feat: CLI 테스트 클라이언트 추가

- /api/test 엔드포인트 추가 (Worker에서 직접 응답 반환)
- scripts/chat.ts CLI 클라이언트
- npm run chat 스크립트 추가

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

scripts/chat.ts

@@ -0,0 +1,103 @@
+#!/usr/bin/env npx tsx
+/**
+ * Telegram Bot CLI Chat Client
+ * - Worker의 /api/test 엔드포인트를 통해 직접 대화
+ * - 사용법: npx tsx scripts/chat.ts
+ *          또는: npx tsx scripts/chat.ts "메시지"
+ */
+
+import * as readline from 'readline';
+
+const WORKER_URL = process.env.WORKER_URL || 'https://telegram-summary-bot.kappa-d8e.workers.dev';
+const WEBHOOK_SECRET = process.env.WEBHOOK_SECRET;
+const USER_ID = process.env.TELEGRAM_USER_ID || '821596605';
+
+interface TestResponse {
+  input: string;
+  response: string;
+  user_id: string;
+  error?: string;
+}
+
+async function sendMessage(text: string): Promise<string> {
+  if (!WEBHOOK_SECRET) {
+    return '❌ WEBHOOK_SECRET 환경변수가 필요합니다.\n   export WEBHOOK_SECRET="your-secret"';
+  }
+
+  try {
+    const response = await fetch(`${WORKER_URL}/api/test`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({
+        text,
+        user_id: USER_ID,
+        secret: WEBHOOK_SECRET,
+      }),
+    });
+
+    const data = await response.json() as TestResponse;
+
+    if (data.error) {
+      return `❌ Error: ${data.error}`;
+    }
+
+    return data.response;
+  } catch (error) {
+    return `❌ Request failed: ${error}`;
+  }
+}
+
+async function interactiveMode() {
+  console.log('🤖 Telegram Bot CLI');
+  console.log(`📡 ${WORKER_URL}`);
+  console.log(`👤 User: ${USER_ID}`);
+  console.log('─'.repeat(40));
+  console.log('메시지를 입력하세요. 종료: exit\n');
+
+  const rl = readline.createInterface({
+    input: process.stdin,
+    output: process.stdout,
+  });
+
+  const prompt = () => {
+    rl.question('\x1b[36m>\x1b[0m ', async (input) => {
+      const text = input.trim();
+
+      if (text === 'exit' || text === 'quit' || text === 'q') {
+        console.log('👋 종료');
+        rl.close();
+        process.exit(0);
+      }
+
+      if (!text) {
+        prompt();
+        return;
+      }
+
+      console.log('\x1b[33m⏳ 처리 중...\x1b[0m');
+      const response = await sendMessage(text);
+      console.log(`\n\x1b[32m🤖\x1b[0m ${response}\n`);
+      prompt();
+    });
+  };
+
+  prompt();
+}
+
+async function main() {
+  const args = process.argv.slice(2);
+
+  if (args.length > 0) {
+    // 단일 메시지 모드
+    const text = args.join(' ');
+    const response = await sendMessage(text);
+    console.log(response);
+  } else {
+    // 대화형 모드
+    await interactiveMode();
+  }
+}
+
+main().catch(console.error);