fix(ui): adjust keyboard handling and prevent duplicate view recording

- Fix keyboard avoidance logic in PostDetailScreen and ChatScreen by applying manual keyboard height offsets only on Android, preventing double padding on iOS.
- Prevent multiple view recording calls in TradeDetailScreen by using a ref to track if the view has already been recorded.

src/components/business/PostMentionInput.tsx

@@ -47,6 +47,8 @@ interface PostMentionInputProps {
   minHeight?: number;
   autoExpand?: boolean;
   onPostRefPasted?: (postId: string, title: string) => void;
+  onSubmitEditing?: () => void;
+  returnKeyType?: 'default' | 'send' | 'done';
 }
 
 const PostMentionInput: React.FC<PostMentionInputProps> = ({
@@ -59,6 +61,8 @@ const PostMentionInput: React.FC<PostMentionInputProps> = ({
   minHeight = 100,
   autoExpand = false,
   onPostRefPasted,
+  onSubmitEditing,
+  returnKeyType = 'default',
 }) => {
   const colors = useAppColors();
   const currentUser = useAuthStore(s => s.currentUser);
@@ -281,6 +285,9 @@ const PostMentionInput: React.FC<PostMentionInputProps> = ({
         multiline
         textAlignVertical="top"
         scrollEnabled={!autoExpand}
+        returnKeyType={returnKeyType}
+        onSubmitEditing={onSubmitEditing}
+        blurOnSubmit={false}
         style={[
           styles.input,
           autoExpand && styles.inputAutoExpand,