统一原生扫码超时契约

将二维码扫码超时提升到共享 HostBridge 契约

让 H5 facade 和测试复用共享扫码超时常量

增加原生壳门禁拦截扫码超时字面量回退

补充宿主壳方案文档和共享决策记录

src/services/host-bridge/hostBridge.test.ts

@@ -5,6 +5,7 @@ import { afterEach, describe, expect, test, vi } from 'vitest';
 import type { HostBridgeCapability } from '../../../packages/shared/src/contracts/hostBridge';
 import {
   HOST_BRIDGE_RUNTIME_REFRESH_TIMEOUT_MS,
+  HOST_BRIDGE_SCANNER_TIMEOUT_MS,
   HOST_BRIDGE_USER_INTERACTION_TIMEOUT_MS,
 } from '../../../packages/shared/src/contracts/hostBridge';
 import {
@@ -1209,7 +1210,7 @@ describe('hostBridge', () => {
     expect(invoke).toHaveBeenCalledWith('host_bridge_request', {
       request: expect.objectContaining({
         method: 'scanner.scanQrCode',
-        timeoutMs: 60000,
+        timeoutMs: HOST_BRIDGE_SCANNER_TIMEOUT_MS,
       }),
     });
     expect(invoke).toHaveBeenCalledWith('host_bridge_request', {

src/services/host-bridge/hostBridge.ts

@@ -31,6 +31,7 @@ import {
   HOST_BRIDGE_NATIVE_APP_QUERY,
   HOST_BRIDGE_RUNTIME_REFRESH_TIMEOUT_MS,
   HOST_BRIDGE_RUNTIME_CONTEXT_QUERY_KEY,
+  HOST_BRIDGE_SCANNER_TIMEOUT_MS,
   HOST_BRIDGE_TEXT_MIME_TYPES,
   HOST_BRIDGE_USER_INTERACTION_TIMEOUT_MS,
   HOST_BRIDGE_WECHAT_MINI_PROGRAM_SOURCE_QUERY,
@@ -931,7 +932,7 @@ export async function scanHostQrCode() {
       await requestNativeAppHostBridge<ScannerScanQrCodeResult>(
         'scanner.scanQrCode',
         undefined,
-        { timeoutMs: 60000 },
+        { timeoutMs: HOST_BRIDGE_SCANNER_TIMEOUT_MS },
       );
     return normalizeHostBridgeQrCodeValue(result?.value) ?? false;
   } catch (error) {