补齐移动壳文件动作单测

移动壳 files helper 增加系统文件动作直接单测

移动壳配置门禁反查文件动作测试边界

宿主壳文档和共享决策同步移动文件动作覆盖

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

@@ -38,6 +38,8 @@ const dispatchPath = new URL('../src/host-bridge/dispatch.ts', import.meta.url);
 const dispatchSource = fs.readFileSync(dispatchPath, 'utf8');
 const filesPath = new URL('../src/host-bridge/files.ts', import.meta.url);
 const filesSource = fs.readFileSync(filesPath, 'utf8');
+const filesTestPath = new URL('../src/host-bridge/files.test.ts', import.meta.url);
+const filesTestSource = fs.readFileSync(filesTestPath, 'utf8');
 const filePayloadsPath = new URL(
   '../src/host-bridge/filePayloads.ts',
   import.meta.url,
@@ -1937,6 +1939,27 @@ for (const [wrapperName, fileCall] of [
   }
 }
 
+for (const snippet of [
+  'describe(\'mobile HostBridge file actions\'',
+  'exportTextFile({',
+  'exportImageFile({',
+  'importTextFile()',
+  'importDocumentFile()',
+  'importAudioFile()',
+  'importImageFile()',
+  'captureImageFile()',
+  'exportAudioFile({',
+  "code: 'unsupported_capability'",
+  "code: 'cancelled'",
+  "message: 'camera permission denied'",
+  "mediaTypes: ['images']",
+  "options: { encoding: 'base64' }",
+]) {
+  if (!filesTestSource.includes(snippet)) {
+    throw new Error(`mobile shell file action tests missing ${snippet}`);
+  }
+}
+
 if (
   !dispatchSource.includes('exportMobileHostBridgeTextFile(request)') ||
   !dispatchSource.includes('importMobileHostBridgeTextFile(request)') ||