chore: update docs

frontend/src/features/subscription/CLAUDE.md

@@ -1,12 +1,11 @@
-# frontend/src/features/subscription/
-
-Subscription and billing management feature with Stripe integration.
+# subscription/
 
 ## Files
 
 | File | What | When to read |
 | ---- | ---- | ------------ |
 | `README.md` | Feature overview and API integration | Understanding subscription flow |
+| `index.ts` | Feature barrel export | Importing subscription components |
 
 ## Subdirectories
 
@@ -19,15 +18,3 @@ Subscription and billing management feature with Stripe integration.
 | `pages/` | Desktop subscription page | Desktop implementation |
 | `mobile/` | Mobile subscription screen | Mobile implementation |
 | `constants/` | Subscription plan configurations | Plan pricing and features |
-
-## Key Patterns
-
-- Desktop: MUI components with sx props
-- Mobile: Tailwind classes with GlassCard
-- Stripe Elements for payment methods
-- React Query for data fetching
-- Toast notifications for user feedback
-
-## Environment Variables
-
-- `VITE_STRIPE_PUBLISHABLE_KEY` - Required for Stripe Elements initialization