Add renderer resource label contract

docs/modernization/build-inventory.md

@@ -288,7 +288,7 @@ Known local toolchain state:
   backend-owned resource creation, explicit texture usage flags, command order,
   render-pass color/depth/stencil clear intent, scissor state, depth state,
   blend state, texture-slot binding, sampler-state binding, texture-upload byte
-  counts, texture mip-level counts, mipmap-generation commands,
+  counts, texture mip-level counts, resource debug labels, mipmap-generation commands,
   shader-uniform writes, explicit draw descriptor ranges, texture-copy regions,
   readback bounds, frame-capture sources, destination buffer sizes, and
   render-target blit regions, records
@@ -300,8 +300,8 @@ Known local toolchain state:
   automation, including render-pass/depth-clear counts, scissor/depth/blend/
   shader-uniform/texture-bind/sampler-bind/upload/texture-copy/readback/
   frame-capture/blit command and byte totals, trace marker/scope counts,
-  backend resource creation counts, plus draw descriptor vertex/index totals,
-  and is covered by
+  labeled descriptor counts, backend resource creation counts, plus draw
+  descriptor vertex/index totals, and is covered by
   `pano_cli_record_render_smoke` plus
   `pano_cli_record_render_rejects_oversized_target`.
 - `pano_cli simulate-document-history` exposes `pp_document::DocumentHistory`