Keep Krea cast descriptors metadata driven

docs/prompt-pool-routing-map.md

@@ -774,10 +774,10 @@ Krea2 field consumption:
 | Branch | Reads most from | Key functions |
 | --- | --- | --- |
 | Normal single/couple/generic row | `subject_type`, `item`, `pose`, `scene_text`, `expression`, `composition`, `camera_*`, style fields | `krea_normal_formatter.format_normal_row_result` |
-| Normal configured cast/hardcore row | `cast_descriptor_text`, `women_count`, `men_count`, `source_role_graph`, `role_graph`, `item`, `item_axis_values`, `source_composition`, `pov_character_labels` | `krea_configured_cast_formatter.format_configured_cast_result`, `krea_actions.hardcore_action_sentence`, `krea_pov_actions.pov_action_phrase` |
+| Normal configured cast/hardcore row | `cast_descriptor_text` only for cast descriptors, `women_count`, `men_count`, `source_role_graph`, `role_graph`, `item`, `item_axis_values`, `source_composition`, `pov_character_labels` | `krea_configured_cast_formatter.format_configured_cast_result`, `krea_actions.hardcore_action_sentence`, `krea_pov_actions.pov_action_phrase` |
 | Insta/OF pair softcore | `shared_descriptor`, `softcore_row`, `softcore_partner_styling`, options, soft camera fields | `krea_pair_formatter.format_insta_pair_result` |
 | Insta/OF pair hardcore | `hardcore_row`, `shared_cast_descriptors`, `hardcore_clothing_state`, `hardcore_detail_density`, hard camera fields, POV labels | `krea_pair_formatter.format_insta_pair_result`, `krea_actions.hardcore_action_sentence`, `krea_pov_actions.pov_action_phrase`, `krea_clothing.natural_clothing_state` |
-| Plain text fallback | `source_text` only | `_fallback_text_to_krea` |
+| Plain text fallback | `source_text` only, including raw prompt labels such as `Scene:` / `Pose:` | `_fallback_text_to_krea` |
 
 If metadata is connected and `method` says `text(fallback)`, the formatter did
 not parse metadata. That is a wiring/input-hint issue, not a prompt pool issue.

krea_configured_cast_formatter.py

@@ -32,7 +32,6 @@ class KreaConfiguredCastPrompt:
 @dataclass(frozen=True)
 class KreaConfiguredCastDependencies:
     clean: Callable[[Any], str]
-    prompt_field: Callable[[str, str], str]
     sanitize_hardcore_environment_anchors: Callable[[Any], str]
     sanitize_hardcore_axis_values: Callable[[Any], Any]
     sanitize_scene_text_for_cast: Callable[[Any, list[str]], str]
@@ -64,11 +63,7 @@ def format_configured_cast_result(
         men_count = int(row.get("men_count") or 0)
     except (TypeError, ValueError):
         women_count = men_count = 0
-    cast_descriptor_text = (
-        deps.clean(row.get("cast_descriptor_text"))
-        or deps.prompt_field(deps.clean(row.get("prompt")), "Characters")
-        or deps.prompt_field(deps.clean(row.get("prompt")), "Cast descriptors")
-    )
+    cast_descriptor_text = deps.clean(row.get("cast_descriptor_text"))
     pov_labels = deps.pov_labels_from_value(row.get("pov_character_labels"))
     camera = request.camera
     if pov_labels:

krea_formatter.py

@@ -457,7 +457,6 @@ def _krea_normal_row_request_from_row(
 def _krea_configured_cast_dependencies() -> krea_configured_cast_formatter.KreaConfiguredCastDependencies:
     return krea_configured_cast_formatter.KreaConfiguredCastDependencies(
         clean=_clean,
-        prompt_field=_prompt_field,
         sanitize_hardcore_environment_anchors=_sanitize_hardcore_environment_anchors,
         sanitize_hardcore_axis_values=_sanitize_hardcore_axis_values,
         sanitize_scene_text_for_cast=_sanitize_scene_text_for_cast,

tools/prompt_smoke.py

@@ -1414,6 +1414,37 @@ def smoke_krea_normal_row_routes() -> None:
     }
     _expect_krea_normal_route_parity(generic, "krea_normal_generic", "metadata(generic)")
 
+    configured_with_descriptor = _fixture_hardcore_row(
+        prompt="Characters: stale prompt subject, stale body, stale skin, stale hair, stale eyes.",
+        cast_descriptor_text=(
+            "Woman A: 30-year-old adult woman, toned figure, fair skin, red hair, gray eyes; "
+            "Man A: 45-year-old adult man, average figure, tan skin, dark hair"
+        ),
+    )
+    descriptor_prompt, descriptor_method = krea_formatter._normal_row_to_krea(
+        configured_with_descriptor,
+        "balanced",
+        "preserve",
+    )
+    _expect(descriptor_method == "metadata(configured_cast)", "Krea configured-cast route changed method")
+    _expect("30-year-old adult woman" in descriptor_prompt, "Krea configured-cast route lost descriptor metadata")
+    _expect("toned figure" in descriptor_prompt, "Krea configured-cast route lost descriptor body metadata")
+    _expect("stale" not in descriptor_prompt, "Krea configured-cast route parsed stale prompt character labels")
+
+    configured_without_descriptor = _fixture_hardcore_row(
+        prompt="Characters: stale prompt subject, stale body, stale skin, stale hair, stale eyes.",
+        cast_descriptor_text="",
+        cast_descriptors=[],
+    )
+    no_descriptor_prompt, no_descriptor_method = krea_formatter._normal_row_to_krea(
+        configured_without_descriptor,
+        "balanced",
+        "preserve",
+    )
+    _expect(no_descriptor_method == "metadata(configured_cast)", "Krea configured-cast no-descriptor route changed method")
+    _expect("stale" not in no_descriptor_prompt, "Krea configured-cast route should not parse prompt labels without metadata")
+    _expect("private studio room with warm light" in no_descriptor_prompt, "Krea configured-cast route lost structured scene")
+
 
 def smoke_krea_action_details_policy() -> None:
     _expect(