Record STR-045 closeout hash

docs/modernization/debt.md

@@ -18,6 +18,11 @@ agent or engineer to remove them without reconstructing context from chat.
 
 ## Recent Reductions
 
+- 2026-06-14: `DEBT-0036` was narrowed again. `execute_stroke_preview_final_composite_pass()`
+  now routes the retained final-composite request construction through
+  `make_stroke_preview_final_composite_request(...)`; the preview path still
+  owns the concrete shader setup, sampler binding, input binding, and draw
+  callback.
 - 2026-06-14: `DEBT-0036` was narrowed again. `NodeStrokePreview::stroke_draw_mix()`
   now routes the retained preview mix request construction through
   `make_stroke_preview_mix_execution_request(...)`; the preview path still

docs/modernization/tasks.md

@@ -1990,6 +1990,37 @@ ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_composito
 cmake --build --preset windows-msvc-default --config Debug --target PanoPainter
 ```
 
+### STR-045 - Extract Preview Final Composite Request Construction
+
+Status: Done
+Score: no score movement
+Debt: `DEBT-0036`
+Scope: `src/node_stroke_preview.cpp`, `tests/paint_renderer/compositor_tests.cpp`
+
+Goal:
+
+Move the remaining `execute_stroke_preview_final_composite_pass()` request
+construction into a retained helper so the final preview composite wrapper
+keeps only dispatch and copy handling.
+
+Done Checks:
+
+- `execute_stroke_preview_final_composite_pass()` no longer owns the
+  final-composite request construction inline.
+- Existing preview final-composite executor coverage still proves the helper
+  preserves shader setup, sampler binding, input binding, and draw ordering.
+- `docs/modernization/debt.md` records the reduced preview final-composite
+  surface.
+
+Closeout: `538441a5`
+
+Validation:
+
+```powershell
+ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_compositor|pp_paint_renderer_stroke_execution" --output-onfailure
+cmake --build --preset windows-msvc-default --config Debug --target PanoPainter
+```
+
 ### STR-010 - Extract Remaining Draw Merge Composite Orchestration
 
 ### STR-016 - Extract Draw Merge Layer Composite Execution