Fix error handle

fix pagination issue
change logic for change passsword and profile update

src/service/disk-storage.ts

@@ -0,0 +1,29 @@
+import { AppError } from '@/lib/errors';
+import fs, { writeFile } from 'fs/promises';
+import path from 'path';
+
+const uploadDir = './data/avatar';
+
+export async function saveFile(key: string, file: Buffer | File) {
+  if (!uploadDir) {
+    throw new Error('Upload directory not found');
+  }
+
+  const fileBuffer =
+    file instanceof File ? Buffer.from(await file.arrayBuffer()) : file;
+
+  const filePath = path.join(uploadDir, key);
+
+  try {
+    await fs.mkdir(uploadDir, { recursive: true });
+    await writeFile(filePath, fileBuffer);
+    return key;
+  } catch (error) {
+    console.error(`Error saving file: ${key}`, error);
+    throw new AppError(
+      'FILE_SAVE_ERROR',
+      `Failed to save file: ${error instanceof Error ? error.message : 'Unknown error'}`,
+      500,
+    );
+  }
+}