style(格式化): 改成单引号、一行最长 160，全仓重新格式化

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/api/src/services/image.ts

@@ -6,10 +6,10 @@
  * 浏览器拿到的 content-type 才对得上。
  */
 const SIGNATURES: [extension: string, bytes: number[]][] = [
-  [".png", [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]],
-  [".jpg", [0xff, 0xd8, 0xff]],
-  [".gif", [0x47, 0x49, 0x46, 0x38]], // GIF8（GIF87a / GIF89a）
-  [".bmp", [0x42, 0x4d]], // BM
+  ['.png', [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]],
+  ['.jpg', [0xff, 0xd8, 0xff]],
+  ['.gif', [0x47, 0x49, 0x46, 0x38]], // GIF8（GIF87a / GIF89a）
+  ['.bmp', [0x42, 0x4d]], // BM
 ]
 
 export async function sniffImageExtension(file: Blob) {