Mark Phase B complete in PROGRESS_V1.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

PROGRESS_V1.md

@@ -81,13 +81,14 @@
 - [x] Registry: `component_routes` table with `host_port` tracking
 - [x] Backward compatible: old-style `ports` strings still work
 
-### Phase B — IN PROGRESS
+### Phase B — COMPLETE (2026-03-27)
 
-- [ ] Agent connects to mc-proxy via Unix socket on deploy
-- [ ] Agent calls `AddRoute` to register routes with mc-proxy
-- [ ] Agent calls `RemoveRoute` on service stop/teardown
-- [ ] Agent config: `[mcproxy] socket` field
-- [ ] TLS certs: pre-provisioned at convention path (Phase C automates)
+- [x] Agent connects to mc-proxy via Unix socket on deploy
+- [x] Agent calls `AddRoute` to register routes with mc-proxy
+- [x] Agent calls `RemoveRoute` on service stop/teardown
+- [x] Agent config: `[mcproxy] socket` and `cert_dir` fields
+- [x] TLS certs: pre-provisioned at convention path (Phase C automates)
+- [x] Nil-safe: if socket not configured, route registration silently skipped
 
 ## Remaining Work