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- Fix force unwrapping in NostrIdentity bech32 functions that could crash on non-ASCII input - Add comprehensive input validation for all protocol messages (peer IDs, nicknames, timestamps) - Strengthen keychain security with better sandbox detection and consistent app group usage - Implement secure memory clearing for cryptographic keys and shared secrets - Fix panic mode not reconnecting to mesh by restarting services after emergency disconnect Co-authored-by: jack <jackjackbits@users.noreply.github.com>