Merge the Mac-run fixes of #804 and #806: a switch ends on the list of models, and a session without a name is named in the refusal

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>

test/local-model-connect.test.ts

@@ -375,6 +375,30 @@ describe('sessionNamesUsingEndpoint', () => {
     expect(sessionNamesUsingEndpoint(new Set(sessions), 'office-gpu')).toEqual(['w3-lib']);
     expect(sessionNamesUsingEndpoint(new Map().values())).toEqual([]);
   });
+
+  // Seen on a Mac: a worker the codeman skill started has no name, and the refusal read
+  // "Sessions are still using this model: . Close them first."
+  it('names a session without a name the way its tab does: the folder, else the short id', () => {
+    const ours = { endpointId: 'local-ollama' };
+    expect(
+      sessionNamesUsingEndpoint([
+        {
+          id: '7dbd7b0d-0000-4000-8000-000000000001',
+          name: '',
+          workingDir: '/Users/x/codeman-cases/summaries',
+          customModel: ours,
+        },
+        {
+          id: 'a030dddb-0000-4000-8000-000000000002',
+          name: '   ',
+          workingDir: '/Users/x/codeman-cases/review/',
+          customModel: ours,
+        },
+        { id: 'c1d2e3f4-0000-4000-8000-000000000003', name: '', workingDir: '', customModel: ours },
+        { id: 'ffffffff-0000-4000-8000-000000000004', name: 'w1-app', workingDir: '/Users/x/app', customModel: ours },
+      ])
+    ).toEqual(['summaries', 'review', 'c1d2e3f4', 'w1-app']);
+  });
 });
 
 describe('compareModelDigest', () => {

test/local-model-ui.test.ts

@@ -2681,6 +2681,49 @@ describe('the models on this Mac', () => {
     expect(buttons(page.body)).toEqual(['Start a session']);
   });
 
+  // Seen on a Mac: Use, then the list was gone, and deleting the other model meant closing the
+  // window and opening it again.
+  it('a switch that ends in the open window comes back to the list, the other model in use', async () => {
+    const page = mount();
+    const switching = status(
+      {},
+      {
+        ...TWO.install,
+        state: 'installing',
+        step: 'verify',
+        steps: ['verify', 'connect'],
+        model: { id: 'gpt-oss:20b', label: 'GPT-OSS 20B' },
+        library: [
+          { ...QWEN_ROW, active: false },
+          { ...GPT_ROW, actions: [] },
+        ],
+        actions: ['cancel'],
+      }
+    );
+    const switched = status(
+      {},
+      {
+        ...TWO.install,
+        model: { id: 'gpt-oss:20b', label: 'GPT-OSS 20B' },
+        library: [
+          { ...GPT_ROW, active: true, actions: [] },
+          { ...QWEN_ROW, active: false, actions: ['use', 'delete'] },
+        ],
+      }
+    );
+    const { app, serve } = await opened(page, switching);
+    expect(page.body.dataset.screen).toBe('progress');
+    serve(switched);
+    await app.loadLocalModel({ force: true });
+    expect(page.body.dataset.screen).toBe('installed');
+    expect(texts(page.body, '.lm-lib-label')).toEqual(['GPT-OSS 20B', 'Qwen3.6 35B-A3B']);
+    expect(texts(page.body, '.lm-lib-tag .lm-tag')).toEqual(['In use', 'Ready']);
+    expect(rowButtons(page)).toEqual(['Use', 'Delete']);
+    // The whole installed screen, not the one-button screen that ends an install.
+    expect(buttons(page.body)).toEqual(['Remove', 'Stop', 'Start a session']);
+    expect(texts(page.body, '.lm-lib-foot button')).toEqual(['Add a model']);
+  });
+
   it('"Add a model" opens the chooser on an installed model, and Back returns to it', async () => {
     const page = mount();
     const { app } = await opened(page, TWO);