Extract row rendering policy

tools/prompt_smoke.py

@@ -57,6 +57,7 @@ import row_generation  # noqa: E402
 import row_item  # noqa: E402
 import row_location  # noqa: E402
 import row_pools  # noqa: E402
+import row_rendering  # noqa: E402
 import row_route_metadata  # noqa: E402
 import server_routes  # noqa: E402
 import sdxl_formatter  # noqa: E402
@@ -1402,6 +1403,73 @@ def smoke_row_normalization_policy() -> None:
     _expect_no_duplicate_comma_items("row_normalization.pair.hard_row_negative", pair["hardcore_row"].get("negative_prompt"))
 
 
+def smoke_row_rendering_policy() -> None:
+    _expect(pb.SINGLE_TEMPLATE == row_rendering.SINGLE_TEMPLATE, "Prompt builder single template should delegate to row_rendering")
+    _expect(
+        pb._format("Known {known}, missing {missing}", {"known": 7})
+        == row_rendering.format_template("Known {known}, missing {missing}", {"known": 7}),
+        "Prompt builder safe formatter should delegate to row_rendering",
+    )
+    _expect(
+        row_rendering.format_template("Known {known}, missing {missing}", {"known": 7}) == "Known 7, missing {missing}",
+        "Row rendering changed missing-field preservation",
+    )
+    _expect(
+        row_rendering.prompt_template_for({}, {}, {}, "woman") == row_rendering.SINGLE_TEMPLATE,
+        "Row rendering default woman template changed",
+    )
+    _expect(
+        row_rendering.prompt_template_for({}, {}, {}, "group") == row_rendering.GROUP_TEMPLATE,
+        "Row rendering default group template changed",
+    )
+
+    context = {
+        "trigger": Trigger,
+        "subject": "configured cast",
+        "subject_phrase": "configured adult cast",
+        "age": "adult",
+        "body": "varied",
+        "body_phrase": "varied",
+        "skin": "",
+        "hair": "",
+        "eyes": "",
+        "item_label": "Scene",
+        "item": "shared action",
+        "scene": "warm room",
+        "pose": "standing close",
+        "expression": "focused look",
+        "composition": "centered frame",
+        "composition_prompt": "vertical centered frame",
+        "positive_suffix": "clear readable bodies.",
+        "negative_prompt": "bad anatomy",
+        "cast_descriptors": "Woman A: adult woman; Man A: adult man",
+    }
+    rendered = row_rendering.render_prompt_caption(
+        item={},
+        subcategory={
+            "prompt_template": "Scene: {item}. Composition: {composition_prompt}. Avoid: {negative_prompt}.",
+            "caption_template": "{trigger}, {item}, {scene}",
+        },
+        category={},
+        subject_type="configured_cast",
+        context=context,
+        cast_descriptor_text="Woman A: adult woman; Man A: adult man",
+        pov_prompt_directive="First-person POV from Man A.",
+    )
+    prompt = rendered["prompt"]
+    caption = rendered["caption"]
+    _expect("Characters: Woman A: adult woman; Man A: adult man." in prompt, "Row rendering lost configured-cast descriptors")
+    _expect("First-person POV from Man A." in prompt, "Row rendering lost configured-cast POV directive")
+    _expect(
+        prompt.index("Characters:") < prompt.index("First-person POV") < prompt.index("Avoid:"),
+        "Row rendering did not insert configured-cast directives before negative prompt",
+    )
+    _expect(
+        caption.endswith("Woman A: adult woman; Man A: adult man"),
+        "Row rendering did not append descriptors to captions without descriptor placeholders",
+    )
+
+
 def smoke_formatter_input_policy() -> None:
     source_row = {
         "prompt": "A simple adult portrait. Setting: quiet studio. Pose: standing calmly. Avoid: low quality.",
@@ -4197,6 +4265,7 @@ SMOKE_CASES: list[tuple[str, Callable[[], None]]] = [
     ("character_config_policy", smoke_character_config_policy),
     ("character_profile_policy", smoke_character_profile_policy),
     ("row_normalization_policy", smoke_row_normalization_policy),
+    ("row_rendering_policy", smoke_row_rendering_policy),
     ("formatter_input_policy", smoke_formatter_input_policy),
     ("formatter_cast_policy", smoke_formatter_cast_policy),
     ("caption_policy", smoke_caption_policy),