DIRECTIVES round 1: all lanes merged & verified (96 tests), integration begins

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

plan/DIRECTIVES.md

@@ -4,6 +4,20 @@ Written **only** by the coordinator (the human's planning session). Agents: read
 
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+## Round 1 — 2026-07-16 — All lanes merged & verified; integration begins
+
+**Coordinator review result:** foundation + all four lanes are merged to `main` (merge commits `e28dc78` A, `2cad2f7` B, `9d17b47` C; D fast-forwarded earlier at `5c2d7c6`). Independently verified on the merged tree: **96 backend tests pass**, synthetic `ingest → sync` recovers ground-truth offsets exactly (+0 / +1370 / −842 ms, drift 0), `events` finds 3 candidates and degrades gracefully unconfigured, frontend production build clean. Excellent evidence discipline across all lanes — keep it.
+
+**Directives:**
+
+1. **Integration phase starts now** — one agent, branch `integration` from `main`, per `plan/10-integration.md`. Maintain `plan/status/integration.md`.
+2. **CR-1 (lane D, test_api.py stub assertion): APPROVED by coordinator.** The edit was a direct consequence of M7 landing and touched no frozen contract file. Integration agent: mark the Decision line in `plan/CHANGE_REQUESTS.md` and confirm the new assertion matches the spec M3 `POST /api/events/detect` response shape (`{result, events}`).
+3. **Integration additions to the plan/10-integration.md scope** (small, discovered in review):
+   - The shared-worktree collision (see lane A/C status round 0) left a coordinator-stashed debris stash in the main working dir (`git stash list` — "stale lane A/B debris"). After confirming nothing of value remains, drop it, and remove the now-merged worktrees `../festifun-laneA` and `../festifun-laneB` (`git worktree remove`).
+   - Lane C's env note: continuous-playback sync was verified deterministically because the automated browser tab was backgrounded. During your full-system pass, verify the M4 sync overlay (<50 ms) once in a real focused browser window.
+   - Test count sanity: suite is 96 passed on merge day; it must never drop below that.
+4. **Worktree protocol lesson (standing):** integration runs single-agent, so use the main working directory directly on branch `integration`. If parallel agents are ever launched again, each MUST create its own `git worktree` before its first edit — never share a working directory.
+
 ## Round 0 — 2026-07-16 — Run order & protocol
 
 **Execution order:**