Weather Station API with ML Support

Endpoints:
  POST   /update                - Full weather data (temp, humidity, pressure, wind)
  POST   /wind/rapid            - Rapid wind-only updates (5-second interval)
  POST   /storm/risk            - Storm detection data (probability, risk level)
  POST   /ml/inference          - ML predictions (storm prob, anomaly, wind forecast)
  GET    /data                  - Get current weather + ML data
  GET    /data/download         - Download current data as JSON file
  GET    /wind                  - Get wind-specific data
  GET    /history               - Get 24h historical data (JSON)
  GET    /history?hours=48      - Get custom hours of history (JSON)
  GET    /history/download      - Download 24h data as CSV file
  GET    /history/download?hours=48 - Download custom hours as CSV
  GET    /logs                  - View system logs (HTML)
  GET    /stats                 - View storage statistics
  POST   /cleanup               - Manual cleanup trigger

Delete History:
  DELETE /history               - Delete ALL historical data
  DELETE /history/range         - Delete time range (body: {start_time, end_time})
  GET    /history/cleanup       - Keep last 24 hours (default)
  GET    /history/cleanup?hours=48 - Keep last 48 hours

ML Data Fields:
  ml_storm_probability          - Neural network storm prediction (0-100%)
  ml_anomaly_score              - Anomaly detection score (threshold: 0.75)
  ml_wind_gust_5min             - Predicted wind gust 5 minutes ahead
  ml_wind_gust_10min            - Predicted wind gust 10 minutes ahead
  storm_probability             - Blended storm probability
  storm_risk                    - Risk level (Low/Moderate/Elevated/High/Severe)
  pressure_drop_rate            - Barometric pressure change (hPa/hour)
  wind_acceleration             - Wind speed change rate (mph/minute)

Smart Storage System:
  FULL UPDATES: 5-min normal, 30-sec events (~288/day)
  WIND RAPID: 5-sec updates (~17,280/day)
  ML INFERENCE: 10-sec updates (~8,640/day)
  STORM DETECTION: 30-sec updates (~2,880/day)
  Total: ~29,000 operations/day (under 100k limit)