song
a3f67a0a7c
fix: download timeout + file validation + source indicator + stale APK
Root cause of "install doesn't update": gradle cached old APK, release
uploaded stale version. Fixes:
- Dedicated download OkHttpClient with 120s readTimeout (was 30s)
- 64KB buffer (was 8KB) for faster large-file download
- Post-download file size validation (Content-Length / release declared)
- Reject files < 1MB (likely HTML error pages)
- downloadSource StateFlow shows "Gitea" or "GitHub" during download
- UpdateDialog shows "正在下载更新…（来自 Gitea）"
- version 1.9.2 -> 1.9.3 (code 31 -> 32)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>