Replace billing plans with per-runtime usage pricing catalog.

Store explicit hourly/monthly/yearly rates in pricing_rates and addon_rates, compute deploy costs without cycle conversion, and simplify admin UI and wallet payment to cycle-only.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/lifecycle/app-lifecycle.service.ts

@@ -57,7 +57,6 @@ export class AppLifecycleService implements OnModuleInit, OnModuleDestroy {
   async activateApp(
     appId: string,
     billingCycle: BillingCycle,
-    planId: string,
     planExpiresAt?: Date,
   ): Promise<Application> {
     const app = await this.appRepo.findOne({ where: { id: appId } });
@@ -68,7 +67,6 @@ export class AppLifecycleService implements OnModuleInit, OnModuleDestroy {
       ? planExpiresAt
       : this.calculateExpiry(now, billingCycle);
 
-    app.planId = planId;
     app.billingCycle = billingCycle;
     app.lifecycleStatus = AppLifecycleStatus.ACTIVE;
     app.planExpiresAt = expiresAt;
@@ -225,7 +223,7 @@ export class AppLifecycleService implements OnModuleInit, OnModuleDestroy {
   // ─── Auto-renew for hourly plans ──────────────────────────────────
 
   private async tryAutoRenew(app: Application): Promise<boolean> {
-    if (!app.planId) return false;
+    if (!app.billingCycle) return false;
 
     try {
       const cost = await this.billingService.calculateCostForApp(app);