fix: update EPG item description and refactor component

Ref the EPG item to directly display the category 
and description values instead of accessing the first element of 
the arrays. Update the EpgListComponent to improve the handling 
of EPG data and selected date filtering. Change references from 
Electron to Tauri in the component to reflect the 
current framework usage.

src/app/settings/settings.component.ts

@@ -22,7 +22,6 @@ import { TranslateModule, TranslateService } from '@ngx-translate/core';
 import { take } from 'rxjs';
 import * as semver from 'semver';
 import {
-    EPG_FORCE_FETCH,
     SET_MPV_PLAYER_PATH,
     SET_VLC_PLAYER_PATH,
     SETTINGS_UPDATE,
@@ -65,7 +64,7 @@ export class SettingsComponent implements OnInit {
     languageEnum = Language;
 
     /** Flag that indicates whether the app runs in electron environment */
-    isElectron = this.electronService.isElectron;
+    isTauri = this.electronService.getAppEnvironment() === 'tauri';
 
     isPwa = this.electronService.getAppEnvironment() === 'pwa';
 
@@ -91,7 +90,7 @@ export class SettingsComponent implements OnInit {
             label: 'VideoJs Player',
         },
         ...this.electronPlayers,
-        /* ...(this.isElectron ? this.electronPlayers : []), */
+        /* ...(this.isTauri ? this.electronPlayers : []), */
     ];
 
     /** Current version of the app */
@@ -109,7 +108,7 @@ export class SettingsComponent implements OnInit {
     /** Settings form object */
     settingsForm = this.formBuilder.group({
         player: [VideoPlayer.VideoJs],
-        ...(this.isElectron ? { epgUrl: new FormArray([]) } : {}),
+        ...(this.isTauri ? { epgUrl: new FormArray([]) } : {}),
         language: Language.ENGLISH,
         showCaptions: false,
         theme: Theme.LightTheme,
@@ -161,7 +160,7 @@ export class SettingsComponent implements OnInit {
                             player: settings.player
                                 ? settings.player
                                 : VideoPlayer.VideoJs,
-                            ...(this.isElectron ? { epgUrl: [] } : {}),
+                            ...(this.isTauri ? { epgUrl: [] } : {}),
                             language: settings.language ?? Language.ENGLISH,
                             showCaptions: settings.showCaptions ?? false,
                             theme: settings.theme ?? Theme.LightTheme,
@@ -175,7 +174,7 @@ export class SettingsComponent implements OnInit {
                         throw new Error(error);
                     }
 
-                    if (this.isElectron) {
+                    if (this.isTauri) {
                         this.setEpgUrls(settings.epgUrl);
                     }
                 }
@@ -280,15 +279,17 @@ export class SettingsComponent implements OnInit {
      */
     applyChangedSettings(): void {
         this.settingsForm.markAsPristine();
-        // check whether the epg url was changed or not
-        if (this.isElectron) {
+        if (this.isTauri) {
             let epgUrls = this.settingsForm.value.epgUrl;
             if (epgUrls) {
                 if (!Array.isArray(epgUrls)) {
                     epgUrls = [epgUrls];
                 }
                 epgUrls = epgUrls.filter((url) => url !== '');
-                this.epgService.fetchEpg(epgUrls);
+                if (epgUrls.length > 0) {
+                    // Fetch all EPG URLs at once
+                    this.epgService.fetchEpg(epgUrls);
+                }
             }
         }
         this.translate.use(this.settingsForm.value.language);
@@ -315,8 +316,7 @@ export class SettingsComponent implements OnInit {
      * @param url epg source url
      */
     refreshEpg(url: string): void {
-        this.electronService.sendIpcEvent(EPG_FORCE_FETCH, url);
-        this.epgService.showFetchSnackbar();
+        this.epgService.fetchEpg([url]);
     }
 
     /**