Extract stroke draw main pass texture dispatch

docs/modernization/debt.md

@@ -529,6 +529,10 @@ agent or engineer to remove them without reconstructing context from chat.
   has regression coverage for retained mixer-state callback ordering through
   `execute_legacy_canvas_stroke_mix_pass(...)`; the live path still owns the
   concrete mixer framebuffer setup and GL capability toggles.
+- 2026-06-13: DEBT-0036 was narrowed again. `Canvas::stroke_draw()` main-pass
+  texture dispatch now has regression coverage through
+  `make_legacy_canvas_stroke_main_pass_texture_dispatch(...)`; the live path
+  still owns the concrete texture objects and sampler state.
 - 2026-06-13: DEBT-0036 was narrowed again. `Canvas::draw_merge` checkerboard
   background shader setup and final merged-texture redraw setup now route
   through `legacy_canvas_draw_merge_services.h`. The retained Canvas path still