feat: Implement database-level sorting for moderation queue

src/types/moderation.ts

@@ -99,7 +99,25 @@ export type StatusFilter = 'all' | 'pending' | 'partially_approved' | 'flagged'
  */
 export type QueueTab = 'mainQueue' | 'archive';
 
-// Removed - sorting functionality deleted
+/**
+ * Available fields for sorting the moderation queue
+ */
+export type SortField = 'created_at' | 'submission_type' | 'status';
+
+/**
+ * Sort direction
+ */
+export type SortDirection = 'asc' | 'desc';
+
+/**
+ * Configuration for sorting the moderation queue
+ */
+export interface SortConfig {
+  /** Field to sort by */
+  field: SortField;
+  /** Sort direction */
+  direction: SortDirection;
+}
 
 /**
  * Loading states for the moderation queue