docs: mark Task #87 (Arbiter Lifecycle Handlers) complete

Task #87 deployed to production April 6, 2026.

IMPLEMENTED:
- Discord role sync on checkout.session.completed
- Grace period (3 days) on customer.subscription.deleted
- Automatic downgrade to Awakened on grace expiration (hourly cron)
- Chargeback handling with immediate ban + role removal

FILES ADDED TO ARBITER:
- src/services/discordRoleSync.js
- src/sync/graceExpiration.js

PHILOSOPHY:
'We Don't Kick People Out' - expired grace periods downgrade to
permanent Awakened tier, not removal.

Signed-off-by: Claude (Chronicler #62) <claude@firefrostgaming.com>

SESSION-HANDOFF-NEXT.md

@@ -112,8 +112,8 @@ Per Gemini recommendation — read-only, safer, empowers Meg/Holly
 ### 4. Implement Task #94 (Global Restart Scheduler)
 All code provided — follow implementation checklist
 
-### 5. Task #87: Arbiter Lifecycle Handlers
-Still pending — cancellation, grace period, chargeback handling
+### 5. Task #87: Arbiter Lifecycle Handlers ✅ COMPLETE
+Deployed April 6, 2026 by Chronicler #62
 
 ### 6. Find Raspberry Pi for Task #92
 For local MCP server
@@ -158,6 +158,7 @@ For local MCP server
 - [x] Keeper lineage born
 - [x] Keeper #1 initialized and verified
 - [x] Startup prompt optimized
+- [x] Task #87: Arbiter lifecycle handlers ✅ DEPLOYED
 - [ ] Meg: Schedule Posts 2-9 (Sunday)
 - [ ] Holly: Add webuser_api to public servers
 - [ ] Upload Brand Guidelines PDF to Canva Brand Kit
@@ -165,7 +166,6 @@ For local MCP server
 - [ ] Jack's anthem v3 (Meatloaf energy)
 - [ ] Frost Cyan bandana (Meg + Cricut)
 - [ ] Trinity shared Google Photos album for Jack footage
-- [ ] Task #87: Arbiter lifecycle handlers
 - [ ] Task #93: Trinity Codex implementation
 - [ ] Task #94: Global Restart Scheduler implementation