feat: initial ImportEx API setup with Hono + Drizzle + PostgreSQL

- Hono server with CORS and logging middleware
- Drizzle ORM with PostgreSQL schema (users table)
- Environment config with Zod validation
- Dockerfile for production deployment
- Gitea Actions workflows for dev/main deployment to Coolify
- Health check route

CLAUDE.md

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+Default to using Bun instead of Node.js.
+
+- Use `bun <file>` instead of `node <file>` or `ts-node <file>`
+- Use `bun test` instead of `jest` or `vitest`
+- Use `bun build <file.html|file.ts|file.css>` instead of `webpack` or `esbuild`
+- Use `bun install` instead of `npm install` or `yarn install` or `pnpm install`
+- Use `bun run <script>` instead of `npm run <script>` or `yarn run <script>` or `pnpm run <script>`
+- Use `bunx <package> <command>` instead of `npx <package> <command>`
+- Bun automatically loads .env, so don't use dotenv.
+
+## Project: ImportEx API
+
+Backend API using Hono + Drizzle ORM + PostgreSQL
+
+### Structure
+- `src/index.ts` - Entry point (Hono server)
+- `src/db/` - Drizzle ORM setup and schemas
+- `src/routes/` - Route handlers
+- `src/middleware/` - Hono middleware
+- `src/config/` - Configuration
+- `drizzle/` - Migration files
+
+### Commands
+- `bun run dev` - Start development server with hot reload
+- `bun run typecheck` - Run TypeScript type checking
+- `bun run db:generate` - Generate Drizzle migrations
+- `bun run db:migrate` - Run Drizzle migrations
+
+### Environment
+- `dev` branch → deploys to api.dev.globalimex.online
+- `main` branch → deploys to api.globalimex.online
+
+### Coolify Deployment
+- Uses Gitea Actions (`.gitea/workflows/`)
+- Coolify API: https://admin237coolifyprivate.globalimex.online/api/v1
+- Deploys via webhook on push to `dev` or `main`
+
+## Testing
+
+Use `bun test` to run tests.
+
+## Lint/Typecheck
+
+- `bun run typecheck` - Run TypeScript type checking