Route remaining shader setup through helpers

docs/modernization/roadmap.md

@@ -3068,6 +3068,11 @@ Results:
 - Scrollbar, text-input, and VR frame/cursor/controller shader setup now share
   retained UI/preview helpers, while geometry, blend/depth state,
   sampler/texture binding, and draw execution remain retained.
+- Remaining live shader setup outside retained helper headers now shares
+  retained helper surfaces for canvas modes, equirect layer export,
+  `NodeCanvas` debug dirty bounds, atlas image drawing, and text drawing, while
+  geometry, framebuffer flow, texture/sampler binding, blend/depth state,
+  readback, and draw execution remain retained.
 - Remaining simple color, hue, color-quad, grid heightmap, and pen/line
   preview shader setup in UI nodes and canvas modes now shares retained helper
   surfaces, while geometry, texture/sampler binding, blend/depth state,