Extract row pool routing policy

tools/prompt_smoke.py

@@ -52,6 +52,7 @@ import row_normalization  # noqa: E402
 import route_metadata  # noqa: E402
 import row_camera  # noqa: E402
 import row_location  # noqa: E402
+import row_pools  # noqa: E402
 import server_routes  # noqa: E402
 import sdxl_formatter  # noqa: E402
 import sdxl_presets  # noqa: E402
@@ -1662,6 +1663,26 @@ def smoke_category_library_route() -> None:
     _expect(expressions, "category inheritance did not resolve expressions")
     _expect(compositions, "category inheritance did not resolve compositions")
     _expect(any("oral" in _clean_key(entry.get("prompt") if isinstance(entry, dict) else entry) for entry in scenes), "oral scene pool did not contribute")
+    location_override = {"enabled": True, "apply_mode": "replace", "scene_entries": ["custom scene"]}
+    composition_override = {"enabled": True, "apply_mode": "replace", "composition_entries": ["custom composition"]}
+    _expect(
+        pb._scene_pool(category, subcategory, item, "configured_cast", location_override)
+        == row_pools.scene_pool(category, subcategory, item, "configured_cast", location_override),
+        "Prompt builder scene pool should delegate to row_pools",
+    )
+    _expect(
+        pb._expression_pool(category, subcategory, item) == row_pools.expression_pool(category, subcategory, item),
+        "Prompt builder expression pool should delegate to row_pools",
+    )
+    _expect(
+        pb._pose_pool(category, subcategory, item, "couple", "standard") == row_pools.pose_pool(category, subcategory, item, "couple", "standard"),
+        "Prompt builder pose pool should delegate to row_pools",
+    )
+    _expect(
+        pb._composition_pool(category, subcategory, item, "configured_cast", composition_override)
+        == row_pools.composition_pool(category, subcategory, item, "configured_cast", composition_override),
+        "Prompt builder composition pool should delegate to row_pools",
+    )
 
 
 def smoke_hardcore_category_routes() -> None: