Extract character slot policy

docs/prompt-pool-routing-map.md

@@ -74,6 +74,7 @@ Core helper ownership:
 | `camera_config.py` | Camera option schema, direct/orbit/Qwen camera JSON builders, camera config parsing, plain camera directive text, and camera caption labels. |
 | `character_config.py` | Character choice lists, descriptor detail/presence/slot-seed normalization, characteristic-list JSON builders/parsers, eye labels, hair config builders/parsers, and hair phrase helpers. |
 | `character_profile.py` | Character manual-detail config, profile name/path policy, profile JSON normalization, descriptor assembly, save/load/rename/delete operations, fallback profile loading, and context override application. |
+| `character_slot.py` | Character slot JSON construction, character-cast parsing, slot normalization, slot summary text, slot expression override policy, slot seed helpers, and slot figure/ethnicity normalization. |
 | `filter_config.py` | Ethnicity/filter choices, advanced filter JSON, ethnicity-list JSON, filter parsing, and ethnicity normalization used by builder and character routes. |
 | `generation_profile_config.py` | Generation profile presets, profile option overrides, trigger policy, expression/pose/clothing config normalization, and profile config parsing. |
 | `seed_config.py` | Seed axis salts/aliases, seed mode choices, global/axis lock JSON builders, seed config parsing, row seed math, and deterministic axis RNG construction. |
@@ -389,8 +390,9 @@ Important behavior:
 
 Edit targets:
 
-- Appearance field generation: `_context_from_character_slot`,
-  `_character_context_for_label`; character-slot label assignment:
+- Character slot JSON/parsing/summary: `character_slot.py`; appearance field
+  generation: `_context_from_character_slot`, `_character_context_for_label`;
+  character-slot label assignment:
   `cast_context.character_slot_label_map`; pair cast descriptor entry assembly:
   `pair_cast.cast_descriptor_entries`.
 - Profile save/load: `SxCPCharacterProfileSave`,