test: add schema v3 only absence gate

scripts/test-task13-runtime-fixtures.sh

@@ -41,31 +41,7 @@ TASK13_CURRENT_IMAGE_OVERRIDE="$fixture/current-image.yaml"
 mkdir -p "$TASK13_REMOTE"
 
 workspace="$fixture/task13-smoke.yaml"
-cat >"$workspace" <<'EOF'
-workspace:
-  schema_version: 3
-  id: task13-smoke
-  name: Task 13 Smoke
-  language: en
-dwh:
-  engine: postgres
-  database: warehouse
-  schema: analytics
-  supported_transports: [postgres_direct]
-semantic_index:
-  vector_store:
-    engine: qdrant
-    collection: task13-smoke
-    dimensions: 1024
-    distance: cosine
-  embedding:
-    provider: ollama_internal
-    model: qwen3-embedding:0.6b
-    dimensions: 1024
-llm_policy:
-  default: local-qwen/task13-smoke
-  allowed: [local-qwen/task13-smoke]
-EOF
+cp "$root/scripts/fixtures/workspace-registry-task13.yaml" "$workspace"
 
 if [[ "$profile" == local ]]; then
   task13_write_fixture_files