Persist file categories on the index and classify archives and unknown types during idle maintenance.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/Explorer.Domain/OrganizeDestinations.cs

@@ -48,6 +48,51 @@ public sealed class OrganizeDestinations
             _ => "Unknown"
         };
 
+    public static bool TryParse(string? value, out FileCategory category)
+    {
+        category = FileCategory.Unknown;
+        if (string.IsNullOrWhiteSpace(value))
+        {
+            return false;
+        }
+
+        var key = value.Trim().Replace(" ", "", StringComparison.Ordinal).Replace("_", "", StringComparison.Ordinal);
+        if (Enum.TryParse(key, ignoreCase: true, out category) && category != FileCategory.Unknown)
+        {
+            return true;
+        }
+
+        category = key.ToLowerInvariant() switch
+        {
+            "photo" or "photos" or "image" or "images" or "picture" or "pictures" => FileCategory.Photos,
+            "video" or "videos" or "movie" or "movies" => FileCategory.Video,
+            "audio" or "music" or "sound" => FileCategory.Audio,
+            "doc" or "docs" or "document" or "documents" => FileCategory.Documents,
+            "code" or "repo" or "repository" or "git" or "development" => FileCategory.CodeRepository,
+            "installer" or "installers" or "setup" => FileCategory.Installer,
+            "backup" or "backups" => FileCategory.Backup,
+            "archive" or "archives" or "zip" => FileCategory.Archive,
+            "system" or "systemdata" => FileCategory.SystemData,
+            "build" or "buildoutput" => FileCategory.BuildOutput,
+            "unknown" => FileCategory.Unknown,
+            _ => (FileCategory)(-1)
+        };
+        return (int)category >= 0;
+    }
+
+    public static readonly FileCategory[] UserChoices =
+    [
+        FileCategory.Photos,
+        FileCategory.Video,
+        FileCategory.Audio,
+        FileCategory.Documents,
+        FileCategory.Installer,
+        FileCategory.Archive,
+        FileCategory.Backup,
+        FileCategory.CodeRepository,
+        FileCategory.Unknown
+    ];
+
     private static string? EmptyToNull(string value)
         => string.IsNullOrWhiteSpace(value) ? null : value.Trim();
 }