Feeds API

Endpoints

Route	Method	Purpose
/api/v1/feeds/	GET	List feeds
/api/v1/feeds/	POST	Create feed
/api/v1/feeds/{id}/data	POST	Add sensor data to feed

Data Models

Feed (Data Stream)

Feed:
  - id (UUID)
  - key, name, description
  - device_id (FK to Device)
  - group_id (FK to Group)
  - visibility (private|public|shared)
  - unit_type, unit_symbol
  - last_value (latest sensor reading)
  - status_notify, status_timeout

FeedValue (Time Series)

FeedValue:
  - id (UUID)
  - value (string, flexible storage)
  - feed_id (FK)
  - timestamp
  - metadata (JSON)