Move canvas resource formats to renderer gl

docs/modernization/build-inventory.md

@@ -209,6 +209,11 @@ Known local toolchain state:
   defaults, viewport/clear-state queries, blend/depth/scissor state, color
   clear masks, active texture units, fallback 2D texture unbind targets, copy
   targets, and RGBA8 render-target formats.
+  Canvas resource setup also consumes backend-owned stroke-buffer
+  RGBA8/RGBA16F/RGBA32F formats, flood-fill texture upload format/type,
+  brush/stencil/mix sampler filters and wraps, and image channel-count texture
+  formats for cube-strip imports. Clamp-to-border sampler wrap is now part of
+  the backend capability catalog and test coverage.
 - `windows-msvc-vcpkg-headless` validates manifest install/configure/build/test
   for the current headless component matrix; see DEBT-0007 for remaining app
   and platform triplet migration.