feat: restore keyboard animation for footer controls

Added useReanimatedKeyboardAnimation to GlobalFooter to animate the entire
footer (status bar + controls) up when keyboard opens. Uses translateY
transform to shift footer above keyboard with smooth native timing.

Applied to all footer variants:
- Agent screen with registered controls
- Realtime mode on non-agent screens
- Button mode on non-agent screens

Maintains all recent fixes (portal architecture, tight spacing, smooth
transitions) while restoring the keyboard avoidance behavior.

Implementation by Codex.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

packages/app/src/components/global-footer.tsx

@@ -15,6 +15,7 @@ import Animated, {
   withTiming,
   useSharedValue,
 } from "react-native-reanimated";
+import { useReanimatedKeyboardAnimation } from "react-native-keyboard-controller";
 
 export function GlobalFooter() {
   const { theme } = useUnistyles();
@@ -31,6 +32,8 @@ export function GlobalFooter() {
   const showAgentControls = isAgentScreen && hasRegisteredControls;
 
   const transition = useSharedValue(isRealtimeMode ? 1 : 0);
+  const { height: keyboardHeight } = useReanimatedKeyboardAnimation();
+  const bottomInset = insets.bottom;
 
   useEffect(() => {
     if (showAgentControls) {
@@ -38,6 +41,18 @@ export function GlobalFooter() {
     }
   }, [isRealtimeMode, showAgentControls]);
 
+  const keyboardAnimatedStyle = useAnimatedStyle(
+    () => {
+      "worklet";
+      const absoluteHeight = Math.abs(keyboardHeight.value);
+      const shift = Math.max(0, absoluteHeight - bottomInset);
+      return {
+        transform: [{ translateY: -shift }],
+      };
+    },
+    [bottomInset],
+  );
+
   const realtimeAnimatedStyle = useAnimatedStyle(() => {
     return {
       opacity: transition.value,
@@ -54,13 +69,14 @@ export function GlobalFooter() {
 
   if (showAgentControls) {
     return (
-      <View
+      <Animated.View
         style={[
           styles.container,
           {
             paddingBottom: insets.bottom,
             height: FOOTER_HEIGHT + insets.bottom,
           },
+          keyboardAnimatedStyle,
         ]}
       >
         <View style={styles.content}>
@@ -75,7 +91,7 @@ export function GlobalFooter() {
             <RealtimeControls />
           </Animated.View>
         </View>
-      </View>
+      </Animated.View>
     );
   }
 
@@ -93,6 +109,7 @@ export function GlobalFooter() {
             paddingBottom: insets.bottom,
             height: FOOTER_HEIGHT + insets.bottom,
           },
+          keyboardAnimatedStyle,
         ]}
         entering={FadeIn.duration(400)}
         exiting={FadeOut.duration(250)}
@@ -113,6 +130,7 @@ export function GlobalFooter() {
           paddingBottom: insets.bottom,
           height: FOOTER_HEIGHT + insets.bottom,
         },
+        keyboardAnimatedStyle,
       ]}
     >
       <View style={styles.centeredButtonContainer}>