fix: parallelize memory embedding indexing

src/memory/manager.embedding-batches.test.ts

@@ -150,4 +150,45 @@ describe("memory embedding batches", () => {
     expect(last?.total).toBeGreaterThan(0);
     expect(last?.completed).toBe(last?.total);
   });
+
+  it("retries embeddings on rate limit errors", async () => {
+    const line = "d".repeat(120);
+    const content = Array.from({ length: 12 }, () => line).join("\n");
+    await fs.writeFile(path.join(workspaceDir, "memory", "2026-01-06.md"), content);
+
+    let calls = 0;
+    embedBatch.mockImplementation(async (texts: string[]) => {
+      calls += 1;
+      if (calls < 3) {
+        throw new Error("openai embeddings failed: 429 rate limit");
+      }
+      return texts.map(() => [0, 1, 0]);
+    });
+
+    const cfg = {
+      agents: {
+        defaults: {
+          workspace: workspaceDir,
+          memorySearch: {
+            provider: "openai",
+            model: "mock-embed",
+            store: { path: indexPath },
+            chunking: { tokens: 200, overlap: 0 },
+            sync: { watch: false, onSessionStart: false, onSearch: false },
+            query: { minScore: 0 },
+          },
+        },
+        list: [{ id: "main", default: true }],
+      },
+    };
+
+    const result = await getMemorySearchManager({ cfg, agentId: "main" });
+    expect(result.manager).not.toBeNull();
+    if (!result.manager) throw new Error("manager missing");
+    manager = result.manager;
+
+    await manager.sync({ force: true });
+
+    expect(calls).toBe(3);
+  }, 10000);
 });