Promote stroke draw samples request task

docs/modernization/tasks.md

@@ -1923,6 +1923,34 @@ ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_composito
 | --- | --- | ---: | --- | --- |
 | 2026-06-13 | STR-033 | +1 renderer boundary and OpenGL parity | `ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_compositor" --output-onfailure`; `& 'C:\Program Files\Microsoft Visual Studio\18\Community\MSBuild\Current\Bin\MSBuild.exe' out\build\windows-msvc-default\tests\pp_paint_renderer_compositor_tests.vcxproj /p:Configuration=Debug /p:Platform=x64` | `666c4dd3` |
 
+### STR-034 - Extract Stroke Draw Samples Request Assembly
+
+Status: Ready
+Score: +1 renderer boundary and OpenGL parity
+Debt: `DEBT-0036`
+Scope: `src/canvas.cpp`, `src/legacy_canvas_stroke_execution_services.h`, `tests/paint_renderer/compositor_tests.cpp`
+
+Goal:
+
+Move the remaining `Canvas::stroke_draw_samples()` request assembly into a
+retained helper so the callsite keeps only destination dispatch and result
+handling.
+
+Done Checks:
+
+- `Canvas::stroke_draw_samples()` no longer owns the face-sample request
+  assembly inline.
+- Regression coverage proves the request helper preserves destination-copy
+  behavior and brush upload/draw ordering.
+- `docs/modernization/debt.md` records the reduced stroke-sample request
+  surface.
+
+Validation:
+
+```powershell
+ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_stroke_execution" --output-onfailure
+```
+
 ### STR-012 - Extract Preview Final Composite Orchestration
 
 Status: Done