1
Score-beat notify
After score submit, find who just got passed → push them "you just got passed by @xxx"
Any game with a score gets this · 14 shipped
2
Feed needs a verb
Every row in any browse / Wall / feed has a verb (KEEP / ♥ / KISS)
Verb fires publish + notify + badge + chip
Any game with a wall / feed gets this
3
Cross-user wall
Use save/get/data/list's "last 6 users' saves" as the source for a cross-user feed
Any game that keeps artifacts gets this (Daily Arcana / Pulp Hour / Hour Capsule)
4
Notify 3 hard rules
✓ self-guard (no self-notify)
✓ 24h dedupe (same action + same target → once per 24h)
✓ author cap (≤ 5 per day per recipient)