Replace old 3-tier model (Plus/Pro/Ultra) with 5 size-based tiers (S/M/L/XL/XXL).
New naming: "Mana Quelle" for subscriptions, "Mana Trank" for one-time purchases.
Create new Stripe products and prices, archive old ones, update all UI and seed data.
Subscription tiers: S (500 Mana, 4.99€), M (1000, 9.99€), L (2000, 19.99€),
XL (4000, 39.99€), XXL (10000, 99.99€). Yearly: 20% discount.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add unified pricing components for the Mana credit system:
- Central pricing data with plans, packages, and translations
- ManaPricingSection component with billing toggle and trust indicators
- Pricing pages for Chat and ManaDeck landings
- Footer links updated to /pricing pages
