Extract pad stroke face orchestration

docs/modernization/debt.md

@@ -86,9 +86,10 @@ agent or engineer to remove them without reconstructing context from chat.
   `execute_legacy_canvas_stroke_main_pass_frame_callbacks(...)`; the retained
   path still owns the concrete shader, sampler, and framebuffer wiring.
 - 2026-06-13: DEBT-0036 was narrowed again. `Canvas::stroke_draw()` pad-face
-  orchestration remains retained and is next targeted for helper extraction;
-  pad destination dispatch already routes through a retained helper, but the
-  pad face loop and copy timing still live in `Canvas`.
+  orchestration now routes through
+  `execute_legacy_canvas_stroke_pad_face_callbacks(...)`; the retained path
+  still owns the concrete brush shape, destination dispatch, and framebuffer
+  wiring.
 - 2026-06-13: DEBT-0036 was narrowed again. `Canvas::stroke_draw_samples()`
   now routes polygon triangulation, sample-point assembly, and retained
   destination-copy / upload / draw helper handoff through

docs/modernization/tasks.md

@@ -954,7 +954,7 @@ ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_stroke_ex
 
 ### STR-008 - Extract Pad Stroke Face Orchestration
 
-Status: Ready
+Status: Done
 Score: +1 renderer boundary and OpenGL parity
 Debt: `DEBT-0036`
 Scope: `src/canvas.cpp`, `src/legacy_canvas_stroke_execution_services.h`,
@@ -980,3 +980,9 @@ Validation:
 ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_stroke_execution" --output-on-failure
 & 'C:\Program Files\Microsoft Visual Studio\18\Community\MSBuild\Current\Bin\MSBuild.exe' out\build\windows-msvc-default\tests\pp_paint_renderer_stroke_execution_tests.vcxproj /p:Configuration=Debug /p:Platform=x64
 ```
+
+### Completed Task Log
+
+| Date | Task | Score | Validation | Commit |
+| --- | --- | ---: | --- | --- |
+| 2026-06-13 | STR-008 | +1 renderer boundary and OpenGL parity | `ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_stroke_execution" --output-on-failure`; `MSBuild.exe out\build\windows-msvc-default\tests\pp_paint_renderer_stroke_execution_tests.vcxproj /p:Configuration=Debug /p:Platform=x64` | pending |