Use metadata for scene camera profiles

docs/prompt-pool-routing-map.md

@@ -653,6 +653,9 @@ Camera handling:
 Current camera-aware scene adapter:
 
 - Scene profiles live in `scene_camera_adapters.SCENE_CAMERA_PROFILES`.
+- Profile resolution is metadata-first: explicit `scene_camera_profile_key`,
+  selected `scene_entry` profile keys, and theme metadata are preferred before
+  text matching.
 - Coworking/business-cafe/office scenes and classical library/book-stack scenes
   are detected by `scene_camera_profile`.
 - Location themes preserve `theme` on configs and selected scene entries, and