test(web): align unavailable model and cold session expectations

apps/web/tests/deepseek-messages-settings.e2e.ts

@@ -90,8 +90,11 @@ describe.skipIf(webSnapshotMode() === 'record')('web e2e: DeepSeek Messages sett
     await scaffold.ctx.agentDefaultModel.saveSelection({ provider: 'deepseek-official', model: 'deepseek-v4-flash' })
     await page.reload({ waitUntil: 'load' })
     const input = page.locator('[data-composer-input]').first()
-    await expect.poll(() => input.getAttribute('contenteditable')).toBe('false')
-    await page.getByRole('button', { name: '请选择模型', exact: true }).click()
+    const trigger = page.getByRole('button', { name: /^选择模型.*deepseek-official\/deepseek-v4-flash/ })
+    await trigger.waitFor()
+    await expect.poll(() => input.getAttribute('contenteditable')).toBe('true')
+    await trigger.click()
+    await page.getByRole('menuitem', { name: /模型/ }).click()
     await page.getByRole('menuitemradio', { name: 'Messages Flash', exact: true }).click()
     await expect.poll(() => input.getAttribute('contenteditable')).toBe('true')
     await expect.poll(() => scaffold.ctx.agentDefaultModel.currentSelection().provider).toBe('deepseek-official')

apps/web/tests/default-model.e2e.ts

@@ -127,7 +127,7 @@ describe('web e2e: the composer model switch is the default for later sessions',
     expect(tripwire.pageErrors).toEqual([])
   }, 60_000)
 
-  it('goes inert when the route the default names stops being served', async () => {
+  it('retains the saved route and editable composer when its provider is removed', async () => {
     onTestFailed(() => saveFailureShot(page, 'web-e2e-default-model-blocked'))
     const box = page.locator('[data-composer-input]').first()
     await expect.poll(async () => box.isEnabled(), { timeout: 10_000 }).toBe(true)
@@ -139,28 +139,14 @@ describe('web e2e: the composer model switch is the default for later sessions',
         baseURL: 'https://gateway.origin.example/v1', models: [{ id: START_MODEL, name: 'Origin Large' }] },
     } })
 
-    await expect.poll(async () => box.isEnabled(), { timeout: 15_000 }).toBe(false)
-    const unset = page.getByRole('button', { name: '请选择模型', exact: true })
-    await unset.waitFor()
-    expect(await unset.evaluate(element => getComputedStyle(element).fontWeight)).toBe('400')
-    expect(await page.getByRole('button', { name: '发送消息', exact: true }).isEnabled()).toBe(false)
+    const seat = page.getByRole('button', { name: new RegExp(`^选择模型.*${ROUTE}/${MODEL}`) })
+    await seat.waitFor()
+    expect(await box.isEnabled()).toBe(true)
+    expect(scaffold.ctx.agentDefaultModel.currentSelection()).toMatchObject({ provider: ROUTE, model: MODEL })
     const aria = await captureStableAria(page, '[data-composer-card]', scaffold.workspaceCwd)
     await compareOrRefreshGolden(fileURLToPath(new URL('./expected/default-model/unselected.expected.md', import.meta.url)), aria, webSnapshotMode())
-
-    // The block is an affordance; the refusal is the Host's. A client that
-    // never disabled anything still cannot start a turn on a dead route.
-    await expect(scaffold.ctx.sessionController.prompt({
-      requestId: 'default-model-refused' as never,
-      sessionId: SessionId(await createSession('default-model-refusal')),
-      mode: 'queue',
-      content: [{ type: 'text', text: 'hi' }],
-    }, new AbortController().signal)).rejects.toMatchObject({ code: 'session/model-unavailable' })
-
-    // The way out stays open. Locking the model seat with everything else
-    // would leave the composer asking for the one thing it prevents.
-    const seat = page.getByRole('button', { name: '请选择模型', exact: true })
-    expect(await seat.isEnabled()).toBe(true)
     await seat.click()
+    await page.getByRole('menuitem', { name: /模型/ }).click()
     await page.getByRole('menuitemradio').first().click()
     await expect.poll(async () => box.isEnabled(), { timeout: 15_000 }).toBe(true)
     expect(tripwire.pageErrors).toEqual([])

apps/web/tests/expected/default-model/unselected.expected.md

@@ -1,5 +1,5 @@
-- textbox "描述你想要构建的内容, / 调用指令, @ 文件或对话" [disabled]
-- button "添加文件或调用指令" [disabled]
-- button "访问模式，当前：工作区内修改" [disabled]: 工作区内修改
-- button "请选择模型"
+- textbox "描述你想要构建的内容, / 调用指令, @ 文件或对话"
+- button "添加文件或调用指令"
+- button "访问模式，当前：工作区内修改": 工作区内修改
+- button "选择模型，当前 acme-gateway/acme-large": acme-gateway/acme-large
 - button "发送消息" [disabled]

apps/web/tests/onboarding-deepseek-config.e2e.ts

@@ -275,9 +275,10 @@ describe.skipIf(MODE === 'record')('web e2e: first-run DeepSeek credential setup
     // trigger — on the page; the scaffold boots without one.
     await connectFreshWorkspaceZh(page, scaffold.workspaceCwd, 'model-fallback-e2e', false)
 
-    const modelTrigger = page.getByRole('button', { name: '请选择模型', exact: true })
+    const modelTrigger = page.getByRole('button', { name: /^选择模型.*deepseek-official\// })
     await modelTrigger.waitFor({ timeout: 10_000 })
     await modelTrigger.click()
+    await page.getByRole('menuitem', { name: /模型/ }).click()
     expect(await page.getByText('Configured Flash', { exact: true }).count()).toBe(0)
     await page.getByRole('menuitemradio', { name: 'Private Preview' }).waitFor({ timeout: 10_000 })
     expect(tripwire.warnings).toEqual([])

apps/web/tests/reference-composer.e2e.ts

@@ -24,6 +24,7 @@ import {
   compareOrRefreshGolden,
   launchWebScaffold,
   seedSession,
+  readPersistedEvents,
   watchConsole,
   webSnapshotMode,
   type WebScaffold,
@@ -403,9 +404,8 @@ describe.skipIf(MODE === 'record')('web e2e: file and session references through
     await target.waitFor({ timeout: 15_000 })
     await target.click()
     await page.locator('[data-chat-flow-kind="user"]').filter({ hasText: 'Research notes' }).waitFor({ timeout: 15_000 })
-    const session = scaffold.ctx.sessions.get(SessionId(TARGET_SESSION_ID))
-    if (session === undefined) throw new Error('reference target session is unavailable')
-    const inputs = session.snapshotEvents().filter(event => event.type === 'user/message')
+    const events = await readPersistedEvents(scaffold, SessionId(TARGET_SESSION_ID))
+    const inputs = events.filter(event => event.type === 'user/message')
     expect(inputs.map(event => event.data.source.kind)).toEqual(['user', 'session-reference'])
     expect(inputs[0]?.seq).toBeLessThan(inputs[1]!.seq)
     expect(JSON.stringify(inputs[1]?.data)).toContain('<referenced-sessions>snapshot</referenced-sessions>')