feat: unify installation model catalog

backend/test/readiness-manager.test.ts

@@ -2,18 +2,11 @@ import { expect, test } from "vitest";
 import { ReadinessManager } from "../src/runtime/readiness-manager.js";
 
 const workspace = {
-  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"] },
 } as const;
 
 function deferred<T>() {