chore: update styles, add splash config, and improve search functionality

- Replace deprecated StyleSheet.absoluteFillObject with StyleSheet.absoluteFill (React Native 0.76+)
- Add splash screen configuration in app.json
- Fix duplicate UIBackgroundModes and add audio mode for iOS
- Disable Android ripple effect on tab bar buttons
- Improve SmartImage loading state to prevent unnecessary re-renders
- Refactor ImageGrid to use mainUri with separate previewUrl for better preview handling
- Add market search support with trade items tab in SearchScreen
- Pass homeTab prop to SearchScreen for context-aware search behavior
- Simplify fetchUnreadCount return type to void in MessageSyncService
- Fix StatusBar import from expo to react-native in ChatScreen

src/screens/message/components/ChatScreen/styles.ts

@@ -551,7 +551,7 @@ export function createChatScreenStyles(colors: AppColors, dynamicStyles?: {
 
   // 输入框@高亮
   inputHighlightOverlay: {
-    ...StyleSheet.absoluteFillObject,
+    ...StyleSheet.absoluteFill,
     flexDirection: 'row',
     flexWrap: 'wrap',
     paddingTop: 8,
@@ -1072,7 +1072,7 @@ export function createChatScreenStyles(colors: AppColors, dynamicStyles?: {
   
   // 遮罩层
   overlay: {
-    ...StyleSheet.absoluteFillObject,
+    ...StyleSheet.absoluteFill,
     backgroundColor: 'rgba(0, 0, 0, 0.5)',
     alignItems: 'center',
     justifyContent: 'center',
@@ -1142,7 +1142,7 @@ export function createChatScreenStyles(colors: AppColors, dynamicStyles?: {
     justifyContent: 'flex-end',
   },
   manageModalBackdrop: {
-    ...StyleSheet.absoluteFillObject,
+    ...StyleSheet.absoluteFill,
     backgroundColor: 'rgba(0, 0, 0, 0.4)',
   },
   manageModalHandle: {
@@ -1165,7 +1165,7 @@ export function createChatScreenStyles(colors: AppColors, dynamicStyles?: {
     borderColor: colors.chat.replyBorder,
   },
   stickerCheckOverlay: {
-    ...StyleSheet.absoluteFillObject,
+    ...StyleSheet.absoluteFill,
     backgroundColor: 'rgba(127, 182, 230, 0.14)',
     alignItems: 'flex-end',
     justifyContent: 'flex-start',