feat(s3): add S3 move (object & prefix) support: server handlers, API client methods, UI dialogs/picker, drag-and-drop and validation

ts_web/services/api.service.ts

@@ -168,6 +168,28 @@ export class ApiService {
     return result.success;
   }
 
+  async moveObject(
+    bucketName: string,
+    sourceKey: string,
+    destKey: string
+  ): Promise<{ success: boolean; error?: string }> {
+    return this.request<
+      { bucketName: string; sourceKey: string; destKey: string },
+      { success: boolean; error?: string }
+    >('moveObject', { bucketName, sourceKey, destKey });
+  }
+
+  async movePrefix(
+    bucketName: string,
+    sourcePrefix: string,
+    destPrefix: string
+  ): Promise<{ success: boolean; movedCount: number; error?: string }> {
+    return this.request<
+      { bucketName: string; sourcePrefix: string; destPrefix: string },
+      { success: boolean; movedCount: number; error?: string }
+    >('movePrefix', { bucketName, sourcePrefix, destPrefix });
+  }
+
   // ===========================================
   // MongoDB API Methods
   // ===========================================