统一桌面壳外链失败响应

桌面壳外链打开失败返回与移动壳一致的稳定错误

桌面壳配置检查锁定外链失败错误口径

apps/desktop-shell/scripts/check-config.mjs

@@ -1886,7 +1886,7 @@ for (const snippet of [
   'normalize_external_url',
   'open_normalized_desktop_external_url(app, url)',
   'desktop_external_url_request_accepts_only_safe_system_protocols',
-  '"external url unavailable"',
+  '"external URL cannot be opened"',
   'external_url_unavailable_response_is_stable',
   'open_desktop_host_bridge_native_page',
   'native_page_unavailable_response',

apps/desktop-shell/src-tauri/src/host_bridge/navigation.rs

@@ -53,7 +53,11 @@ pub(crate) fn open_desktop_host_bridge_external_url(
 }
 
 fn external_url_unavailable_response(request: &HostBridgeRequest) -> HostBridgeResponse {
-    failed(request.id.clone(), "host_error", "external url unavailable")
+    failed(
+        request.id.clone(),
+        "host_error",
+        "external URL cannot be opened",
+    )
 }
 
 pub(crate) fn open_desktop_host_bridge_native_page(
@@ -128,7 +132,7 @@ mod tests {
         assert!(!response.ok);
         let error = response.error.expect("external url error");
         assert_eq!(error.code, "host_error");
-        assert_eq!(error.message, "external url unavailable");
+        assert_eq!(error.message, "external URL cannot be opened");
     }
 
     #[test]