chore: Stable Agent Mesh - Deterministic HMAC Signatures and Proto Synchronization ...

- Fix circular import in Agent auth utility (Live config vs static import)
- Enforce deterministic Protobuf serialization for cross-platform signature consistency
- Synchronize stale Protobuf classes in agent-node source tree
- Sign gRPC keepalive/work-pool messages to prevent stream drops
- Fix Hub config initialization order (OIDC_ENABLED vs ALLOW_PASSWORD_LOGIN)
- Enhanced stream error logging with tracebacks
- Bumped version to 1.1.0 to force fleetwide update

Proactive Git Task: Updated protos, tests, and deployment script

Remediation of audit reports (gRPC Security, Node Auth, and Protos)

Cleanup skill logic files and update deployment scripts