AI-Powered Development

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# Project: SaaS Boilerplate
## Tech Stack
- Next.js 14 with App Router
- TypeScript in strict mode
- Prisma with PostgreSQL
- tRPC for API layer
- Tailwind CSS with shadcn/ui

## Code Style Rules
- Use functional components with hooks, never class components
- Prefer named exports over default exports
- All functions must have explicit return types

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// Prompt to Cursor/Claude:
// "Generate comprehensive tests for this service function.
// Include: happy path, edge cases, error handling, and boundary conditions.
// Use Jest with TypeScript. Mock external dependencies."

// Original function
async function createSubscription(
  userId: string,
  planId: string,
  paymentMethodId: string
): Promise<Subscription> {
  const user = await userRepository.findById(userId);

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// Save these as snippets in your IDE for quick access

const PROMPT_TEMPLATES = {
  // Architecture Review
  architectureReview: `
    Review this architecture for a [FEATURE_TYPE]:
    
    Current approach:
    [PASTE_CODE_OR_DESCRIPTION]
    
    Requirements:
    - Scale: [EXPECTED_USERS/REQUESTS]

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# Project Rules for AI Assistant

## Code Style
- Use TypeScript with strict mode
- Prefer functional components with hooks
- Use descriptive variable names (no abbreviations)
- Add JSDoc comments for public functions
- Keep functions under 50 lines

## Architecture Preferences
- Follow the repository pattern for data access
- Use Zod for runtime validation