Extract row camera policy

docs/prompt-architecture-improvement-plan.md

@@ -116,8 +116,7 @@ Keep here:
 
 Move or isolate later:
 
-- pair assembly and camera mutation helpers that still live in
-  `prompt_builder.py`.
+- pair assembly helpers that still live in `prompt_builder.py`.
 
 Already isolated:
 
@@ -179,8 +178,9 @@ Already isolated:
   side-lying, and front/back group layouts.
 - camera option schema, orbit/Qwen translation, config parsing, camera
   directive text, and camera caption text live in `camera_config.py`;
-  camera-scene prose and coworking composition adaptation live in
-  `scene_camera_adapters.py`; `prompt_builder.py` still owns row mutation.
+  camera-scene prose lives in `scene_camera_adapters.py`; row-level camera
+  insertion, contextual coworking composition mutation, subject-kind detection,
+  and POV suppression live in `row_camera.py`.
 - shared hardcore environment-anchor cleanup lives in
   `hardcore_text_cleanup.py` and normalizes malformed pool joins before metadata
   reaches formatter routes.
@@ -528,6 +528,8 @@ Near-term:
   `/home/ethanfel/.codex/memories/scene-camera-system.md` when editing POV.
 - Keep `scene_camera_adapters.py` as the owner for location-aware camera prose;
   add new location families there one at a time.
+- Keep `row_camera.py` as the owner for inserting camera/scene directives into
+  generated rows, including POV suppression of normal third-person camera text.
 
 Medium-term: