docs(P1): ship complete — checkpoint update (Gitea release id 530)

---ci---
project: acdl
phase: 1
milestone: v1.19
status: complete
phase_role: execution
requirements:
  covered: [REQ-229]
  partial: []
---/ci---

.ciagent/CHECKPOINT.json

@@ -1,12 +1,13 @@
 {
   "phase": 1,
-  "stage": "execute",
+  "stage": "complete",
   "milestone": "v1.19",
   "phase_role": "execution",
   "attempts": 0,
-  "updated_at": "2026-08-06T19:30:00Z",
+  "updated_at": "2026-08-06T20:00:00Z",
   "milestone_complete": false,
-  "tag": null,
+  "tag": "v1.18.0",
+  "release_id": 530,
   "requirements": ["REQ-229"],
-  "notes": "v1.19 P1 complete: scripts/sync_to_nova.sh replaces sync_to_gl.sh. Manual-only 2nd-release pipeline into ~/nova (separate GitLab repo, consumer/platform-team audience). Consumer subset rsync, 13 fixed-order domain commits via positional -m, conventional-commit validation. 8 new tests pass (TestSyncToNovaScript). Pre-existing test_attestation_event_emission failure (env-dependent: NOVA_ATTESTATION_SIGNING_KEY_ID unset, D-089) reproduced on clean main — unrelated. Next: P2 final-review-ship -> tag v1.18.0."
+  "notes": "v1.19 P1 SHIP complete: tag v1.18.0 (first patch on v1.18.x line), Gitea release id 530 created. 4-layer verify PASS. Next: P2 final-review-ship (review + audit + milestone complete)."
 }