fix: prevent P2 from owning Qdrant lifecycle

harness/tht/config.py

@@ -222,6 +222,9 @@ class QdrantConfig(BaseModel):
     type: Literal["qdrant"]
     base_url: str
     collection: str = Field(min_length=1)
+    # Internal runtime policy. Registry-rendered configs must not create or alter
+    # the workspace-owned semantic collection; legacy configs retain compatibility.
+    collection_lifecycle: Literal["create_if_missing", "require_existing"] = "create_if_missing"
 
 
 VectorResourceConfig = Annotated[
@@ -547,6 +550,25 @@ def load_config(path: Path) -> Config:
     _validate_internal_embedding_contract(expanded, path)
     _validate_internal_vector_contract(expanded, path)
     translated, used_legacy = translate_legacy_config(expanded)
+    vectors = translated.get("vectors")
+    resource_vector = expanded.get("resources", {}).get("vector") if isinstance(
+        expanded.get("resources"), dict
+    ) else None
+    if (
+        isinstance(vectors, dict)
+        and vectors.get("type") == "qdrant"
+        and isinstance(resource_vector, dict)
+        and "collection_lifecycle" in resource_vector
+    ):
+        vectors["collection_lifecycle"] = resource_vector["collection_lifecycle"]
+    # runtime_identity is the registry marker.  The lifecycle is an internal
+    # runtime policy, never a descriptor-controlled option.
+    if (
+        isinstance(translated.get("runtime_identity"), dict)
+        and isinstance(vectors, dict)
+        and vectors.get("type") == "qdrant"
+    ):
+        vectors["collection_lifecycle"] = "require_existing"
     _populate_legacy_views(translated)
     try:
         cfg = Config.model_validate(translated)
@@ -662,7 +684,7 @@ def _validate_internal_vector_contract(raw: dict[str, Any], path: Path) -> None:
     engine = vector.get("engine")
     base_url = vector.get("base_url")
     collection = vector.get("collection")
-    allowed = {"engine", "base_url", "collection"}
+    allowed = {"engine", "base_url", "collection", "collection_lifecycle"}
     unexpected = sorted(set(vector) - allowed)
     if unexpected:
         raise ConfigError(