Initial commit: WBX Spring Framework Core

Spring Boot 3.5.0 + Java 21 기반 엔터프라이즈 프레임워크
- Auth: JWT, MFA/TOTP, OAuth2 SSO, PasswordPolicy, LoginHistory
- RBAC: Role-Permission, DeptScope, Redis 캐시
- Approval: Handler 패턴 결재 엔진
- Notification: SSE 실시간 알림
- File: Local/Azure Blob/AWS S3/GCP Storage
- DataSource: Multi-DB 라우팅 (MySQL/PG/Oracle/MSSQL)
- Admin: Thymeleaf 11화면 콘솔
- Compat: WBX FastAPI 호환 (에러/페이징)
- Flyway: 4종 DBMS 마이그레이션
- Scripts: install.bat/sh, deploy-prod.sh
- Docs: 설치가이드(OnPremise/Cloud), 개발자가이드 PDF

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,50 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Runtime ###
+*.log
+server.log
+uploads/
+temp/
+
+### Environment ###
+.env
+.env.local
+*.pem
+*.key
+.claude/