Mixes are their own concept, not playlists: they live in their own
Mixes/MixItems tables, cannot be edited and never show up among the
user's playlists. Each item is either a Musify track or a YouTube Music
reference, so YouTube songs stream directly instead of being downloaded.
A daily Hangfire job seeds the mixes from the listening history: one
discovery mix, one daily mix and one per top artist.
The per-user YouTube filler query was already in the working tree and
rides along here because it shares files with this change.
Ardalis Result<T> carried incoherent success sub-statuses and a clunky
generic converter; ErrorOr models success-or-errors cleanly.
- Application: all commands/queries/handlers now return ErrorOr<T>
(non-generic Result -> ErrorOr<Success>); errors via Error.NotFound/
Conflict/Validation/Unauthorized/Failure; success via value or new Success()
- Drop ResultExtensions.As<>(): error propagation is now just return .Errors
- Rewrite HTTP mapping (ErrorOrHttpExtensions) off Error.Type; success maps
to 200 (value) or 204 (Success); Created still built in the endpoints
- Endpoints/gateway middleware: !IsSuccess -> IsError
- Swap Ardalis.Result package for ErrorOr 2.1.1 (remove unused ref from Worker)
Build: 0 warnings, 0 errors.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Move all .NET (6 projects, solution, Directory.*.props, nuget.config)
into backend/ so the monorepo root can host non-.NET projects later
- Remove throwaway test artifacts: player.html, pl.json
- Trim dead Flutter rules from .gitignore
Build from backend/Musify.slnx: 0 warnings, 0 errors.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>