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>

backend/app/models/weather.py

@@ -0,0 +1,33 @@
+from sqlalchemy import Column, Integer, String, Float, Boolean, DateTime
+from sqlalchemy.sql import func
+from app.core.database import Base
+
+
+class WeatherData(Base):
+    """气象数据缓存"""
+    __tablename__ = "weather_data"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    timestamp = Column(DateTime(timezone=True), nullable=False, index=True)
+    data_type = Column(String(20), nullable=False)  # observation, forecast
+    temperature = Column(Float)
+    humidity = Column(Float)
+    solar_radiation = Column(Float)  # W/m2
+    cloud_cover = Column(Float)  # 0-100 %
+    wind_speed = Column(Float)  # m/s
+    source = Column(String(20), default="mock")  # api, mock
+    fetched_at = Column(DateTime(timezone=True), server_default=func.now())
+
+
+class WeatherConfig(Base):
+    """气象API配置"""
+    __tablename__ = "weather_config"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    api_provider = Column(String(50), default="mock")
+    api_key = Column(String(200))
+    location_lat = Column(Float, default=39.9)
+    location_lon = Column(Float, default=116.4)
+    fetch_interval_minutes = Column(Integer, default=30)
+    is_enabled = Column(Boolean, default=True)
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())