.planning/PROJECT.md

@@ -36,6 +36,7 @@ Deferred to backlog: self-service provider onboarding (999.5) and provider abstr
 - [x] Shared collaborative lists (groceries, gift ideas) co-edited by both members, stored in MariaDB — **Validated in Phase 4 (shared-lists-live-sync)**: list + item CRUD, fractional-rank drag-reorder, member-scoped access (no cross-tenant leak proven at route layer).
 - [x] Live list sync so co-edits appear without manual refresh — **Validated in Phase 4**: scoped SSE fan-out over Pangolin (transport smoke-tested), bounded-backoff reconnect, co-edits land within seconds.
 - [x] Web Push notifications for event reminders and list changes — **Validated in Phase 5 (web-push-notifications)**: VAPID push for reminders, event-change, and coalesced list alerts; on-device UAT 1/2/5 PASS (iOS reminder delivery, iOS push, coalescing). Android event-change on-device confirmation + iOS standalone spinner remain device-only spot-checks at go-live.
+- [x] Faster write-back so edits reach Fastmail in ~1–2s instead of ~15s (CAL-15) — **Validated in Phase 9 (faster-write-back)**: event-driven outbox drain via a zero-dependency in-process EventEmitter (`outboxTrigger.ts`); a committed enqueue publishes a fire-and-forget `signalOutboxDrain()` that funnels through the existing `isDraining`-guarded drain with a `drainRequested` trailing-re-drain, preserving optimistic-202, create-before-delete on moves, exactly-once per uid, and the 15s `setInterval` fallback. 5/5 success criteria verified; trigger-wiring tests assert SC-1/D-05/D-07.
 
 ### Active
 
@@ -119,4 +120,4 @@ This document evolves at phase transitions and milestone boundaries.
 
 ---
 
-_Last updated: 2026-06-11 — Phase 7 (Mobile Test Harness) complete; TEST-01/TEST-02 validated_
+_Last updated: 2026-06-12 — Phase 9 (Faster Write-Back) complete; CAL-15 validated_