feat: add iCal calendar subscriptions

frontend/e2e/mobile-ui.spec.ts

@@ -6,11 +6,6 @@ function bottomTab(page: Page, name: string) {
 }
 
 async function openSettings(page: Page) {
-  const mobileTab = bottomTab(page, '设置')
-  if (await mobileTab.isVisible()) {
-    await mobileTab.click()
-    return
-  }
   const desktopSettings = page.getByRole('navigation', { name: '管理' }).getByRole('button', { name: '设置', exact: true })
   const box = await desktopSettings.boundingBox()
   if (box && box.x + box.width > 0 && box.y + box.height > 0 && box.x < (await page.viewportSize())!.width) await desktopSettings.click()
@@ -159,15 +154,21 @@ test('bottom navigation keeps its safe-area gap after dragging', async ({ page }
 })
 
 test('all bottom destinations expose one active page and desktop layout stays unchanged', async ({ page }) => {
+  await page.route('**/api/v1/calendar-subscriptions', route => route.fulfill({ json: [] }))
+  await page.route('**/api/v1/calendar-events?*', route => route.fulfill({ json: { events: [], sources: [] } }))
   await page.goto('/')
   const navigation = page.getByRole('navigation', { name: '主要导航' })
-  for (const label of ['今天', '习惯', '倒数日', '设置']) {
-    await bottomTab(page, label).click()
-    await expect(navigation.locator('[aria-current="page"]')).toHaveCount(1)
-    await expect(bottomTab(page, label)).toHaveAttribute('aria-current', 'page')
+  const mobile = (await page.viewportSize())!.width <= 930
+  if (mobile) {
+    for (const label of ['今天', '习惯', '倒数日', '备忘录', '日历订阅']) {
+      await bottomTab(page, label).click()
+      await expect(navigation.locator('[aria-current="page"]')).toHaveCount(1)
+      await expect(bottomTab(page, label)).toHaveAttribute('aria-current', 'page')
+    }
+    await bottomTab(page, '今天').click()
+  } else {
+    await expect(navigation).toBeHidden()
   }
-
-  await bottomTab(page, '今天').click()
   await page.setViewportSize({ width: 1440, height: 900 })
   const desktop = await page.locator('.shell').evaluate(element => {
     const shell = getComputedStyle(element)
@@ -202,7 +203,9 @@ test('all bottom destinations expose one active page and desktop layout stays un
 test('settings match the approved paper-ledger geometry and action hierarchy', async ({ page }) => {
   await page.goto('/')
   await openSettings(page)
-  if ((await page.viewportSize())!.width <= 720) await expect(bottomTab(page, '设置')).toHaveAttribute('aria-current', 'page')
+  if ((await page.viewportSize())!.width <= 720) {
+    await expect(page.getByRole('navigation', { name: '主要导航' }).getByRole('button', { name: '设置', exact: true })).toHaveCount(0)
+  }
   const groups = page.locator('.settings-group')
   await expect(groups).toHaveCount(4)
   const layout = await page.locator('.settings-sections').evaluate(element => {