Changes: Preserve incomplete work and blocker metadata for S00-003. This checkpoint does not mark implementation accepted.
Validation: Session ended with status blocked.
Blocker: S00-003 cannot attest parser limits: Stanza 12.22.1 exposes no resource bounds and its persistent WebSocket parser accepts large/deep XML and reassembles incomplete documents across separate input messages.
Task: S00-003
Agent: auto-protocol-902594b44429
Role: protocol
Action: claim
Status: blocked
Task title: Проверить XMPP WSS/auth библиотеку
