Record STR-050 closeout hash

docs/modernization/debt.md

@@ -18,6 +18,10 @@ agent or engineer to remove them without reconstructing context from chat.
 
 ## Recent Reductions
 
+- 2026-06-14: `DEBT-0036` was narrowed again. `Canvas::draw_merge_branch_orchestration()`
+  now routes the temporary erase, temporary paint, texture, and blend dispatch
+  bodies through retained helpers inside `execute_canvas_draw_merge_branch_body(...)`;
+  the branch body still owns the selection guard and helper dispatch.
 - 2026-06-14: `DEBT-0036` was narrowed again. `execute_canvas_draw_merge_branch_body()`
   now routes the temporary erase, texture, and blend dispatch bodies through
   `make_canvas_draw_merge_temporary_erase_dispatch(...)`,

docs/modernization/tasks.md

@@ -2142,7 +2142,7 @@ ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_composito
 
 ### STR-050 - Extract Draw Merge Temporary Composite Dispatch Helpers
 
-Status: Ready
+Status: Done
 Score: no score movement
 Debt: `DEBT-0036`
 Scope: `src/canvas.cpp`, `src/legacy_canvas_draw_merge_services.h`, `tests/paint_renderer/compositor_tests.cpp`
@@ -2162,6 +2162,8 @@ Done Checks:
 - `docs/modernization/debt.md` records the reduced draw-merge temporary
   composite surface.
 
+Closeout: `27d34f2f`
+
 Validation:
 
 ```powershell