feat: capture and display original upload filename for tracks

DeepDrftManager/Components/Pages/Tracks/TrackList.razor

@@ -47,6 +47,7 @@
                     <MudTh><MudTableSortLabel SortLabel="Genre" T="TrackDto">Genre</MudTableSortLabel></MudTh>
                     <MudTh><MudTableSortLabel SortLabel="ReleaseDate" T="TrackDto">Release Date</MudTableSortLabel></MudTh>
                     <MudTh>Entry Key</MudTh>
+                    <MudTh>File Name</MudTh>
                     <MudTh Style="width: 1%; white-space: nowrap;">Actions</MudTh>
                 </HeaderContent>
                 <RowTemplate>
@@ -56,6 +57,7 @@
                     <MudTd DataLabel="Genre">@(context.Genre ?? "—")</MudTd>
                     <MudTd DataLabel="Release Date">@(context.ReleaseDate?.ToString("yyyy-MM-dd") ?? "—")</MudTd>
                     <MudTd DataLabel="Entry Key"><MudText Typo="Typo.caption" Style="font-family: monospace;">@context.EntryKey</MudText></MudTd>
+                    <MudTd DataLabel="File Name"><MudText Typo="Typo.caption" Style="font-family: monospace;">@(context.OriginalFileName ?? "—")</MudText></MudTd>
                     <MudTd DataLabel="Actions">
                         <MudTooltip Text="Edit">
                             <MudIconButton Icon="@Icons.Material.Filled.Edit"

DeepDrftManager/Components/Pages/Tracks/TrackNew.razor

@@ -144,6 +144,7 @@
                 string.IsNullOrWhiteSpace(_album) ? null : _album,
                 string.IsNullOrWhiteSpace(_genre) ? null : _genre,
                 string.IsNullOrWhiteSpace(_releaseDate) ? null : _releaseDate,
+                _selectedFile.Name,
                 createdByUserId);
 
             if (result.Success)