Record STR-051 branch dispatch object closeout

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. `execute_canvas_draw_merge_branch_body()`
+  now routes the branch dispatch object assembly through
+  `make_canvas_draw_merge_branch_dispatch(...)`; the branch body still owns the
+  selection guard and dispatch wiring.
 - 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(...)`;

docs/modernization/tasks.md

@@ -2179,20 +2179,20 @@ Scope: `src/canvas.cpp`, `src/legacy_canvas_draw_merge_services.h`, `tests/paint
 
 Goal:
 
-Move the remaining temporary erase, texture, and blend dispatch bodies used by
-`execute_canvas_draw_merge_branch_body()` into retained helpers so the branch
+Move the remaining branch dispatch object assembly used by
+`execute_canvas_draw_merge_branch_body()` into a retained helper so the branch
 body keeps only helper dispatch.
 
 Done Checks:
 
-- `execute_canvas_draw_merge_branch_body()` no longer owns the temporary erase,
-  texture, and blend dispatch bodies inline.
-- Regression coverage proves the extracted helpers preserve temporary erase,
-  texture, and blend execution order.
+- `execute_canvas_draw_merge_branch_body()` no longer owns the branch dispatch
+  object assembly inline.
+- Regression coverage proves the extracted helper preserves temporary erase,
+  temporary paint, texture, and blend execution order.
 - `docs/modernization/debt.md` records the reduced draw-merge branch-dispatch
   surface.
 
-Closeout: `27d34f2f`
+Closeout: `8e1aea9a`
 
 Validation: