feat(web): list previous app builds on the download page

GET /app/clients now returns up to 8 Gitea releases per OS so users can download older installers while they still exist after prune.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/web/src/test/fakeApi.ts

@@ -122,7 +122,13 @@ export function fakeApi(initial: FakeUser[]) {
           version_code: 1_030_099,
           notes_md: '',
           clients: [
-            { client: 'windows', filename: 'pipu-music_1.3.0_x64-setup.exe', size: 20_000_000, download_url: '/api/v1/app/download/windows/1.3.0' },
+            {
+              client: 'windows',
+              filename: 'pipu-music_1.3.0_x64-setup.exe',
+              size: 20_000_000,
+              download_url: '/api/v1/app/download/windows/1.3.0',
+              older: [{ version: '1.2.0', filename: 'pipu-music_1.2.0_x64-setup.exe', size: 19_000_000, download_url: '/api/v1/app/download/windows/1.2.0' }],
+            },
             { client: 'linux', filename: 'pipu-music_1.3.0_amd64.deb', size: 4_000_000, download_url: '/api/v1/app/download/linux/1.3.0' },
             { client: 'macos', filename: 'pipu-music_1.3.0_aarch64.dmg', size: 22_000_000, download_url: '/api/v1/app/download/macos/1.3.0' },
             { client: 'android', filename: 'pipu-music-1.3.0.apk', size: 12_000_000, sha256: 'ab'.repeat(32), download_url: '/api/v1/app/download/android/1.3.0' },