feat(epg): support playlist-scoped sources

Add playlist-scoped EPG source support for M3U playlists.

apps/electron-backend/src/app/api/main.preload.spec-data.ts

@@ -405,6 +405,12 @@ export const epgPreloadCases: PreloadInvokeCase[] = [
         channel: 'EPG_CLEAR_ALL',
         forwardedArgs: [],
     },
+    {
+        method: 'clearEpgDataForSource',
+        args: ['https://example.com/guide.xml'],
+        channel: 'EPG_CLEAR_SOURCE',
+        forwardedArgs: [{ sourceUrl: 'https://example.com/guide.xml' }],
+    },
     {
         method: 'checkEpgFreshness',
         args: [epgUrls, 24],

apps/electron-backend/src/app/api/main.preload.ts

@@ -7,6 +7,7 @@ import type {
     ElectronBridgeApi,
     ElectronBridgeDbOperationEvent,
     ElectronBridgeDownloadStartPayload,
+    ElectronBridgeEpgLookupOptions,
     ElectronBridgeEpgProgress,
     ElectronBridgePlaybackPositionInput,
     ElectronBridgePlaylistInput,
@@ -460,18 +461,31 @@ const electronApi: ElectronBridgeApi = {
     ) => ipcRenderer.invoke('AUTO_UPDATE', playlists, options),
     fetchEpg: (urls: string[], options?: ElectronBridgeTrustOptions) =>
         ipcRenderer.invoke('FETCH_EPG', { url: urls, options }),
-    getChannelPrograms: (channelId: string) =>
-        ipcRenderer.invoke('GET_CHANNEL_PROGRAMS', { channelId }),
-    getCurrentProgramsBatch: (channelIds: string[]) =>
-        ipcRenderer.invoke('GET_CURRENT_PROGRAMS_BATCH', { channelIds }),
-    getEpgChannelMetadata: (channelIds: string[]) =>
-        ipcRenderer.invoke('EPG_GET_CHANNEL_METADATA', { channelIds }),
+    getChannelPrograms: (
+        channelId: string,
+        options?: ElectronBridgeEpgLookupOptions
+    ) => ipcRenderer.invoke('GET_CHANNEL_PROGRAMS', { channelId, options }),
+    getCurrentProgramsBatch: (
+        channelIds: string[],
+        options?: ElectronBridgeEpgLookupOptions
+    ) =>
+        ipcRenderer.invoke('GET_CURRENT_PROGRAMS_BATCH', {
+            channelIds,
+            options,
+        }),
+    getEpgChannelMetadata: (
+        channelIds: string[],
+        options?: ElectronBridgeEpgLookupOptions
+    ) =>
+        ipcRenderer.invoke('EPG_GET_CHANNEL_METADATA', { channelIds, options }),
     getEpgChannels: () => ipcRenderer.invoke('EPG_GET_CHANNELS'),
     getEpgChannelsByRange: (skip: number, limit: number) =>
         ipcRenderer.invoke('EPG_GET_CHANNELS_BY_RANGE', { skip, limit }),
     forceFetchEpg: (url: string, options?: ElectronBridgeTrustOptions) =>
         ipcRenderer.invoke('EPG_FORCE_FETCH', { url, options }),
     clearEpgData: () => ipcRenderer.invoke('EPG_CLEAR_ALL'),
+    clearEpgDataForSource: (sourceUrl: string) =>
+        ipcRenderer.invoke('EPG_CLEAR_SOURCE', { sourceUrl }),
     checkEpgFreshness: (urls: string[], maxAgeHours?: number) =>
         ipcRenderer.invoke('EPG_CHECK_FRESHNESS', { urls, maxAgeHours }),
     searchEpgPrograms: (searchTerm: string, limit?: number) =>