Add prompt hygiene architecture pass

docs/prompt-pool-routing-map.md

@@ -605,6 +605,25 @@ Naturalizer field consumption:
 | Insta/OF pair | `softcore_row`, `hardcore_row`, pair options and continuity | `_insta_pair_from_row` |
 | Text fallback | `caption` or `prompt` text | `_text_to_prose` |
 
+### Final Text Hygiene
+
+`prompt_hygiene.py` owns route-agnostic final cleanup. It is intentionally
+small: whitespace, punctuation, empty field labels, adjacent duplicate
+sentences, repeated trigger prefixes, duplicate comma-list items, and dangling
+connectors.
+
+It is called from:
+
+- `prompt_builder.build_prompt`
+- `prompt_builder.build_insta_of_pair`
+- `krea_formatter.format_krea2_prompt`
+- `sdxl_formatter.format_sdxl_prompt`
+- `caption_naturalizer.naturalize_caption`
+
+Do not put semantic fixes in `prompt_hygiene.py`. Sexual action readability,
+POV geometry, clothing state, Krea prose, SDXL weighting, and training-caption
+policy still belong to their route-specific owner.
+
 ## Utility / Workflow Nodes
 
 These do not own prompt pool wording, but they affect execution and review:
@@ -616,6 +635,7 @@ These do not own prompt pool wording, but they affect execution and review:
 | Accumulator | `loop_nodes.py`, `web/accumulator_preview.js` | Stores generated values/images during workflow execution and previews/reorders/deletes them. |
 | Persistent text preview | `loop_nodes.py`, `web/preview_any_text.js` | Stores any value as text and keeps it after workflow reload. |
 | SDXL bucket size | `SxCPSDXLBucketSize` in `__init__.py` | Random/fixed SDXL bucket width and height selection. |
+| Krea2 resolution selector | `SxCPKrea2ResolutionSelector` in `__init__.py` | Krea-compatible width/height and API aspect/resolution helper. |
 
 ## Drift Audit Helper
 
@@ -655,6 +675,7 @@ or pool appears there but not in this map, update the relevant route table.
 | 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`. |
+| Duplicate punctuation, empty labels, repeated trigger, repeated tag item | `prompt_hygiene.py`, then the route-specific formatter if the repeated content is semantic. |
 | Saved profile does not match liked character | Profile save/load path and whether the saved input is row metadata or regenerated slot config. |
 | Accumulator preview behavior wrong | `loop_nodes.py` accumulator methods and `web/accumulator_preview.js`. |