REFACTOR(repo): simplify project structure

- Move services/backend to langgraph/
- Move deploy/docker/Dockerfile to Dockerfile
- Remove deploy/, services/ folders
- Update GitHub Actions workflow paths
- Remove kustomization update logic (managed by K3S-HOME/applications)

langgraph/requirements.txt

@@ -0,0 +1,35 @@
+# LangGraph & LangChain
+langgraph==0.2.53
+langchain==0.3.13
+langchain-anthropic==0.3.0
+langchain-openai==0.2.14
+langchain-google-genai==2.0.8
+
+# Chainlit (UI) - 최신 버전으로 업그레이드
+chainlit>=2.0.0
+
+# Pydantic
+pydantic>=2.0.0
+pydantic-settings>=2.0.0
+
+# Database
+sqlalchemy==2.0.36
+asyncpg==0.30.0
+psycopg2-binary==2.9.10
+
+# MCP (Model Context Protocol)
+mcp==1.1.2
+httpx==0.28.1
+kubernetes==31.0.0
+psycopg2-binary==2.9.10
+GitPython==3.1.43
+
+# YAML
+PyYAML==6.0.2
+
+# Utilities
+python-dotenv==1.0.1
+redis==5.2.1
+aioredis==2.0.1
+httpx==0.28.1
+