[Feature] Stripe Payments - Photo Bucket Purchase

[RobACurtis]

User Story

As a user, I want to pay for a photo bucket tier so I can start
collecting photos from my guests.

Checklist

Setup

• Create Stripe account and get API keys
• Install Firebase Stripe Extension
• Add Stripe keys to .env
• Define products/prices in Stripe dashboard (Basic $9, Standard $19, Premium $39)

UI

• Create pricing/tier selection page
• Show tier comparison (photo limit, video support, duration)
• Redirect to Stripe Checkout on tier selection
• Show success page after payment
• Show error page if payment fails

Logic

• On successful payment, create bucket in Firestore with correct tier limits
• Store payment status and tier in Firestore under user's bucket
• Gate bucket creation behind completed payment

Labels: enhancement, stripe, buckets