docs(04): finalize phase plan (coverage gates + roadmap annotations)

.planning/phases/04-shared-lists-live-sync/04-01-PLAN.md

@@ -25,7 +25,7 @@ user_setup: []
 
 must_haves:
   truths:
-    - "User can tap a 'Lists' tab in a bottom tab bar and land on a /lists route"
+    - "User can tap a 'Lists' tab in a bottom tab bar (D-16) and land on a /lists route served by react-router (D-17)"
     - "The /lists route renders an empty state when no lists exist"
     - "The new lists/list_items/list_shares tables exist in MariaDB after migration"
     - "API test harness runs and the Phase 4 RED test stubs execute (failing, not erroring on import)"

.planning/phases/04-shared-lists-live-sync/04-06-PLAN.md

@@ -19,7 +19,7 @@ user_setup: []
 must_haves:
   truths:
     - "When one member adds/checks/deletes/reorders an item, the other member's open list updates within seconds without a manual refresh"
-    - "A private list's events are never delivered to a member who is not its owner (D-04)"
+    - "A private list's events sync to the owner's own devices (D-03) but are never delivered to a member who is not its owner (D-04)"
     - "On SSE reconnect the client full-refetches the affected list (D-10)"
     - "After capped backoff is exhausted, the UI shows an 'Updates paused' indicator and stops hammering (D-11); polling keeps data fresh (D-12)"
   artifacts: