[regeloapp-coder]

Summary

• Flush pending book metadata edits on editor exit and handle chapter creation failures.
• Correct stateful bookmark/like accessibility actions and clear loading state when profile search is cancelled or shortened.
• Retry failed reading-progress uploads and bound document import reads to 40 MB.
• Add regression coverage, bump to v1.3.1 (versionCode 131), and run tests, lint, debug and release builds in CI.

Validation

• gradlew test lintDebug assembleDebug assembleRelease --rerun-tasks passed locally (26 unit tests).
• Installed and launched on Android emulator with existing app data; process stayed up, encrypted database remained readable, no startup crash.

Release note

• GitHub test APK is debug-signed; this is not a Play Store-ready signed AAB. A production upload key, public account-deletion URL, and Play Console declarations are still required.