Extract SDXL tag policy

docs/prompt-pool-routing-map.md

@@ -123,6 +123,7 @@ Core helper ownership:
 | `node_tooltips.py` | Node input tooltip inventory, node-specific overrides, dynamic-input fallback rules, and tooltip injection installer used by `__init__.py`. |
 | `server_routes.py` | Pure payload handlers for profile-save and accumulator server endpoints, used by ComfyUI routes and smoke tests without importing ComfyUI. |
 | `sdxl_presets.py` | SDXL formatter profiles, style presets, quality presets, default negative prompt, and metadata-family tag hints used by the SDXL formatter and node choice lists. |
+| `sdxl_tag_policy.py` | SDXL tag splitting, tag-key dedupe, count inference, character descriptor tags, metadata-family/camera/explicit helper tags, and route dependency assembly used by `sdxl_formatter.py` and `sdxl_tag_routes.py`. |
 | `caption_policy.py` | Caption naturalizer policy data and helpers: caption profiles, style tails, item labels, metadata-family caption labels, detail/style-policy normalization, clothing cleanup, and composition cleanup. |
 
 ## Node IO Map
@@ -158,7 +159,7 @@ These recipes identify the intended road before editing prompt text.
 | Force a custom frame/composition | `SxCP Composition Pool` or `SxCP Location Theme` -> builder/pair | `combine_mode=replace` to force; `add` to mix | `_composition_pool`, `row_location.apply_composition_config_to_legacy_row`, Krea composition phrase |
 | Use Qwen/orbit camera geometry | Qwen/orbit node -> camera_config -> builder/pair | For pair, use `softcore_camera_config` and/or `hardcore_camera_config`; set mode from config in options | `_camera_config_with_mode`, `_camera_directive`, `_camera_scene_directive_for_context` |
 | Use Krea2 for only hard prompt from a pair | Pair `metadata_json` -> Krea2 Formatter | `target=hardcore`, `input_hint=metadata_json` or auto with metadata connected | `_insta_pair_to_krea`, hard row fields |
-| Convert builder output to SDXL tags | Builder/pair metadata -> SDXL Formatter | Use metadata input; set `target`; select style and quality preset | `_row_core_tags`, `_soft_tags`, `_hard_tags` |
+| Convert builder output to SDXL tags | Builder/pair metadata -> SDXL Formatter | Use metadata input; set `target`; select style and quality preset | `sdxl_tag_routes.py`, `sdxl_tag_policy.py`, compatibility wrappers `_row_core_tags` / `_soft_tags` / `_hard_tags` |
 | Save/reuse character | Slot/profile nodes -> Profile Save/Load -> slot/builder | Save from the row/profile data you want, not a freshly randomized disconnected route | `character_profile.py`, `web/profile_buttons.js`, profile JSON |
 
 ## Seed Axes
@@ -705,6 +706,9 @@ not parse metadata. That is a wiring/input-hint issue, not a prompt pool issue.
   `sdxl_tag_routes.hard_tags_result` through compatibility wrappers.
 - Normal metadata row: `sdxl_tag_routes.row_core_tags_result` through the
   `_row_core_tags` compatibility wrapper.
+- Tag mechanics: `sdxl_tag_policy.py` supplies splitting, dedupe, count,
+  character, metadata-family, camera, and explicit helper tags to the route
+  layer.
 - Plain text fallback: `_fallback_text_to_sdxl`.
 
 Use this route for style triggers, weighted tag style, nude weighting, formatter
@@ -714,9 +718,9 @@ SDXL field consumption:
 
 | Branch | Reads most from | Key functions |
 | --- | --- | --- |
-| Normal metadata | cast descriptors, age/body/skin/hair/eyes, `action_family`, `position_family`, `position_keys`, item, role graph, scene, camera config/directive | `sdxl_tag_routes.row_core_tags_result`, `_metadata_family_tags`, `_camera_tags` |
+| Normal metadata | cast descriptors, age/body/skin/hair/eyes, `action_family`, `position_family`, `position_keys`, item, role graph, scene, camera config/directive | `sdxl_tag_routes.row_core_tags_result`, `sdxl_tag_policy.metadata_family_tags`, `sdxl_tag_policy.camera_tags` |
 | Pair softcore | `softcore_row`, pair partner styling, root soft camera config | `sdxl_tag_routes.soft_tags_result` |
-| Pair hardcore | `hardcore_row`, `action_family`, `position_family`, `position_keys`, `hardcore_clothing_state`, hard camera fields, hard prompt text | `sdxl_tag_routes.hard_tags_result`, `_metadata_family_tags` |
+| Pair hardcore | `hardcore_row`, `action_family`, `position_family`, `position_keys`, `hardcore_clothing_state`, hard camera fields, hard prompt text | `sdxl_tag_routes.hard_tags_result`, `sdxl_tag_policy.metadata_family_tags` |
 | Text fallback | `source_text`, preserve-trigger setting, shared field-label stripping | `_fallback_text_to_sdxl` |
 
 SDXL is the right place for model trigger handling, tag ordering, weight syntax,
@@ -883,7 +887,7 @@ pair metadata through the core Python APIs, then verifies:
 | Man appears described in POV | POV labels, `krea_cast.cast_prose` omit labels, `krea_pov_actions.pov_action_phrase`. |
 | Camera prompt missing from Krea2 | Row `camera_directive` / `camera_scene_directive`, then Krea `_camera_phrase`. |
 | Trigger missing in Krea2 fallback | `format_krea2_prompt` preserve-trigger fallback behavior. |
-| SDXL tags too weak/wrong style | `sdxl_formatter.py` presets and `_row_core_tags` / `_soft_tags` / `_hard_tags`. |
+| SDXL tags too weak/wrong style | `sdxl_presets.py`, `sdxl_tag_policy.py`, then `sdxl_tag_routes.py`; formatter wrappers `_row_core_tags` / `_soft_tags` / `_hard_tags` should stay compatibility-only. |
 | Duplicate punctuation, empty labels, repeated trigger, repeated tag item | `prompt_hygiene.py`, then the route-specific formatter if the repeated content is semantic. |
 | Bed/sheet/couch or malformed surface wording leaks into hardcore prompts | `hardcore_text_cleanup.py`, then the relevant category pool/template. |
 | Saved profile does not match liked character | Profile save/load path and whether the saved input is row metadata or regenerated slot config. |