Route stroke commit sequence through adapter

docs/modernization/roadmap.md

@@ -2980,6 +2980,10 @@ Results:
   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.
+- Live `Canvas::stroke_commit` now consumes that semantic commit sequence
+  through retained callbacks, so the legacy body no longer owns the loop order
+  directly. The callbacks still execute the existing OpenGL RTT, texture,
+  sampler, shader, history, and layer mutation work under DEBT-0036.
 - 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.