Q70: provider cooldowns survive restarts

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/main/services/task-execution-service.ts

@@ -83,7 +83,7 @@ export class TaskExecutionService {
     this.audit = new AuditService(db);
     this.organization = new OrganizationService(db);
     this.chat = new ChatService(db);
-    this.cooldowns = new ProviderCooldowns(now);
+    this.cooldowns = new ProviderCooldowns(db, now);
     this.heartbeat = new HeartbeatScheduler(db, this.cooldowns, now, notifyDataChanged);
   }