feat(billing): integrate Stripe for subscription management and billing access

- Added billing-related fields to the User model in the database.
- Implemented functions for managing billing access, including trial periods and subscription statuses.
- Created new billing utility functions for Stripe integration.
- Updated onboarding page to include billing overview and workspace creation eligibility.
- Enhanced route access checks to require billing access for certain actions.
- Implemented cleanup scripts for expired billing workspaces and associated media.
- Updated header component to conditionally show app navigation based on billing access.
- Added new migrations for billing-related database changes.

scripts/r2-orphan-cleanup.ts

@@ -1,6 +1,7 @@
 import { DeleteObjectCommand, ListObjectsV2Command, type ListObjectsV2CommandInput } from '@aws-sdk/client-s3';
 import { db, disconnectDb } from '../lib/db';
 import { r2Client, R2_BUCKET_NAME } from '../lib/r2';
+import { cleanupExpiredBillingWorkspaces } from './expired-billing-cleanup';
 
 const UNATTACHED_UPLOAD_TTL_MS = 15 * 60 * 1000;
 const CHUNK_SIZE = 500;
@@ -127,6 +128,10 @@ async function main() {
   const dryRun = process.argv.includes('--dry-run');
   console.log(`[r2-orphan-cleanup] Starting (${dryRun ? 'dry-run' : 'delete mode'})`);
 
+  const expiredBillingCleanup = await cleanupExpiredBillingWorkspaces({ dryRun });
+  console.log(`[r2-orphan-cleanup] Expired owner workspaces scanned: ${expiredBillingCleanup.scanned}`);
+  console.log(`[r2-orphan-cleanup] Expired owner workspaces deleted: ${expiredBillingCleanup.deleted}`);
+
   const { candidates, scanned } = await listCleanupCandidates();
   console.log(`[r2-orphan-cleanup] Scanned: ${scanned}, eligible (old enough): ${candidates.length}`);