fix: isolate attachment submission state

electron/api/routes/coding-attachments.ts

@@ -66,28 +66,32 @@ async function readBoundedBody(req: IncomingMessage): Promise<Uint8Array> {
   return Buffer.concat(chunks);
 }
 
-function sendAttachmentError(res: ServerResponse, error: unknown): void {
-  const status = typeof (error as { status?: unknown })?.status === 'number'
+function sendAttachmentError(
+  res: ServerResponse,
+  error: unknown,
+  operation: 'upload' | 'content',
+): void {
+  const explicitStatus = typeof (error as { status?: unknown })?.status === 'number'
     ? (error as { status: number }).status
-    : (error as NodeJS.ErrnoException)?.code === 'ENOENT'
-      ? 404
-      : 500;
+    : null;
+  const status = explicitStatus
+    ?? (operation === 'content' || (error as NodeJS.ErrnoException)?.code === 'ENOENT' ? 404 : 500);
   const message = status === 413
     ? '图片不能超过 16 MB。'
     : status === 404
       ? '图片附件不存在。'
       : status === 400
         ? '图片附件无效。'
-        : '图片附件暂时无法读取。';
+        : operation === 'upload'
+          ? '本地数据写入失败，请检查存储后重试。'
+          : '图片附件暂时无法读取。';
   sendJson(res, status, {
     success: false,
-    code: status === 413
-      ? 'CODING_ATTACHMENT_TOO_LARGE'
+    code: status === 400 || status === 413
+      ? 'CODING_ATTACHMENT_INVALID'
       : status === 404
         ? 'CODING_ATTACHMENT_NOT_FOUND'
-        : status === 400
-          ? 'CODING_ATTACHMENT_INVALID'
-          : 'CODING_ATTACHMENT_STORAGE_FAILED',
+        : 'CODING_STORAGE_WRITE_FAILED',
     error: message,
   });
 }
@@ -147,7 +151,7 @@ export async function handleCodingAttachmentRoutes(
     res.end(record.data);
     return true;
   } catch (error) {
-    sendAttachmentError(res, error);
+    sendAttachmentError(res, error, upload ? 'upload' : 'content');
     return true;
   }
 }