## Conventions

- **Content types**: `application/json`; character set UTF-8
- **Date/time**: ISO 8601 with timezone offset or Z (e.g., `2026-04-21T13:45:00Z`)
- **Ids**: UUID v4 unless otherwise specified
- **Idempotency**: `Idempotency-Key` header for POST/PUT with retry safety
- **Localization**: `Accept-Language` header (`ka`, `en`)

## Common Headers

- `Authorization: Bearer <token>`
- `Content-Type: application/json`
- `Accept: application/json`
- `Idempotency-Key: <uuid-v4>` (optional but recommended)
- `Accept-Language: ka|en` (optional)