fix(app): separate iOS composer clipping from its shadow

Keep explicit coverage of the existing keyboard rotation guard.

Co-authored-by: Elsa Granger <zeyugao@outlook.com>

packages/app/src/composer/input/input.tsx

@@ -8,6 +8,7 @@ import {
 import { LoadingSpinner } from "@/components/ui/loading-spinner";
 import {
   View,
+  Platform,
   Text,
   useWindowDimensions,
   NativeSyntheticEvent,
@@ -1930,7 +1931,7 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
     const inputWrapperCombinedStyle = useMemo(
       () => [
         styles.inputWrapper,
-        isCompact && !isFullscreen && styles.inputWrapperCompact,
+        Platform.OS !== "ios" && isCompact && !isFullscreen && styles.inputWrapperCompact,
         readOnly && styles.inputWrapperReadOnly,
         inputWrapperStyle,
         { opacity: surfacePresentation.input.opacity },
@@ -2224,7 +2225,11 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
     return (
       <View
         ref={rootRef}
-        style={isFullscreen ? styles.fullscreenContainer : styles.container}
+        style={
+          isFullscreen
+            ? styles.fullscreenContainer
+            : [styles.container, Platform.OS === "ios" && isCompact && styles.inputWrapperCompact]
+        }
         testID="message-input-root"
         onLayout={handleComposerLayout}
       >
@@ -2269,6 +2274,7 @@ const styles = StyleSheet.create((theme: Theme) => ({
     position: "relative",
   },
   inputWrapper: {
+    ...(Platform.OS === "ios" ? { overflow: "hidden" as const } : {}),
     flexShrink: 1,
     flexDirection: "column",
     gap: theme.spacing[3],

packages/app/src/keyboard/shift/internal/policy.test.ts

@@ -53,6 +53,21 @@ describe("resolveStreamKeyboardInset", () => {
 });
 
 describe("resolveKeyboardShift", () => {
+  it.each([0, -1])(
+    "ignores a rotation report with height %s and progress one",
+    (rawKeyboardHeight) => {
+      expect(
+        resolveKeyboardShift({
+          rawKeyboardHeight,
+          keyboardProgress: 1,
+          bottomInset: 24,
+          isIos: true,
+          iosMinHeight: 120,
+        }),
+      ).toBe(0);
+    },
+  );
+
   it("keeps the existing open-keyboard offset behavior", () => {
     expect(
       resolveKeyboardShift({