List Signals alert episodes

Method	Path
`GET`	`/v1/signals/alerts`

Shared authentication, project scope, and response conventions.

Episode routes require signals_alerts:read to view. Ovok filters out episodes whose Patient is outside the caller’s readable scope. A non-null nextCursor means more results may remain even when filtering makes a page short.

Lists the project's episodes, newest first. Ovok asks Signals for results and removes episodes whose Patient is outside the caller's readable scope. Because filtering can make a page short, a non-null nextCursor means there may still be more results even when fewer than limit items were returned.

Query parameter	Accepted values and meaning
`status`	`OPEN` or `CLOSED`, as reported by Signals.
`since`	ISO 8601 date-time with an offset.
`acknowledged`	`true` or `false`.
`codes`	Comma-separated LOINC codes.
`limit`	Integer 1–50; defaults to 50.
`cursor`	Opaque cursor previously returned by this route for this same project.

The result is { items, nextCursor }. Each item has id, patientId, signalsPatientId, code, and status, plus Signals episode fields. noteCount is the count of notes on the episode, including notes attached to its raw alerts; it can be null if the count could not be read.

curl --get 'https://api.sandbox.ovok.com/v1/signals/alerts' \
  --header "Authorization: Bearer ${OVOK_TOKEN}" \
  --data-urlencode 'status=OPEN' \
  --data-urlencode 'acknowledged=false' \
  --data-urlencode 'limit=20'

Status	Meaning
`403`	Missing `signals_alerts:read`.
`409 signals_episodes_disabled`	Project setting `episodicAlerts` is off. Use the raw-alert routes if those results are needed.
`422`	Invalid query, unknown parameter, cursor from another project/list, or Signals rejected the filter.
`503 signals_unavailable`	Signals could not be reached or returned an unusable response.