锁定桌面文件不可用响应

桌面文件导出把系统写入和线程失败转为稳定 host_error

桌面文件导入把后台读取线程失败转为稳定 host_error

桌面文件单测覆盖不可用响应 code 和 message

桌面壳配置检查反查文件不可用响应边界

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

@@ -2235,9 +2235,14 @@ const requiredRustHostSnippets = [
   '"copied_to_clipboard"',
   'file_export_cancelled_response',
   'file_import_cancelled_response',
+  'file_export_unavailable_response',
+  'file_import_unavailable_response',
   'desktop_file_cancelled_responses_are_stable',
+  'desktop_file_unavailable_responses_are_stable',
   '"file export cancelled"',
   '"file import cancelled"',
+  '"file export unavailable"',
+  '"file import unavailable"',
   'BASE64_STANDARD.decode',
   'blocking_pick_file',
   'import_text_file_payload',

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

@@ -15,6 +15,22 @@ fn file_import_cancelled_response(request: &HostBridgeRequest) -> HostBridgeResp
     failed(request.id.clone(), "cancelled", "file import cancelled")
 }
 
+fn file_export_unavailable_response(request: &HostBridgeRequest) -> HostBridgeResponse {
+    failed(
+        request.id.clone(),
+        "host_error",
+        "file export unavailable",
+    )
+}
+
+fn file_import_unavailable_response(request: &HostBridgeRequest) -> HostBridgeResponse {
+    failed(
+        request.id.clone(),
+        "host_error",
+        "file import unavailable",
+    )
+}
+
 pub(crate) async fn export_desktop_host_bridge_text_file(
     app: &tauri::AppHandle,
     request: &HostBridgeRequest,
@@ -40,8 +56,7 @@ pub(crate) async fn export_desktop_host_bridge_text_file(
         tauri::async_runtime::spawn_blocking(move || write_export_text_file(path, content)).await;
     let bytes = match export_result {
         Ok(Ok(bytes)) => bytes,
-        Ok(Err(error)) => return failed(request.id.clone(), "host_error", error),
-        Err(error) => return failed(request.id.clone(), "host_error", error.to_string()),
+        Ok(Err(_)) | Err(_) => return file_export_unavailable_response(request),
     };
 
     ok(
@@ -75,7 +90,7 @@ pub(crate) async fn import_desktop_host_bridge_text_file(
     match import_result {
         Ok(Ok(payload)) => ok(request.id.clone(), payload),
         Ok(Err(error)) => failed(request.id.clone(), "invalid_request", error),
-        Err(error) => failed(request.id.clone(), "host_error", error.to_string()),
+        Err(_) => file_import_unavailable_response(request),
     }
 }
 
@@ -103,7 +118,7 @@ pub(crate) async fn import_desktop_host_bridge_document_file(
     match import_result {
         Ok(Ok(payload)) => ok(request.id.clone(), payload),
         Ok(Err(error)) => failed(request.id.clone(), "invalid_request", error),
-        Err(error) => failed(request.id.clone(), "host_error", error.to_string()),
+        Err(_) => file_import_unavailable_response(request),
     }
 }
 
@@ -132,8 +147,7 @@ pub(crate) async fn export_desktop_host_bridge_image_file(
         tauri::async_runtime::spawn_blocking(move || write_export_bytes_file(path, bytes)).await;
     let byte_count = match export_result {
         Ok(Ok(byte_count)) => byte_count,
-        Ok(Err(error)) => return failed(request.id.clone(), "host_error", error),
-        Err(error) => return failed(request.id.clone(), "host_error", error.to_string()),
+        Ok(Err(_)) | Err(_) => return file_export_unavailable_response(request),
     };
     ok(
         request.id.clone(),
@@ -168,7 +182,7 @@ pub(crate) async fn import_desktop_host_bridge_image_file(
     match import_result {
         Ok(Ok(payload)) => ok(request.id.clone(), payload),
         Ok(Err(error)) => failed(request.id.clone(), "invalid_request", error),
-        Err(error) => failed(request.id.clone(), "host_error", error.to_string()),
+        Err(_) => file_import_unavailable_response(request),
     }
 }
 
@@ -193,7 +207,7 @@ pub(crate) async fn import_desktop_host_bridge_audio_file(
     match import_result {
         Ok(Ok(payload)) => ok(request.id.clone(), payload),
         Ok(Err(error)) => failed(request.id.clone(), "invalid_request", error),
-        Err(error) => failed(request.id.clone(), "host_error", error.to_string()),
+        Err(_) => file_import_unavailable_response(request),
     }
 }
 
@@ -222,8 +236,7 @@ pub(crate) async fn export_desktop_host_bridge_audio_file(
         tauri::async_runtime::spawn_blocking(move || write_export_bytes_file(path, bytes)).await;
     let byte_count = match export_result {
         Ok(Ok(byte_count)) => byte_count,
-        Ok(Err(error)) => return failed(request.id.clone(), "host_error", error),
-        Err(error) => return failed(request.id.clone(), "host_error", error.to_string()),
+        Ok(Err(_)) | Err(_) => return file_export_unavailable_response(request),
     };
     ok(
         request.id.clone(),
@@ -256,4 +269,21 @@ mod tests {
         assert_eq!(import_error.code, "cancelled");
         assert_eq!(import_error.message, "file import cancelled");
     }
+
+    #[test]
+    fn desktop_file_unavailable_responses_are_stable() {
+        let request = request("file.importText");
+
+        let export_error = file_export_unavailable_response(&request)
+            .error
+            .expect("export error");
+        assert_eq!(export_error.code, "host_error");
+        assert_eq!(export_error.message, "file export unavailable");
+
+        let import_error = file_import_unavailable_response(&request)
+            .error
+            .expect("import error");
+        assert_eq!(import_error.code, "host_error");
+        assert_eq!(import_error.message, "file import unavailable");
+    }
 }