补齐桌面壳命令入口单测

桌面壳 host_bridge_request 入口抽出请求准备阶段

桌面壳单测覆盖非法请求进入 replay 前被拒绝

桌面壳配置门禁和宿主壳文档同步命令入口边界

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

@@ -2307,6 +2307,8 @@ const requiredRustHostSnippets = [
   'HostBridgeReplayReservation',
   'HOST_BRIDGE_RESPONSE_CACHE_MAX',
   '.manage(HostBridgeReplayState::default())',
+  'fn prepare_host_bridge_request(',
+  'prepare_host_bridge_request(&mut request)',
   'replay_state.reserve(&request.id)',
   'HostBridgeReplayState::wait_for_response',
   'execute_host_bridge_request(app, request).await',
@@ -2318,6 +2320,21 @@ assertSameList(
   ['host_bridge_request'],
   'shared Tauri HostBridge command',
 );
+
+for (const snippet of [
+  'fn host_bridge_request_rejects_invalid_requests_before_replay()',
+  'let replay_state = HostBridgeReplayState::default();',
+  'prepare_host_bridge_request(&mut invalid).expect("invalid envelope")',
+  'assert_eq!(response.id, "request-1");',
+  'assert_eq!(response.error.expect("error").code, "invalid_request");',
+  'match replay_state.reserve("request-1")',
+  'invalid request must not reserve replay slot',
+]) {
+  if (!rustHostSource.includes(snippet)) {
+    throw new Error(`desktop shell host_bridge command facade test missing ${snippet}`);
+  }
+}
+
 assertSameList(
   readDirectoryEntryList(rustSourceDir, 'desktop shell Rust root entries'),
   expectedRustRootEntries,