Use replace navigation for agent switches

packages/app/src/app/agent/[serverId]/[agentId].tsx

@@ -198,6 +198,7 @@ function AgentScreenContent({
       : undefined
   );
 
+
   // Get parent agent ID for back navigation
   const parentAgentId = agent?.parentAgentId;
 

packages/app/src/components/agent-list.tsx

@@ -1,6 +1,6 @@
 import { View, Text, Pressable, FlatList, Modal, RefreshControl, type ListRenderItem } from "react-native";
-import { useCallback, useState, useMemo } from "react";
-import { router } from "expo-router";
+import { useCallback, useMemo, useState } from "react";
+import { router, usePathname } from "expo-router";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
 import { formatTimeAgo } from "@/utils/time";
 import { getAgentProviderDefinition } from "@server/server/agent/provider-manifest";
@@ -17,6 +17,7 @@ interface AgentListProps {
 
 export function AgentList({ agents, isRefreshing = false, onRefresh, selectedAgentId }: AgentListProps) {
   const { theme } = useUnistyles();
+  const pathname = usePathname();
   const [actionAgent, setActionAgent] = useState<AggregatedAgent | null>(null);
 
   // Sort agents with requires attention at the top
@@ -56,7 +57,9 @@ export function AgentList({ agents, isRefreshing = false, onRefresh, selectedAge
         to: "agent",
         params: { serverId, agentId },
       });
-      router.push({
+      const shouldReplace = pathname.startsWith("/agent/");
+      const navigate = shouldReplace ? router.replace : router.push;
+      navigate({
         pathname: "/agent/[serverId]/[agentId]",
         params: {
           serverId,
@@ -64,7 +67,7 @@ export function AgentList({ agents, isRefreshing = false, onRefresh, selectedAge
         },
       });
     },
-    [isActionSheetVisible]
+    [isActionSheetVisible, pathname]
   );
 
   const handleAgentLongPress = useCallback((agent: AggregatedAgent) => {
@@ -176,8 +179,14 @@ export function AgentList({ agents, isRefreshing = false, onRefresh, selectedAge
         contentContainerStyle={styles.listContent}
         keyExtractor={keyExtractor}
         renderItem={renderAgentItem}
+        extraData={selectedAgentId}
         showsVerticalScrollIndicator={false}
         keyboardShouldPersistTaps="handled"
+        initialNumToRender={12}
+        windowSize={7}
+        maxToRenderPerBatch={12}
+        updateCellsBatchingPeriod={16}
+        removeClippedSubviews={true}
         refreshControl={
           onRefresh ? (
             <RefreshControl

packages/app/src/hooks/use-aggregated-agents.ts

@@ -4,6 +4,7 @@ import { useDaemonConnections } from "@/contexts/daemon-connections-context";
 import { useSessionStore } from "@/stores/session-store";
 import type { AgentDirectoryEntry } from "@/types/agent-directory";
 import type { Agent } from "@/stores/session-store";
+import { isPerfLoggingEnabled } from "@/utils/perf";
 
 export interface AggregatedAgent extends AgentDirectoryEntry {
   serverId: string;
@@ -66,7 +67,7 @@ export function useAggregatedAgents(): AggregatedAgentsResult {
         if (agent.parentAgentId) {
           continue;
         }
-        allAgents.push({
+        const nextAgent: AggregatedAgent = {
           id: agent.id,
           serverId,
           serverLabel,
@@ -79,7 +80,8 @@ export function useAggregatedAgents(): AggregatedAgentsResult {
           attentionReason: agent.attentionReason,
           attentionTimestamp: agent.attentionTimestamp,
           parentAgentId: agent.parentAgentId,
-        });
+        };
+        allAgents.push(nextAgent);
       }
     }
 
@@ -138,25 +140,27 @@ export function useAggregatedAgents(): AggregatedAgentsResult {
     // isLoading: Generic loading flag (either initial or revalidating)
     const isLoading = isConnecting;
 
-    const connectionStatesArray = Array.from(connectionStates.entries()).map(([id, state]) => ({
-      id: id.substring(0, 20) + (id.length > 20 ? '...' : ''),
-      status: state.status,
-      sessionReady: state.sessionReady,
-      hasEverReceivedSessionState: state.hasEverReceivedSessionState,
-    }));
+    if (isPerfLoggingEnabled()) {
+      const connectionStatesArray = Array.from(connectionStates.entries()).map(([id, state]) => ({
+        id: id.substring(0, 20) + (id.length > 20 ? '...' : ''),
+        status: state.status,
+        sessionReady: state.sessionReady,
+        hasEverReceivedSessionState: state.hasEverReceivedSessionState,
+      }));
 
-    console.log('[useAggregatedAgents] States:', {
-      hasAnyData,
-      isConnecting,
-      isInitialLoad,
-      isRevalidating,
-      totalConnectionStates: connectionStates.size,
-      connectingReasons: connectingReasons.length > 0 ? connectingReasons : 'none',
-    });
+      console.log('[useAggregatedAgents] States:', {
+        hasAnyData,
+        isConnecting,
+        isInitialLoad,
+        isRevalidating,
+        totalConnectionStates: connectionStates.size,
+        connectingReasons: connectingReasons.length > 0 ? connectingReasons : 'none',
+      });
 
-    console.log('[useAggregatedAgents] Connection States Detail:',
-      JSON.stringify(connectionStatesArray, null, 2)
-    );
+      console.log('[useAggregatedAgents] Connection States Detail:',
+        JSON.stringify(connectionStatesArray, null, 2)
+      );
+    }
 
     return {
       agents: allAgents,