Mark one read
POST /v1/notifications/:id/read — Mark a single notification read (idempotent). Returns `{ ok: true, updated }` — `updated` is false if it was already rea
POST /v1/notifications/:id/read
Mark a single notification read (idempotent). Returns { ok: true, updated } — updated is false if it was already read. 404 only if the id is missing.
| Method | POST |
| Path | /v1/notifications/:id/read |
| Auth | Authorization: Bearer <token> required when GATEWAY_AUTH_TOKEN is set |
| Category | notifications |