natreex 25c7f25a0e Migrate vault encryption to OS keyring, handle PIN rate limiting, and improve tombstone handling logic. ...

- Replaced legacy vault key derivation with OS keyring-backed storage for improved security and platform integration.
- Introduced PIN rate limiting with configurable lockout durations to mitigate brute-force attacks.
- Enhanced tombstone services to use unified error-handling logic via `apply_tombstone`.
- Refactored logic for book and series data synchronization, fixing null checks and improving flow consistency.
- Added comprehensive error handling to all database and vault operations in key manager services.

2026-03-24 23:05:56 -04:00

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src

Migrate vault encryption to OS keyring, handle PIN rate limiting, and improve tombstone handling logic.

2026-03-24 23:05:56 -04:00