Plan stroke commit sequencing

docs/modernization/debt.md

@@ -18,6 +18,14 @@ agent or engineer to remove them without reconstructing context from chat.
 
 ## Recent Reductions
 
+- 2026-06-13: DEBT-0036 was narrowed again. `pp_paint_renderer` now owns a
+  tested `CanvasStrokeCommitSequencePlan` for `Canvas::stroke_commit`
+  readback, dirty-state, scratch-copy, erase/composite draw, committed-copy,
+  dilate order, and commit texture slot roles. A retained
+  `legacy_canvas_stroke_commit_services.h` adapter skeleton consumes the
+  semantic plan through callbacks, but the live Canvas commit body still owns
+  history/layer mutation, RTT/framebuffer binding, sampler binding, and final
+  OpenGL execution until the adapter is wired.
 - 2026-06-13: DEBT-0036 was narrowed again. `NodeStrokePreview::stroke_draw_mix`
   now reuses `legacy_canvas_stroke_composite_services.h` for mixer-pass
   `kShader::CompDraw` binding and composite/pattern/dual uniform writes.

docs/modernization/roadmap.md

@@ -2974,6 +2974,12 @@ Results:
   `pp_paint_renderer` stroke-feedback plan to decide whether framebuffer fetch
   supplies destination color or the legacy OpenGL path must copy the target
   texture before drawing.
+- Canvas stroke commit ordering now has a tested `pp_paint_renderer`
+  `CanvasStrokeCommitSequencePlan` for history readback, dirty-state update,
+  scratch copies, erase/composite draw selection, dilate, and texture slot
+  roles. A retained commit adapter skeleton consumes that semantic sequence,
+  while the live Canvas body still owns history/layer mutation and OpenGL
+  execution until the next wiring slice.
 - Canvas thumbnail layer blending now uses the same canvas destination-feedback
   plan for framebuffer-fetch versus texture-copy decisions; the thumbnail draw
   itself still executes through retained OpenGL canvas code under DEBT-0036.

docs/modernization/tasks.md

@@ -507,6 +507,13 @@ Done Checks:
 - Retained stroke OpenGL execution is deleted or isolated as an OpenGL backend
   implementation.
 
+Progress Notes:
+
+- 2026-06-13: `pp_paint_renderer` owns tested Canvas stroke commit sequencing
+  and commit texture slot intent. Next slice should wire
+  `legacy_canvas_stroke_commit_services.h` into `Canvas::stroke_commit` while
+  keeping history/layer mutation local.
+
 ### LATER-004 - Remove Catch-All Platform Legacy Adapter
 
 Status: Blocked