feat(downloads): download completed Xtream catch-up programmes as TS (#1572)

* feat(epg): copy catch-up programme URLs without changing playback

* feat(downloads): save completed Xtream archive programmes as TS

* fix(epg): let newer archive copy requests supersede pending work

* fix(downloads): protect archive partials and independent submissions

* fix(downloads): verify archive identity through finalization

* fix(downloads): bound archive storage and capture cleanup entries

* fix(downloads): preserve archive ownership across failure paths

* fix(downloads): recover explicitly verified archive completions

* fix(downloads): journal archive promotion before publishing files

* fix(downloads): reset archive proof before an explicit restart

* fix(downloads): preserve archive recovery ownership and interruption

* fix(downloads): verify durable archive identity at resume open

* fix(downloads): fence archive commands during completion commit

* fix(downloads): persist archive ownership throughout its lifecycle

* fix(downloads): protect archive removal and missing-file recovery

* fix(downloads): journal private cleanup captures for recovery

* fix(downloads): journal active archive cleanup before removal

* fix(downloads): clean settled archives before deleting stale rows

* fix(downloads): preserve archive ownership on removal and resubmission

* fix(downloads): recover proven archive completions before retry

* fix(downloads): recover local archives before remote transfer checks

* test(downloads): resolve archive fixture from workspace root

* fix(downloads): distinguish reused archive inodes by creation time

* fix(downloads): bind fresh archive reservations to owned files

* fix(downloads): clean reservations when ownership writes fail

* fix(downloads): commit archive reservation and ownership atomically

* fix(downloads): retain captures until replacement restoration succeeds

* fix(downloads): require durable ownership before cleanup relocation

* fix(downloads): preserve 64-bit archive file identities on Windows

* refactor(release): keep capture fixture constants in their shared module

* fix(downloads): preserve the last link of captured foreign files

* fix(downloads): expose retained archive recovery files

* fix(downloads): keep recovery instructions open while copying

libs/services/src/lib/downloads.models.ts

@@ -1,4 +1,6 @@
 import type {
+    CatchupDownloadMetadata,
+    DownloadContentType,
     DownloadMetadataSnapshot,
     ElectronBridgeDownloadStatus,
     ElectronBridgeDownloadStartPayload,
@@ -16,7 +18,8 @@ export interface DownloadItem {
     id: number;
     playlistId: string;
     xtreamId: number;
-    contentType: 'vod' | 'episode';
+    contentType: DownloadContentType;
+    catchup?: CatchupDownloadMetadata | null;
     seriesXtreamId?: number;
     seasonNumber?: number;
     episodeNumber?: number;

libs/services/src/lib/downloads.service.ts

@@ -1,3 +1,4 @@
+import type { DownloadRecoveryResult } from '@iptvnator/shared/interfaces';
 import { computed, inject, Injectable, OnDestroy, signal } from '@angular/core';
 import type { DownloadMetadataSnapshot } from '@iptvnator/shared/interfaces';
 import type { ElectronBridgeDownloadStartResult } from '@iptvnator/shared/interfaces';
@@ -288,9 +289,7 @@ export class DownloadsService implements OnDestroy {
     /**
      * Remove a download from the list
      */
-    async removeDownload(
-        downloadId: number
-    ): Promise<{ success: boolean; error?: string }> {
+    async removeDownload(downloadId: number): Promise<DownloadRecoveryResult> {
         if (!this.isAvailable()) {
             return { success: false, error: 'Downloads not available' };
         }
@@ -379,7 +378,7 @@ export class DownloadsService implements OnDestroy {
     /**
      * Clear completed/failed downloads
      */
-    async clearCompleted(playlistId?: string): Promise<{ success: boolean }> {
+    async clearCompleted(playlistId?: string): Promise<DownloadRecoveryResult> {
         if (!this.isAvailable()) {
             return { success: false };
         }