Add renderer texture transition contract

docs/modernization/build-inventory.md

@@ -289,16 +289,16 @@ Known local toolchain state:
   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, resource debug labels, mipmap-generation commands,
-  shader-uniform writes, explicit draw descriptor ranges, texture-copy regions,
+  texture-state transitions, shader-uniform writes, explicit draw descriptor ranges, texture-copy regions,
   readback bounds, frame-capture sources, destination buffer sizes, and
   render-target blit regions, records
   render-pass-clear/scissor/depth/blend/shader-uniform/texture-bind/
-  sampler-bind/draw/upload/mipmap-generation/texture-copy/readback/
+  sampler-bind/draw/upload/mipmap-generation/texture-transition/texture-copy/readback/
   frame-capture/blit commands, draw mesh inputs, explicit draw ranges, and
   records trace markers and scopes without a window or GL context.
 - `pano_cli record-render` exposes the recording renderer through JSON
   automation, including render-pass/depth-clear counts, scissor/depth/blend/
-  shader-uniform/texture-bind/sampler-bind/upload/mipmap-generation/texture-copy/readback/
+  shader-uniform/texture-bind/sampler-bind/upload/mipmap-generation/texture-transition/texture-copy/readback/
   frame-capture/blit command and byte totals, trace marker/scope counts,
   labeled descriptor counts, backend resource creation counts, plus draw
   descriptor vertex/index totals, and is covered by

docs/modernization/roadmap.md

@@ -419,7 +419,7 @@ mesh, readback bounds, command context, render device, shader program
 descriptor, mesh, render target, readback byte-size helpers,
 texture mip-level validation, resource debug-label validation,
 texture-upload/readback command validation,
-mipmap-generation command validation, frame-capture byte-size helpers,
+mipmap-generation command validation, texture-state transition validation, frame-capture byte-size helpers,
 frame-capture command validation, render-target blit validation, texture-slot
 binding validation, blend-state validation, scissor-state validation,
 depth-state validation, trace marker/scope validation, sampler-state validation,
@@ -833,13 +833,13 @@ Results:
   renderer-owned resource factory and
   command-order/render-pass-clear/scissor-state/depth-state/blend-state/
   texture-usage/texture-bind/sampler-bind/shader-uniform/texture-upload/
-  mipmap-generation/readback/frame-capture/blit validation plus explicit draw
+  mipmap-generation/texture-transition/readback/frame-capture/blit validation plus explicit draw
   descriptor and texture-copy validation; it creates validated textures,
   render targets, shaders, meshes, and readback buffers with validated debug
   labels, then records commands, trace markers/scopes, render-pass
   color/depth/stencil clear intent, scissor state, depth state, blend state,
   shader uniform writes, texture/sampler binds, draw mesh inputs, explicit draw
-  ranges, texture uploads/mipmap generations/copies/readbacks, frame captures,
+  ranges, texture uploads/mipmap generations/state transitions/copies/readbacks, frame captures,
   and render-target blits, giving automation a backend-neutral render path that
   does not require a window or GL context.
 - `pano_cli record-render` exercises that headless recording renderer and emits
@@ -847,7 +847,7 @@ Results:
   name, trace marker/scope and draw summary, labeled descriptor counts,
   render-pass/depth-clear counts, and draw
   descriptor vertex/index totals, scissor/depth/blend-state plus
-  shader-uniform/texture/sampler-bind/upload/mipmap-generation/texture-copy/readback/
+  shader-uniform/texture/sampler-bind/upload/mipmap-generation/texture-transition/texture-copy/readback/
   frame-capture/blit command/byte totals for agent automation, with an
   expected-failure smoke for oversized render/readback targets.
 - `pano_cli simulate-document-history` exercises pure document history