ems-core v1.0.0: Standard EMS platform core

Shared backend + frontend for multi-customer EMS deployments.
- 12 enterprise modules: quota, cost, charging, maintenance, analysis, etc.
- 120+ API endpoints, 37 database tables
- Customer config mechanism (CUSTOMER env var + YAML config)
- Collectors: Modbus TCP, MQTT, HTTP API, Sungrow iSolarCloud
- Frontend: React 19 + Ant Design + ECharts + Three.js
- Infrastructure: Redis cache, rate limiting, aggregation engine

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

scripts/init_db.py

@@ -0,0 +1,18 @@
+"""数据库初始化 - 创建所有表"""
+import asyncio
+import sys
+sys.path.insert(0, "../backend")
+
+from app.core.database import engine, Base
+from app.models import *  # noqa: F401, F403
+
+
+async def init():
+    async with engine.begin() as conn:
+        await conn.run_sync(Base.metadata.create_all)
+    print("All tables created successfully!")
+    await engine.dispose()
+
+
+if __name__ == "__main__":
+    asyncio.run(init())