fix: catch up with the server's metadata redesign and scheduled actions

[revam]

Summary

Brings the Web UI in line with the current server daily, after the server's metadata redesign and the move of recurring work to scheduled actions. Each commit fixes one area; several of the bugs predate the redesign. The series linking page now works with any metadata source, not just TMDB.

Requires server 6.0.0-dev.495 or later (the minimum server version is raised to it): the ordering choice uses the generic POST /api/v3/Metadata/{source}/Series/{id}/Orderings/SetPreferred route, and the site URLs, source icons and wider episode search below are new in that daily too.

Changes

Settings

• Update frequencies and import on start removed. The AniDB calendar, anime, file, notification and MyList frequencies, and the plugin auto-update frequency, became scheduled actions on the server (/api/v3/Action/Scheduled). The selects showed nothing, and changing one made the settings patch fail. Import on start became start-up triggers on the import's scheduled actions, so its toggle is gone too.
• Metadata settings for every source. The TMDB tab is now Metadata (/settings/metadata): every source and provider with its status, a switch per kind or a provider order (active and standby) when several providers answer one, auto-linking, each provider's own settings inline, per-source image options, and link export/import for any source through /api/v3/Metadata/{source}/CrossReferences/Export and …/Import. The page no longer reads the core TMDB settings.
• Scheduled actions. A new Scheduled Actions page lists every scheduled action by category with its state, progress, last and next runs, runs or cancels it, and edits, saves or resets its triggers within the server's minimum intervals (/api/v3/Action/Scheduled). The trigger editor offers every server trigger type, the queue-cleared one included, and keeps a type it doesn't know as it is.
• Secret fields stay hidden. Configuration forms render password fields masked, keep a stored secret unless it is replaced or cleared, and never show the server's masked placeholder.

TMDB linking

• Each auto-search candidate listed once. The server's preview now returns a candidate once per origin, so the same show or movie could show up twice. Each entry is listed once, with a badge for every origin that found it (search, current link, prequel link, AniDB resource, cross-source link).
• Rejected suggestions. A candidate the automatic search wouldn't link shows why (the server's Rejection) as a warning badge, with the details in a tooltip; it can still be picked by hand.
• Match ratings. DateAndNumberMatches and DateOffsetMatches showed a blank badge and were left out of the counts.
• UnsetAll. The episode mapping body sent ResetAll, which the server never read.

Linking any metadata source

The series linking page (/collection/series/{id}/metadata-linking) takes a source query parameter. It replaces the tmdb-linking route, which is gone.

• Source picker. Opened without a source, the page lists the sources that can be linked now, from GET /api/v3/Metadata/Source: each with its icon, its name and a short hint (series and movies, movies only, already linked, paused, not configured). Nothing is selected at first. Picking one replaces the history entry with ?source=…, so going back returns to the series. With only one source to link, the page goes straight to it. Once on a source there is no switcher; editing a link from the series page names its source, type and ID and never shows the picker.

• Site URLs. Search and suggestion rows, the linked entry's header and the series page's links open the entry on its source's site through the server's SiteUrl, for every source; without one, the series page opens the entry on the linking page. The Web UI no longer builds TMDB URLs itself.

• Source icons. The picker, the search panel's and the linked entry's headers, and the series page's links show GET /api/v3/Metadata/Source/{source}/Icon (as an <img>) for a source that HasIcon, else a generic database icon. The bundled TMDB image is gone; AniDB's stays for AniDB IDs shown elsewhere.

• Generic routes for every source, TMDB included.

  • Search goes through /api/v3/Metadata/{source}/Search, and an entry is looked up by ID through …/Search/Series/{id} or …/Search/Movie/{id}.
  • The auto-search preview, with its origin and rejection badges, comes from GET /api/v3/Series/{id}/Metadata/{source}/Action/AutoSearch.
  • Series and movies are linked and unlinked through /api/v3/Series/{id}/Metadata/{source}/Series and …/Movie.
  • The existing links come from …/CrossReferences, and the linked movies from …/Movie.
  • A picked candidate is fetched through /api/v3/Metadata/{source}/{Series|Movie}/{id}/Action/Refresh.

• Series and movies. The Series and Movie toggles follow what the source supports. Movies are mapped to AniDB episodes for any source. Linking a series to a source other than TMDB links it as a whole, and the server matches its episodes.

• Orderings. The series settings dialog lists the linked series' orderings from GET /api/v3/Metadata/{source}/Series/{id}/Orderings and sets the preferred one through POST …/Orderings/SetPreferred, for every source. This replaces Tmdb/Show/{id}/Ordering.

• Episode mapping for every source. Mapping episodes by hand works for any source whose linked series has episodes, with string IDs. The links come from GET /api/v3/Series/{id}/Metadata/{source}/CrossReferences/Episode, and for a series not linked yet from …/Episode/Auto?parentID=; changes go to POST …/CrossReferences/Episode. The picker lists GET /api/v3/Metadata/{source}/Series/{id}/Episode, searched by number (5, E5, #5), season (S1, S1E5), special (Special 3, Specials) or title, and the linked episodes come from POST /api/v3/Metadata/{source}/Episode/Bulk. A linked series without episodes is still linked as a whole. This replaces the TMDB routes (Series/{id}/TMDB/Show/CrossReferences/Episode, Tmdb/Show/{id}/Episode, Tmdb/Episode/Bulk).

Series

• Links to every source. The overview's metadata sites list the series' links to every source after AniDB, TMDB first, read from the series' IDs.Linked, with GET /api/v3/Series/{id}/Metadata/{source}/CrossReferences telling series from movies and giving each entry's SiteUrl (only for sources the series is linked to). One Add link button at the bottom of the list opens the source picker, shown while any source can be linked; it replaces the add row each source had.
• Partial AniDB air dates. AirDate and EndDate can be a year or a month alone; they showed as January 1st, and a year-only end date counted as past from its first day.

Releases

• Deprecated releases. The server keeps a superseded release as IsDeprecated, apart from IsCorrupted; the link-files metadata panel shows it.
• Stray 0. The link-files page rendered {links.length && …}, which drew a 0 once no files were left to link.

SignalR

• Event names. The handlers listened for anidb:udb.stateUpdate and release:deleted; the server sends anidb:udp.stateUpdate and release:removed.
• Series refresh. The series events were handled without their payload, so the series they name never refreshed.
• Restart reasons. Admins join the restart feed and fetch GET /api/v3/Init/RestartReasons on load; the restart prompt lists each reason's plugin or setting and why, beside the configuration:requiresRestart notice, follows restart:reasonsChanged and closes once no reason is left. Other users neither join the feed nor call the route.

Filters

• Pair picker. It listed PossibleParameters before PossibleParameterPairs, so HasSourceGenre/HasSourceTag offered only the sources and sent picks without a name.
• Second parameters kept. Editing a saved filter dropped the second value of a condition the editor couldn't show.
• Two inputs when no pairs come. A condition with a second parameter but no pairs (older servers, HasCharacterWithAppearance, HasCreatorWithRole) takes two inputs: the first from PossibleParameters when sent, the second free text suggesting PossibleSecondParameters.
• Stale pairs. A saved pair the server no longer offers is flagged, kept on save, and stays pickable until the editor closes.

Theme

• Color scheme. The default theme sets color-scheme: dark, so the browser's own controls and SVG images that follow prefers-color-scheme (plugin and source icons among them) match the WebUI instead of the OS.

Left to do

Not part of this PR; the server already has the API for each:

• Quick actions. They still call the legacy /api/v3/Action/* routes (RunImport, ImportNewFiles, SearchForTmdbMatches, …), most of which now just queue the matching scheduled actions; they could start the scheduled and executable actions directly. This waits for the generated-UI work on the server to be finalized.
• Character and creator filters. HasCharacterWithAppearance and HasCreatorWithRole come without possible parameters, so they take free text; a search-backed picker would fit them better.

Testing

pnpm lint, pnpm tscheck, pnpm test and pnpm build pass.

[revam]

Split into a stack of 12 smaller PRs, to review one at a time from the bottom up. Each shows only its own layer, and the top one's tree is identical to this PR's.

1. fix(settings): drop the settings that became scheduled actions #1478 fix(settings): drop the settings that became scheduled actions
2. fix: show partial air dates and deprecated releases, drop stray 0s and mark the theme dark #1479 fix: show partial air dates and deprecated releases, drop stray 0s and mark the theme dark
3. fix(signalr): listen for the events the server sends #1480 fix(signalr): listen for the events the server sends
4. fix(configuration): never show a stored secret in a configuration form #1481 fix(configuration): never show a stored secret in a configuration form
5. fix(filters): edit conditions with two parameters #1482 fix(filters): edit conditions with two parameters
6. feat(signalr): show the server's restart reasons to admins #1483 feat(signalr): show the server's restart reasons to admins
7. feat(settings): add a scheduled actions page #1484 feat(settings): add a scheduled actions page
8. fix(tmdb): match the TMDB linking to the server #1485 fix(tmdb): match the TMDB linking to the server
9. feat(metadata): link series and map their episodes for any metadata source #1486 feat(metadata): link series and map their episodes for any metadata source
10. feat(series): list links to every metadata source #1487 feat(series): list links to every metadata source
11. refactor(metadata): add source site links and icons, pick the source on the linking page #1488 refactor(metadata): add source site links and icons, pick the source on the linking page
12. refactor(settings): replace the TMDB tab with settings for every metadata source #1489 refactor(settings): replace the TMDB tab with settings for every metadata source

Closing this one in their favour.