feat(CallFeature): implement call functionality and integrate WebSocket signaling

- Updated app.json to include microphone permissions and background audio support.
- Added call-related dependencies in package.json and package-lock.json.
- Enhanced ChatScreen to initiate calls and handle call actions.
- Introduced call components in the layout for incoming call handling.
- Expanded WebSocket service to manage call signaling messages and events.
- Refactored authStore to initialize call state on user authentication.

src/screens/message/ChatScreen.tsx

@@ -35,7 +35,7 @@ import { SafeAreaView, useSafeAreaInsets } from 'react-native-safe-area-context'
 import { Text, ImageGallery, ImageGridItem } from '../../components/common';
 import { useAppColors } from '../../theme';
 import * as hrefs from '../../navigation/hrefs';
-import { messageManager } from '../../stores';
+import { messageManager, callStore } from '../../stores';
 import { useBreakpointGTE } from '../../hooks/useResponsive';
 import {
   useChatScreen,
@@ -423,6 +423,15 @@ export const ChatScreen: React.FC = () => {
         onMorePress={navigateToChatSettings}
         onGroupInfoPress={handleGroupInfoPress}
         isWideScreen={isWideScreen}
+        onCallPress={!isGroupChat ? () => {
+          const otherUserId = otherUser?.id;
+          if (otherUserId && conversationId) {
+            callStore.getState().startCall(conversationId, otherUserId, {
+              nickname: otherUser?.nickname,
+              avatar: otherUser?.avatar,
+            });
+          }
+        } : undefined}
       />
 
       {/* 消息列表 */}