[sofire]

Summary

Android client
├── Conversations: private disk cache, recent-round paging, refresh/retry
├── Chats and folders: grouping, sorting, collapse, local ordering/visibility
└── Files: conversation index, persistent downloads, local/remote previews

• Cache confirmed responses per profile, endpoint and credentials, with bounded storage and invalidation on identity changes.
• Preserve loaded history, live replies and navigation drafts; keep global search independent of list display preferences.
• Add ticket-based downloads, APK installer handoff, bounded image/text previews, English/Chinese resources and usage documentation.
• Keep legacy-server fallbacks for history and file indexing; no new dependencies.

Evidence

• Before: conversation entry fetched full detail from the server; no persistent download/file-manager flow or device-local folder organization.
  After: cache-first lists/details, validated history pages, persistent preferences and a unified conversation-files/download-history flow, covered by regression tests.
• Verification command: ANDROID_HOME=<sdk> ./gradlew :app:check :app:assembleDebug :app:assembleRelease --no-daemon --no-build-cache.
• Full verification passed: Debug and Release each ran 269 JVM tests across 43 suites, zero failures/errors/skips; lint and both APK builds succeeded (lint warnings remain).
• git diff --cached --check passes.
• A fresh online license report matches the checked-in bundle. Offline report generation lacks POM metadata and can produce an invalid cached report; local verification disables the build cache.
• Physical-device and emulator interaction tests were not repeated for this submission.

Merge Danger

Door: two-way

No destructive data migration. Conversation caches are disposable; download history removal preserves completed files. This request contains Android changes only.

Blast Radius: Android

• Recent-round paging and the compact file index benefit from the accompanying Codeg server support. Older servers fall back to full history, which can be slower for large conversations.
• Server-file viewing/downloading requires the existing workspace_download_ticket API. System downloads receive one-use URLs, never the server token.
• Adds REQUEST_INSTALL_PACKAGES for user-confirmed APK installation; Android may require a separate user grant.