From dc368962f46924b786a6eb59b9e80d5f2dd2ecdc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=9B=B7=E7=94=B5=E8=8A=BD=E8=A1=A3?=
 <zhangyanghaha0407@outlook.com>
Date: Thu, 16 Apr 2026 23:05:00 -0400
Subject: [PATCH] feat(desktop): preserve error.code via DesktopError class in
 unwrap (P3-52)

Callers can now catch DesktopError and inspect err.code to distinguish
auth/validation/unknown failures; plain Error fallback kept for message.
---
 src/renderer/lib/desktop.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/renderer/lib/desktop.ts b/src/renderer/lib/desktop.ts
index c75a8817..386c2360 100644
--- a/src/renderer/lib/desktop.ts
+++ b/src/renderer/lib/desktop.ts
@@ -1,8 +1,15 @@
 import type { DesktopResult } from "@shared/contracts";
 
+export class DesktopError extends Error {
+  constructor(public readonly code: string, message: string) {
+    super(message);
+    this.name = "DesktopError";
+  }
+}
+
 export function unwrap<T>(result: DesktopResult<T>): T {
   if (!result.ok) {
-    throw new Error(result.error.message);
+    throw new DesktopError(result.error.code, result.error.message);
   }
   return result.data;
 }