Revise README with updated tech stack and instructions

Updated README.md to reflect changes in tech stack, development instructions, and migration commands, translating sections to Japanese.

Author: tknkaa

README.md

@@ -2,52 +2,39 @@
 
 五月祭・駒場祭用
 
-## Tech Stack
+## 技術スタック
 
-- **Frontend**: React Router v7 (SSR), TailwindCSS + DaisyUI
-- **Backend**: Cloudflare Workers
-- **Database**: Cloudflare D1 (SQLite), Drizzle ORM
-- **Auth**: Better-Auth (anonymous login)
+- **フレームワーク**: React Router v7 (SSR)
+- **スタイリング**: TailwindCSS + DaisyUI
+- **デプロイ**: Cloudflare Workers
+- **データベース**: Cloudflare D1 (SQLite), Drizzle ORM
+- **認証**: Better-Auth (anonymous login)
 
-## Getting Started
+## 開発
 
 ```bash
-npm install
-npm run dev
+pnpm install
+pnpm dev
 ```
 
-## Database Migrations
+## マイグレーション
 
-### Local Development
+### ローカル
 
 ```bash
-# Generate migration from schema changes
-npx drizzle-kit generate --name <migration_name>
+pnpm drizzle-kit generate --name <migration_name>
 
-# Apply migration to local D1
-npx drizzle-kit migrate
+pnpm drizzle-kit migrate
 ```
 
-### Better-Auth Schema Generation
+### Better-Auth
 
 ```bash
-# Generate auth schema to match DB schema location
-npx auth generate --output ./app/lib/db/auth-schema.ts --adapter drizzle --dialect sqlite
+pnpx auth generate --output ./app/db/auth-schema.ts --adapter drizzle --dialect sqlite
 ```
 
-### Remote (Production)
+### リモート (Production)
 
 ```bash
-# Apply migration to remote D1
-npx wrangler d1 migrations apply hitori-mahjong-db --remote
+pnpm wrangler d1 migrations apply hitori-mahjong-db --remote
 ```
-
-This reads the generated SQL files from `drizzle/` and applies them to the remote D1 database.
-
-## Available Scripts
-
-- `npm run dev` - Start development server and **generate local D1 instance**
-- `npm run build` - Build for production
-- `npm run deploy` - Build and deploy to Cloudflare (If you push the changes to the main branch, it will trigger a new deploy)
-- `npm run typecheck` - Type checking
-- `npm run format` - Format code with Biome