- ActorType enum (adm/agt/atm) replaces actor_class string; config validates
naming convention (adm-*/agt-*/atm-*) with hard ConfigError on mismatch;
legacy 'human'/'automation' values accepted with DeprecationWarning
- cert_command: pluggable shell string run before each SSH launch; cert written
to state dir; -i cert appended to SSH command alongside -i key
- TTL-aware cert refresh: parses Valid-to via ssh-keygen -L; pre-emptive restart
5 min before expiry (no backoff, no attempt increment); CERT_EXPIRING logged
- CertAcquisitionError: cert failures trigger normal backoff/retry loop
- cert_identity: Key ID parsed from cert and recorded in BRIDGE_CONNECTED event
- bridge cert-status: new CLI command; exit 1 on expired cert; --json flag
- 233 tests passing, ruff clean
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>