feat(jellyfin): move auth to env and stored session

src/config/definitions.ts

@@ -220,8 +220,6 @@ export const DEFAULT_CONFIG: ResolvedConfig = {
     enabled: false,
     serverUrl: '',
     username: '',
-    accessToken: '',
-    userId: '',
     deviceId: 'subminer',
     clientName: 'SubMiner',
     clientVersion: '0.1.0',
@@ -807,8 +805,8 @@ export const CONFIG_TEMPLATE_SECTIONS: ConfigTemplateSection[] = [
     title: 'Jellyfin',
     description: [
       'Optional Jellyfin integration for auth, browsing, and playback launch.',
-      'Access token is stored in local encrypted token storage after login/setup.',
-      'jellyfin.accessToken remains an optional explicit override in config.',
+      'Auth session (access token + user id) is stored in local encrypted storage after login/setup.',
+      'Optional env overrides: SUBMINER_JELLYFIN_ACCESS_TOKEN and SUBMINER_JELLYFIN_USER_ID.',
     ],
     key: 'jellyfin',
   },