diff --git a/docs/modernization/debt.md b/docs/modernization/debt.md
index b9144c0..45f1a51 100644
--- a/docs/modernization/debt.md
+++ b/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_final_plane_composite()`
+  now routes the retained final-plane composite execution through
+  `make_canvas_draw_merge_final_plane_composite_execution(...)`; the wrapper
+  still owns request assembly and dispatch.
 - 2026-06-14: `DEBT-0036` was narrowed again. `execute_canvas_draw_merge_plane_dispatch()`
   now routes the per-plane framebuffer setup and unbind handling through
   `execute_canvas_draw_merge_plane_setup(...)` plus
diff --git a/docs/modernization/tasks.md b/docs/modernization/tasks.md
index a9f149d..7444952 100644
--- a/docs/modernization/tasks.md
+++ b/docs/modernization/tasks.md
@@ -2262,10 +2262,11 @@ ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_composito
 
 ### STR-054 - Extract Draw Merge Final Plane Composite Execution
 
-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`
+Closeout: `e98c8f48`
 
 Goal: