Initial commit: OAuth 2.0 인증 시스템 with APISIX API Gateway

- FastAPI 백엔드 + MongoDB + Redis 구성
- React + Vite + TypeScript + shadcn/ui 프론트엔드
- Apache APISIX API Gateway 통합
- Docker Compose 기반 개발 환경
- 3단계 권한 체계 (System Admin, Group Admin, User)
- 동적 테마 지원
- 환경별 설정 (dev/vei/prod)

🤖 Generated with Claude Code

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

oauth/backend/requirements.txt

@@ -0,0 +1,25 @@
+fastapi==0.115.0
+uvicorn[standard]==0.30.6
+python-multipart==0.0.9
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+motor==3.5.1
+redis==5.0.7
+pydantic==2.9.1
+pydantic-settings==2.4.0
+python-dotenv==1.0.1
+httpx==0.27.0
+celery==5.4.0
+flower==2.0.1
+pytest==8.3.2
+pytest-asyncio==0.24.0
+black==24.8.0
+ruff==0.6.3
+authlib==1.3.1
+itsdangerous==2.2.0
+email-validator==2.2.0
+Pillow==10.4.0
+cryptography==42.0.8
+aiofiles==24.1.0
+python-dateutil==2.9.0
+pytz==2024.1