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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Development Commands
+
+### Core Development
+- `pnpm dev` - Start development server with content collections
+- `pnpm build` - Build the application and content collections
+- `pnpm start` - Start production server
+- `pnpm lint` - Run Biome linter (use for code quality checks)
+- `pnpm format` - Format code with Biome
+
+### Database Operations (Drizzle ORM)
+- `pnpm db:generate` - Generate new migration files based on schema changes
+- `pnpm db:migrate` - Apply pending migrations to the database
+- `pnpm db:push` - Sync schema changes directly to the database (development only)
+- `pnpm db:studio` - Open Drizzle Studio for database inspection and management
+
+### Content and Email
+- `pnpm content` - Process MDX content collections
+- `pnpm email` - Start email template development server on port 3333
+
+## Project Architecture
+
+This is a Next.js 15 full-stack SaaS application with the following key architectural components:
+
+### Core Stack
+- **Framework**: Next.js 15 with App Router
+- **Database**: PostgreSQL with Drizzle ORM
+- **Authentication**: Better Auth with social providers (Google, GitHub)
+- **Payments**: Stripe integration with subscription and one-time payments
+- **UI**: Radix UI components with TailwindCSS
+- **State Management**: Zustand for client-side state
+- **Internationalization**: next-intl with English and Chinese locales
+- **Content**: Fumadocs for documentation and MDX for content
+- **Code Quality**: Biome for formatting and linting
+
+### Key Directory Structure
+- `src/app/` - Next.js app router with internationalized routing
+- `src/components/` - Reusable React components organized by feature
+- `src/lib/` - Utility functions and shared code
+- `src/db/` - Database schema and migrations
+- `src/actions/` - Server actions for API operations
+- `src/stores/` - Zustand state management
+- `src/hooks/` - Custom React hooks
+- `src/config/` - Application configuration files
+- `src/i18n/` - Internationalization setup
+- `src/mail/` - Email templates and mail functionality
+- `src/payment/` - Stripe payment integration
+- `src/credits/` - Credit system implementation
+- `content/` - MDX content files for docs and blog
+- `messages/` - Translation files (en.json, zh.json) for internationalization
+
+### Authentication & User Management
+- Uses Better Auth with PostgreSQL adapter
+- Supports email/password and social login (Google, GitHub)
+- Includes user management, email verification, and password reset
+- Admin plugin for user management and banning
+- Automatic newsletter subscription on user creation
+
+### Payment System
+- Stripe integration for subscriptions and one-time payments
+- Three pricing tiers: Free, Pro (monthly/yearly), and Lifetime
+- Credit system with packages for pay-per-use features
+- Customer portal for subscription management
+
+### Feature Modules
+- **Blog**: MDX-based blog with pagination and categories
+- **Docs**: Fumadocs-powered documentation
+- **AI Features**: Image generation with multiple providers (OpenAI, Replicate, etc.)
+- **Newsletter**: Email subscription system
+- **Analytics**: Multiple analytics providers support
+- **Storage**: S3 integration for file uploads
+
+### Development Workflow
+1. Use TypeScript for all new code
+2. Follow Biome formatting rules (single quotes, trailing commas)
+3. Write server actions in `src/actions/`
+4. Use Zustand for client-side state management
+5. Implement database changes through Drizzle migrations
+6. Use Radix UI components for consistent UI
+7. Follow the established directory structure
+8. Use proper error handling with error.tsx and not-found.tsx
+9. Leverage Next.js 15 features like Server Actions
+10. Use `next-safe-action` for secure form submissions
+
+### Configuration
+- Main config in `src/config/website.tsx`
+- Environment variables template in `env.example`
+- Database config in `drizzle.config.ts`
+- Biome config in `biome.json` with specific ignore patterns
+- TypeScript config with path aliases (@/* for src/*)
+
+### Testing and Quality
+- Use Biome for linting and formatting
+- TypeScript for type safety
+- Environment variables for configuration
+- Proper error boundaries and not-found pages
+- Zod for runtime validation
+
+## Important Notes
+
+- The project uses pnpm as the package manager
+- Database schema is in `src/db/schema.ts` with auth, payment, and credit tables
+- Email templates are in `src/mail/templates/`
+- The app supports both light and dark themes
+- Content is managed through MDX files in the `content/` directory
+- The project includes comprehensive internationalization support