Share retained stroke texture binding helpers

docs/modernization/roadmap.md

@@ -3111,6 +3111,10 @@ Results:
   binding, checkerboard/background capture wrapping, and final preview
   copy-back now share named local helpers, while mixer state execution and
   per-sample GL ordering remain in the preview node.
+- `Canvas::stroke_draw` main, pad, and dual live-pass texture-input
+  binding/unbinding intent now shares retained stroke execution helpers, while
+  sampler binding, concrete GL object mapping, framebuffer ownership, and final
+  draw execution 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