Covert communications for private group conversations. Invite, talk, close the client, and the chat vanishes. Every message is encrypted with XChaCha20 and signed with Ed25519. A BLAKE3 fingerprint on each key allows peers to verify one another. SPQR's manual and epoch ratchets add forward secrecy, while post-quantum ML-KEM-768 encapsulation keeps recorded communications unreadable and secure against future cryptanalysis.