Validate OpenGL texture binding slots

docs/modernization/build-inventory.md

@@ -275,13 +275,16 @@ Known local toolchain state:
   blit filters into GL-facing planned command data while rejecting unsupported
   enum tokens before a real GL context is needed. It also plans whole recorded
   command streams, preserving per-command planned data while counting render
-  passes, draws, shader binds, shader uniforms, texture uploads, mipmap
-  generation, texture transitions, texture copies, texture readbacks, frame
-  captures, passthrough commands, trace commands, unsupported commands, and
-  render-pass ordering errors such as state changes outside a pass, nested
-  passes, and unclosed passes. It also validates executable command
-  dependencies, including shader-before-uniform and shader-plus-mesh before
-  draw within each render pass.
+  passes, draws, shader binds, shader uniforms, texture/sampler binds, texture
+  uploads, mipmap generation, texture transitions, texture copies, texture
+  readbacks, frame captures, passthrough commands, trace commands, unsupported
+  commands, and render-pass ordering errors such as state changes outside a
+  pass, nested passes, and unclosed passes. It also validates executable
+  command dependencies, including shader-before-uniform and shader-plus-mesh
+  before draw within each render pass, and rejects invalid texture/sampler bind
+  slots in malformed recorded streams. `pano_cli record-render` emits the
+  OpenGL plan texture/sampler bind counts so automation can assert backend
+  interpretation without an OpenGL context.
   Desktop VR drawing also consumes backend-owned scissor/depth/blend state,
   depth clear masks, active texture units, and fallback 2D texture unbind
   targets while retaining the existing VR SDK/platform bridge shape.