / SweepGradient field accessors
 // `internal`, which keeps `androidx.compose.ui.graphics.LinearGradient.colors`
 // etc. out of the public ABI. Sealed-class scope forces the concrete
-// gradient classes to live in `androidx.compose.ui.graphics`, but our
-// renderer-skia / renderer-sdl3 modules can't read the resulting `internal`
-// fields directly. The extensions below sit in :core (same module as the
-// internal fields, so the bodies CAN read them) and are themselves public,
-// so :renderer-skia / :renderer-sdl3 import them and reach gradient state
+// gradient classes to live in `androidx.compose.ui.graphics`, but the Skia
+// renderer code in skikoRendererMain can't read the resulting `internal`
+// fields directly. The extensions below sit in this module's commonMain (same
+// module as the internal fields, so the bodies CAN read them) and are
+// themselves public, so the renderer imports them and reaches gradient state
 // through them.
 
 // ============

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/graphics/NativeFinishableCanvas.kt

@@ -0,0 +1,16 @@
+package com.compose.sdl.graphics
+
+// ==================
+// MARK: NativeFinishableCanvas
+// ==================
+
+/**
+ A renderer canvas that must be flushed once drawing into it is done — some backends
+ batch geometry and only submit on flush; an offscreen canvas must flush before its
+ backing texture is read. Implemented by SkiaBackedCanvas (no-op — Skia save/restore
+ is balanced per call). Lets renderer-agnostic code (e.g. GraphicsLayer.toImageBitmap)
+ commit an offscreen render without knowing the concrete canvas type.
+*/
+interface NativeFinishableCanvas {
+	fun finish()
+}

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/graphics/NativePainterCanvas.kt

@@ -0,0 +1,29 @@
+package com.compose.sdl.graphics
+
+import com.compose.sdl.res.ResourceKind
+
+// ==================
+// MARK: NativePainterCanvas bridge
+// ==================
+
+/**
+ Image drawing bridge. Renderer Canvas backends (SkiaBackedCanvas) implement this
+ to paint a bundled resource by path + kind. [com.compose.sdl.res.ResourcePainter]
+ (an upstream `Painter` subclass in the res pipeline) casts the current Canvas to
+ this and calls drawNativePainter from inside its `Painter.onDraw()` — reached via
+ upstream `Modifier.paint(...)` (PainterModifier), which pre-scales the
+ destination size per ContentScale. So the painter always draws fill-bounds into
+ the given rect, and this seam carries no ui-layout (ContentScale) dependency —
+ keeping :ui-graphics free of :ui.
+*/
+interface NativePainterCanvas {
+	fun drawNativePainter(
+		inResourcePath: String,
+		inKind: ResourceKind,
+		inX: Float,
+		inY: Float,
+		inWidth: Float,
+		inHeight: Float,
+		inAlpha: Float,
+	)
+}

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/graphics/NativeShadowCanvas.kt

@@ -7,7 +7,7 @@ import androidx.compose.ui.graphics.Outline
 // MARK: NativeShadowCanvas (render bridge)
 // ==================
 
-/** Drop-shadow bridge, same shape as NativeTextCanvas / NativePainterCanvas:
+/** Drop-shadow bridge, same shape as NativePainterCanvas:
    the render nodes call it when a layer carries shadowElevation > 0
    (Modifier.shadow, m3 Surface tonal+shadow elevation). The outline is the
    layer's resolved shape in LAYER-LOCAL pixels — the canvas is already
@@ -15,9 +15,7 @@ import androidx.compose.ui.graphics.Outline
    paint BEFORE the layer's clip (it lives outside the bounds).
 
    Implementations:
-   - SkiaBackedCanvas — a real Gaussian blur MaskFilter on the outline.
-   - Sdl3Canvas — cached shadow tiles (Sdl3ShadowCache) blitted via 9-slice
-     (the SDL 2D renderer has no shader/blur primitive). */
+   - SkiaBackedCanvas — a real Gaussian blur MaskFilter on the outline. */
 interface NativeShadowCanvas {
 	fun drawDropShadow(
 		inOutline: Outline,

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/graphics/ShapeClipCanvas.kt

@@ -11,10 +11,10 @@ import androidx.compose.ui.geometry.RoundRect
  a rounded-rect / circle OUTLINE (not just its bounding box).
 
  The Skia backend does NOT implement this: Skia's `Canvas.clipPath` already
- clips to a rounded path natively. The SDL3 backend has no path-clip primitive
- (only a rectangular render clip), so `Sdl3Canvas` implements this by rendering
- the clipped subtree into an offscreen target and masking it to the rounded shape
- (lazily — see the pending-clip machinery there).
+ clips to a rounded path natively. This side-channel exists for any backend
+ that has no path-clip primitive (only a rectangular render clip) and must
+ emulate it by rendering the clipped subtree into an offscreen target and
+ masking it to the rounded shape.
 
  The render nodes check `canvas is NativeShapeClipCanvas` when a layer has an
  `Outline.Rounded` clip and route here; otherwise they fall back to `clipPath`. The pushed clip is scoped to the enclosing `Canvas.save()` /

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/res/PlatformEnv.kt

@@ -0,0 +1,26 @@
+package com.compose.sdl.res
+
+// ==================
+// MARK: Platform-environment seams
+// ==================
+
+/**
+ * System-environment seams the platform layer (the SDL module) installs at
+ * startup, so `:foundation` (`isSystemInDarkTheme`) and `:components-resources`
+ * (locale / theme resource qualifiers) can read them WITHOUT a dependency on the
+ * sdl3 cinterop — the cinterop lives in the SDL platform module, but these
+ * consumers sit below it. null until installed → callers fall back to the light
+ * theme / empty locale (the sensible headless default).
+ */
+
+/** True when the OS is in dark mode. Installed from SDL_GetSystemTheme. */
+var systemThemeIsDarkProvider: (() -> Boolean)? = null
+
+/** The OS preferred locale as (language, region) — e.g. ("fr", "FR"); either may
+   be empty. Installed from SDL_GetPreferredLocales. */
+var preferredLocaleProvider: (() -> Pair<String, String>)? = null
+
+/** OS preferred-locale BCP47 tags (language[-REGION]), most-preferred first —
+   backs androidx.compose.ui.text.intl Locale.current / LocaleList.current (in
+   :ui-text). Installed from SDL_GetPreferredLocales. */
+var preferredLocaleTagsProvider: (() -> List<String>)? = null

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/res/ResourceLoading.kt

@@ -34,8 +34,8 @@ fun resourceKindForPath(path: String): ResourceKind {
 // ==================
 
 /** Shared bridge the commonMain layout pass uses to size images and read raw
-   bytes. The active RenderBackend installs an implementation at startup
-   (parallel to currentTextMeasurer). Actual drawing is done by the renderer
+   bytes. The active RenderBackend installs an implementation at startup.
+   Actual drawing is done by the renderer
    directly off the LayoutNode painter leaf, reusing the backend's decode
    cache — so a decoded texture is created once and shared by measure + draw. */
 interface ImageLoader {
@@ -56,6 +56,13 @@ private val kFallbackImageLoader = object : ImageLoader {
 /** Installed by ComposeWindow from renderBackend.imageLoader. */
 var currentImageLoader: ImageLoader = kFallbackImageLoader
 
+/** Raw resource-bytes reader (reads an entry from the bundled data.kres). The
+   platform layer installs the impl (SDL's ResourceIO via SDL_GetBasePath); the
+   Skia font + image actuals read through this instead of the SDL loader directly,
+   so ui-graphics / ui-text carry no dependency on the sdl3 cinterop. null until
+   installed → callers treat that as "resource unavailable". */
+var composeResourceReader: ((String) -> ByteArray?)? = null
+
 // ==================
 // MARK: painterResource
 // ==================

compose/ui/ui-graphics/src/commonMain/kotlin/com/compose/sdl/res/ResourcePainter.kt

@@ -23,7 +23,7 @@ import com.compose.sdl.graphics.NativePainterCanvas
  the renderer, so this reduced type carries just the resource pointer.
 
  [onDraw] casts the current Canvas to [NativePainterCanvas] (implemented by
- Sdl3Canvas / SkiaCanvas) and delegates paint to the renderer's image cache.
+ SkiaBackedCanvas) and delegates paint to the renderer's image cache.
  If the Canvas doesn't implement NativePainterCanvas (offscreen layer capture
  for graphics-layer effects) the paint is skipped.
 */
@@ -45,8 +45,7 @@ class ResourcePainter internal constructor(
 			// translate + scaledSize, so we paint the resource FillBounds into the
 			// full DrawScope size. Alpha is threaded via applyAlpha.
 			(vCanvas as? NativePainterCanvas)?.drawNativePainter(
-				resourcePath, kind, 0f, 0f, size.width, size.height,
-				androidx.compose.ui.layout.ContentScale.FillBounds, fAlpha,
+				resourcePath, kind, 0f, 0f, size.width, size.height, fAlpha,
 			)
 		}
 	}

compose/ui/ui-graphics/src/nativeMain/kotlin/com/compose/sdl/graphics/GraphicsContextFactory.kt

@@ -11,4 +11,4 @@ import androidx.compose.ui.graphics.GraphicsContext
    (the createRenderBackend trick). SDL → the project ProjectGraphicsContext (record/
    replay via the SDL NativeRenderNode); Skia → upstream's SkiaGraphicsContext (owns a
    skiko RenderNodeContext). See RENDERER.md §4 (B2). */
-internal expect fun createGraphicsContext(): GraphicsContext
+expect fun createGraphicsContext(): GraphicsContext

compose/ui/ui-graphics/src/nativeMain/kotlin/com/compose/sdl/graphics/ImageDecode.kt

@@ -1,5 +1,6 @@
 package com.compose.sdl.graphics
 
+import androidx.compose.ui.geometry.Size
 import androidx.compose.ui.graphics.ImageBitmap
 
 // ==================
@@ -8,25 +9,41 @@ import androidx.compose.ui.graphics.ImageBitmap
 
 /** Decodes an ENCODED image (png / jpg / webp / bmp / gif / svg bytes) into a
    drawable [ImageBitmap]. The active renderer registers its implementation at
-   backend construction — the SDL backend goes through SDL3_image
-   (Sdl3EncodedImageDecoder), the Skia backend through Image.makeFromEncoded /
+   backend construction — the Skia backend goes through Image.makeFromEncoded /
    SVGDOM (SkiaEncodedImageDecoder). :components-resources' actuals share this
-   hook under BOTH renderers (its skikoRendererMain reuses the SDL actuals).
+   hook.
 
    Consumed by `ByteArray.toImageBitmap` / `SvgElement.toSvgPainter` so
    painterResource(Res.drawable.x) works without that module reaching into
    renderer internals. */
 interface EncodedImageDecoder {
 	fun decode(inBytes: ByteArray): ImageBitmap?
+
+	/** Intrinsic (viewport) size of an SVG document, or null if it can't be
+	   parsed. Used by the resolution-independent SvgPainter for layout. */
+	fun svgIntrinsicSize(inBytes: ByteArray): Size? = null
+
+	/** Rasterise an SVG at a specific PIXEL size (resolution-independent draw).
+	   Default falls back to the intrinsic-size [decode] for impls that don't
+	   support size-driven rendering. */
+	fun decodeSvgAt(inBytes: ByteArray, inWidthPx: Int, inHeightPx: Int): ImageBitmap? = decode(inBytes)
 }
 
 /** Volatile: written by the render backend on the main thread, read by the
    resources pipeline on Dispatchers.Default workers. */
 @kotlin.concurrent.Volatile
 var encodedImageDecoder: EncodedImageDecoder? = null
-	internal set
 
 /** Decode via the active renderer's registered decoder — null when no renderer
  *  has initialised yet or the bytes aren't a supported image. */
 fun decodeEncodedImageBitmap(inBytes: ByteArray): ImageBitmap? =
 	encodedImageDecoder?.decode(inBytes)
+
+/** Intrinsic size of an SVG document via the active decoder, or null. */
+fun svgIntrinsicSize(inBytes: ByteArray): Size? =
+	encodedImageDecoder?.svgIntrinsicSize(inBytes)
+
+/** Rasterise an SVG at [inWidthPx]×[inHeightPx] via the active decoder — the
+ *  resolution-independent draw path used by the resources SvgPainter. */
+fun decodeSvgAt(inBytes: ByteArray, inWidthPx: Int, inHeightPx: Int): ImageBitmap? =
+	encodedImageDecoder?.decodeSvgAt(inBytes, inWidthPx, inHeightPx)

compose/ui/ui-graphics/src/nativeMain/kotlin/com/compose/sdl/graphics/LayerTransformationMatrix.kt

@@ -16,7 +16,7 @@ import kotlin.math.abs
 
 // Builds the layer transform (translation / rotation / scale / camera about a
 // pivot) into [matrix]. Matches the skiko copy so hit-testing agrees across legs.
-internal fun prepareLayerTransformationMatrix(
+fun prepareLayerTransformationMatrix(
 	matrix: Matrix,
 	pivotX: Float,
 	pivotY: Float,

compose/ui/ui-graphics/src/skikoRendererMain/kotlin/androidx/compose/ui/graphics/SkiaBackedCanvas.skiko.kt

@@ -17,11 +17,11 @@
 // DERIVED (copy + edit) from compose-multiplatform-core -- MANUAL VENDOR, NON-IDEMPOTENT.
 // VENDOR-BASE: compose/ui/ui-graphics/src/skikoMain/kotlin/androidx/compose/ui/graphics/SkiaBackedCanvas.skiko.kt @ v1.12.0-beta03+dev4483
 // ONLY change vs upstream: this class also implements the port draw contracts
-// (NativeTextCanvas / NativePainterCanvas / NativeShadowCanvas / NativeFinishableCanvas) so
-// the port text engine (SkiaTextRenderer, P3.1 metrics) + resource-image cache + elevation
-// shadows keep working on the Skia leg, which now draws through THIS canvas instead of the
-// retired project SkiaCanvas. Bridged methods forward to `skiaLeafDrawer` using
-// `internalSkiaCanvas`. See RENDERER.md (B6.1, section 4).
+// (NativePainterCanvas / NativeShadowCanvas / NativeFinishableCanvas) so the
+// resource-image cache + elevation shadows keep working on the Skia renderer,
+// which draws through THIS canvas instead of the retired project SkiaCanvas.
+// Bridged methods forward to `skiaLeafDrawer` using `internalSkiaCanvas`.
+// See RENDERER.md (B6.1, section 4).
 
 package androidx.compose.ui.graphics
 
@@ -503,7 +503,6 @@ internal class SkiaBackedCanvas(
         inY: Float,
         inWidth: Float,
         inHeight: Float,
-        inContentScale: androidx.compose.ui.layout.ContentScale,
         inAlpha: Float,
     ) {
         val drawer = skiaLeafDrawer ?: return
@@ -515,7 +514,6 @@ internal class SkiaBackedCanvas(
             inY = inY,
             inW = inWidth,
             inH = inHeight,
-            inScale = inContentScale,
             inAlpha = inAlpha,
         )
     }

compose/ui/ui-graphics/src/skikoRendererMain/kotlin/com/compose/sdl/graphics/GraphicsContextFactory.skia.kt

@@ -10,4 +10,4 @@ import androidx.compose.ui.graphics.SkiaGraphicsContext
 /** The Skia leg uses upstream's SkiaGraphicsContext, which owns a skiko
    RenderNodeContext and creates upstream GraphicsLayer(skiko.RenderNode) instances.
    See RENDERER.md (B6.2, section 4). */
-internal actual fun createGraphicsContext(): GraphicsContext = SkiaGraphicsContext()
+actual fun createGraphicsContext(): GraphicsContext = SkiaGraphicsContext()

compose/ui/ui-graphics/src/skikoRendererMain/kotlin/com/compose/sdl/renderer/skia/GpuReadback.kt

@@ -18,7 +18,7 @@ import org.jetbrains.skia.Surface
    Returns null if anything along the way fails: the Surface may not yet
    exist (first frame), the GPU readback may fail, or bitmap.readPixels()
    may not be exposed in this Skiko build. */
-internal fun readBackBgra(inSurface: Surface?, inWidth: Int, inHeight: Int): Triple<Int, Int, ByteArray>? {
+fun readBackBgra(inSurface: Surface?, inWidth: Int, inHeight: Int): Triple<Int, Int, ByteArray>? {
     val vSurface = inSurface ?: return null
     if (inWidth <= 0 || inHeight <= 0) return null
     val vBitmap = Bitmap()

compose/ui/ui-graphics/src/skikoRendererMain/kotlin/com/compose/sdl/renderer/skia/SkiaImageCache.kt

@@ -0,0 +1,232 @@
+package com.compose.sdl.renderer.skia
+
+import androidx.compose.ui.geometry.isSpecified
+import com.compose.sdl.res.AndroidVectorToSvg
+import com.compose.sdl.res.ResourceKind
+import com.compose.sdl.res.composeResourceReader
+import kotlin.math.roundToInt
+import org.jetbrains.skia.Canvas
+import org.jetbrains.skia.Color
+import org.jetbrains.skia.Data
+import org.jetbrains.skia.Image
+import org.jetbrains.skia.Paint
+import org.jetbrains.skia.Rect
+import org.jetbrains.skia.Surface
+import org.jetbrains.skia.svg.SVGDOM
+
+// ==================
+// MARK: SkiaImageCache
+// ==================
+
+/** Decodes bundled image resources to org.jetbrains.skia.Image and caches them
+   by relative path; backs both the layout pass (intrinsicSize) and the
+   renderer's draw. Raster formats go through Image.makeFromEncoded; SVG and
+   the SVG produced from Android <vector> XML are rendered through SVGDOM into
+   an offscreen surface and snapshotted to an Image, so the draw path is the
+   same drawImageRect for every kind.
+
+   NOTE: this source set isn't compiled on the mingwX64 host, so it is built
+   only on macOS / Linux — keep it to the Skiko APIs already used elsewhere in
+   this module. */
+private const val MAX_CACHED_IMAGES = 256
+
+class SkiaImageCache {
+
+	// Bounded access-order LRU. Value is null when a decode failed — cached to
+	// avoid retrying each frame. Bounding + closing the least-recently-used image
+	// stops long-running apps that show many distinct runtime images
+	// (registerMemoryResource — e.g. downloaded PNGs) from growing image memory
+	// without limit (issue #2). On-screen images stay hot; an evicted one just
+	// re-decodes on next use.
+	private val fCache = LinkedHashMap<String, Image?>()
+
+	// SVG / Android-vector kinds are RESOLUTION-INDEPENDENT: instead of caching one
+	// intrinsic-size raster and letting drawImageRect upscale it (blurry when an icon
+	// is drawn larger than its intrinsic box), we re-rasterise the vector at the
+	// destination pixel size and cache that raster keyed by "path@WxH". Mirrors
+	// upstream's size-driven DrawCache for SVGPainter. Intrinsic dims are cached
+	// separately so the layout pass (intrinsicSize) doesn't force a raster.
+	private val fSvgRasterCache = LinkedHashMap<String, Image?>()
+	private val fSvgIntrinsic = HashMap<String, androidx.compose.ui.geometry.Size>()
+
+	fun intrinsicSize(inPath: String, inKind: ResourceKind): androidx.compose.ui.geometry.Size {
+		if (inKind == ResourceKind.Svg || inKind == ResourceKind.AndroidVector) {
+			return svgIntrinsicSize(inPath, inKind)
+		}
+		val vImg = get(inPath, inKind) ?: return androidx.compose.ui.geometry.Size.Unspecified
+		return androidx.compose.ui.geometry.Size(vImg.width.toFloat(), vImg.height.toFloat())
+	}
+
+	private fun get(inPath: String, inKind: ResourceKind): Image? {
+		if (fCache.containsKey(inPath)) {
+			// Re-insert to mark most-recently-used (LinkedHashMap keeps first =
+			// least-recently-used for eviction below).
+			val vExisting = fCache.remove(inPath)
+			fCache[inPath] = vExisting
+			return vExisting
+		}
+		val vImage = decode(inPath, inKind)
+		fCache[inPath] = vImage
+		if (fCache.size > MAX_CACHED_IMAGES) {
+			val vEldest = fCache.keys.firstOrNull()
+			if (vEldest != null) fCache.remove(vEldest)?.close()
+		}
+		return vImage
+	}
+
+	private fun decode(inPath: String, inKind: ResourceKind): Image? {
+		val vBytes = composeResourceReader?.invoke(inPath) ?: return null
+		return when (inKind) {
+			ResourceKind.Raster        -> runCatching { Image.makeFromEncoded(vBytes) }.getOrNull()
+			ResourceKind.Svg           -> rasterizeSvg(vBytes)
+			ResourceKind.AndroidVector -> rasterizeSvg(AndroidVectorToSvg.convert(vBytes.decodeToString()).encodeToByteArray())
+			ResourceKind.Raw           -> null
+		}
+	}
+
+	// ==================
+	// MARK: Draw
+	// ==================
+
+	/** Paints the resource into (inX, inY, inW, inH) applying contentScale +
+	   alpha. Alpha modulates via the paint colour's alpha channel (RGB is
+	   ignored for images without a colour filter). */
+	fun draw(
+		inCanvas: Canvas,
+		inPath: String,
+		inKind: ResourceKind,
+		inX: Float,
+		inY: Float,
+		inW: Float,
+		inH: Float,
+		inAlpha: Float,
+	) {
+		if (inW <= 0f || inH <= 0f) return
+		if (inKind == ResourceKind.Svg || inKind == ResourceKind.AndroidVector) {
+			drawSvg(inCanvas, inPath, inKind, inX, inY, inW, inH, inAlpha)
+			return
+		}
+		val vImg = get(inPath, inKind) ?: return
+		val vIw = vImg.width.toFloat()
+		val vIh = vImg.height.toFloat()
+		if (vIw <= 0f || vIh <= 0f) return
+
+		val vPaint = Paint()
+		vPaint.color = Color.makeARGB((inAlpha * 255f).toInt().coerceIn(0, 255), 255, 255, 255)
+
+		// Upstream PainterModifier pre-scales the destination per ContentScale, so
+		// draw fill-bounds into the given rect.
+		inCanvas.drawImageRect(vImg, Rect.makeWH(vIw, vIh), Rect.makeXYWH(inX, inY, inW, inH), vPaint)
+		vPaint.close()
+	}
+
+	// ==================
+	// MARK: Size-driven SVG / Android-vector
+	// ==================
+
+	/** Raw SVG bytes for the resource (Android-vector XML is converted first). */
+	private fun svgBytes(inPath: String, inKind: ResourceKind): ByteArray? {
+		val vRaw = composeResourceReader?.invoke(inPath) ?: return null
+		return if (inKind == ResourceKind.AndroidVector) {
+			runCatching { AndroidVectorToSvg.convert(vRaw.decodeToString()).encodeToByteArray() }.getOrNull()
+		} else {
+			vRaw
+		}
+	}
+
+	/** Intrinsic (viewport) size of the vector, parsed once and cached. */
+	private fun svgIntrinsicSize(inPath: String, inKind: ResourceKind): androidx.compose.ui.geometry.Size {
+		fSvgIntrinsic[inPath]?.let { return it }
+		val vBytes = svgBytes(inPath, inKind) ?: return androidx.compose.ui.geometry.Size.Unspecified
+		val vSize = runCatching {
+			val vDom = SVGDOM(Data.makeFromBytes(vBytes))
+			val vRoot = vDom.root
+			val vW = (vRoot?.width?.value ?: 0f).takeIf { it > 0f } ?: 100f
+			val vH = (vRoot?.height?.value ?: 0f).takeIf { it > 0f } ?: 100f
+			vDom.close()
+			androidx.compose.ui.geometry.Size(vW, vH)
+		}.getOrDefault(androidx.compose.ui.geometry.Size.Unspecified)
+		fSvgIntrinsic[inPath] = vSize
+		return vSize
+	}
+
+	private fun drawSvg(
+		inCanvas: Canvas, inPath: String, inKind: ResourceKind,
+		inX: Float, inY: Float, inW: Float, inH: Float, inAlpha: Float,
+	) {
+		val vWpx = inW.roundToInt().coerceAtLeast(1)
+		val vHpx = inH.roundToInt().coerceAtLeast(1)
+		val vKey = "$inPath@${vWpx}x$vHpx"
+		val vImg = if (fSvgRasterCache.containsKey(vKey)) {
+			val vExisting = fSvgRasterCache.remove(vKey)
+			fSvgRasterCache[vKey] = vExisting
+			vExisting
+		} else {
+			val vIntrinsic = svgIntrinsicSize(inPath, inKind)
+			val vBytes = svgBytes(inPath, inKind)
+			val vRaster = if (vBytes != null && vIntrinsic.isSpecified) {
+				rasterizeSvgAt(vBytes, vIntrinsic.width, vIntrinsic.height, vWpx, vHpx)
+			} else null
+			fSvgRasterCache[vKey] = vRaster
+			if (fSvgRasterCache.size > MAX_CACHED_IMAGES) {
+				fSvgRasterCache.keys.firstOrNull()?.let { fSvgRasterCache.remove(it)?.close() }
+			}
+			vRaster
+		} ?: return
+
+		val vPaint = Paint()
+		vPaint.color = Color.makeARGB((inAlpha * 255f).toInt().coerceIn(0, 255), 255, 255, 255)
+		// Raster is already at destination pixel size → 1:1 blit (crisp, no upscale).
+		inCanvas.drawImageRect(vImg, Rect.makeWH(vImg.width.toFloat(), vImg.height.toFloat()),
+			Rect.makeXYWH(inX, inY, inW, inH), vPaint)
+		vPaint.close()
+	}
+
+	fun destroy() {
+		for (vImg in fCache.values) vImg?.close()
+		fCache.clear()
+		for (vImg in fSvgRasterCache.values) vImg?.close()
+		fSvgRasterCache.clear()
+		fSvgIntrinsic.clear()
+	}
+}
+
+// ==================
+// MARK: SVG rasterisation (shared with SkiaEncodedImageDecoder)
+// ==================
+
+/** SVGDOM → offscreen raster → Image. Falls back to a 100×100 canvas when
+   the document declares no explicit width/height (the Android-vector path
+   always supplies them). */
+/** Size-driven SVG raster: renders the vector into a [inWpx]×[inHpx] surface by
+   scaling the intrinsic-sized document up to the target, so a vector drawn larger
+   than its intrinsic box stays crisp (vector render at target resolution) instead
+   of upscaling a small raster. Canvas-scale (rather than only setContainerSize)
+   keeps it correct whether or not the document declares a viewBox. */
+internal fun rasterizeSvgAt(inBytes: ByteArray, inIntrinsicW: Float, inIntrinsicH: Float, inWpx: Int, inHpx: Int): Image? = runCatching {
+	val vDom = SVGDOM(Data.makeFromBytes(inBytes))
+	val vIw = inIntrinsicW.takeIf { it > 0f } ?: 100f
+	val vIh = inIntrinsicH.takeIf { it > 0f } ?: 100f
+	vDom.setContainerSize(vIw, vIh)
+	val vSurface = Surface.makeRasterN32Premul(inWpx, inHpx)
+	val vCanvas = vSurface.canvas
+	vCanvas.scale(inWpx / vIw, inHpx / vIh)
+	vDom.render(vCanvas)
+	val vImage = vSurface.makeImageSnapshot()
+	vDom.close()
+	vSurface.close()
+	vImage
+}.getOrNull()
+
+internal fun rasterizeSvg(inBytes: ByteArray): Image? = runCatching {
+	val vDom = SVGDOM(Data.makeFromBytes(inBytes))
+	val vRoot = vDom.root
+	var vW = vRoot?.width?.value ?: 0f
+	var vH = vRoot?.height?.value ?: 0f
+	if (vW <= 0f) vW = 100f
+	if (vH <= 0f) vH = 100f
+	vDom.setContainerSize(vW, vH)
+	val vSurface = Surface.makeRasterN32Premul(vW.toInt().coerceAtLeast(1), vH.toInt().coerceAtLeast(1))
+	vDom.render(vSurface.canvas)
+	vSurface.makeImageSnapshot()
+}.getOrNull()

compose/ui/ui-graphics/src/skikoRendererMain/kotlin/com/compose/sdl/renderer/skia/SkiaLeafDrawer.kt

@@ -10,8 +10,8 @@ package com.compose.sdl.renderer.skia
    `SkiaBackedCanvas`'s `NativePainterCanvas` contract forwards to. Set once by
    `SkiaRenderBackend`; any `SkiaBackedCanvas` (frame, offscreen, or a GraphicsLayer
    recording — B6.2) can then draw images onto its own `internalSkiaCanvas`. */
-internal var skiaLeafDrawer: SkiaLeafDrawer? = null
+var skiaLeafDrawer: SkiaLeafDrawer? = null
 
-internal class SkiaLeafDrawer(
+class SkiaLeafDrawer(
 	val imageCache: SkiaImageCache,
 )

compose/ui/ui-graphics/src/skikoRendererMain/kotlin/com/compose/sdl/renderer/skia/SkiaOffscreen.kt

@@ -0,0 +1,55 @@
+package com.compose.sdl.renderer.skia
+
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.toComposeImageBitmap
+import com.compose.sdl.graphics.EncodedImageDecoder
+import org.jetbrains.skia.Data
+import org.jetbrains.skia.Image
+import org.jetbrains.skia.svg.SVGDOM
+
+// ==================
+// MARK: SkiaEncodedImageDecoder
+// ==================
+
+/** Encoded-image decode hook impl for the Skia renderer, consumed by
+   :components-resources' actuals (painterResource / SVG). Raster formats go
+   through Image.makeFromEncoded; when that fails the bytes are retried as SVG
+   through the same SVGDOM rasterisation SkiaImageCache uses. Pure CPU raster
+   (no GrContext), so it is safe on the resources pipeline's Dispatchers.Default
+   workers.
+
+   B6.1: produces an UPSTREAM ImageBitmap (Image.toComposeImageBitmap) — the Skia
+   renderer uses upstream's SkiaBackedCanvas/SkiaImageAsset, so the offscreen +
+   ImageBitmap-backed paths go through upstream's own actuals (the project
+   SkiaImageBitmap / SkiaOffscreenRenderer are retired). */
+class SkiaEncodedImageDecoder : EncodedImageDecoder {
+
+	override fun decode(inBytes: ByteArray): ImageBitmap? {
+		if (inBytes.isEmpty()) return null
+		val vImg = runCatching { Image.makeFromEncoded(inBytes) }.getOrNull()
+			?: rasterizeSvg(inBytes)
+			?: return null
+		val vBmp = vImg.toComposeImageBitmap()
+		vImg.close()
+		return vBmp
+	}
+
+	override fun svgIntrinsicSize(inBytes: ByteArray): Size? = runCatching {
+		val vDom = SVGDOM(Data.makeFromBytes(inBytes))
+		val vRoot = vDom.root
+		val vW = (vRoot?.width?.value ?: 0f).takeIf { it > 0f } ?: 100f
+		val vH = (vRoot?.height?.value ?: 0f).takeIf { it > 0f } ?: 100f
+		vDom.close()
+		Size(vW, vH)
+	}.getOrNull()
+
+	override fun decodeSvgAt(inBytes: ByteArray, inWidthPx: Int, inHeightPx: Int): ImageBitmap? {
+		if (inBytes.isEmpty() || inWidthPx <= 0 || inHeightPx <= 0) return null
+		val vSize = svgIntrinsicSize(inBytes) ?: return null
+		val vImg = rasterizeSvgAt(inBytes, vSize.width, vSize.height, inWidthPx, inHeightPx) ?: return null
+		val vBmp = vImg.toComposeImageBitmap()
+		vImg.close()
+		return vBmp
+	}
+}

compose/ui/ui-text/build.gradle.kts

@@ -0,0 +1,74 @@
+// :ui-text — androidx.compose.ui.text.* split out of :ui (upstream layout).
+// AnnotatedString / TextStyle / Paragraph / FontFamily + the B6.3 skiko text
+// engine (SkiaParagraph / SkiaParagraphOps / SkiaFonts, IconFont). SDL-free —
+// depends on :ui-graphics (Canvas), skiko, and the low ui primitives.
+
+plugins {
+    alias(libs.plugins.kotlin.multiplatform)
+    alias(libs.plugins.kotlin.plugin.compose)
+    alias(libs.plugins.compose.multiplatform)
+}
+
+val vHostSupportsMingw = rootProject.extra["vHostSupportsMingw"] as Boolean
+
+kotlin {
+    linuxArm64()
+    linuxX64()
+    macosArm64()
+    if (vHostSupportsMingw) mingwX64()
+
+    applyDefaultHierarchyTemplate()
+
+    sourceSets {
+        commonMain {
+            kotlin.srcDir("src/vendor/common/kotlin")
+            dependencies {
+                api(project(":ui-graphics"))
+                api(project(":ui-unit"))
+                api(project(":ui-util"))
+                api("org.jetbrains.compose.runtime:runtime:${libs.versions.composeRuntime.get()}")
+                api("org.jetbrains.compose.runtime:runtime-saveable:${libs.versions.composeRuntime.get()}")
+                implementation(libs.kotlinx.coroutines.core)
+            }
+        }
+        nativeMain {
+            kotlin.srcDir("src/vendor/native/kotlin")
+        }
+
+        val skikoRendererMain = create("skikoRendererMain") {
+            dependsOn(nativeMain.get())
+            kotlin.srcDir("src/vendor/skikoRenderer/kotlin")
+            dependencies {
+                implementation(libs.skiko)
+            }
+        }
+        val skikoRendererMacosMain = create("skikoRendererMacosMain") { dependsOn(skikoRendererMain) }
+        val skikoRendererLinuxMain = create("skikoRendererLinuxMain") { dependsOn(skikoRendererMain) }
+        get("macosArm64Main").dependsOn(skikoRendererMacosMain)
+        get("linuxX64Main").dependsOn(skikoRendererLinuxMain)
+        get("linuxArm64Main").dependsOn(skikoRendererLinuxMain)
+
+        if (vHostSupportsMingw) {
+            val skikoRendererMingwSharedMain = create("skikoRendererMingwSharedMain") {
+                dependsOn(nativeMain.get())
+                kotlin.srcDir("src/skikoRendererMain/kotlin")
+                kotlin.srcDir("src/vendor/skikoRenderer/kotlin")
+                dependencies {
+                    implementation("com.bitsycore.skiko:skiko:${providers.gradleProperty("skikoMingwVersion").getOrElse("0.150.1-mingw.1")}")
+                }
+            }
+            val skikoRendererMingwMain = create("skikoRendererMingwMain") { dependsOn(skikoRendererMingwSharedMain) }
+            get("mingwX64Main").dependsOn(skikoRendererMingwMain)
+        }
+    }
+
+    compilerOptions {
+        freeCompilerArgs.addAll(
+            "-Xcollection-literals",
+            "-Xexpect-actual-classes",
+            "-opt-in=kotlinx.cinterop.ExperimentalForeignApi",
+            "-opt-in=androidx.compose.ui.InternalComposeUiApi",
+            "-opt-in=androidx.compose.ui.ExperimentalComposeUiApi"
+        )
+    }
+}

compose/ui/ui-text/compose-fork.txt

@@ -0,0 +1,270 @@
+# ACCEPTED DEVIATION — do NOT try to "fill" the skikoMain text-engine gaps below.
+# The upstream skikoMain text stack (ParagraphBuilder / ParagraphLayouter /
+# PlatformFont / FontCache / SkiaParagraph.skiko + siblings, ~17 files) is
+# intentionally UNSELECTED (it shows up in the DIAGNOSTIC GAPS tail). The port
+# instead ships a reduced local engine: a skiko-free SkiaParagraph.native.kt over
+# SkiaParagraphEngine.kt (skikoRendererMain), which keeps the project's own
+# SkiaFonts (name->bytes + variable-axis) font model instead of upstream's
+# PlatformFont/FontCache/FontCollection. Reason: the flat nativeMain source-set
+# layout can't host upstream's skiko/nonJvm-split actuals as-is (see the memory
+# note "flat nativeMain vs upstream skiko+nonJvm hierarchy"). This is the single
+# biggest "not upstream" surface and the root of the RTL / stroke-DrawStyle /
+# grapheme reductions — those are tracked in PLAN.md §2, not fixed by vendoring
+# these files. If you select them, expect the source-set hierarchy to fight you.
+
+SET_REPO=https://github.com/JetBrains/compose-multiplatform-core@<COMPOSE_CORE_REF>
+SET_FOLDER=compose/ui/ui-text/src
+
+commonMain/kotlin/ -> src/vendor/common/kotlin/
+#     | commonMain/kotlin/androidx/compose/ui/text/AnnotatedString.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/AnnotatedString.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/AtomicReference.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/AtomicReference.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/Bullet.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/Bullet.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/CharHelpers.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/CharHelpers.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/ExperimentalTextApi.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/ExperimentalTextApi.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/InternalTextApi.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/InternalTextApi.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/LinkAnnotation.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/LinkAnnotation.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/LinkInteractionListener.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/LinkInteractionListener.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/MultiParagraph.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/MultiParagraph.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/MultiParagraphIntrinsics.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/MultiParagraphIntrinsics.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/Paragraph.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/Paragraph.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/ParagraphIntrinsics.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/ParagraphIntrinsics.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/ParagraphStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/ParagraphStyle.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/Placeholder.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/Placeholder.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/PlatformTextStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/PlatformTextStyle.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/Savers.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/Savers.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/SpanStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/SpanStyle.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/String.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/String.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/StringAnnotation.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/StringAnnotation.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TextGranularity.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextGranularity.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TextInclusionStrategy.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextInclusionStrategy.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TextLayoutResult.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextLayoutResult.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TextLinkStyles.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextLinkStyles.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TextMeasurer.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextMeasurer.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TextPainter.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextPainter.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TextRange.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextRange.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TextStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextStyle.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/TtsAnnotation.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TtsAnnotation.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/UrlAnnotation.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/UrlAnnotation.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/DelegatingFontLoaderForDeprecatedUsage.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/DelegatingFontLoaderForDeprecatedUsage.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/Font.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/Font.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontFamily.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontFamily.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontFamilyTypefaceAdapter.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontFamilyTypefaceAdapter.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontListFontFamilyTypefaceAdapter.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontListFontFamilyTypefaceAdapter.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontLoadingStrategy.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontLoadingStrategy.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontMatcher.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontMatcher.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontStyle.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontSynthesis.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontSynthesis.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontVariation.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontVariation.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/FontWeight.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/FontWeight.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/font/Typeface.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/font/Typeface.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/EditCommand.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/EditCommand.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/EditProcessor.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/EditProcessor.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/EditingBuffer.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/EditingBuffer.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/GapBuffer.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/GapBuffer.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/ImeAction.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/ImeAction.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/ImeOptions.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/ImeOptions.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/InputEventCallback.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/InputEventCallback.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/KeyboardCapitalization.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/KeyboardCapitalization.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/KeyboardType.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/KeyboardType.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/MathUtils.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/MathUtils.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/OffsetMapping.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/OffsetMapping.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/PlatformImeOptions.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/PlatformImeOptions.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/TextFieldValue.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/TextFieldValue.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/TextInputService.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/TextInputService.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/input/VisualTransformation.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/input/VisualTransformation.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/internal/InlineClassHelper.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/internal/InlineClassHelper.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/internal/JvmDefaultWithCompatibility.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/internal/JvmDefaultWithCompatibility.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/intl/Locale.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/intl/Locale.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/intl/LocaleList.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/intl/LocaleList.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/intl/PlatformLocale.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/intl/PlatformLocale.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/platform/Dispatcher.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/platform/Dispatcher.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/platform/PlatformMultiParagraphDraw.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/platform/PlatformMultiParagraphDraw.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/platform/PlatformString.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/platform/PlatformString.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/platform/Synchronization.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/platform/Synchronization.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/BaselineShift.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/BaselineShift.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/Hyphens.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/Hyphens.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/LineBreak.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/LineBreak.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/LineHeightStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/LineHeightStyle.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/ResolvedTextDirection.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/ResolvedTextDirection.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/TextAlign.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/TextAlign.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/TextDecoration.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/TextDecoration.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/TextDirection.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/TextDirection.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/TextForegroundStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/TextForegroundStyle.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/TextGeometricTransform.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/TextGeometricTransform.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/TextIndent.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/TextIndent.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/TextMotion.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/TextMotion.kt
+#     | commonMain/kotlin/androidx/compose/ui/text/style/TextOverflow.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/style/TextOverflow.kt
+!commonMain/kotlin/androidx/compose/ui/text/platform/Synchronization.kt
+
+nativeMain/kotlin/androidx/compose/ui/text/WeakReference.native.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/WeakReference.native.kt
+nativeMain/kotlin/androidx/compose/ui/text/font/FontSynthesis.native.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/font/FontSynthesis.native.kt
+
+nonJvmMain/kotlin/ -> src/vendor/native/kotlin/
+#     | nonJvmMain/kotlin/androidx/compose/ui/text/AnnotatedString.nonJvm.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/AnnotatedString.nonJvm.kt
+#     | nonJvmMain/kotlin/androidx/compose/ui/text/AtomicReference.nonJvm.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/AtomicReference.nonJvm.kt
+#     | nonJvmMain/kotlin/androidx/compose/ui/text/CharHelpers.nonJvm.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/CharHelpers.nonJvm.kt
+#     | nonJvmMain/kotlin/androidx/compose/ui/text/input/GapBuffer.nonJvmMain.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/input/GapBuffer.nonJvmMain.kt
+#     | nonJvmMain/kotlin/androidx/compose/ui/text/internal/JvmDefaultWithCompatibility.nonJvmNative.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/internal/JvmDefaultWithCompatibility.nonJvmNative.kt
+!nonJvmMain/kotlin/androidx/compose/ui/text/CharHelpers.nonJvm.kt
+
+skikoMain/kotlin/androidx/compose/ui/text/Paragraph.skiko.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/Paragraph.native.kt
+skikoMain/kotlin/androidx/compose/ui/text/Savers.skiko.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/Savers.native.kt
+skikoMain/kotlin/androidx/compose/ui/text/TextDecorationLineStyle.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/TextDecorationLineStyle.kt
+skikoMain/kotlin/androidx/compose/ui/text/TextStyle.skiko.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/TextStyle.native.kt
+skikoMain/kotlin/androidx/compose/ui/text/UnresolvedSymbolsRegistry.skiko.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/UnresolvedSymbolsRegistry.native.kt
+skikoMain/kotlin/androidx/compose/ui/text/WeakReference.skiko.kt -> src/vendor/common/kotlin/androidx/compose/ui/text/WeakReference.kt
+skikoMain/kotlin/androidx/compose/ui/text/input/PlatformImeOptions.skiko.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/input/PlatformImeOptions.native.kt
+skikoMain/kotlin/androidx/compose/ui/text/input/PlatformTextInputService2.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/input/PlatformTextInputService2.kt
+skikoMain/kotlin/androidx/compose/ui/text/platform/SkiaMultiParagraphDraw.skiko.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/platform/SkiaMultiParagraphDraw.native.kt
+skikoMain/kotlin/androidx/compose/ui/text/style/LineBreak.skiko.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/style/LineBreak.native.kt
+skikoMain/kotlin/androidx/compose/ui/text/style/TextMotion.skiko.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/style/TextMotion.native.kt
+
+# >>> ---- DIAGNOSTIC GAPS ---- <<<<
+#   androidMain (77)
+#     | androidMain/kotlin/androidx/compose/ui/text/AndroidComposeUiTextFlags.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/AndroidComposeUiTextFlags.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/AndroidParagraph.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/AndroidParagraph.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/AndroidTextStyle.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/AndroidTextStyle.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/CharHelpers.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/CharHelpers.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/EmojiSupportMatch.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/EmojiSupportMatch.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/Html.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/Html.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/Paragraph.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/Paragraph.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/ParagraphIntrinsics.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/ParagraphIntrinsics.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/Savers.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/Savers.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/BoringLayoutFactory.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/BoringLayoutFactory.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/CharSequenceCharacterIterator.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/CharSequenceCharacterIterator.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/InlineClassUtils.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/InlineClassUtils.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/InternalPlatformTextApi.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/InternalPlatformTextApi.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/LayoutCompat.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/LayoutCompat.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/LayoutHelper.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/LayoutHelper.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/LayoutIntrinsics.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/LayoutIntrinsics.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/ListUtils.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/ListUtils.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/PaintExtensions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/PaintExtensions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/SpannedExtensions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/SpannedExtensions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/StaticLayoutFactory.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/StaticLayoutFactory.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/TextAndroidCanvas.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/TextAndroidCanvas.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/TextLayout.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/TextLayout.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/TextLayoutGetRangeForRectExtensions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/TextLayoutGetRangeForRectExtensions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/selection/SegmentFinder.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/selection/SegmentFinder.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/selection/WordBoundary.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/selection/WordBoundary.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/selection/WordIterator.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/selection/WordIterator.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/BaselineShiftSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/BaselineShiftSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/FontFeatureSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/FontFeatureSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/IndentationFixSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/IndentationFixSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/LetterSpacingSpanEm.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/LetterSpacingSpanEm.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/LetterSpacingSpanPx.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/LetterSpacingSpanPx.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/LineHeightSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/LineHeightSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/LineHeightStyleSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/LineHeightStyleSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/PlaceholderSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/PlaceholderSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/ShadowSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/ShadowSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/SkewXSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/SkewXSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/TextDecorationSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/TextDecorationSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/android/style/TypefaceSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/android/style/TypefaceSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/AndroidFont.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/AndroidFont.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/AndroidFontLoader.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/AndroidFontLoader.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/AndroidFontResolveInterceptor.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/AndroidFontResolveInterceptor.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/AndroidFontUtils.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/AndroidFontUtils.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/AndroidPreloadedFont.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/AndroidPreloadedFont.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/AndroidTypeface.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/AndroidTypeface.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/DelegatingFontLoaderForDeprecatedUsage.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/DelegatingFontLoaderForDeprecatedUsage.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/DeviceFontFamilyNameFont.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/DeviceFontFamilyNameFont.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/FontSynthesis.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/FontSynthesis.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/PlatformFontFamilyTypefaceAdapter.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/PlatformFontFamilyTypefaceAdapter.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/PlatformFontVariationSettings.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/PlatformFontVariationSettings.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/font/PlatformTypefaces.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/font/PlatformTypefaces.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/input/PlatformImeOptions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/input/PlatformImeOptions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/intl/AndroidLocaleDelegate.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/intl/AndroidLocaleDelegate.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/intl/AndroidPlatformLocale.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/intl/AndroidPlatformLocale.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidAccessibilitySpannableString.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidAccessibilitySpannableString.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidDefaultTypeface.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidDefaultTypeface.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidFontListTypeface.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidFontListTypeface.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidGenericFontFamilyTypeface.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidGenericFontFamilyTypeface.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidMultiParagraphDraw.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidMultiParagraphDraw.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidParagraphHelper.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidParagraphHelper.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidStringDelegate.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidStringDelegate.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidTextPaint.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidTextPaint.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidTypeface.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidTypeface.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/AndroidTypefaceWrapper.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/AndroidTypefaceWrapper.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/EmojiCompatStatus.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/EmojiCompatStatus.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/Synchronization.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/Synchronization.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/URLSpanCache.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/URLSpanCache.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/extensions/LocaleExtensions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/extensions/LocaleExtensions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/extensions/PlaceholderExtensions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/extensions/PlaceholderExtensions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/extensions/SpannableExtensions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/extensions/SpannableExtensions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/extensions/TextPaintExtensions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/extensions/TextPaintExtensions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/extensions/TtsAnnotationExtensions.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/extensions/TtsAnnotationExtensions.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/style/BulletSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/style/BulletSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/style/DrawStyleSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/style/DrawStyleSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/platform/style/ShaderBrushSpan.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/platform/style/ShaderBrushSpan.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/style/LineBreak.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/style/LineBreak.android.kt
+#     | androidMain/kotlin/androidx/compose/ui/text/style/TextMotion.android.kt -> src/vendor/android/kotlin/androidx/compose/ui/text/style/TextMotion.android.kt
+#   darwinMain (2)
+#     | darwinMain/kotlin/androidx/compose/ui/text/intl/PlatformLocale.darwin.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/intl/PlatformLocale.darwin.kt
+#     | darwinMain/kotlin/androidx/compose/ui/text/platform/NativeStringDelegate.darwin.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/platform/NativeStringDelegate.darwin.kt
+#   desktopMain (15)
+#     | desktopMain/kotlin/androidx/compose/ui/text/Cache.jvm.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/Cache.jvm.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/CharHelpers.jvm.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/CharHelpers.jvm.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/WeakReference.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/WeakReference.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/font/FontFamily.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/font/FontFamily.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.skiko.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.skiko.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/font/FontSynthesis.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/font/FontSynthesis.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/intl/DesktopPlatformLocale.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/intl/DesktopPlatformLocale.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/platform/AwtFontInterop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/platform/AwtFontInterop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/platform/AwtFontUtils.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/platform/AwtFontUtils.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/platform/DesktopFont.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/platform/DesktopFont.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/platform/DesktopStringDelegate.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/platform/DesktopStringDelegate.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/platform/InternalFontApiChecker.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/platform/InternalFontApiChecker.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/platform/JetBrainsRuntimeFontFamilies.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/platform/JetBrainsRuntimeFontFamilies.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/platform/ParagraphLayouter.desktop.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/platform/ParagraphLayouter.desktop.kt
+#     | desktopMain/kotlin/androidx/compose/ui/text/platform/ReflectionUtil.kt -> src/vendor/desktop/kotlin/androidx/compose/ui/text/platform/ReflectionUtil.kt
+#   iosMain (2)
+#     | iosMain/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.ios.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.ios.kt
+#     | iosMain/kotlin/androidx/compose/ui/text/input/PlatformImeOptions.ios.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/input/PlatformImeOptions.ios.kt
+#   jsMain (1)
+#     | jsMain/kotlin/androidx/compose/ui/text/intl/Actuals.js.kt -> src/vendor/js/kotlin/androidx/compose/ui/text/intl/Actuals.js.kt
+#   jvmAndAndroidMain (5)
+#     | jvmAndAndroidMain/kotlin/androidx/compose/ui/text/ActualAtomicReferenceJvm.jvmAndAndroid.kt -> src/vendor/jvmAndAndroid/kotlin/androidx/compose/ui/text/ActualAtomicReferenceJvm.jvmAndAndroid.kt
+#     | jvmAndAndroidMain/kotlin/androidx/compose/ui/text/JvmAnnotatedString.jvmAndAndroid.kt -> src/vendor/jvmAndAndroid/kotlin/androidx/compose/ui/text/JvmAnnotatedString.jvmAndAndroid.kt
+#     | jvmAndAndroidMain/kotlin/androidx/compose/ui/text/input/GapBuffer.jvmAndAndroid.kt -> src/vendor/jvmAndAndroid/kotlin/androidx/compose/ui/text/input/GapBuffer.jvmAndAndroid.kt
+#     | jvmAndAndroidMain/kotlin/androidx/compose/ui/text/internal/JvmDefaultWithCompatibility.jvmAndAndroid.kt -> src/vendor/jvmAndAndroid/kotlin/androidx/compose/ui/text/internal/JvmDefaultWithCompatibility.jvmAndAndroid.kt
+#     | jvmAndAndroidMain/kotlin/androidx/compose/ui/text/intl/Locale.jvmAndAndroid.kt -> src/vendor/jvmAndAndroid/kotlin/androidx/compose/ui/text/intl/Locale.jvmAndAndroid.kt
+#   macosMain (1)
+#     | macosMain/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.skiko.macos.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.skiko.macos.kt
+#   nativeMain (4)
+#     | nativeMain/kotlin/androidx/compose/ui/text/Cache.native.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/Cache.native.kt
+#     | nativeMain/kotlin/androidx/compose/ui/text/platform/NativeFont.native.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/platform/NativeFont.native.kt
+#     | nativeMain/kotlin/androidx/compose/ui/text/platform/ParagraphLayouter.native.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/platform/ParagraphLayouter.native.kt
+#     | nativeMain/kotlin/androidx/compose/ui/text/platform/PlatformFont.native.kt -> src/vendor/native/kotlin/androidx/compose/ui/text/platform/PlatformFont.native.kt
+#   skikoMain (17)
+#     | skikoMain/kotlin/androidx/compose/ui/text/ActualParagraph.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/ActualParagraph.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/Cache.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/Cache.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/CharHelpers.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/CharHelpers.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/FontRasterizationSettings.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/FontRasterizationSettings.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/ParagraphIntrisics.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/ParagraphIntrisics.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/SkiaParagraph.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/SkiaParagraph.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/font/DelegatingFontLoaderForDeprecatedUsage.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/font/DelegatingFontLoaderForDeprecatedUsage.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/font/PlatformFontFamilyTypefaceAdapter.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/font/PlatformFontFamilyTypefaceAdapter.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/font/SkiaFontLoader.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/font/SkiaFontLoader.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/intl/PlatformLocale.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/intl/PlatformLocale.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/platform/ParagraphBuilder.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/platform/ParagraphBuilder.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/platform/ParagraphLayouter.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/platform/ParagraphLayouter.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/platform/PlatformFont.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/platform/PlatformFont.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/platform/SkiaParagraphIntrinsics.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/platform/SkiaParagraphIntrinsics.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/platform/SkiaTextPaint.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/platform/SkiaTextPaint.skiko.kt
+#     | skikoMain/kotlin/androidx/compose/ui/text/platform/Synchronization.skiko.kt -> src/vendor/skikoRenderer/kotlin/androidx/compose/ui/text/platform/Synchronization.skiko.kt
+#   wasmJsMain (1)
+#     | wasmJsMain/kotlin/androidx/compose/ui/text/intl/Actuals.wasm.kt -> src/vendor/wasmJs/kotlin/androidx/compose/ui/text/intl/Actuals.wasm.kt
+#   webMain (10)
+#     | webMain/kotlin/androidx/compose/ui/text/Cache.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/Cache.web.kt
+#     | webMain/kotlin/androidx/compose/ui/text/WeakReference.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/WeakReference.web.kt
+#     | webMain/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.skiko.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.skiko.web.kt
+#     | webMain/kotlin/androidx/compose/ui/text/font/FontSynthesis.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/font/FontSynthesis.web.kt
+#     | webMain/kotlin/androidx/compose/ui/text/intl/PlatformLocale.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/intl/PlatformLocale.web.kt
+#     | webMain/kotlin/androidx/compose/ui/text/intl/PreferredLanguages.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/intl/PreferredLanguages.web.kt
+#     | webMain/kotlin/androidx/compose/ui/text/platform/ParagraphLayouter.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/platform/ParagraphLayouter.web.kt
+#     | webMain/kotlin/androidx/compose/ui/text/platform/PlatformFont.web.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/platform/PlatformFont.web.kt
+#     | webMain/kotlin/androidx/compose/ui/text/platform/WebFont.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/platform/WebFont.kt
+#     | webMain/kotlin/androidx/compose/ui/text/platform/WebStringDelegate.kt -> src/vendor/web/kotlin/androidx/compose/ui/text/platform/WebStringDelegate.kt
+# <<< ---- DIAGNOSTIC GAPS ---- >>>>

compose/ui/ui-text/src/commonMain/kotlin/com/compose/sdl/icons/IconFont.kt

@@ -20,9 +20,9 @@ object IconFont {
 
 	private val fFonts = mutableMapOf<String, ByteArray>()
 	// Families that render as single variable-axis glyphs (Material Symbols),
-	// vs ordinary text fonts. The SDL3 renderer routes only these through its
-	// single-glyph FreeType icon path; text families (e.g. a bundled
-	// monospace) must go through normal full-string rendering.
+	// vs ordinary text fonts — icon families are drawn one codepoint at a time,
+	// while text families (e.g. a bundled monospace) go through normal
+	// full-string rendering.
 	private val fIconFamilies = mutableSetOf<String>()
 
 	/** Register a TEXT font family's bytes (rendered as full strings; e.g. a
@@ -32,9 +32,9 @@ object IconFont {
 		fFonts[inFamily] = inBytes
 	}
 
-	/** Register an ICON font family (Material Symbols et al.) — variable-axis,
-	   drawn one glyph at a time on the SDL3 backend. Same byte store as
-	   register(), but also flags the family as an icon font. */
+	/** Register an ICON font family (Material Symbols et al.) — variable-axis.
+	   Same byte store as register(), but also flags the family as an icon
+	   font. */
 	fun registerIcon(inFamily: String, inBytes: ByteArray) {
 		fFonts[inFamily] = inBytes
 		fIconFamilies += inFamily

compose/ui/ui-text/src/commonMain/kotlin/com/compose/sdl/text/NamedFont.kt

@@ -38,12 +38,18 @@ class NamedFont(
 	override val loadingStrategy: FontLoadingStrategy = FontLoadingStrategy.Blocking
 
 	override fun equals(other: Any?): Boolean =
-		other is NamedFont && other.name == name && other.weight == weight && other.style == style
+		other is NamedFont && other.name == name && other.weight == weight && other.style == style &&
+			other.axes == axes && other.variationSettings == variationSettings
 
 	override fun hashCode(): Int {
 		var h = name.hashCode()
 		h = 31 * h + weight.hashCode()
 		h = 31 * h + style.hashCode()
+		// Axis settings (Material Symbols FILL/wght/GRAD/opsz) are part of identity —
+		// without them two axis-differing icon fonts compare equal and collide in the
+		// FontFamily → typeface cache, rendering one icon's axes for the other.
+		h = 31 * h + (axes?.hashCode() ?: 0)
+		h = 31 * h + variationSettings.hashCode()
 		return h
 	}
 

compose/ui/ui-text/src/commonMain/kotlin/com/compose/sdl/text/TextRendererCapabilities.kt

@@ -10,9 +10,8 @@ package com.compose.sdl.text
    something the renderer can't deliver. Today the only consumer is the
    Material Symbols install() path, which emits a one-shot warning when
    variable-font axes won't be honoured. The Skia renderer sets
-   supportsFontVariations = true via Typeface.makeClone; the SDL3 renderer
-   leaves it false because SDL3_ttf 3.2 has no axis-set API (filename /
-   iostream / size / face / dpi only).
+   supportsFontVariations = true via Typeface.makeClone; a renderer that
+   couldn't honour variable-font axes would leave it false.
 
    `supportsFontVariations` is null until a renderer initialises — code
    that warns on install() ignores the null case so it doesn't fire when

compose/ui/ui-text/src/commonMain/kotlin/com/compose/sdl/text/input/NoOpPlatformTextInputService.kt

@@ -20,7 +20,7 @@ import androidx.compose.ui.text.input.TextFieldValue
  SDL_TEXT_INPUT_EVENT), replace this with a real implementation.
 */
 @Suppress("DEPRECATION")
-internal object NoOpPlatformTextInputService : PlatformTextInputService {
+object NoOpPlatformTextInputService : PlatformTextInputService {
 	override fun startInput(
 		value: TextFieldValue,
 		imeOptions: ImeOptions,

compose/ui/ui-text/src/nativeMain/kotlin/androidx/compose/ui/text/FontRasterizationSettings.native.kt

@@ -1,18 +1,25 @@
 package androidx.compose.ui.text
 
+import kotlin.experimental.ExperimentalNativeApi
+
+// VENDOR-BASE: compose/ui/ui-text/src/skikoMain/kotlin/androidx/compose/ui/text/FontRasterizationSettings.skiko.kt @ v1.12.0-beta03+dev4483
+
 // ==================
 // MARK: FontRasterizationSettings native actual (Skia-free)
 // ==================
 
 /**
- * Hand-written port of upstream `FontRasterizationSettings.skiko.kt` minus
- * the Skia-only `toSkFontEdging` / `toSkFontHinting` extensions and the
- * `currentPlatform()` lookup. Vendored TextStyle.native.kt references
- * `FontRasterizationSettings.PlatformDefault` so we need the class +
- * companion to exist; the renderer doesn't read these values yet so a
- * single shared "PlatformDefault" instance (AntiAlias / Normal /
- * subpixel-on / autohint-off — matches upstream's macOS/Linux default)
- * is fine.
+ * Rule-3 manual vendor of upstream `FontRasterizationSettings.skiko.kt` minus the
+ * Skia-only `toSkFontEdging` / `toSkFontHinting` extensions (the skiko renderer
+ * maps `PlatformDefault` to skiko enums itself, in SkiaParagraphEngine). It lives
+ * in the skiko-FREE `nativeMain` because vendored `TextStyle.native.kt` references
+ * `FontRasterizationSettings.PlatformDefault`, and `nativeMain` is the shared parent
+ * of the official-skiko (mac/linux) and fork-skiko (mingw) legs — so it can't carry
+ * skiko. `PlatformDefault` reproduces upstream's per-OS defaults VERBATIM (verified
+ * against the pin): anti-aliased + subpixel everywhere, hinting Slight on Linux and
+ * Normal on Windows/macOS (macOS ignores hinting). This split — and the hand port —
+ * goes away if the port hosts the `Paragraph` actual in the skiko source set and
+ * vendors upstream's skiko text files verbatim (PLAN.md §6).
  */
 
 @ExperimentalTextApi
@@ -38,9 +45,10 @@ class FontRasterizationSettings(
 	val autoHintingForced: Boolean,
 ) {
 	companion object {
+		@OptIn(ExperimentalNativeApi::class)
 		val PlatformDefault: FontRasterizationSettings = FontRasterizationSettings(
 			smoothing = FontSmoothing.AntiAlias,
-			hinting = FontHinting.Normal,
+			hinting = if (Platform.osFamily == OsFamily.LINUX) FontHinting.Slight else FontHinting.Normal,
 			subpixelPositioning = true,
 			autoHintingForced = false,
 		)

compose/ui/ui-text/src/nativeMain/kotlin/androidx/compose/ui/text/ParagraphFactories.native.kt

@@ -27,19 +27,12 @@ private fun makeSkiaParagraph(
 	ellipsize: Boolean,
 	density: Float,
 	spanStyles: List<AnnotatedString.Range<SpanStyle>>,
+	placeholders: List<AnnotatedString.Range<Placeholder>>,
 ): Paragraph = SkiaParagraph(
 	text, style, width,
-	buildParagraphOps(text, style, width, maxLines, ellipsize, density, spanStyles),
+	buildParagraphOps(text, style, width, maxLines, ellipsize, density, spanStyles, placeholders),
 )
 
-/** [min, max] intrinsic width from a throwaway unbounded skiko layout. */
-internal expect fun paragraphIntrinsicWidths(
-	text: String,
-	style: TextStyle,
-	density: Float,
-	spanStyles: List<AnnotatedString.Range<SpanStyle>>,
-): FloatArray
-
 /** Carries text+style for the intrinsics-based Paragraph factories; intrinsic
    widths come from an unbounded skiko layout. `density` is the LocalDensity
    scalar (dpr on Retina): it converts sp → pixels so intrinsic widths land in
@@ -49,13 +42,35 @@ internal class NativeParagraphIntrinsics(
 	val paragraphStyle: TextStyle,
 	val density: Float,
 	val spanStyles: List<AnnotatedString.Range<SpanStyle>> = emptyList(),
+	val placeholders: List<AnnotatedString.Range<Placeholder>> = emptyList(),
 ) : ParagraphIntrinsics {
-	private val widths = paragraphIntrinsicWidths(paragraphText, paragraphStyle, density, spanStyles)
-	override val minIntrinsicWidth: Float = widths[0]
-	override val maxIntrinsicWidth: Float = widths[1]
+	// Shape ONCE here (unbounded, no line cap). The shaped paragraph is RETAINED
+	// and reused by Paragraph(this, …) for the final layout — skiko re-breaks at
+	// the final width without re-shaping — so measured text shapes once, not twice
+	// (the P1.2 double-shape: cold text frames were dominated by shaping).
+	val ops: NativeParagraphOps = buildParagraphOps(
+		paragraphText, paragraphStyle, Float.POSITIVE_INFINITY, Int.MAX_VALUE, false, density, spanStyles, placeholders,
+	)
+	override val minIntrinsicWidth: Float = ops.minIntrinsicWidth
+	override val maxIntrinsicWidth: Float = ops.maxIntrinsicWidth
 	override val hasStaleResolvedFonts: Boolean = false
 }
 
+/** Build the final Paragraph from a pre-shaped intrinsics. Reuse the intrinsics'
+   shaped paragraph (just re-break at [width]) when there's no line cap / ellipsis
+   — those are baked into the paragraph at build time and need a fresh build. */
+private fun paragraphFromIntrinsics(
+	i: NativeParagraphIntrinsics, width: Float, maxLines: Int, ellipsize: Boolean,
+): Paragraph {
+	if (maxLines == Int.MAX_VALUE && !ellipsize) {
+		i.ops.relayout(width)
+		return SkiaParagraph(i.paragraphText, i.paragraphStyle, width, i.ops)
+	}
+	return makeSkiaParagraph(
+		i.paragraphText, i.paragraphStyle, width, maxLines, ellipsize, i.density, i.spanStyles, i.placeholders,
+	)
+}
+
 private fun widthFrom(constraints: Constraints): Float =
 	if (constraints.hasBoundedWidth) constraints.maxWidth.toFloat() else Float.POSITIVE_INFINITY
 
@@ -69,7 +84,7 @@ actual fun ParagraphIntrinsics(
 	placeholders: List<AnnotatedString.Range<Placeholder>>,
 	density: Density,
 	resourceLoader: Font.ResourceLoader,
-): ParagraphIntrinsics = NativeParagraphIntrinsics(text, style, density.density, spanStyles)
+): ParagraphIntrinsics = NativeParagraphIntrinsics(text, style, density.density, spanStyles, placeholders)
 
 actual fun ParagraphIntrinsics(
 	text: String,
@@ -78,7 +93,7 @@ actual fun ParagraphIntrinsics(
 	placeholders: List<AnnotatedString.Range<Placeholder>>,
 	density: Density,
 	fontFamilyResolver: FontFamily.Resolver,
-): ParagraphIntrinsics = NativeParagraphIntrinsics(text, style, density.density, spanStyles)
+): ParagraphIntrinsics = NativeParagraphIntrinsics(text, style, density.density, spanStyles, placeholders)
 
 actual fun ParagraphIntrinsics(
 	text: String,
@@ -87,7 +102,7 @@ actual fun ParagraphIntrinsics(
 	density: Density,
 	fontFamilyResolver: FontFamily.Resolver,
 	placeholders: List<AnnotatedString.Range<Placeholder>>,
-): ParagraphIntrinsics = NativeParagraphIntrinsics(text, style, density.density, annotations.filterSpanStyles())
+): ParagraphIntrinsics = NativeParagraphIntrinsics(text, style, density.density, annotations.filterSpanStyles(), placeholders)
 
 actual fun ParagraphIntrinsics(
 	text: String,
@@ -97,7 +112,7 @@ actual fun ParagraphIntrinsics(
 	fontFamilyResolver: FontFamily.Resolver,
 	placeholders: List<AnnotatedString.Range<Placeholder>>,
 	softWrap: Boolean,
-): ParagraphIntrinsics = NativeParagraphIntrinsics(text, style, density.density, annotations.filterSpanStyles())
+): ParagraphIntrinsics = NativeParagraphIntrinsics(text, style, density.density, annotations.filterSpanStyles(), placeholders)
 
 // AnnotatedString.Annotation is a sealed interface (SpanStyle, ParagraphStyle,
 // LinkAnnotation, StringAnnotation, TtsAnnotation, …). Only SpanStyle affects
@@ -120,7 +135,7 @@ actual fun Paragraph(
 	width: Float,
 	density: Density,
 	resourceLoader: Font.ResourceLoader,
-): Paragraph = makeSkiaParagraph(text, style, width, maxLines, ellipsis, density.density, spanStyles)
+): Paragraph = makeSkiaParagraph(text, style, width, maxLines, ellipsis, density.density, spanStyles, placeholders)
 
 actual fun Paragraph(
 	text: String,
@@ -132,7 +147,7 @@ actual fun Paragraph(
 	placeholders: List<AnnotatedString.Range<Placeholder>>,
 	maxLines: Int,
 	ellipsis: Boolean,
-): Paragraph = makeSkiaParagraph(text, style, width, maxLines, ellipsis, density.density, spanStyles)
+): Paragraph = makeSkiaParagraph(text, style, width, maxLines, ellipsis, density.density, spanStyles, placeholders)
 
 actual fun Paragraph(
 	text: String,
@@ -144,7 +159,7 @@ actual fun Paragraph(
 	placeholders: List<AnnotatedString.Range<Placeholder>>,
 	maxLines: Int,
 	ellipsis: Boolean,
-): Paragraph = makeSkiaParagraph(text, style, widthFrom(constraints), maxLines, ellipsis, density.density, spanStyles)
+): Paragraph = makeSkiaParagraph(text, style, widthFrom(constraints), maxLines, ellipsis, density.density, spanStyles, placeholders)
 
 actual fun Paragraph(
 	text: String,
@@ -157,7 +172,7 @@ actual fun Paragraph(
 	maxLines: Int,
 	overflow: TextOverflow,
 ): Paragraph = makeSkiaParagraph(
-	text, style, widthFrom(constraints), maxLines, overflow == TextOverflow.Ellipsis, density.density, spanStyles,
+	text, style, widthFrom(constraints), maxLines, overflow == TextOverflow.Ellipsis, density.density, spanStyles, placeholders,
 )
 
 actual fun Paragraph(
@@ -165,30 +180,24 @@ actual fun Paragraph(
 	maxLines: Int,
 	ellipsis: Boolean,
 	width: Float,
-): Paragraph {
-	val i = paragraphIntrinsics as NativeParagraphIntrinsics
-	return makeSkiaParagraph(i.paragraphText, i.paragraphStyle, width, maxLines, ellipsis, i.density, i.spanStyles)
-}
+): Paragraph =
+	paragraphFromIntrinsics(paragraphIntrinsics as NativeParagraphIntrinsics, width, maxLines, ellipsis)
 
 actual fun Paragraph(
 	paragraphIntrinsics: ParagraphIntrinsics,
 	constraints: Constraints,
 	maxLines: Int,
 	ellipsis: Boolean,
-): Paragraph {
-	val i = paragraphIntrinsics as NativeParagraphIntrinsics
-	return makeSkiaParagraph(i.paragraphText, i.paragraphStyle, widthFrom(constraints), maxLines, ellipsis, i.density, i.spanStyles)
-}
+): Paragraph =
+	paragraphFromIntrinsics(paragraphIntrinsics as NativeParagraphIntrinsics, widthFrom(constraints), maxLines, ellipsis)
 
 actual fun Paragraph(
 	paragraphIntrinsics: ParagraphIntrinsics,
 	constraints: Constraints,
 	maxLines: Int,
 	overflow: TextOverflow,
-): Paragraph {
-	val i = paragraphIntrinsics as NativeParagraphIntrinsics
-	return makeSkiaParagraph(
-		i.paragraphText, i.paragraphStyle, widthFrom(constraints), maxLines,
-		overflow == TextOverflow.Ellipsis, i.density, i.spanStyles,
+): Paragraph =
+	paragraphFromIntrinsics(
+		paragraphIntrinsics as NativeParagraphIntrinsics, widthFrom(constraints), maxLines,
+		overflow == TextOverflow.Ellipsis,
 	)
-}

compose/ui/ui-text/src/nativeMain/kotlin/androidx/compose/ui/text/SkiaParagraph.native.kt

@@ -78,6 +78,16 @@ internal interface NativeParagraphOps {
 	fun wordBoundary(offset: Int): IntArray // [start, end]
 
 	fun rebuildAndPaint(canvas: Canvas, color: Color, shadow: Shadow?, decoration: TextDecoration?)
+
+	/** Re-break the ALREADY-SHAPED paragraph at a new width (skiko reuses the
+	   cached shaped runs — no HarfBuzz re-shape). Used to reuse the intrinsics
+	   pass's shaped paragraph for the final layout instead of shaping twice. */
+	fun relayout(width: Float)
+
+	/** Explicitly free the underlying native paragraph. Call when the ops is
+	   discarded (e.g. an intrinsics-only throwaway) so the native memory is
+	   released deterministically instead of waiting for a GC-driven Cleaner. */
+	fun dispose()
 }
 
 /** Bridge to the skiko ops impl (actual in skikoRendererMain). */
@@ -89,6 +99,7 @@ internal expect fun buildParagraphOps(
 	ellipsize: Boolean,
 	density: Float,
 	spanStyles: List<AnnotatedString.Range<SpanStyle>>,
+	placeholders: List<AnnotatedString.Range<Placeholder>>,
 ): NativeParagraphOps
 
 internal class SkiaParagraph(

compose/ui/ui-text/src/nativeMain/kotlin/androidx/compose/ui/text/font/FontFamilyResolver.native.kt

@@ -10,7 +10,7 @@ package androidx.compose.ui.text.font
  *     that-isn't-a-FontListFontFamily" adapter. Upstream's skiko actual routes
  *     `Default`, `SansSerif`, `Serif`, `Monospace`, `Cursive`, and `LoadedFontFamily`
  *     through `SkiaFontLoader` to produce a real `SkTypeface`. Our text renderer
- *     (SdlParagraph / SkiaParagraph) reads `TextStyle.fontFamily` and
+ *     (SkiaParagraph) reads `TextStyle.fontFamily` and
  *     [com.compose.sdl.text.NamedFont] directly to look the family up
  *     against its registered font table, so the resolver's typeface is never
  *     consulted. A no-op adapter (returns an [TypefaceResult.Immutable] wrapping

compose/ui/ui-text/src/nativeMain/kotlin/androidx/compose/ui/text/intl/Locale.native.kt

@@ -64,4 +64,4 @@ actual class Locale actual constructor(languageTag: String) {
 // The OS's most-preferred locale (SDL); en-US before SDL init or on a host that
 // reports none. Cheap: the tag list is cached after the first non-empty read.
 private fun systemCurrentLocale(): Locale =
-	com.compose.sdl.text.systemPreferredLocaleTags().firstOrNull()?.let(::Locale) ?: Locale("en-US")
+	com.compose.sdl.res.preferredLocaleTagsProvider?.invoke()?.firstOrNull()?.let(::Locale) ?: Locale("en-US")

compose/ui/ui-text/src/nativeMain/kotlin/androidx/compose/ui/text/intl/PlatformLocale.native.kt

@@ -17,7 +17,7 @@ internal actual fun createPlatformLocaleDelegate(): PlatformLocaleDelegate =
 	object : PlatformLocaleDelegate {
 		override val current: LocaleList
 			get() {
-				val tags = com.compose.sdl.text.systemPreferredLocaleTags()
+				val tags = com.compose.sdl.res.preferredLocaleTagsProvider?.invoke().orEmpty()
 				return if (tags.isEmpty()) LocaleList(listOf(Locale("en-US")))
 				else LocaleList(tags.map(::Locale))
 			}