Initial commit: HC900 Crawler

Honeywell HC900을 Modbus TCP로 직접 폴링 → gRPC → C# 크롤러 → PostgreSQL.
기존 Experion OPC UA 데이터 경로를 HC900 직접 통신으로 대체.

- industrial-comm/cpp: C++ Modbus 게이트웨이 (gRPC 서버)
- src: C# .NET 8 ASP.NET Core 크롤러 + 웹 UI (3-Layer)
- mcp-server: Python FastMCP (RAG/NL2SQL/P&ID)
- 다중 컨트롤러(N-Controller) 지원

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/load_state_labels.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+"""
+xlsx의 StatusPoint DescriptorState0~7 → hc900.tag_metadata 로드
+실행: python3 scripts/load_state_labels.py
+"""
+import openpyxl
+import psycopg2
+from pathlib import Path
+
+XLSX_PATH = Path(__file__).parent.parent / "docs" / "Sinam_Tag_all.xlsx"
+DB_DSN = "host=localhost port=5432 dbname=iiot_platform user=postgres password=postgres"
+
+wb = openpyxl.load_workbook(XLSX_PATH, read_only=True, data_only=True)
+ws = wb['Sheet1']
+rows = list(ws.iter_rows(values_only=True))
+headers = rows[1]
+col = {h: i for i, h in enumerate(headers) if h}
+
+conn = psycopg2.connect(DB_DSN)
+cur = conn.cursor()
+
+inserted = 0
+for row in rows[2:]:
+    name = str(row[col['ItemName']] or '').strip()
+    cls  = str(row[col['Class']]    or '').strip()
+    if cls != 'StatusPoint' or not name:
+        continue
+
+    base_tag = name.lower()
+
+    for i in range(8):
+        key = f'DescriptorState{i}'
+        if key not in col:
+            continue
+        val = row[col[key]]
+        if val is None or val == '':
+            continue
+        cur.execute("""
+            INSERT INTO hc900.tag_metadata (base_tag, attribute, value)
+            VALUES (%s, %s, %s)
+            ON CONFLICT (base_tag, attribute) DO UPDATE SET value = EXCLUDED.value
+        """, (base_tag, f'state{i}', str(val)))
+        inserted += 1
+
+conn.commit()
+cur.close()
+conn.close()
+print(f"완료: {inserted}개 상태 레이블 저장")