Plan stroke preview composite sequence

docs/modernization/debt.md

@@ -18,6 +18,12 @@ agent or engineer to remove them without reconstructing context from chat.
 
 ## Recent Reductions
 
+- 2026-06-13: DEBT-0036 was narrowed again. `NodeStrokePreview` final preview
+  background capture, composite input binding/draw, and preview texture copy now
+  route through `legacy_canvas_stroke_preview_services.h`, with semantic preview
+  composite ordering and texture-slot intent covered by `pp_paint_renderer`
+  tests. Static preview RTT/texture ownership, checkerboard shader setup,
+  framebuffer copies, and retained GL callbacks remain in legacy preview code.
 - 2026-06-13: DEBT-0036 was narrowed again. Stroke sample copy bounds, live
   face dirty-box accumulation, and preview padding region math now live as
   tested `pp_paint_renderer` planners and are consumed by retained Canvas and

docs/modernization/roadmap.md

@@ -1359,6 +1359,10 @@ callback execution under `DEBT-0036`. Stroke sample copy bounds, live face
 dirty-box accumulation, and preview padding region math now live as tested
 `pp_paint_renderer` planners while retained Canvas/preview code still owns GL
 ordering, RTT/texture binding, history mutation, and final dirty state storage.
+`NodeStrokePreview` also now consumes a tested preview composite sequence plan
+for mixer intent, and retained preview background capture, composite input
+binding/draw, and preview texture copy are centralized behind
+`legacy_canvas_stroke_preview_services.h`.
 It also owns renderer API texture-format to
 OpenGL internal/pixel/component token mapping, including depth-stencil formats,
 for future backend texture objects. `Texture2D` 2D texture binding, upload,