Stop agent prompts renaming existing workspaces

packages/server/src/server/session.ts

@@ -2411,6 +2411,7 @@ export class Session {
           initialTitle: workspacePromptTitle,
         },
       );
+      const createdDirectoryWorkspaceForAgent = !createdWorktree && !msg.workspaceId;
 
       const { snapshot, liveSnapshot } = await createAgentCommand(
         {
@@ -2441,11 +2442,8 @@ export class Session {
         },
       );
       createdAgentId = snapshot.id;
-      if (!createdWorktree && msg.workspaceId) {
-        await this.writeInitialWorkspaceTitleIfUntitled(workspaceId, workspacePromptTitle);
-      }
       await this.agentUpdates.forwardLiveAgent(snapshot);
-      if (!createdWorktree && trimmedPrompt) {
+      if (createdDirectoryWorkspaceForAgent && trimmedPrompt) {
         await this.scheduleAutoNameLocalWorkspaceTitleForFirstAgent({
           workspaceId,
           cwd: createAgentConfig.cwd,
@@ -2906,24 +2904,6 @@ export class Session {
     });
   }
 
-  private async writeInitialWorkspaceTitleIfUntitled(
-    workspaceId: string,
-    title: string | null,
-  ): Promise<void> {
-    if (!title) {
-      return;
-    }
-    const current = await this.workspaceRegistry.get(workspaceId);
-    if (!current || current.title) {
-      return;
-    }
-    await this.workspaceRegistry.upsert({
-      ...current,
-      title,
-      updatedAt: new Date().toISOString(),
-    });
-  }
-
   // Wraps the injected workspace-name generator for a directory workspace.
   private async generateWorkspaceTitleFromContext(input: {
     cwd: string;

packages/server/src/server/session.workspaces.test.ts

@@ -830,7 +830,8 @@ test("create_agent_request keeps requested child cwd when grouped under an exist
   }
 });
 
-test("create_agent_request writes the first prompt title onto an untitled existing workspace", async () => {
+test("create_agent_request does not title an existing workspace from the agent prompt", async () => {
+  vi.useFakeTimers();
   const workdir = mkdtempSync(path.join(tmpdir(), "paseo-create-agent-existing-title-"));
   try {
     const cwd = path.join(workdir, "repo");
@@ -883,6 +884,7 @@ test("create_agent_request writes the first prompt title onto an untitled existi
       }),
     );
 
+    let generateCalls = 0;
     const session = asTestSession(
       new Session({
         clientId: "test-client",
@@ -922,6 +924,10 @@ test("create_agent_request writes the first prompt title onto an untitled existi
         mcpBaseUrl: null,
         stt: null,
         tts: null,
+        generateWorkspaceName: async () => {
+          generateCalls += 1;
+          return { title: "Generated title that must not be written", branch: null };
+        },
         providerSnapshotManager: createProviderSnapshotManagerStub().manager,
         terminalManager: null,
       }),
@@ -935,13 +941,17 @@ test("create_agent_request writes the first prompt title onto an untitled existi
       initialPrompt: "Fix login bug\nwith better validation",
       attachments: [],
     });
+    await vi.runAllTimersAsync();
 
     const [createdAgent] = agentManager.listAgents();
     expect(createdAgent?.workspaceId).toBe("ws-existing");
+    expect(generateCalls).toBe(0);
     await expect(workspaceRegistry.get("ws-existing")).resolves.toMatchObject({
-      title: "Fix login bug",
+      title: null,
+      updatedAt: "2026-05-07T00:00:00.000Z",
     });
   } finally {
+    vi.useRealTimers();
     rmSync(workdir, { recursive: true, force: true });
   }
 });

packages/server/src/server/workspace-same-cwd-isolation.e2e.test.ts

@@ -410,7 +410,7 @@ test("local workspace auto-title does not broadcast provider snapshot warm-up to
   }
 }, 20_000);
 
-test("create_agent_request with initialPrompt generates a daemon-visible workspace title", async () => {
+test("create_agent_request with workspaceId does not retitle an existing workspace", async () => {
   const cwd = mkdtempSync(path.join(tmpdir(), "paseo-agent-submit-title-"));
   const daemon = await createTestPaseoDaemon({
     agentClients: { mock: new MockLoadTestAgentClient() },
@@ -433,6 +433,8 @@ test("create_agent_request with initialPrompt generates a daemon-visible workspa
     if (!workspaceId) {
       throw new Error(created.error ?? "Expected workspace to be created");
     }
+    const originalName = await workspaceName(client, workspaceId);
+    expect(originalName).toBe(path.basename(cwd));
 
     const agent = await client.createAgent({
       provider: "mock",
@@ -443,9 +445,7 @@ test("create_agent_request with initialPrompt generates a daemon-visible workspa
     });
     expect(agent.workspaceId).toBe(workspaceId);
 
-    await expect
-      .poll(() => workspaceName(client, workspaceId), { timeout: 10_000 })
-      .toBe("Fix login bug");
+    expect(await workspaceName(client, workspaceId)).toBe(originalName);
   } finally {
     await client.close().catch(() => undefined);
     await daemon.close();