feat: improve daemon resilience, streaming, and usenet downloads

- Add daemon state persistence and stale resume file cleanup
- Add TriggerPoll for WebSocket resume actions
- Improve stream server with graceful shutdown and connection tracking
- Add desktop notifications for download completion
- Add media file organization with Movies/TV Shows detection
- Improve usenet downloader with progress tracking and resume support
- Add self-update package with GitHub release verification
- Downgrade tablewriter to v0.0.5 (v1.x API breaking change)

internal/usenet/download/e2e_test.go

@@ -109,7 +109,7 @@ func TestE2EDownload(t *testing.T) {
 		fmt.Fprintln(os.Stderr)
 	}()
 
-	downloadedFiles, err := dl.DownloadNZB(ctx, nzbFile, outputDir, progressCh)
+	downloadedFiles, err := dl.DownloadNZB(ctx, nzbFile, outputDir, nil, progressCh)
 	close(progressCh)
 	if err != nil {
 		t.Fatalf("download: %v", err)