fix(jellyfinlogin): use externalHostname if set for forgetpassword link

Implemented dynamic URL generation for the 'Forgot Password' feature. If jellyfin external hostname
is set, the URL is generated based on it; otherwise, jellyfin hostname is used as the base URL. The
URL includes additional parameters to handle emby support.

fix #199, fix #424, re #212

server/interfaces/api/settingsInterfaces.ts

@@ -22,6 +22,7 @@ export interface SettingsAboutResponse {
 
 export interface PublicSettingsResponse {
   jellyfinHost?: string;
+  jellyfinExternalHost?: string;
   jellyfinServerName?: string;
   initialized: boolean;
   applicationTitle: string;

server/lib/settings.ts

@@ -130,6 +130,7 @@ interface FullPublicSettings extends PublicSettings {
   originalLanguage: string;
   mediaServerType: number;
   jellyfinHost?: string;
+  jellyfinExternalHost?: string;
   jellyfinServerName?: string;
   partialRequestsEnabled: boolean;
   cacheImages: boolean;
@@ -543,6 +544,7 @@ class Settings {
       originalLanguage: this.data.main.originalLanguage,
       mediaServerType: this.main.mediaServerType,
       jellyfinHost: this.jellyfin.hostname,
+      jellyfinExternalHost: this.jellyfin.externalHostname,
       partialRequestsEnabled: this.data.main.partialRequestsEnabled,
       cacheImages: this.data.main.cacheImages,
       vapidPublic: this.vapidPublic,