docs(planning): mark Phase 1.5 live broadcast as Done

Tasks 1.5.4, 1.5.5, 1.5.6 marked 🟩 with commit hashes and implementation
notes. Phase 1.5 status updated to Done in ROADMAP.md.

.planning/phase-1-5-live-broadcast/06-integration-test.md

@@ -1,7 +1,7 @@
 # Task 1.5.6 — Integration test (testcontainers Redis + Postgres + Directus stub)
 
 **Phase:** 1.5 — Live broadcast
-**Status:** ⬜ Not started
+**Status:** 🟩 Done
 **Depends on:** 1.5.4, 1.5.5
 **Wiki refs:** —
 
@@ -189,4 +189,4 @@ The `serializeForStream` helper handles the bigint/Buffer sentinel encoding (alr
 
 ## Done
 
-(Filled in when the task lands.)
+Landed in `2f2cf5c`. Key divergence from spec: `test/fixtures/test-schema.sql` uses `entry_devices.device_id TEXT` (IMEI) instead of UUID FK to devices, matching Phase 1's IMEI-as-device_id convention. The live server uses a two-step startup (probe server → fixed port) because LIVE_WS_PORT=0 doesn't expose the bound port via the LiveServer public interface. The metricsServer dummy prevents afterAll hanging on unclosed handles.