// FILE: internal/model/doc.go
// Package model defines weatherfeeder's canonical domain payload types.
//
// These structs are emitted as the Payload of canonical events (schemas "weather.*.vN").
// JSON tags are treated as part of the wire contract for sinks (stdout today; others later).
//
// Compatibility guidance:
//   - Prefer additive changes.
//   - Avoid renaming/removing fields without a schema version bump.
package model