refactor(ui): improve footer controls layout and add scroll-to-bottom button

Simplify agent screen layout by removing redundant status bar container and consolidating all footer controls into the input area component. Add smooth fade animations for realtime mode transitions and a floating scroll-to-bottom button for better UX.

Changes:
- Consolidate status bar and controls into AgentInputArea for cleaner layout hierarchy
- Add scroll-to-bottom button to AgentStreamView with fade animations
- Fix realtime controls stacking on non-agent screens
- Add lastActivityAt serialization to MCP server agent responses
- Remove unnecessary layout wrapper in agent screen

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

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

packages/app/src/app/agent/[id].tsx

@@ -8,7 +8,6 @@ import { StyleSheet, useUnistyles } from "react-native-unistyles";
 import { BackHeader } from "@/components/headers/back-header";
 import { AgentStreamView } from "@/components/agent-stream-view";
 import { AgentInputArea } from "@/components/agent-input-area";
-import { AgentStatusBar } from "@/components/agent-status-bar";
 import { useSession } from "@/contexts/session-context";
 import { useFooterControls } from "@/contexts/footer-controls-context";
 
@@ -89,7 +88,6 @@ export default function AgentScreen() {
             <Text style={styles.loadingText}>Loading agent...</Text>
           </View>
         ) : (
-          <>
           <AgentStreamView
             agentId={id!}
             agent={agent}
@@ -99,12 +97,6 @@ export default function AgentScreen() {
               respondToPermission(requestId, id!, agent.sessionId || "", [optionId])
             }
           />
-
-            {/* Footer area - status bar pinned within screen */}
-            <View style={styles.footerContainer}>
-              <AgentStatusBar agentId={id!} />
-            </View>
-          </>
         )}
       </ReanimatedAnimated.View>
     </View>
@@ -119,9 +111,6 @@ const styles = StyleSheet.create((theme) => ({
   content: {
     flex: 1,
   },
-  footerContainer: {
-    backgroundColor: theme.colors.background,
-  },
   loadingContainer: {
     flex: 1,
     alignItems: "center",

packages/app/src/components/agent-input-area.tsx

@@ -15,6 +15,8 @@ import Animated, {
   useSharedValue,
   useAnimatedStyle,
   withTiming,
+  FadeIn,
+  FadeOut,
 } from "react-native-reanimated";
 import { useSession } from "@/contexts/session-context";
 import { useRealtime } from "@/contexts/realtime-context";
@@ -22,6 +24,8 @@ import { useAudioRecorder } from "@/hooks/use-audio-recorder";
 import { FOOTER_HEIGHT } from "@/contexts/footer-controls-context";
 import { VoiceNoteRecordingOverlay } from "./voice-note-recording-overlay";
 import { generateMessageId } from "@/types/stream";
+import { AgentStatusBar } from "./agent-status-bar";
+import { RealtimeControls } from "./realtime-controls";
 
 interface AgentInputAreaProps {
   agentId: string;
@@ -34,7 +38,7 @@ const BASE_VERTICAL_PADDING = (FOOTER_HEIGHT - MIN_INPUT_HEIGHT) / 2;
 export function AgentInputArea({ agentId }: AgentInputAreaProps) {
   const { theme } = useUnistyles();
   const { ws, sendAgentMessage, sendAgentAudio } = useSession();
-  const { startRealtime } = useRealtime();
+  const { startRealtime, isRealtimeMode } = useRealtime();
   
   const [userInput, setUserInput] = useState("");
   const [inputHeight, setInputHeight] = useState(MIN_INPUT_HEIGHT);
@@ -257,6 +261,27 @@ export function AgentInputArea({ agentId }: AgentInputAreaProps) {
 
   return (
     <View style={styles.container}>
+      {/* Status bar */}
+      <View style={styles.statusBarContainer}>
+        <AgentStatusBar agentId={agentId} />
+      </View>
+
+      {/* Border separator */}
+      <View style={styles.borderSeparator} />
+
+      {/* Realtime controls - only when active */}
+      {isRealtimeMode && (
+        <Animated.View
+          style={styles.realtimeControlsContainer}
+          entering={FadeIn.duration(250)}
+          exiting={FadeOut.duration(250)}
+        >
+          <RealtimeControls />
+        </Animated.View>
+      )}
+
+      {/* Input area */}
+      <View style={styles.inputAreaContainer}>
         {/* Regular input controls */}
         <Animated.View style={[styles.inputContainer, inputAnimatedStyle]}>
           {/* Image preview pills */}
@@ -319,8 +344,8 @@ export function AgentInputArea({ agentId }: AgentInputAreaProps) {
                   >
                     <ArrowUp size={20} color="white" />
                   </Pressable>
-              ) : (
+                ) : !isRealtimeMode ? (
-                // Voice and Realtime buttons when no text
+                  // Voice and Realtime buttons when no text and not in realtime mode
                   <>
                     {/* Voice recording button */}
                     <Pressable
@@ -351,7 +376,7 @@ export function AgentInputArea({ agentId }: AgentInputAreaProps) {
                       <AudioLines size={20} color={theme.colors.background} />
                     </Pressable>
                   </>
-              )}
+                ) : null}
             </View>
           </View>
         </Animated.View>
@@ -367,11 +392,25 @@ export function AgentInputArea({ agentId }: AgentInputAreaProps) {
           />
         </Animated.View>
       </View>
+    </View>
   );
 }
 
 const styles = StyleSheet.create((theme) => ({
   container: {
+    flexDirection: "column",
+  },
+  statusBarContainer: {
+    backgroundColor: theme.colors.background,
+  },
+  borderSeparator: {
+    height: theme.borderWidth[1],
+    backgroundColor: theme.colors.border,
+  },
+  realtimeControlsContainer: {
+    height: FOOTER_HEIGHT,
+  },
+  inputAreaContainer: {
     position: "relative",
     minHeight: FOOTER_HEIGHT,
   },

packages/app/src/components/agent-stream-view.tsx

@@ -3,6 +3,8 @@ import { View, Text, ScrollView, Pressable } from "react-native";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
 import { BottomSheetModal } from "@gorhom/bottom-sheet";
+import Animated, { FadeIn, FadeOut } from "react-native-reanimated";
+import { ChevronDown } from "lucide-react-native";
 import {
   AssistantMessage,
   UserMessage,
@@ -64,9 +66,21 @@ export function AgentStreamView({
       contentSize.height - contentOffset.y - layoutMeasurement.height;
     // Consider user "at bottom" if within 10px of the end
     const nearBottom = distanceFromBottom < 10;
+    console.log('[AgentStreamView] Scroll:', { 
+      contentHeight: contentSize.height, 
+      scrollY: contentOffset.y, 
+      layoutHeight: layoutMeasurement.height,
+      distanceFromBottom, 
+      nearBottom,
+      currentIsNearBottom: isNearBottom
+    });
     setIsNearBottom(nearBottom);
   }
 
+  function scrollToBottom() {
+    scrollViewRef.current?.scrollToEnd({ animated: true });
+  }
+
   return (
     <View style={stylesheet.container}>
       {/* Content list */}
@@ -189,6 +203,22 @@ export function AgentStreamView({
           ))}
       </ScrollView>
 
+      {/* Scroll to bottom button */}
+      {!isNearBottom && (
+        <Animated.View
+          style={stylesheet.scrollToBottomContainer}
+          entering={FadeIn.duration(200)}
+          exiting={FadeOut.duration(200)}
+        >
+          <Pressable
+            style={stylesheet.scrollToBottomButton}
+            onPress={scrollToBottom}
+          >
+            <ChevronDown size={24} color={stylesheet.scrollToBottomIcon.color} />
+          </Pressable>
+        </Animated.View>
+      )}
+
       <ToolCallBottomSheet
         bottomSheetRef={bottomSheetRef}
         selectedToolCall={selectedToolCall}
@@ -365,6 +395,33 @@ const stylesheet = StyleSheet.create((theme) => ({
     fontSize: theme.fontSize.sm,
     textAlign: "center",
   },
+  scrollToBottomContainer: {
+    position: "absolute",
+    bottom: 16,
+    left: 0,
+    right: 0,
+    alignItems: "center",
+    pointerEvents: "box-none",
+  },
+  scrollToBottomButton: {
+    width: 48,
+    height: 48,
+    borderRadius: 24,
+    backgroundColor: theme.colors.muted,
+    alignItems: "center",
+    justifyContent: "center",
+    shadowColor: "#000",
+    shadowOffset: {
+      width: 0,
+      height: 2,
+    },
+    shadowOpacity: 0.25,
+    shadowRadius: 3.84,
+    elevation: 5,
+  },
+  scrollToBottomIcon: {
+    color: theme.colors.foreground,
+  },
 }));
 
 const permissionStyles = StyleSheet.create((theme) => ({

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

@@ -1,4 +1,4 @@
-import { useEffect, useState } from "react";
+import { useState } from "react";
 import { View, Pressable, Text } from "react-native";
 import { usePathname, useRouter } from "expo-router";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
@@ -13,8 +13,6 @@ import Animated, {
   FadeIn,
   FadeOut,
   useAnimatedStyle,
-  withTiming,
-  useSharedValue,
 } from "react-native-reanimated";
 import { useReanimatedKeyboardAnimation } from "react-native-keyboard-controller";
 
@@ -31,21 +29,12 @@ export function GlobalFooter() {
   // Determine current screen type
   const isAgentScreen = pathname?.startsWith("/agent/");
 
-  const agentControlsHeight = useSharedValue(FOOTER_HEIGHT);
-
   const hasRegisteredControls = !!controls;
   const showAgentControls = isAgentScreen && hasRegisteredControls;
 
-  const transition = useSharedValue(isRealtimeMode ? 1 : 0);
   const { height: keyboardHeight } = useReanimatedKeyboardAnimation();
   const bottomInset = insets.bottom;
 
-  useEffect(() => {
-    if (showAgentControls) {
-      transition.value = withTiming(isRealtimeMode ? 1 : 0, { duration: 250 });
-    }
-  }, [isRealtimeMode, showAgentControls]);
-
   const keyboardAnimatedStyle = useAnimatedStyle(
     () => {
       "worklet";
@@ -58,33 +47,6 @@ export function GlobalFooter() {
     [bottomInset],
   );
 
-  const containerAnimatedStyle = useAnimatedStyle(
-    () => {
-      "worklet";
-      const agentHeight = Math.max(agentControlsHeight.value, FOOTER_HEIGHT);
-      const expandedHeight = agentHeight - (agentHeight - FOOTER_HEIGHT) * transition.value;
-
-      return {
-        height: expandedHeight + bottomInset,
-      };
-    },
-    [bottomInset],
-  );
-
-  const realtimeAnimatedStyle = useAnimatedStyle(() => {
-    return {
-      opacity: transition.value,
-      pointerEvents: transition.value > 0.5 ? ("auto" as const) : ("none" as const),
-    };
-  });
-
-  const agentControlsAnimatedStyle = useAnimatedStyle(() => {
-    return {
-      opacity: 1 - transition.value,
-      pointerEvents: transition.value < 0.5 ? ("auto" as const) : ("none" as const),
-    };
-  });
-
   if (showAgentControls) {
     return (
       <Animated.View
@@ -93,26 +55,11 @@ export function GlobalFooter() {
           {
             paddingBottom: insets.bottom,
           },
-          containerAnimatedStyle,
           keyboardAnimatedStyle,
         ]}
-      >
-        <View style={styles.content}>
-          <Animated.View
-            onLayout={(event) => {
-              agentControlsHeight.value = Math.max(event.nativeEvent.layout.height, FOOTER_HEIGHT);
-            }}
-            style={[styles.absoluteBottomFill, agentControlsAnimatedStyle]}
       >
         {controls}
       </Animated.View>
-          <Animated.View
-            style={[styles.absoluteBottomFill, realtimeAnimatedStyle]}
-          >
-            <RealtimeControls />
-          </Animated.View>
-        </View>
-      </Animated.View>
     );
   }
 
@@ -120,41 +67,36 @@ export function GlobalFooter() {
     return null;
   }
 
-  // Determine if realtime is active on non-agent screens
+  // For home and orchestrator screens, show three buttons with realtime stacked on top
-  if (isRealtimeMode) {
+  const nonAgentFooterHeight = isRealtimeMode
+    ? FOOTER_HEIGHT * 2 + insets.bottom
+    : FOOTER_HEIGHT + insets.bottom;
+
   return (
+    <>
       <Animated.View
         style={[
           styles.container,
           {
             paddingBottom: insets.bottom,
-            height: FOOTER_HEIGHT + insets.bottom,
+            height: nonAgentFooterHeight,
           },
           keyboardAnimatedStyle,
         ]}
-        entering={FadeIn.duration(400)}
+      >
+        <View style={styles.nonAgentContent}>
+          {/* Realtime controls - only visible when active */}
+          {isRealtimeMode && (
+            <Animated.View
+              style={styles.realtimeSection}
+              entering={FadeIn.duration(250)}
               exiting={FadeOut.duration(250)}
             >
               <RealtimeControls />
             </Animated.View>
-    );
+          )}
-  }
 
-  // For home and orchestrator screens, show three buttons
+          {/* Three button menu - always visible */}
-  return (
-    <>
-      <Animated.View
-        entering={FadeIn.duration(250)}
-        exiting={FadeOut.duration(250)}
-        style={[
-          styles.container,
-          {
-            paddingBottom: insets.bottom,
-            height: FOOTER_HEIGHT + insets.bottom,
-          },
-          keyboardAnimatedStyle,
-        ]}
-      >
           <View style={styles.threeButtonContainer}>
             <Pressable
               onPress={() => router.push("/")}
@@ -191,6 +133,7 @@ export function GlobalFooter() {
               <Text style={styles.footerButtonText}>Realtime</Text>
             </Pressable>
           </View>
+        </View>
       </Animated.View>
 
       <CreateAgentModal
@@ -207,20 +150,19 @@ const styles = StyleSheet.create((theme) => ({
     borderTopWidth: theme.borderWidth[1],
     borderTopColor: theme.colors.border,
   },
-  content: {
+  nonAgentContent: {
-    flex: 1,
+    flexDirection: "column",
-    minHeight: FOOTER_HEIGHT,
   },
-  absoluteBottomFill: {
+  realtimeSection: {
-    position: "absolute",
+    height: FOOTER_HEIGHT,
-    left: 0,
+    borderBottomWidth: theme.borderWidth[1],
-    right: 0,
+    borderBottomColor: theme.colors.border,
-    bottom: 0,
   },
   threeButtonContainer: {
     flexDirection: "row",
     padding: theme.spacing[4],
     gap: theme.spacing[3],
+    height: FOOTER_HEIGHT,
   },
   footerButton: {
     flex: 1,

packages/server/agents.json

@@ -284,7 +284,7 @@
       "sessionId": "20b0b2c2-18ec-409b-b932-a20c9ca8e0d3"
     },
     "createdAt": "2025-10-26T09:45:29.563Z",
-    "lastActivityAt": "2025-10-26T12:25:20.827Z",
+    "lastActivityAt": "2025-10-26T13:11:22.795Z",
     "cwd": "/Users/moboudra/dev/voice-dev"
   },
   {
@@ -358,5 +358,29 @@
     "createdAt": "2025-10-26T12:25:48.081Z",
     "lastActivityAt": "2025-10-26T12:26:13.370Z",
     "cwd": "/Users/moboudra/dev/voice-dev-gland"
+  },
+  {
+    "id": "d1ebfcdf-039a-459e-a918-13d290e26c85",
+    "title": "Add Floating Scroll-to-Bottom Button",
+    "sessionId": "9e5654e1-a459-43e9-8f6d-757208c8f2b5",
+    "options": {
+      "type": "claude",
+      "sessionId": "9e5654e1-a459-43e9-8f6d-757208c8f2b5"
+    },
+    "createdAt": "2025-10-26T13:31:29.627Z",
+    "lastActivityAt": "2025-10-26T13:32:14.171Z",
+    "cwd": "/Users/moboudra/dev/voice-dev"
+  },
+  {
+    "id": "97423777-33d3-414a-ae79-ea303230010a",
+    "title": "Commit Local Changes",
+    "sessionId": "019a20d4-5fd4-76db-8021-697b8204597e",
+    "options": {
+      "type": "claude",
+      "sessionId": "addbd42f-dbb1-4536-bc2b-e70a64587de6"
+    },
+    "createdAt": "2025-10-26T14:02:59.844Z",
+    "lastActivityAt": "2025-10-26T14:03:22.696Z",
+    "cwd": "/Users/moboudra/dev/voice-dev"
   }
 ]

packages/server/src/server/acp/mcp-server.ts

@@ -37,6 +37,7 @@ function serializeAgentInfo(info: any): any {
   return {
     ...info,
     createdAt: info.createdAt.toISOString(),
+    lastActivityAt: info.lastActivityAt.toISOString(),
   };
 }
 
@@ -212,6 +213,7 @@ export async function createAgentMcpServer(
             id: z.string(),
             status: z.string(),
             createdAt: z.string(),
+            lastActivityAt: z.string(),
             type: z.literal("claude"),
             sessionId: z.string().nullable(),
             error: z.string().nullable(),
@@ -260,6 +262,7 @@ export async function createAgentMcpServer(
             id: z.string(),
             status: z.string(),
             createdAt: z.string(),
+            lastActivityAt: z.string(),
             type: z.literal("claude"),
             sessionId: z.string().nullable(),
             error: z.string().nullable(),