移动壳放宽音频选择器候选

移动端音频导入的 DocumentPicker 候选加入 audio/*

补充泛 MIME 仍按扩展名和 bytes 校验的移动壳测试

移动壳配置门禁锁定音频选择器类型和 bytes 校验

同步宿主壳方案文档和共享决策日志

apps/mobile-shell/src/host-bridge/bridge.test.ts

@@ -67,6 +67,9 @@ const WAV_BASE64 = Buffer.from('RIFF\x04\x00\x00\x00WAVE', 'binary').toString(
 const MP3_BASE64 = Buffer.from('ID3\x04\x00\x00\x00\x00\x00\x10', 'binary').toString(
   'base64',
 );
+const MP4_AUDIO_BASE64 = encodeBytes([
+  0, 0, 0, 0x18, 0x66, 0x74, 0x79, 0x70, 0x4d, 0x34, 0x41, 0x20,
+]);
 const WEBM_BASE64 = encodeBytes([0x1a, 0x45, 0xdf, 0xa3, 0x01, 0x00]);
 
 vi.mock('expo-clipboard', () => ({
@@ -1370,6 +1373,7 @@ describe('handleMobileHostBridgeMessage', () => {
       copyToCacheDirectory: true,
       multiple: false,
       type: [
+        'audio/*',
         'audio/mpeg',
         'audio/mp4',
         'audio/wav',
@@ -1379,6 +1383,52 @@ describe('handleMobileHostBridgeMessage', () => {
     });
   });
 
+  test('file.importAudio 允许系统 MIME 缺失时按扩展名和 bytes 校验导入', async () => {
+    fileBase64Data.set('file:///private/mobile/hit.m4a', MP3_BASE64);
+    vi.mocked(DocumentPicker.getDocumentAsync).mockResolvedValue({
+      canceled: false,
+      assets: [
+        {
+          uri: 'file:///private/mobile/hit.m4a',
+          name: 'hit.m4a',
+          mimeType: 'application/octet-stream',
+          size: 10,
+          lastModified: 1,
+        },
+      ],
+    });
+
+    const mismatched = await send(request('file.importAudio'));
+
+    expect(expectFailed(mismatched).error.message).toBe(
+      'audio bytes do not match MIME',
+    );
+
+    fileBase64Data.set('file:///private/mobile/hit.m4a', MP4_AUDIO_BASE64);
+    vi.mocked(DocumentPicker.getDocumentAsync).mockResolvedValue({
+      canceled: false,
+      assets: [
+        {
+          uri: 'file:///private/mobile/hit.m4a',
+          name: 'hit.m4a',
+          mimeType: 'application/octet-stream',
+          size: 12,
+          lastModified: 1,
+        },
+      ],
+    });
+
+    const imported = await send(request('file.importAudio'));
+
+    expect(expectOk(imported).result).toEqual({
+      action: 'selected',
+      fileName: 'hit.m4a',
+      base64Data: MP4_AUDIO_BASE64,
+      mimeType: 'audio/mp4',
+      bytes: 12,
+    });
+  });
+
   test('file.importAudio 取消选择并拒绝非法 MIME 与超限音频', async () => {
     vi.mocked(DocumentPicker.getDocumentAsync).mockResolvedValue({
       canceled: true,

apps/mobile-shell/src/host-bridge/files.ts

@@ -45,6 +45,14 @@ const HOST_BRIDGE_AUDIO_MIME_TYPES = new Set<HostBridgeAudioMimeType>([
   'audio/ogg',
   'audio/webm',
 ]);
+export const MOBILE_AUDIO_DOCUMENT_PICKER_TYPES = [
+  'audio/*',
+  'audio/mpeg',
+  'audio/mp4',
+  'audio/wav',
+  'audio/ogg',
+  'audio/webm',
+];
 const BASE64_ALPHABET =
   'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
 
@@ -617,13 +625,7 @@ export async function importAudioFile(): Promise<FileImportAudioResult> {
   const result = await DocumentPicker.getDocumentAsync({
     copyToCacheDirectory: true,
     multiple: false,
-    type: [
-      'audio/mpeg',
-      'audio/mp4',
-      'audio/wav',
-      'audio/ogg',
-      'audio/webm',
-    ],
+    type: MOBILE_AUDIO_DOCUMENT_PICKER_TYPES,
   });
   if (result.canceled) {
     throw {