add pm2 config

pm2.config.cjs

@@ -0,0 +1,39 @@
+/**
+ * PM2 ecosystem configuration for the consumable temp request API.
+ *
+ * This configuration assumes the project runs with Bun so that TypeScript files can be executed directly.
+ * Adjust the `interpreter` field if you prefer a different runtime (e.g. `node` with `tsx`).
+ */
+
+const path = require('path');
+const dotenv = require('dotenv');
+
+const instances = Number.parseInt(process.env.WEB_CONCURRENCY ?? '1', 10) || 1;
+const { parsed: envFromFile = {} } = dotenv.config({ path: path.join(__dirname, '.env') });
+
+module.exports = {
+	apps: [
+		{
+			name: 'sm-server',
+			script: 'index.ts',
+			cwd: __dirname,
+			interpreter: process.env.PM2_INTERPRETER ?? 'bun',
+			autorestart: true,
+			restart_delay: 4000,
+			kill_timeout: 5000,
+			instances,
+			exec_mode: instances > 1 ? 'cluster' : 'fork',
+			watch: process.env.NODE_ENV !== 'production',
+			ignore_watch: ['generated', 'node_modules', '.git'],
+			env: {
+				...envFromFile,
+				NODE_ENV: 'development'
+			},
+			env_production: {
+				...envFromFile,
+				NODE_ENV: 'production'
+			},
+			time: true
+		}
+	]
+};