- KB RAG 전체 파이프라인: 업로드, 파싱(xlsx/pdf/docx/text), 임베딩, Qdrant 인덱싱
- KB 관리 UI(14번 탭): 로그인, 문서 목록, 업로드, 삭제, 재인덱스
- OllamaController: 한글 시스템 프롬프트, plant_context.md 외부 파일화, SSE tool_start/tool_result 이벤트
- 프론트: 툴 실행 카드, KB 인용 링크, 표 자동 렌더, 추천 질문 칩
- nl2sql_worker: history_table.recorded_at 사용, tag_metadata 응답 개선
- DB: KB 테이블 5개 DDL + 시드, pgcrypto 확장
- OllamaController: Ollama/vLLM 프록시 API (채팅, 스트리밍, 모델 목록, 설정)
- UI: 새 대화 탭, 세션 관리, Markdown 렌더링, 스트리밍 응답
- vLLM: OpenAI-compatible API 지원, MCP function calling 통합
- Fix: McpClient DI 팩토리 등록 (HttpClient BaseAddress 문제 해결)
- Fix: llm-model.json 직렬화 JsonSerializer 사용
- Fix: nl2sql_worker KST 시간대 표시 (AT TIME ZONE Asia/Seoul)
- Program.cs: Ollama/vLLM HttpClient 등록 (1800s timeout)
Major project initialization and feature implementation:
**Core Features:**
- OPC UA client for Honeywell Experion HS R530 integration
- Real-time data streaming and history data retrieval
- Text-to-SQL query engine with TimeScaleDB
- JSON-based node configuration system
- SQLite database with migration support
**Architecture:**
- Clean architecture with Domain, Application, Infrastructure layers
- ASP.NET Core Web API frontend
- Web UI with real-time visualization
- PKI-based OPC UA authentication (TLS)
**Infrastructure Components:**
- ExperionOpcClient: OPC UA connection management
- ExperionRealtimeService: Real-time data streaming
- ExperionHistoryService: Historical data queries
- TextToSqlService: Natural language to SQL queries
- SqlValidator: SQL injection prevention
**Database:**
- TimescaleDB integration (recommended) or SQLite fallback
- Entity Framework Core with Extenstion methods
- OPCTag, KeyValue tables for data storage
**Security:**
- Certificate-based OPC UA endpoint security
- SSL/TLS encryption for database connections
- Output param binding injection prevention
**Testing:**
- Unit tests for TextToSqlService and SqlValidator
- Integration tests for Korean time range extraction
See REVIEW_REQUEST.md for detailed code review information.
