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