fix: restore ArchiveTeam Warrior as a proper integration

The widget-only integrations refactor incorrectly removed the
ArchiveTeam Warrior integration entirely. It only needed to be
excluded from auto-seeding (by removing defaultUrl), not deleted.

This restores the integration class, reverts the widget/router/handler
to use integration middleware, and removes archiveTeamWarrior from the
widget-only-integrations migration.

packages/definitions/src/widget-integration-map.ts

@@ -38,6 +38,7 @@ export const widgetIntegrationSupport: Partial<Record<WidgetKind, readonly Integ
   uptimeKuma: ["uptimeKuma"],
   audioStats: ["navidrome", "audiobookshelf"],
   vpn: getIntegrationKindsByCategory("vpn"),
+  archiveTeamWarrior: ["archiveTeamWarrior"],
   anchorNote: ["anchor"],
 };