fix: close internal semantic review gaps

backend/test/readiness-manager.test.ts

@@ -1,6 +1,21 @@
 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" },
+  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>() {
   let resolve!: (value: T) => void;
   const promise = new Promise<T>((r) => { resolve = r; });
@@ -60,3 +75,31 @@ test("readiness does not cache failed results", async () => {
   await expect(readiness.ensure("psd")).resolves.toMatchObject({ ok: true });
   expect(calls).toBe(2);
 });
+
+test("readiness checks Qdrant before Ollama and skips Ollama on semantic incompatibility", async () => {
+  let ollamaCalls = 0;
+  const tht = {
+    qdrantEnsure: async () => ({ ok: false, code: "semantic_index_incompatible" }),
+    ollamaEnsure: async () => { ollamaCalls += 1; return { ok: true }; },
+  } as any;
+  const readiness = new ReadinessManager(tht, 60);
+
+  await expect(readiness.ensure("/registry/psd.yaml", undefined, workspace as any)).resolves.toEqual({
+    ok: false,
+    code: "semantic_index_incompatible",
+  });
+  expect(ollamaCalls).toBe(0);
+});
+
+test("readiness returns a sanitized activation code when a semantic probe throws", async () => {
+  const tht = {
+    qdrantEnsure: async () => { throw new Error("dial http://qdrant:6333/private"); },
+    ollamaEnsure: async () => ({ ok: true }),
+  } as any;
+  const readiness = new ReadinessManager(tht, 60);
+
+  await expect(readiness.ensure("/registry/psd.yaml", undefined, workspace as any)).resolves.toEqual({
+    ok: false,
+    code: "workspace_not_activatable",
+  });
+});