feat: 웹사이트 표준화 검사 도구 구현

- 4개 검사 엔진: HTML/CSS, 접근성(WCAG), SEO, 성능/보안 (총 50개 항목)
- FastAPI 백엔드 (9개 API, SSE 실시간 진행, PDF/JSON 리포트)
- Next.js 15 프론트엔드 (6개 페이지, 29개 컴포넌트, 반원 게이지 차트)
- Docker Compose 배포 (Backend:8011, Frontend:3011, MongoDB:27022, Redis:6392)
- 전체 테스트 32/32 PASS

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

backend/app/main.py

@@ -1,9 +1,49 @@
+"""
+Web Inspector API - FastAPI application entry point.
+"""
+
+import logging
+from contextlib import asynccontextmanager
+
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
-from datetime import datetime
 
-app = FastAPI(title="API", version="1.0.0")
+from app.core.database import connect_db, close_db
+from app.core.redis import connect_redis, close_redis
+from app.routers import health, inspections, reports
 
+# Configure logging
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+)
+logger = logging.getLogger(__name__)
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """Application lifespan: connect/disconnect databases."""
+    # Startup
+    logger.info("Starting Web Inspector API...")
+    await connect_db()
+    await connect_redis()
+    logger.info("Web Inspector API started successfully")
+    yield
+    # Shutdown
+    logger.info("Shutting down Web Inspector API...")
+    await close_db()
+    await close_redis()
+    logger.info("Web Inspector API shut down")
+
+
+app = FastAPI(
+    title="Web Inspector API",
+    version="1.0.0",
+    description="URL 기반 웹 표준 검사 도구 API",
+    lifespan=lifespan,
+)
+
+# CORS middleware
 app.add_middleware(
     CORSMiddleware,
     allow_origins=["*"],
@@ -12,6 +52,7 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-@app.get("/health")
-async def health_check():
-    return {"status": "healthy", "timestamp": datetime.now().isoformat()}
+# Register routers
+app.include_router(health.router, prefix="/api", tags=["Health"])
+app.include_router(inspections.router, prefix="/api", tags=["Inspections"])
+app.include_router(reports.router, prefix="/api", tags=["Reports"])