Add Stripe customer portal for Pro billing management - #7443

Bugbot Analysis Progress (1m 34s elapsed)

✅ Gathered PR context (5s)
✅ Completed bug detection (1m 26s)
✅ Posted analysis results (3s)

Final Result: Bugbot completed review - no new issues found. 1 previously reported issue remain unresolved.

Request ID: serverGenReqId_3a95113f-a6fc-4f7c-9c99-ae2682402cae