Route stroke dirty mutation through helper

docs/modernization/debt.md

@@ -18,6 +18,10 @@ agent or engineer to remove them without reconstructing context from chat.
 
 ## Recent Reductions
 
+- 2026-06-13: DEBT-0036 was narrowed again. `Canvas::stroke_draw` current and
+  dual stroke dirty-box mutation now routes through the retained stroke
+  execution helper; framebuffer binding, shader uniform timing, sampler/texture
+  binding, and live draw execution remain retained.
 - 2026-06-13: DEBT-0036 was narrowed again. `Canvas::stroke_commit` retained
   commit input texture/sampler binding, erase/composite draw dispatch,
   committed-copy-to-dilate-source, and dilate draw now route through

docs/modernization/roadmap.md

@@ -3100,6 +3100,10 @@ Results:
   the retained stroke execution helper, while framebuffer binding, shader
   uniform timing, dirty-box mutation, sampler/texture binding, and live draw
   execution remain retained.
+- `Canvas::stroke_draw` current and dual stroke dirty-box mutation now shares
+  the retained stroke execution helper, while framebuffer binding, shader
+  uniform timing, sampler/texture binding, and live draw execution remain
+  retained.
 - Remaining simple color, hue, color-quad, grid heightmap, and pen/line
   preview shader setup in UI nodes and canvas modes now shares retained helper
   surfaces, while geometry, texture/sampler binding, blend/depth state,

docs/modernization/tasks.md

@@ -509,6 +509,12 @@ Done Checks:
 
 Progress Notes:
 
+- 2026-06-13: `Canvas::stroke_draw` current and dual stroke dirty-box mutation
+  now routes through `legacy_canvas_stroke_execution_services.h`; framebuffer
+  binding, shader uniform timing, sampler/texture binding, and draw execution
+  remain local to Canvas. Next slice should wrap the retained per-face
+  framebuffer/sample callback ordering without rewriting the new pad-pass or
+  commit executors.
 - 2026-06-13: `Canvas::stroke_commit` now routes retained commit input
   texture/sampler binding, erase/composite draw dispatch, committed-copy, and
   dilate draw through `legacy_canvas_stroke_commit_services.h`; history