feat: MCP 서버 추가 — AI 에이전트용 웹 검사 도구

Node.js + TypeScript MCP 서버 구현:
- 5개 도구: inspect_page, inspect_site, get_inspection, get_issues, get_history
- 듀얼 트랜스포트: stdio (Claude Desktop) + Streamable HTTP (Docker/원격)
- i18n 지원 (영어/한국어)
- Docker 통합 (port 3100) + Nginx /mcp 프록시
- Smithery 레지스트리 배포 설정

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

nginx/nginx.conf

@@ -6,12 +6,29 @@ upstream backend {
     server backend:8000;
 }
 
+upstream mcp {
+    server mcp:3100;
+}
+
 server {
     listen 80;
     server_name web-inspector.yakenator.io;
 
     client_max_body_size 10M;
 
+    # MCP 엔드포인트 (Streamable HTTP)
+    location /mcp {
+        proxy_pass http://mcp;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_read_timeout 180s;
+        proxy_buffering off;
+        proxy_cache off;
+        add_header X-Accel-Buffering no;
+    }
+
     # API 요청 → Backend
     location /api/ {
         proxy_pass http://backend;