Share retained stroke face framebuffer helper

docs/modernization/debt.md

@@ -18,6 +18,11 @@ agent or engineer to remove them without reconstructing context from chat.
 
 ## Recent Reductions
 
+- 2026-06-13: DEBT-0036 was narrowed again. `Canvas::stroke_draw` main and
+  dual live-pass per-face framebuffer begin/end execution plus pad-face array
+  assembly now route through `legacy_canvas_stroke_execution_services.h`;
+  shader activation timing, texture/sampler binding, framebuffer ownership, pad
+  execution, and final OpenGL draw remain retained in `Canvas`.
 - 2026-06-13: DEBT-0036 was narrowed again. `Canvas::stroke_draw` main and
   dual live-pass dirty semantics now route through
   `execute_legacy_canvas_stroke_live_pass_with_dirty_tracking(...)` in

docs/modernization/roadmap.md

@@ -3098,6 +3098,11 @@ Results:
   dual-pass dirty preservation, while shader timing, sampler/texture binding,
   framebuffer ownership, pad execution, and final OpenGL draw ordering remain
   in the legacy Canvas path.
+- `Canvas::stroke_draw` main and dual live-pass per-face framebuffer
+  bind/unbind execution now shares one retained helper, and pad-face array
+  assembly now shares one retained utility, while shader activation timing,
+  texture/sampler binding, framebuffer ownership, pad execution, and final
+  OpenGL draw ordering remain in the legacy Canvas path.
 - `Canvas::stroke_draw` pad-pass destination bind/copy/unbind ordering now
   shares the retained stroke execution helper callback surface, while shader
   setup, pad color selection, framebuffer ownership, and final OpenGL draw

docs/modernization/tasks.md

@@ -509,6 +509,13 @@ Done Checks:
 
 Progress Notes:
 
+- 2026-06-13: `Canvas::stroke_draw` main and dual live-pass per-face
+  framebuffer begin/end execution plus pad-face array assembly now route
+  through `legacy_canvas_stroke_execution_services.h`; shader activation
+  timing, texture/sampler binding, framebuffer ownership, and final draw
+  execution remain local to `Canvas`. Next slice should target the remaining
+  pass-level texture binding or final composite setup without reopening the
+  newer pad, dirty, or commit helpers.
 - 2026-06-13: `Canvas::stroke_draw` current and dual stroke per-face
   framebuffer/sample callback ordering now routes through
   `legacy_canvas_stroke_execution_services.h`; framebuffer ownership, shader