Extract preview main live sample wrapping

docs/modernization/debt.md

@@ -205,6 +205,10 @@ agent or engineer to remove them without reconstructing context from chat.
   now routes the mix-pass execution request through
   `make_stroke_draw_mix_execution_request(...)`; the retained path still owns
   the concrete framebuffer, viewport, and draw ordering.
+- 2026-06-14: DEBT-0036 was narrowed again. `NodeStrokePreview::make_stroke_draw_immediate_main_live_pass_request()`
+  now routes sample shader setup through
+  `execute_stroke_draw_immediate_main_live_sample_pass(...)`; the retained path
+  still owns the concrete preview frame mutation and copy behavior.
 - 2026-06-13: DEBT-0036 was narrowed again. `Canvas::draw_merge()` temporary
   composite setup now routes through `execute_canvas_draw_merge_temporary_composite(...)`;
   setup, sampler, texture, draw, and unbind callbacks still remain retained in

docs/modernization/tasks.md

@@ -1901,7 +1901,7 @@ cmake --build --preset windows-msvc-default --config Debug --target PanoPainter
 
 ### STR-042 - Extract Preview Main Live Sample Callback Wrapping
 
-Status: Ready
+Status: Done
 Score: no score movement
 Debt: `DEBT-0036`
 Scope: `src/node_stroke_preview.cpp`, `tests/paint_renderer/compositor_tests.cpp`
@@ -1912,6 +1912,8 @@ Move the remaining `NodeStrokePreview::make_stroke_draw_immediate_main_live_pass
 sample/copy callback wrapping into retained helpers so the request builder only
 forwards concrete preview state.
 
+Closeout: `2053c55b`
+
 Done Checks:
 
 - `make_stroke_draw_immediate_main_live_pass_request()` no longer owns the