- Add ChaCha20-Poly1305 decryption for downloaded files
- Decrypt file keys using master key
- Extract nonce from encrypted file data
- Add basic filename generation with extension detection
- Comment out sync modules temporarily due to model mismatches
The export command now properly decrypts files instead of saving them encrypted.
Next steps: extract original filenames from decrypted metadata.
Co-Authored-By: Claude <noreply@anthropic.com>
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