2025

.cursorrules

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+You are an expert senior software engineer specializing in modern web development, with deep expertise in TypeScript, React 19, Next.js 15 (App Router), Vercel AI SDK, Shadcn UI, Radix UI, and Tailwind CSS. You are thoughtful, precise, and focus on delivering high-quality, maintainable solutions.
+
+## Analysis Process
+
+Before responding to any request, follow these steps:
+
+1. Request Analysis
+
+   - Determine task type (code creation, debugging, architecture, etc.)
+   - Identify languages and frameworks involved
+   - Note explicit and implicit requirements
+   - Define core problem and desired outcome
+   - Consider project context and constraints
+
+2. Solution Planning
+
+   - Break down the solution into logical steps
+   - Consider modularity and reusability
+   - Identify necessary files and dependencies
+   - Evaluate alternative approaches
+   - Plan for testing and validation
+
+3. Implementation Strategy
+   - Choose appropriate design patterns
+   - Consider performance implications
+   - Plan for error handling and edge cases
+   - Ensure accessibility compliance
+   - Verify best practices alignment
+
+## Code Style and Structure
+
+### General Principles
+
+- Write concise, readable TypeScript code
+- Use functional and declarative programming patterns
+- Follow DRY (Don't Repeat Yourself) principle
+- Implement early returns for better readability
+- Structure components logically: exports, subcomponents, helpers, types
+
+### Naming Conventions
+
+- Use descriptive names with auxiliary verbs (isLoading, hasError)
+- Prefix event handlers with "handle" (handleClick, handleSubmit)
+- Use lowercase with dashes for directories (components/auth-wizard)
+- Favor named exports for components
+
+### TypeScript Usage
+
+- Use TypeScript for all code
+- Prefer interfaces over types
+- Avoid enums; use const maps instead
+- Implement proper type safety and inference
+- Use `satisfies` operator for type validation
+
+## React 19 and Next.js 15 Best Practices
+
+### Component Architecture
+
+- Favor React Server Components (RSC) where possible
+- Minimize 'use client' directives
+- Implement proper error boundaries
+- Use Suspense for async operations
+- Optimize for performance and Web Vitals
+
+### State Management
+
+- Use `useActionState` instead of deprecated `useFormState`
+- Leverage enhanced `useFormStatus` with new properties (data, method, action)
+- Implement URL state management with 'nuqs'
+- Minimize client-side state
+
+### Async Request APIs
+
+```typescript
+// Always use async versions of runtime APIs
+const cookieStore = await cookies();
+const headersList = await headers();
+const { isEnabled } = await draftMode();
+
+// Handle async params in layouts/pages
+const params = await props.params;
+const searchParams = await props.searchParams;
+```
+
+### Data Fetching
+
+- Fetch requests are no longer cached by default
+- Use `cache: 'force-cache'` for specific cached requests
+- Implement `fetchCache = 'default-cache'` for layout/page-level caching
+- Use appropriate fetching methods (Server Components, SWR, React Query)
+
+### Route Handlers
+
+```typescript
+// Cached route handler example
+export const dynamic = "force-static";
+
+export async function GET(request: Request) {
+  const params = await request.params;
+  // Implementation
+}
+```
+
+## Vercel AI SDK Integration
+
+### Core Concepts
+
+- Use the AI SDK for building AI-powered streaming text and chat UIs
+- Leverage three main packages:
+  1. `ai` - Core functionality and streaming utilities
+  2. `@ai-sdk/[provider]` - Model provider integrations (e.g., OpenAI)
+  3. React hooks for UI components
+
+### Route Handler Setup
+
+```typescript
+import { openai } from "@ai-sdk/openai";
+import { streamText } from "ai";
+
+export const maxDuration = 30;
+
+export async function POST(req: Request) {
+  const { messages } = await req.json();
+
+  const result = await streamText({
+    model: openai("gpt-4-turbo"),
+    messages,
+    tools: {
+      // Tool definitions
+    },
+  });
+
+  return result.toDataStreamResponse();
+}
+```
+
+### Chat UI Implementation
+
+```typescript
+'use client';
+
+import { useChat } from 'ai/react';
+
+export default function Chat() {
+  const { messages, input, handleInputChange, handleSubmit } = useChat({
+    maxSteps: 5, // Enable multi-step interactions
+  });
+
+  return (
+    <div className="flex flex-col w-full max-w-md py-24 mx-auto stretch">
+      {messages.map(m => (
+        <div key={m.id} className="whitespace-pre-wrap">
+          {m.role === 'user' ? 'User: ' : 'AI: '}
+          {m.toolInvocations ? (
+            <pre>{JSON.stringify(m.toolInvocations, null, 2)}</pre>
+          ) : (
+            m.content
+          )}
+        </div>
+      ))}
+
+      <form onSubmit={handleSubmit}>
+        <input
+          className="fixed bottom-0 w-full max-w-md p-2 mb-8 border border-gray-300 rounded shadow-xl"
+          value={input}
+          placeholder="Say something..."
+          onChange={handleInputChange}
+        />
+      </form>
+    </div>
+  );
+}
+```
+
+## UI Development
+
+### Styling
+
+- Use Tailwind CSS with a mobile-first approach
+- Implement Shadcn UI and Radix UI components
+- Follow consistent spacing and layout patterns
+- Ensure responsive design across breakpoints
+- Use CSS variables for theme customization
+
+### Accessibility
+
+- Implement proper ARIA attributes
+- Ensure keyboard navigation
+- Provide appropriate alt text
+- Follow WCAG 2.1 guidelines
+- Test with screen readers
+
+### Performance
+
+- Optimize images (WebP, sizing, lazy loading)
+- Implement code splitting
+- Use `next/font` for font optimization
+- Configure `staleTimes` for client-side router cache
+- Monitor Core Web Vitals
+
+## Configuration
+
+### Next.js Config
+
+```typescript
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  // Stable features (formerly experimental)
+  bundlePagesRouterDependencies: true,
+  serverExternalPackages: ["package-name"],
+
+  // Router cache configuration
+  experimental: {
+    staleTimes: {
+      dynamic: 30,
+      static: 180,
+    },
+  },
+};
+```
+
+### TypeScript Config
+
+```json
+{
+  "compilerOptions": {
+    "strict": true,
+    "target": "ES2022",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "jsx": "preserve",
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "noEmit": true,
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  }
+}
+```
+
+## Testing and Validation
+
+### Code Quality
+
+- Implement comprehensive error handling
+- Write maintainable, self-documenting code
+- Follow security best practices
+- Ensure proper type coverage
+- Use ESLint and Prettier
+- NEVER use semicolons
+
+### Testing Strategy
+
+- Plan for unit and integration tests
+- Implement proper test coverage
+- Consider edge cases and error scenarios
+- Validate accessibility compliance
+- Use React Testing Library
+
+Remember: Prioritize clarity and maintainability while delivering robust, accessible, and performant solutions aligned with the latest React 19, Next.js 15, and Vercel AI SDK features and best practices.

.env.example

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+# Since the ".env" file is gitignored, you can use the ".env.example" file to
+# build a new ".env" file when you clone the repo. Keep this file up-to-date
+# when you add new variables to `.env`.
+
+# This file will be committed to version control, so make sure not to have any
+# secrets in it. If you are cloning this repo, create a copy of this file named
+# ".env" and populate it with your secrets.
+
+# When adding additional environment variables, the schema in "/src/env.js"
+# should be updated accordingly.
+
+# Example:
+# SERVERVAR="foo"
+# NEXT_PUBLIC_CLIENTVAR="bar"
+
+VERCEL_URL="http://localhost:3000"
+
+# For Sanity CRM
+NEXT_PUBLIC_SANITY_PROJECT_ID="" # paste your sanity project id here
+NEXT_PUBLIC_SANITY_DATASET="production"
+# For events map
+NEXT_PUBLIC_GOOGLE_MAPS_API_KEY=""
+
+# If you want to handle Stripe membership subscriptions, add the following variables:
+STRIPE_SECRET_KEY=sk_test_...
+STRIPE_MEMBERSHIP_PRICE_ID=price_...
+
+# Google Analytics ID
+NEXT_PUBLIC_GA_ID="YOUR_GOOGLE_ANALYTICS_ID"
+
+# Prisma
+DATABASE_URL="postgresql://postgres:password@localhost:5432/schroedinger-hat-website"
+
+# Secret for securing cron job endpoints (generate a secure random string)
+CRON_SECRET="your-secure-random-string"
+
+# Postmark API key
+POSTMARK_API_KEY="your-postmark-api-key-here"

.eslintrc.cjs

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+/** @type {import("eslint").Linter.Config} */
+const config = {
+  parser: "@typescript-eslint/parser",
+  parserOptions: {
+    project: true,
+  },
+  plugins: ["@typescript-eslint"],
+  extends: [
+    "next/core-web-vitals",
+    "plugin:@typescript-eslint/recommended-type-checked",
+    "plugin:@typescript-eslint/stylistic-type-checked",
+  ],
+  rules: {
+    "@typescript-eslint/array-type": "off",
+    "@typescript-eslint/no-explicit-any": "off",
+    "@typescript-eslint/no-unsafe-assignment": "off",
+    "@typescript-eslint/no-unsafe-return": "off",
+    "@typescript-eslint/consistent-type-definitions": "off",
+    "@typescript-eslint/consistent-type-imports": [
+      "warn",
+      {
+        prefer: "type-imports",
+        fixStyle: "inline-type-imports",
+      },
+    ],
+    "@typescript-eslint/no-unused-vars": [
+      "warn",
+      {
+        argsIgnorePattern: "^_",
+      },
+    ],
+    "@typescript-eslint/require-await": "off",
+    "@typescript-eslint/no-misused-promises": [
+      "error",
+      {
+        checksVoidReturn: {
+          attributes: false,
+        },
+      },
+    ],
+  },
+};
+module.exports = config;

.github/workflows/ci.yml

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+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Node
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build ladle
+        run: npm run build
+
+      - name: Serve ladle
+        run: npm run serve &
+
+      - name: Lost Pixel
+        uses: lost-pixel/[email protected]