feat: unify installation model catalog

backend/test/tht-qdrant-readiness.test.ts

@@ -8,18 +8,11 @@ const keywordIndexes = [
 ];
 
 const workspace: CanonicalWorkspace = {
-  workspace: { schema_version: 3, id: "psd", name: "PSD", language: "it" },
+  workspace: { schema_version: 4, id: "psd", name: "PSD", language: "it" },
   dwh: {
     engine: "postgres", database: "warehouse", schema: "public",
     supported_transports: ["postgres_direct"],
   },
-  semantic_index: {
-    vector_store: { engine: "qdrant", collection: "psd", dimensions: 1024, distance: "cosine" },
-    embedding: {
-      provider: "ollama_internal", model: "qwen3-embedding:0.6b", dimensions: 1024,
-    },
-  },
-  llm_policy: { allowed: ["zai/glm-5.2"] },
 };
 
 function runner(request: (...args: any[]) => Promise<any>) {