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/integration.ts

@@ -425,6 +425,13 @@ export const integrationDefs = {
     category: ["vpn"],
     documentationUrl: createDocumentationLink("/docs/integrations/gluetun"),
   },
+  archiveTeamWarrior: {
+    name: "ArchiveTeam Warrior",
+    secretKinds: [[], ["username", "password"]],
+    iconUrl: "https://cdn.jsdelivr.net/gh/selfhst/icons/png/archiveteam-warrior.png",
+    category: ["archiving"],
+    documentationUrl: null,
+  },
   // This integration only returns mock data, it is used during development (but can also be used in production by directly going to the create page)
   mock: {
     name: "Mock",
@@ -532,6 +539,7 @@ export const integrationCategories = [
   "speedtest",
   "analytics",
   "vpn",
+  "archiving",
   "ups",
   "documents",
   "mediaLibrary",