v0.2.3 — Export key bugfix
Fixed the "Export failed: Unknown: pqcmail:export_key" error that prevented private key export from working.

Private key export and import now work correctly
No changes to encryption algorithms, key format, or network behavior

v0.2.2 — Encryption bugfix
Fixed an error that prevented encryption from completing when the sender's signing key was stored in an incompatible format (e.g. generated with an older version of the extension, or retrieved from PQCServer rather than generated locally).

Encryption now always completes successfully, even when the digital signature cannot be applied
If the signing key is missing or has an unexpected size, the message is sent encrypted but unsigned, instead of failing with an error
No changes to the encryption algorithms, key format, or network behavior
Users who generated their identity with v0.2.1 and experienced the error "secretKey expected Uint8Array" are advised to regenerate their key pair from Settings → Generate New Key Pair

v0.2.1 — Private Key Backup

Added Export Private Key: download your private key as an AES-256-GCM encrypted backup file protected by a passphrase of your choice (PBKDF2, 310,000 iterations)
Added Import Private Key: restore a private key from a backup file on any Firefox browser
If you lose access to your browser, you can now recover your identity and decrypt messages previously sent to you
No changes to encryption algorithms or network behavior