I have investigated the blocklist & search failure reported in this issue and created a technical remediation plan:

### Root Cause
For television grabs representing a full-season pack or multi-episode package in Sonarr, the `episodeId` property is absent (instead, it has an `episodeIds` array). This maps to a `null` value for `arrContentId` on the client download card. The `/api/dashboard/blocklist-search` route strictly requires all fields including `arrContentId` to be truthy, returning `400 Bad Request: Missing required fields` and completely blocking the queue blocklist/removal action.

### Remediation Plan
1. **Enrich Backend Match Data**: Expose `arrContentIds` (`sonarrMatch.episodeIds`) and `arrSeriesId` (`sonarrMatch.seriesId`) from `DownloadMatcher.js` to the normalized download card object.
2. **Relax API Route Validation**: Remove `arrContentId` from the mandatory request parameters check in `server/routes/dashboard.js`.
3. **Enhance Search Commands**:
   - If a single `arrContentId` is provided, trigger `EpisodeSearch` for that single ID.
   - If an `arrContentIds` array is provided, trigger `EpisodeSearch` with that list of IDs.
   - If no specific episode IDs can be resolved but `arrSeriesId` is provided, fall back to triggering a series-wide `SeriesSearch`.
4. **Update Frontend & Documentation**: Update the client payload, update the OpenAPI spec, and add integration tests covering single/multi/fallback searches.

Upon approval, I will execute this plan, merge to `main`, close this ticket referencing the resolving commit, and cut a new point release (v1.7.11).