Live E2E found PUT/DELETE on a missing filler preset or watermark returned 422
instead of 404. Root cause: the must-exist checks fed a NotFoundError through
LanguageExt Validation, whose aggregation to Either flattens the BaseError
subtype, so ApiResults.ToErrorResult never saw a NotFoundError. The precedent
handlers (DeleteProgramSchedule, DeleteFFmpegProfile, UpdateProgramSchedule)
avoid this by resolving must-exist as an Option and returning the NotFoundError
directly as an Either Left via Option.Match — restructured the four
filler/watermark Update/Delete handlers to that pattern (remaining name
validation still 422s). No Blazor behavior change (it only reads error.Value).
Verified live: PUT/DELETE missing → 404, GET missing → 404, empty-name POST →
422; happy-path CRUD unchanged.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* Use chapters in duration filler
* add new option, migrations, and update filler preset editor
* Revert "Use chapters in duration filler"
This reverts commit d87a8a240a78c1cbca7b311125f8d3a84645d296.
* scaffold splitting filler by chapter
* implement chapters as filler
* update changelog
* re-add migrations
* Add duration for ChapterMediaItem
---------
Co-authored-by: Jason Dove <1695733+jasongdove@users.noreply.github.com>
timothyandClaude Fable 5