diff --git a/packages/app/src/app/_layout.tsx b/packages/app/src/app/_layout.tsx
index 895e5e0aa..9c0894ffc 100644
--- a/packages/app/src/app/_layout.tsx
+++ b/packages/app/src/app/_layout.tsx
@@ -834,19 +834,23 @@ function FaviconStatusSync() {
   return null;
 }
 
+const AGENT_SCREEN_OPTIONS = { gestureEnabled: false };
+
 function RootStack() {
   const storeReady = useStoreReady();
   const { theme } = useUnistyles();
+  const stackScreenOptions = useMemo(
+    () => ({
+      headerShown: false,
+      animation: "none" as const,
+      contentStyle: {
+        backgroundColor: theme.colors.surface0,
+      },
+    }),
+    [theme.colors.surface0],
+  );
   return (
-    <Stack
-      screenOptions={{
-        headerShown: false,
-        animation: "none",
-        contentStyle: {
-          backgroundColor: theme.colors.surface0,
-        },
-      }}
-    >
+    <Stack screenOptions={stackScreenOptions}>
       <Stack.Screen name="index" />
       <Stack.Protected guard={storeReady}>
         <Stack.Screen name="welcome" />
@@ -862,7 +866,7 @@ function RootStack() {
         outside this route-level native-stack API.
       */}
       <Stack.Screen name="h/[serverId]/workspace/[workspaceId]" />
-      <Stack.Screen name="h/[serverId]/agent/[agentId]" options={{ gestureEnabled: false }} />
+      <Stack.Screen name="h/[serverId]/agent/[agentId]" options={AGENT_SCREEN_OPTIONS} />
       <Stack.Screen name="h/[serverId]/index" />
       <Stack.Screen name="h/[serverId]/sessions" />
       <Stack.Screen name="h/[serverId]/open-project" />
diff --git a/packages/app/src/app/settings/[section].tsx b/packages/app/src/app/settings/[section].tsx
index 8afddf1c0..e84d71434 100644
--- a/packages/app/src/app/settings/[section].tsx
+++ b/packages/app/src/app/settings/[section].tsx
@@ -1,4 +1,5 @@
 import { useLocalSearchParams } from "expo-router";
+import { useMemo } from "react";
 import SettingsScreen from "@/screens/settings-screen";
 import { isSettingsSectionSlug, type SettingsSectionSlug } from "@/utils/host-routes";
 
@@ -6,6 +7,7 @@ export default function SettingsSectionRoute() {
   const params = useLocalSearchParams<{ section?: string }>();
   const rawSection = typeof params.section === "string" ? params.section : "";
   const section: SettingsSectionSlug = isSettingsSectionSlug(rawSection) ? rawSection : "general";
+  const view = useMemo(() => ({ kind: "section" as const, section }), [section]);
 
-  return <SettingsScreen view={{ kind: "section", section }} />;
+  return <SettingsScreen view={view} />;
 }
diff --git a/packages/app/src/app/settings/hosts/[serverId].tsx b/packages/app/src/app/settings/hosts/[serverId].tsx
index 02260acaa..9a3058c45 100644
--- a/packages/app/src/app/settings/hosts/[serverId].tsx
+++ b/packages/app/src/app/settings/hosts/[serverId].tsx
@@ -1,14 +1,16 @@
 import { useLocalSearchParams } from "expo-router";
+import { useMemo } from "react";
 import { HostRouteBootstrapBoundary } from "@/components/host-route-bootstrap-boundary";
 import SettingsScreen from "@/screens/settings-screen";
 
 export default function SettingsHostRoute() {
   const params = useLocalSearchParams<{ serverId?: string }>();
   const serverId = typeof params.serverId === "string" ? params.serverId.trim() : "";
+  const view = useMemo(() => ({ kind: "host" as const, serverId }), [serverId]);
 
   return (
     <HostRouteBootstrapBoundary>
-      <SettingsScreen view={{ kind: "host", serverId }} />
+      <SettingsScreen view={view} />
     </HostRouteBootstrapBoundary>
   );
 }
diff --git a/packages/app/src/app/settings/index.tsx b/packages/app/src/app/settings/index.tsx
index 00e212c2a..09280b5c5 100644
--- a/packages/app/src/app/settings/index.tsx
+++ b/packages/app/src/app/settings/index.tsx
@@ -3,6 +3,8 @@ import { useIsCompactFormFactor } from "@/constants/layout";
 import SettingsScreen from "@/screens/settings-screen";
 import { buildSettingsSectionRoute } from "@/utils/host-routes";
 
+const ROOT_VIEW = { kind: "root" as const };
+
 export default function SettingsIndexRoute() {
   const isCompactLayout = useIsCompactFormFactor();
 
@@ -10,5 +12,5 @@ export default function SettingsIndexRoute() {
     return <Redirect href={buildSettingsSectionRoute("general")} />;
   }
 
-  return <SettingsScreen view={{ kind: "root" }} />;
+  return <SettingsScreen view={ROOT_VIEW} />;
 }
diff --git a/packages/app/src/components/adaptive-modal-sheet.tsx b/packages/app/src/components/adaptive-modal-sheet.tsx
index c54f2fc2f..2cd7f6f9e 100644
--- a/packages/app/src/components/adaptive-modal-sheet.tsx
+++ b/packages/app/src/components/adaptive-modal-sheet.tsx
@@ -24,6 +24,7 @@ import { isWeb } from "@/constants/platform";
 type EscHandler = () => void;
 const escStack: EscHandler[] = [];
 let escListenerAttached = false;
+const ABSOLUTE_FILL_STYLE = { ...StyleSheet.absoluteFillObject };
 
 function handleEscKeyDown(event: KeyboardEvent) {
   if (event.key !== "Escape") return;
@@ -191,6 +192,10 @@ export function AdaptiveModalSheet({
   const isMobile = useIsCompactFormFactor();
   const titleColor = theme.colors.foreground;
   const resolvedSnapPoints = useMemo(() => snapPoints ?? ["65%", "90%"], [snapPoints]);
+  const handleIndicatorStyle = useMemo(
+    () => ({ backgroundColor: theme.colors.surface2 }),
+    [theme.colors.surface2],
+  );
   const { sheetRef, handleSheetChange } = useIsolatedBottomSheetVisibility({
     visible,
     isEnabled: isMobile,
@@ -204,6 +209,12 @@ export function AdaptiveModalSheet({
     [],
   );
 
+  const titleStyle = useMemo(() => [styles.title, { color: titleColor }], [titleColor]);
+  const desktopCardStyle = useMemo(
+    () => [styles.desktopCard, desktopMaxWidth != null && { maxWidth: desktopMaxWidth }],
+    [desktopMaxWidth],
+  );
+
   useEffect(() => {
     if (!isWeb || isMobile || !visible) return;
     return pushEscHandler(onClose);
@@ -220,14 +231,14 @@ export function AdaptiveModalSheet({
         backdropComponent={renderBackdrop}
         enablePanDownToClose
         backgroundComponent={SheetBackground}
-        handleIndicatorStyle={{ backgroundColor: theme.colors.surface2 }}
+        handleIndicatorStyle={handleIndicatorStyle}
         keyboardBehavior="extend"
         keyboardBlurBehavior="restore"
         accessible={false}
       >
         <View style={styles.bottomSheetHeader} testID={testID}>
           <View style={styles.headerTitleGroup}>
-            <Text key={titleColor} style={[styles.title, { color: titleColor }]} numberOfLines={1}>
+            <Text key={titleColor} style={titleStyle} numberOfLines={1}>
               {title}
             </Text>
             {subtitle}
@@ -256,7 +267,7 @@ export function AdaptiveModalSheet({
     <>
       <View style={styles.header}>
         <View style={styles.headerTitleGroup}>
-          <Text key={titleColor} style={[styles.title, { color: titleColor }]} numberOfLines={1}>
+          <Text key={titleColor} style={titleStyle} numberOfLines={1}>
             {title}
           </Text>
           {subtitle}
@@ -283,12 +294,8 @@ export function AdaptiveModalSheet({
 
   const desktopContent = (
     <View style={styles.desktopOverlay} testID={testID}>
-      <Pressable
-        accessibilityLabel="Dismiss"
-        style={{ ...StyleSheet.absoluteFillObject }}
-        onPress={onClose}
-      />
-      <View style={[styles.desktopCard, desktopMaxWidth != null && { maxWidth: desktopMaxWidth }]}>
+      <Pressable accessibilityLabel="Dismiss" style={ABSOLUTE_FILL_STYLE} onPress={onClose} />
+      <View style={desktopCardStyle}>
         {onFilesDropped ? (
           <FileDropZone onFilesDropped={onFilesDropped}>{cardInner}</FileDropZone>
         ) : (
diff --git a/packages/app/src/components/add-host-modal.tsx b/packages/app/src/components/add-host-modal.tsx
index d49f0b232..37f644c87 100644
--- a/packages/app/src/components/add-host-modal.tsx
+++ b/packages/app/src/components/add-host-modal.tsx
@@ -10,6 +10,8 @@ import { DaemonConnectionTestError, connectToDaemon } from "@/utils/test-daemon-
 import { AdaptiveModalSheet, AdaptiveTextInput } from "./adaptive-modal-sheet";
 import { Button } from "@/components/ui/button";
 
+const FLEX_ONE_STYLE = { flex: 1 } as const;
+
 const styles = StyleSheet.create((theme) => ({
   field: {
     gap: theme.spacing[2],
@@ -274,11 +276,16 @@ export function AddHostModal({ visible, onClose, onCancel, onSaved }: AddHostMod
       </View>
 
       <View style={styles.actions}>
-        <Button style={{ flex: 1 }} variant="secondary" onPress={handleCancel} disabled={isSaving}>
+        <Button
+          style={FLEX_ONE_STYLE}
+          variant="secondary"
+          onPress={handleCancel}
+          disabled={isSaving}
+        >
           Cancel
         </Button>
         <Button
-          style={{ flex: 1 }}
+          style={FLEX_ONE_STYLE}
           variant="default"
           onPress={handleSavePress}
           disabled={isSaving}
diff --git a/packages/app/src/components/agent-stream-view.tsx b/packages/app/src/components/agent-stream-view.tsx
index 20a331639..d2171dbce 100644
--- a/packages/app/src/components/agent-stream-view.tsx
+++ b/packages/app/src/components/agent-stream-view.tsx
@@ -593,6 +593,7 @@ const AgentStreamViewComponent = forwardRef<AgentStreamViewHandle, AgentStreamVi
       };
     }, [baseRenderModel, getGapBetween, pendingPermissionsNode, workingIndicatorNode]);
 
+    const emptyStateStyle = useMemo(() => [stylesheet.emptyState, stylesheet.contentWrapper], []);
     const listEmptyComponent = useMemo(() => {
       if (
         renderModel.boundary.hasVirtualizedHistory ||
@@ -605,11 +606,11 @@ const AgentStreamViewComponent = forwardRef<AgentStreamViewHandle, AgentStreamVi
       }
 
       return (
-        <View style={[stylesheet.emptyState, stylesheet.contentWrapper]}>
+        <View style={emptyStateStyle}>
           <Text style={stylesheet.emptyStateText}>Start chatting with this agent...</Text>
         </View>
       );
-    }, [renderModel]);
+    }, [renderModel, emptyStateStyle]);
 
     const historyItems = renderModel.history;
     const liveHeadItems = renderModel.segments.liveHead;
@@ -647,34 +648,30 @@ const AgentStreamViewComponent = forwardRef<AgentStreamViewHandle, AgentStreamVi
         renderStreamItem(item, index, items, index === 0 ? lastHistoryItem : null),
       [lastHistoryItem, renderStreamItem],
     );
+    const liveAuxiliaryHeaderStyle = useMemo(
+      () => [
+        stylesheet.listHeaderContent,
+        boundary.hasLiveHead
+          ? streamRenderStrategy.getFlatListInverted()
+            ? { paddingBottom: looseGap }
+            : { paddingTop: looseGap }
+          : null,
+      ],
+      [boundary.hasLiveHead, streamRenderStrategy, looseGap],
+    );
     const renderLiveAuxiliary = useCallback<StreamSegmentRenderers["renderLiveAuxiliary"]>(() => {
       if (!auxiliary.pendingPermissions && !auxiliary.workingIndicator) {
         return null;
       }
       return (
         <View style={stylesheet.contentWrapper}>
-          <View
-            style={[
-              stylesheet.listHeaderContent,
-              boundary.hasLiveHead
-                ? streamRenderStrategy.getFlatListInverted()
-                  ? { paddingBottom: looseGap }
-                  : { paddingTop: looseGap }
-                : null,
-            ]}
-          >
+          <View style={liveAuxiliaryHeaderStyle}>
             {auxiliary.pendingPermissions}
             {auxiliary.workingIndicator}
           </View>
         </View>
       );
-    }, [
-      auxiliary.pendingPermissions,
-      auxiliary.workingIndicator,
-      boundary.hasLiveHead,
-      looseGap,
-      streamRenderStrategy,
-    ]);
+    }, [auxiliary.pendingPermissions, auxiliary.workingIndicator, liveAuxiliaryHeaderStyle]);
 
     const renderers = useMemo<StreamSegmentRenderers>(
       () => ({
@@ -788,12 +785,19 @@ function WorkingIndicator() {
     };
   });
 
+  const dotOneCombinedStyle = useMemo(() => [stylesheet.workingDot, dotOneStyle], [dotOneStyle]);
+  const dotTwoCombinedStyle = useMemo(() => [stylesheet.workingDot, dotTwoStyle], [dotTwoStyle]);
+  const dotThreeCombinedStyle = useMemo(
+    () => [stylesheet.workingDot, dotThreeStyle],
+    [dotThreeStyle],
+  );
+
   return (
     <View style={stylesheet.workingIndicatorBubble}>
       <View style={stylesheet.workingDotsRow}>
-        <Animated.View style={[stylesheet.workingDot, dotOneStyle]} />
-        <Animated.View style={[stylesheet.workingDot, dotTwoStyle]} />
-        <Animated.View style={[stylesheet.workingDot, dotThreeStyle]} />
+        <Animated.View style={dotOneCombinedStyle} />
+        <Animated.View style={dotTwoCombinedStyle} />
+        <Animated.View style={dotThreeCombinedStyle} />
       </View>
     </View>
   );
@@ -880,6 +884,10 @@ function PermissionActionButton({
     ],
     [theme.colors.surface2, theme.colors.surface1, theme.colors.borderAccent, isDanger],
   );
+  const optionTextStyle = useMemo(
+    () => [permissionStyles.optionText, { color: textColor }],
+    [textColor],
+  );
   return (
     <Pressable testID={testID} style={pressableStyle} onPress={handlePress} disabled={isResponding}>
       {isRespondingAction ? (
@@ -887,7 +895,7 @@ function PermissionActionButton({
       ) : (
         <View style={permissionStyles.optionContent}>
           <Icon size={14} color={iconColor} />
-          <Text style={[permissionStyles.optionText, { color: textColor }]}>{action.label}</Text>
+          <Text style={optionTextStyle}>{action.label}</Text>
         </View>
       )}
     </Pressable>
@@ -1018,21 +1026,43 @@ function PermissionRequestCard({
     );
   }
 
+  const questionTextStyle = useMemo(
+    () => [permissionStyles.question, { color: theme.colors.foregroundMuted }],
+    [theme.colors.foregroundMuted],
+  );
+  const optionsContainerStyle = useMemo(
+    () => [
+      permissionStyles.optionsContainer,
+      !isMobile && permissionStyles.optionsContainerDesktop,
+    ],
+    [isMobile],
+  );
+  const cardContainerStyle = useMemo(
+    () => [
+      permissionStyles.container,
+      {
+        backgroundColor: theme.colors.surface1,
+        borderColor: theme.colors.border,
+      },
+    ],
+    [theme.colors.surface1, theme.colors.border],
+  );
+  const cardTitleStyle = useMemo(
+    () => [permissionStyles.title, { color: theme.colors.foreground }],
+    [theme.colors.foreground],
+  );
+  const cardDescriptionStyle = useMemo(
+    () => [permissionStyles.description, { color: theme.colors.foregroundMuted }],
+    [theme.colors.foregroundMuted],
+  );
+
   const footer = (
     <>
-      <Text
-        testID="permission-request-question"
-        style={[permissionStyles.question, { color: theme.colors.foregroundMuted }]}
-      >
+      <Text testID="permission-request-question" style={questionTextStyle}>
         How would you like to proceed?
       </Text>
 
-      <View
-        style={[
-          permissionStyles.optionsContainer,
-          !isMobile && permissionStyles.optionsContainerDesktop,
-        ]}
-      >
+      <View style={optionsContainerStyle}>
         {resolvedActions.map((action) => {
           const isDanger = action.variant === "danger" || action.behavior === "deny";
           const isPrimary = action.variant === "primary";
@@ -1080,22 +1110,10 @@ function PermissionRequestCard({
   }
 
   return (
-    <View
-      style={[
-        permissionStyles.container,
-        {
-          backgroundColor: theme.colors.surface1,
-          borderColor: theme.colors.border,
-        },
-      ]}
-    >
-      <Text style={[permissionStyles.title, { color: theme.colors.foreground }]}>{title}</Text>
+    <View style={cardContainerStyle}>
+      <Text style={cardTitleStyle}>{title}</Text>
 
-      {description ? (
-        <Text style={[permissionStyles.description, { color: theme.colors.foregroundMuted }]}>
-          {description}
-        </Text>
-      ) : null}
+      {description ? <Text style={cardDescriptionStyle}>{description}</Text> : null}
 
       {planMarkdown ? (
         <PlanCard title="Proposed plan" text={planMarkdown} disableOuterSpacing />
diff --git a/packages/app/src/components/attachment-lightbox.tsx b/packages/app/src/components/attachment-lightbox.tsx
index 0a9913153..6e8145d77 100644
--- a/packages/app/src/components/attachment-lightbox.tsx
+++ b/packages/app/src/components/attachment-lightbox.tsx
@@ -49,6 +49,7 @@ export function AttachmentLightbox({ metadata, onClose }: AttachmentLightboxProp
 
   const handleImageError = useCallback(() => setErrored(true), []);
   const noopPress = useCallback(() => {}, []);
+  const imageSource = useMemo(() => ({ uri: url ?? "" }), [url]);
 
   if (!metadata) {
     return null;
@@ -74,7 +75,7 @@ export function AttachmentLightbox({ metadata, onClose }: AttachmentLightboxProp
               <Pressable onPress={noopPress} style={styles.imagePressable}>
                 <ExpoImage
                   testID="attachment-lightbox-image"
-                  source={{ uri: url }}
+                  source={imageSource}
                   contentFit="contain"
                   onError={handleImageError}
                   style={imageFillStyle}
diff --git a/packages/app/src/components/composer.tsx b/packages/app/src/components/composer.tsx
index 3fbfed514..668b6d409 100644
--- a/packages/app/src/components/composer.tsx
+++ b/packages/app/src/components/composer.tsx
@@ -113,10 +113,7 @@ function QueuedMessageRow({ item, onEdit, onSendNow }: QueuedMessageRowProps) {
         <Pressable onPress={handleEdit} style={styles.queueActionButton}>
           <Pencil size={theme.iconSize.sm} color={theme.colors.foreground} />
         </Pressable>
-        <Pressable
-          onPress={handleSendNow}
-          style={QUEUE_SEND_BUTTON_STYLE}
-        >
+        <Pressable onPress={handleSendNow} style={QUEUE_SEND_BUTTON_STYLE}>
           <ArrowUp size={theme.iconSize.sm} color="white" />
         </Pressable>
       </View>
diff --git a/packages/app/src/components/desktop/titlebar-drag-region.tsx b/packages/app/src/components/desktop/titlebar-drag-region.tsx
index a3067968d..3855489d5 100644
--- a/packages/app/src/components/desktop/titlebar-drag-region.tsx
+++ b/packages/app/src/components/desktop/titlebar-drag-region.tsx
@@ -17,6 +17,26 @@ import { isNative } from "@/constants/platform";
  * On macOS, Electron handles edge resize natively.
  */
 
+const DRAG_OVERLAY_STYLE: React.CSSProperties = {
+  top: 0,
+  left: 0,
+  display: "block",
+  position: "absolute",
+  width: "100%",
+  height: "100%",
+  // @ts-expect-error — WebkitAppRegion is not in CSSProperties
+  WebkitAppRegion: "drag",
+};
+
+const TOP_RESIZER_STYLE: React.CSSProperties = {
+  position: "absolute",
+  top: 0,
+  width: "100%",
+  height: 4,
+  // @ts-expect-error — WebkitAppRegion is not in CSSProperties
+  WebkitAppRegion: "no-drag",
+};
+
 /**
  * Static drag overlay and top-edge resizer. Returns null on non-Electron.
  * Place as FIRST child of any positioned container that should be draggable.
@@ -29,29 +49,9 @@ export function TitlebarDragRegion() {
   return (
     <>
       {/* Drag overlay — VS Code .titlebar-drag-region (titlebarpart.css:57-64) */}
-      <div
-        style={{
-          top: 0,
-          left: 0,
-          display: "block",
-          position: "absolute",
-          width: "100%",
-          height: "100%",
-          // @ts-expect-error — WebkitAppRegion is not in CSSProperties
-          WebkitAppRegion: "drag",
-        }}
-      />
+      <div style={DRAG_OVERLAY_STYLE} />
       {/* Top-edge resizer — VS Code .resizer (titlebarpart.css:249-256) */}
-      <div
-        style={{
-          position: "absolute",
-          top: 0,
-          width: "100%",
-          height: 4,
-          // @ts-expect-error — WebkitAppRegion is not in CSSProperties
-          WebkitAppRegion: "no-drag",
-        }}
-      />
+      <div style={TOP_RESIZER_STYLE} />
     </>
   );
 }
diff --git a/packages/app/src/components/diff-viewer.tsx b/packages/app/src/components/diff-viewer.tsx
index a2953f323..273efd973 100644
--- a/packages/app/src/components/diff-viewer.tsx
+++ b/packages/app/src/components/diff-viewer.tsx
@@ -17,6 +17,63 @@ interface DiffViewerProps {
   fillAvailableHeight?: boolean;
 }
 
+function DiffLineRow({ line }: { line: DiffLine }) {
+  const lineContainerStyle = React.useMemo(
+    () => [
+      styles.line,
+      line.type === "header" && styles.headerLine,
+      line.type === "add" && styles.addLine,
+      line.type === "remove" && styles.removeLine,
+      line.type === "context" && styles.contextLine,
+    ],
+    [line.type],
+  );
+  const plainLineTextStyle = React.useMemo(
+    () => [
+      styles.lineText,
+      line.type === "header" && styles.headerText,
+      line.type === "add" && styles.addText,
+      line.type === "remove" && styles.removeText,
+      line.type === "context" && styles.contextText,
+    ],
+    [line.type],
+  );
+
+  return (
+    <View style={lineContainerStyle}>
+      {line.segments ? (
+        <Text style={styles.lineText}>
+          <Text style={line.type === "add" ? styles.addText : styles.removeText}>
+            {line.content[0]}
+          </Text>
+          {line.segments.map((segment, segIdx) => (
+            <DiffSegment key={segIdx} segment={segment} lineType={line.type} />
+          ))}
+        </Text>
+      ) : (
+        <Text style={plainLineTextStyle}>{line.content}</Text>
+      )}
+    </View>
+  );
+}
+
+function DiffSegment({
+  segment,
+  lineType,
+}: {
+  segment: NonNullable<DiffLine["segments"]>[number];
+  lineType: DiffLine["type"];
+}) {
+  const segmentStyle = React.useMemo(
+    () => [
+      lineType === "add" ? styles.addText : styles.removeText,
+      segment.changed && (lineType === "add" ? styles.addHighlight : styles.removeHighlight),
+    ],
+    [lineType, segment.changed],
+  );
+  return <Text style={segmentStyle}>{segment.text}</Text>;
+}
+
 export function DiffViewer({
   diffLines,
   maxHeight,
@@ -70,48 +127,7 @@ export function DiffViewer({
       >
         <View style={linesContainerStyle}>
           {diffLines.map((line, index) => (
-            <View
-              key={`${line.type}-${index}`}
-              style={[
-                styles.line,
-                line.type === "header" && styles.headerLine,
-                line.type === "add" && styles.addLine,
-                line.type === "remove" && styles.removeLine,
-                line.type === "context" && styles.contextLine,
-              ]}
-            >
-              {line.segments ? (
-                <Text style={styles.lineText}>
-                  <Text style={line.type === "add" ? styles.addText : styles.removeText}>
-                    {line.content[0]}
-                  </Text>
-                  {line.segments.map((segment, segIdx) => (
-                    <Text
-                      key={segIdx}
-                      style={[
-                        line.type === "add" ? styles.addText : styles.removeText,
-                        segment.changed &&
-                          (line.type === "add" ? styles.addHighlight : styles.removeHighlight),
-                      ]}
-                    >
-                      {segment.text}
-                    </Text>
-                  ))}
-                </Text>
-              ) : (
-                <Text
-                  style={[
-                    styles.lineText,
-                    line.type === "header" && styles.headerText,
-                    line.type === "add" && styles.addText,
-                    line.type === "remove" && styles.removeText,
-                    line.type === "context" && styles.contextText,
-                  ]}
-                >
-                  {line.content}
-                </Text>
-              )}
-            </View>
+            <DiffLineRow key={`${line.type}-${index}`} line={line} />
           ))}
         </View>
       </ScrollView>
diff --git a/packages/app/src/components/draggable-list.web.tsx b/packages/app/src/components/draggable-list.web.tsx
index a08f2be98..d484680df 100644
--- a/packages/app/src/components/draggable-list.web.tsx
+++ b/packages/app/src/components/draggable-list.web.tsx
@@ -1,4 +1,4 @@
-import { useCallback, useRef, useState, type ReactElement } from "react";
+import { useCallback, useMemo, useRef, useState, type ReactElement } from "react";
 import { ScrollView, View } from "react-native";
 import {
   DndContext,
@@ -29,6 +29,8 @@ const restrictToVerticalAxis: Modifier = ({ transform }) => ({
   x: 0,
 });
 
+const DND_MODIFIERS = [restrictToVerticalAxis];
+
 interface SortableItemProps<T> {
   id: string;
   item: T;
@@ -183,12 +185,18 @@ export function DraggableList<T>({
     [clearDragState, items, keyExtractor, onDragEnd],
   );
 
-  const ids = items.map((item, index) => keyExtractor(item, index));
-  const wrapperStyle = [
-    { position: "relative" as const },
-    scrollEnabled ? { flex: 1, minHeight: 0 } : null,
-    containerStyle,
-  ];
+  const ids = useMemo(
+    () => items.map((item, index) => keyExtractor(item, index)),
+    [items, keyExtractor],
+  );
+  const wrapperStyle = useMemo(
+    () => [
+      { position: "relative" as const },
+      scrollEnabled ? { flex: 1, minHeight: 0 } : null,
+      containerStyle,
+    ],
+    [scrollEnabled, containerStyle],
+  );
 
   return (
     <View style={wrapperStyle}>
@@ -209,7 +217,7 @@ export function DraggableList<T>({
           <DndContext
             sensors={sensors}
             collisionDetection={closestCenter}
-            modifiers={[restrictToVerticalAxis]}
+            modifiers={DND_MODIFIERS}
             onDragStart={handleDragStart}
             onDragCancel={clearDragState}
             onDragEnd={handleDragEnd}
@@ -240,7 +248,7 @@ export function DraggableList<T>({
           <DndContext
             sensors={sensors}
             collisionDetection={closestCenter}
-            modifiers={[restrictToVerticalAxis]}
+            modifiers={DND_MODIFIERS}
             onDragStart={handleDragStart}
             onDragCancel={clearDragState}
             onDragEnd={handleDragEnd}
diff --git a/packages/app/src/components/file-explorer-pane.tsx b/packages/app/src/components/file-explorer-pane.tsx
index fe5096fde..ab2663cd2 100644
--- a/packages/app/src/components/file-explorer-pane.tsx
+++ b/packages/app/src/components/file-explorer-pane.tsx
@@ -137,6 +137,11 @@ function TreeRowItem({
     onDownloadEntry(entry);
   }, [onDownloadEntry, entry]);
 
+  const chevronStyle = useMemo(
+    () => [styles.chevron, isExpanded && styles.chevronExpanded],
+    [isExpanded],
+  );
+
   return (
     <Pressable onPress={handlePress} style={pressableStyle}>
       {depth > 0 &&
@@ -157,7 +162,7 @@ function TreeRowItem({
             loading ? (
               <ActivityIndicator size="small" />
             ) : (
-              <View style={[styles.chevron, isExpanded && styles.chevronExpanded]}>
+              <View style={chevronStyle}>
                 <ChevronRight size={16} color={theme.colors.foregroundMuted} />
               </View>
             )
diff --git a/packages/app/src/components/file-pane.tsx b/packages/app/src/components/file-pane.tsx
index a0e15aa10..1dcb274d1 100644
--- a/packages/app/src/components/file-pane.tsx
+++ b/packages/app/src/components/file-pane.tsx
@@ -183,6 +183,11 @@ function FilePreviewBody({
     return lineNumberGutterWidth(highlightedLines.length);
   }, [highlightedLines]);
 
+  const imageSource = useMemo(
+    () => (imagePreviewUri ? { uri: imagePreviewUri } : null),
+    [imagePreviewUri],
+  );
+
   if (isLoading && !preview) {
     return (
       <View style={styles.centerState}>
@@ -292,9 +297,7 @@ function FilePreviewBody({
           showsVerticalScrollIndicator={!showDesktopWebScrollbar}
         >
           <RNImage
-            source={{
-              uri: imagePreviewUri,
-            }}
+            source={imageSource ?? undefined}
             style={styles.previewImage}
             resizeMode="contain"
           />
diff --git a/packages/app/src/components/icons/editor-app-icons.tsx b/packages/app/src/components/icons/editor-app-icons.tsx
index 468020f3b..0f086f0ce 100644
--- a/packages/app/src/components/icons/editor-app-icons.tsx
+++ b/packages/app/src/components/icons/editor-app-icons.tsx
@@ -1,4 +1,5 @@
 import { SquareTerminal } from "lucide-react-native";
+import { useMemo } from "react";
 import { Image, type ImageSourcePropType } from "react-native";
 import {
   isKnownEditorTargetId,
@@ -29,15 +30,10 @@ export function hasBundledEditorAppIcon(editorId: EditorTargetId): editorId is K
 }
 
 export function EditorAppIcon({ editorId, size = 16, color }: EditorAppIconProps) {
+  const imageStyle = useMemo(() => ({ width: size, height: size }), [size]);
   if (!hasBundledEditorAppIcon(editorId)) {
     return <SquareTerminal size={size} color={color} />;
   }
 
-  return (
-    <Image
-      source={EDITOR_APP_IMAGES[editorId]}
-      style={{ width: size, height: size }}
-      resizeMode="contain"
-    />
-  );
+  return <Image source={EDITOR_APP_IMAGES[editorId]} style={imageStyle} resizeMode="contain" />;
 }
diff --git a/packages/app/src/components/left-sidebar.tsx b/packages/app/src/components/left-sidebar.tsx
index edb32b78d..7a2150f08 100644
--- a/packages/app/src/components/left-sidebar.tsx
+++ b/packages/app/src/components/left-sidebar.tsx
@@ -525,20 +525,26 @@ function MobileSidebar({
 
   const overlayPointerEvents = isWeb ? (isOpen ? "auto" : "none") : "box-none";
 
+  const backdropStyle = useMemo(
+    () => [staticStyles.backdrop, backdropAnimatedStyle],
+    [backdropAnimatedStyle],
+  );
+  const mobileSidebarStyle = useMemo(
+    () => [
+      staticStyles.mobileSidebar,
+      mobileSidebarInsetStyle,
+      sidebarAnimatedStyle,
+      { backgroundColor: theme.colors.surfaceSidebar },
+    ],
+    [mobileSidebarInsetStyle, sidebarAnimatedStyle, theme.colors.surfaceSidebar],
+  );
+
   return (
     <View style={StyleSheet.absoluteFillObject} pointerEvents={overlayPointerEvents}>
-      <Animated.View style={[staticStyles.backdrop, backdropAnimatedStyle]} />
+      <Animated.View style={backdropStyle} />
 
       <GestureDetector gesture={closeGesture} touchAction="pan-y">
-        <Animated.View
-          style={[
-            staticStyles.mobileSidebar,
-            mobileSidebarInsetStyle,
-            sidebarAnimatedStyle,
-            { backgroundColor: theme.colors.surfaceSidebar },
-          ]}
-          pointerEvents="auto"
-        >
+        <Animated.View style={mobileSidebarStyle} pointerEvents="auto">
           <View style={styles.sidebarContent} pointerEvents="auto">
             <SidebarHeaderRow
               icon={MessagesSquare}
@@ -713,18 +719,27 @@ function DesktopSidebar({
     width: resizeWidth.value,
   }));
 
+  const paddingTopSpacerStyle = useMemo(() => ({ height: padding.top }), [padding.top]);
+  const desktopSidebarStyle = useMemo(
+    () => [staticStyles.desktopSidebar, resizeAnimatedStyle, { paddingTop: insetsTop }],
+    [resizeAnimatedStyle, insetsTop],
+  );
+  const desktopSidebarBorderStyle = useMemo(() => [styles.desktopSidebarBorder, { flex: 1 }], []);
+  const resizeHandleStyle = useMemo(
+    () => [styles.resizeHandle, isWeb && ({ cursor: "col-resize" } as any)],
+    [],
+  );
+
   if (!isOpen) {
     return null;
   }
 
   return (
-    <Animated.View
-      style={[staticStyles.desktopSidebar, resizeAnimatedStyle, { paddingTop: insetsTop }]}
-    >
-      <View style={[styles.desktopSidebarBorder, { flex: 1 }]}>
+    <Animated.View style={desktopSidebarStyle}>
+      <View style={desktopSidebarBorderStyle}>
         <View style={styles.sidebarDragArea}>
           <TitlebarDragRegion />
-          {padding.top > 0 ? <View style={{ height: padding.top }} /> : null}
+          {padding.top > 0 ? <View style={paddingTopSpacerStyle} /> : null}
           <SidebarHeaderRow
             icon={MessagesSquare}
             label="Sessions"
@@ -823,7 +838,7 @@ function DesktopSidebar({
 
         {/* Resize handle - absolutely positioned over right border */}
         <GestureDetector gesture={resizeGesture}>
-          <View style={[styles.resizeHandle, isWeb && ({ cursor: "col-resize" } as any)]} />
+          <View style={resizeHandleStyle} />
         </GestureDetector>
       </View>
     </Animated.View>
diff --git a/packages/app/src/components/message.tsx b/packages/app/src/components/message.tsx
index 73ea32da7..0175c9e61 100644
--- a/packages/app/src/components/message.tsx
+++ b/packages/app/src/components/message.tsx
@@ -379,17 +379,36 @@ export const UserMessage = memo(function UserMessage({
   const handleHoverOut = useCallback(() => setMessageHovered(false), []);
   const getMessageContent = useCallback(() => message, [message]);
 
+  const containerStyle = useMemo(
+    () => [
+      userMessageStylesheet.container,
+      !resolvedDisableOuterSpacing && [
+        isFirstInGroup && { marginTop: theme.spacing[4] },
+        isLastInGroup && { marginBottom: theme.spacing[4] },
+        !isFirstInGroup || !isLastInGroup ? { marginBottom: theme.spacing[1] } : undefined,
+      ],
+    ],
+    [resolvedDisableOuterSpacing, isFirstInGroup, isLastInGroup, theme.spacing],
+  );
+  const imagePreviewContainerStyle = useMemo(
+    () => [
+      userMessageStylesheet.imagePreviewContainer,
+      hasText ? userMessageStylesheet.imagePreviewSpacing : undefined,
+    ],
+    [hasText],
+  );
+  const copyButtonStyle = useMemo(
+    () => [
+      userMessageStylesheet.copyButton,
+      showCopyButton
+        ? userMessageStylesheet.copyButtonVisible
+        : userMessageStylesheet.copyButtonHidden,
+    ],
+    [showCopyButton],
+  );
+
   return (
-    <View
-      style={[
-        userMessageStylesheet.container,
-        !resolvedDisableOuterSpacing && [
-          isFirstInGroup && { marginTop: theme.spacing[4] },
-          isLastInGroup && { marginBottom: theme.spacing[4] },
-          !isFirstInGroup || !isLastInGroup ? { marginBottom: theme.spacing[1] } : undefined,
-        ],
-      ]}
-    >
+    <View style={containerStyle}>
       <Pressable
         style={userMessageStylesheet.content}
         onHoverIn={handleHoverIn}
@@ -397,12 +416,7 @@ export const UserMessage = memo(function UserMessage({
       >
         <View style={userMessageStylesheet.bubble}>
           {hasImages ? (
-            <View
-              style={[
-                userMessageStylesheet.imagePreviewContainer,
-                hasText ? userMessageStylesheet.imagePreviewSpacing : undefined,
-              ]}
-            >
+            <View style={imagePreviewContainerStyle}>
               {images.map((image, index) => (
                 <View key={`${image.id}-${index}`} style={userMessageStylesheet.imagePill}>
                   <UserMessageAttachmentThumbnail image={image} />
@@ -419,12 +433,7 @@ export const UserMessage = memo(function UserMessage({
         {hasText ? (
           <TurnCopyButton
             getContent={getMessageContent}
-            containerStyle={[
-              userMessageStylesheet.copyButton,
-              showCopyButton
-                ? userMessageStylesheet.copyButtonVisible
-                : userMessageStylesheet.copyButtonHidden,
-            ]}
+            containerStyle={copyButtonStyle}
             accessibilityLabel="Copy message"
             onHoverChange={setCopyButtonHovered}
           />
@@ -569,9 +578,13 @@ const AssistantMarkdownResolvedImage = memo(function AssistantMarkdownResolvedIm
     ],
     [aspectRatio],
   );
+  const frameStyle = useMemo<StyleProp<ViewStyle>>(
+    () => [assistantMessageStylesheet.imageFrame, containerStyle],
+    [containerStyle],
+  );
 
   return (
-    <View style={[assistantMessageStylesheet.imageFrame, containerStyle]}>
+    <View style={frameStyle}>
       <View style={surfaceStyle}>
         <Image
           source={{ uri }}
@@ -675,6 +688,15 @@ function AssistantMarkdownImage({
   const directUri = resolution?.kind === "direct" && !dataImage ? resolution.uri : null;
   const resolvedUri = directUri ?? dataImageAssetUri ?? fileAssetUri ?? null;
 
+  const stateFrameStyle = useMemo<StyleProp<ViewStyle>>(
+    () => [
+      assistantMessageStylesheet.imageFrame,
+      containerStyle,
+      assistantMessageStylesheet.imageState,
+    ],
+    [containerStyle],
+  );
+
   if (resolvedUri) {
     return (
       <AssistantMarkdownResolvedImage
@@ -690,26 +712,14 @@ function AssistantMarkdownImage({
 
   if (query.isLoading || dataImageQuery.isLoading) {
     return (
-      <View
-        style={[
-          assistantMessageStylesheet.imageFrame,
-          containerStyle,
-          assistantMessageStylesheet.imageState,
-        ]}
-      >
+      <View style={stateFrameStyle}>
         <ActivityIndicator size="small" />
       </View>
     );
   }
 
   return (
-    <View
-      style={[
-        assistantMessageStylesheet.imageFrame,
-        containerStyle,
-        assistantMessageStylesheet.imageState,
-      ]}
-    >
+    <View style={stateFrameStyle}>
       <Text style={assistantMessageStylesheet.imageErrorText}>
         {query.error instanceof Error
           ? query.error.message
@@ -727,13 +737,18 @@ interface InlinePathChipProps {
   onPress: (target: InlinePathTarget) => void;
 }
 
+const INLINE_PATH_CHIP_STYLE = [
+  assistantMessageStylesheet.pathChip,
+  assistantMessageStylesheet.pathChipText,
+];
+
 function InlinePathChip({ content, parsed, onPress }: InlinePathChipProps) {
   const handlePress = useCallback(() => onPress(parsed), [onPress, parsed]);
   return (
     <Text
       onPress={handlePress}
       selectable={isWeb ? undefined : false}
-      style={[assistantMessageStylesheet.pathChip, assistantMessageStylesheet.pathChipText]}
+      style={INLINE_PATH_CHIP_STYLE}
     >
       {content}
     </Text>
@@ -755,6 +770,10 @@ function MarkdownLink({
   const handlePress = useCallback(() => onPress(href), [onPress, href]);
   const handleHoverIn = useCallback(() => setHovered(true), []);
   const handleHoverOut = useCallback(() => setHovered(false), []);
+  const hoveredTextStyle = useMemo(
+    () => [style, hovered && { textDecorationLine: "underline" }],
+    [style, hovered],
+  );
   if (isNative) {
     return (
       <Text accessibilityRole="link" onPress={handlePress} style={style}>
@@ -770,7 +789,7 @@ function MarkdownLink({
       onHoverIn={handleHoverIn}
       onHoverOut={handleHoverOut}
     >
-      <Text style={[style, hovered && { textDecorationLine: "underline" }]}>{children}</Text>
+      <Text style={hoveredTextStyle}>{children}</Text>
     </Pressable>
   );
 }
@@ -876,13 +895,17 @@ export const TurnCopyButton = memo(function TurnCopyButton({
 
   const handleHoverIn = useCallback(() => onHoverChange?.(true), [onHoverChange]);
   const handleHoverOut = useCallback(() => onHoverChange?.(false), [onHoverChange]);
+  const pressableStyle = useMemo(
+    () => [turnCopyButtonStylesheet.container, containerStyle],
+    [containerStyle],
+  );
 
   return (
     <Pressable
       onPress={handleCopy}
       onHoverIn={handleHoverIn}
       onHoverOut={handleHoverOut}
-      style={[turnCopyButtonStylesheet.container, containerStyle]}
+      style={pressableStyle}
       accessibilityRole="button"
       accessibilityLabel={
         copied ? (copiedAccessibilityLabel ?? "Copied") : (accessibilityLabel ?? "Copy turn")
@@ -1377,18 +1400,20 @@ export const AssistantMessage = memo(function AssistantMessage({
 
   const blocks = useMemo(() => splitMarkdownBlocks(message), [message]);
 
+  const assistantContainerStyle = useMemo(
+    () => [
+      assistantMessageStylesheet.container,
+      (spacing === "compactTop" || spacing === "compactBoth") &&
+        assistantMessageStylesheet.containerCompactTop,
+      (spacing === "compactBottom" || spacing === "compactBoth") &&
+        assistantMessageStylesheet.containerCompactBottom,
+      !resolvedDisableOuterSpacing && assistantMessageStylesheet.containerSpacing,
+    ],
+    [spacing, resolvedDisableOuterSpacing],
+  );
+
   return (
-    <View
-      testID="assistant-message"
-      style={[
-        assistantMessageStylesheet.container,
-        (spacing === "compactTop" || spacing === "compactBoth") &&
-          assistantMessageStylesheet.containerCompactTop,
-        (spacing === "compactBottom" || spacing === "compactBoth") &&
-          assistantMessageStylesheet.containerCompactBottom,
-        !resolvedDisableOuterSpacing && assistantMessageStylesheet.containerSpacing,
-      ]}
-    >
+    <View testID="assistant-message" style={assistantContainerStyle}>
       {blocks.map((block, index) => (
         <View
           key={index}
@@ -1448,15 +1473,16 @@ export const SpeakMessage = memo(function SpeakMessage({
 }: SpeakMessageProps) {
   const { theme } = useUnistyles();
   const resolvedDisableOuterSpacing = useDisableOuterSpacing(disableOuterSpacing);
+  const containerStyle = useMemo(
+    () => [
+      speakMessageStylesheet.container,
+      !resolvedDisableOuterSpacing && speakMessageStylesheet.containerSpacing,
+    ],
+    [resolvedDisableOuterSpacing],
+  );
 
   return (
-    <View
-      testID="speak-message"
-      style={[
-        speakMessageStylesheet.container,
-        !resolvedDisableOuterSpacing && speakMessageStylesheet.containerSpacing,
-      ]}
-    >
+    <View testID="speak-message" style={containerStyle}>
       <View style={speakMessageStylesheet.header}>
         <MicVocal size={14} color={theme.colors.foregroundMuted} />
         <Text style={speakMessageStylesheet.headerLabel}>Spoke</Text>
@@ -1603,27 +1629,29 @@ export const ActivityLog = memo(function ActivityLog({
     type === "artifact" && artifactType && title ? `${artifactType}: ${title}` : message;
 
   const isInteractive = type === "artifact" || metadata;
+  const pressableStyle = useMemo(
+    () => [
+      activityLogStylesheet.pressable,
+      !resolvedDisableOuterSpacing && activityLogStylesheet.pressableSpacing,
+      config.bg,
+      isInteractive && activityLogStylesheet.pressableActive,
+    ],
+    [resolvedDisableOuterSpacing, config.bg, isInteractive],
+  );
+  const messageTextStyle = useMemo(
+    () => [activityLogStylesheet.messageText, { color: config.color }],
+    [config.color],
+  );
 
   return (
-    <Pressable
-      onPress={handlePress}
-      disabled={!isInteractive}
-      style={[
-        activityLogStylesheet.pressable,
-        !resolvedDisableOuterSpacing && activityLogStylesheet.pressableSpacing,
-        config.bg,
-        isInteractive && activityLogStylesheet.pressableActive,
-      ]}
-    >
+    <Pressable onPress={handlePress} disabled={!isInteractive} style={pressableStyle}>
       <View style={activityLogStylesheet.content}>
         <View style={activityLogStylesheet.row}>
           <View style={activityLogStylesheet.iconContainer}>
             <IconComponent size={16} color={config.color} />
           </View>
           <View style={activityLogStylesheet.textContainer}>
-            <Text style={[activityLogStylesheet.messageText, { color: config.color }]}>
-              {displayMessage}
-            </Text>
+            <Text style={messageTextStyle}>{displayMessage}</Text>
             {metadata && (
               <View style={activityLogStylesheet.detailsRow}>
                 <Text style={activityLogStylesheet.detailsText}>Details</Text>
diff --git a/packages/app/src/components/pair-link-modal.tsx b/packages/app/src/components/pair-link-modal.tsx
index 41aed2f9d..789d66b24 100644
--- a/packages/app/src/components/pair-link-modal.tsx
+++ b/packages/app/src/components/pair-link-modal.tsx
@@ -11,6 +11,8 @@ import { ConnectionOfferSchema } from "@server/shared/connection-offer";
 import { AdaptiveModalSheet, AdaptiveTextInput } from "./adaptive-modal-sheet";
 import { Button } from "@/components/ui/button";
 
+const FLEX_ONE_STYLE = { flex: 1 } as const;
+
 const styles = StyleSheet.create((theme) => ({
   helper: {
     color: theme.colors.foregroundMuted,
@@ -189,7 +191,7 @@ export function PairLinkModal({ visible, onClose, onCancel, onSaved }: PairLinkM
 
       <View style={styles.actions}>
         <Button
-          style={{ flex: 1 }}
+          style={FLEX_ONE_STYLE}
           variant="secondary"
           onPress={handleCancel}
           disabled={isSaving}
@@ -200,7 +202,7 @@ export function PairLinkModal({ visible, onClose, onCancel, onSaved }: PairLinkM
           Cancel
         </Button>
         <Button
-          style={{ flex: 1 }}
+          style={FLEX_ONE_STYLE}
           variant="default"
           onPress={handleSavePress}
           disabled={isSaving}
diff --git a/packages/app/src/components/pr-pane.tsx b/packages/app/src/components/pr-pane.tsx
index 14b101ada..f6e3e99fa 100644
--- a/packages/app/src/components/pr-pane.tsx
+++ b/packages/app/src/components/pr-pane.tsx
@@ -1,4 +1,4 @@
-import { useCallback, useState } from "react";
+import { useCallback, useMemo, useState } from "react";
 import { Pressable, ScrollView, Text, View } from "react-native";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
 import {
@@ -66,6 +66,7 @@ export function PrPane({ data }: { data: PrPaneData }) {
   const stateColor = getStateColor(data.state, theme);
   const StateIcon = getStateIcon(data.state);
   const stateLabel = getStateLabel(data.state);
+  const stateLabelStyle = useMemo(() => [styles.stateLabel, { color: stateColor }], [stateColor]);
 
   return (
     <View style={styles.root}>
@@ -74,7 +75,7 @@ export function PrPane({ data }: { data: PrPaneData }) {
           <>
             <View style={styles.stateLine}>
               <StateIcon size={14} color={stateColor} />
-              <Text style={[styles.stateLabel, { color: stateColor }]}>{stateLabel}</Text>
+              <Text style={stateLabelStyle}>{stateLabel}</Text>
             </View>
             <Text style={styles.title} numberOfLines={3}>
               {data.title}
@@ -197,11 +198,12 @@ function SummaryPill({
   color: string;
   icon: React.ReactNode;
 }) {
+  const textStyle = useMemo(() => [styles.summaryPillText, { color }], [color]);
   if (count === 0) return null;
   return (
     <View style={styles.summaryPill}>
       {icon}
-      <Text style={[styles.summaryPillText, { color }]}>{count}</Text>
+      <Text style={textStyle}>{count}</Text>
     </View>
   );
 }
@@ -239,9 +241,13 @@ function ActivityRow({ item }: { item: PrPaneActivity }) {
   const handlePress = useCallback(() => {
     void openExternalUrl(item.url);
   }, [item.url]);
+  const avatarStyle = useMemo(
+    () => [styles.avatar, { backgroundColor: item.avatarColor }],
+    [item.avatarColor],
+  );
   return (
     <Pressable onPress={handlePress} style={activityPressableStyle}>
-      <View style={[styles.avatar, { backgroundColor: item.avatarColor }]}>
+      <View style={avatarStyle}>
         <Text style={styles.avatarText}>{item.author.slice(0, 1).toUpperCase()}</Text>
       </View>
       <View style={styles.activityMain}>
diff --git a/packages/app/src/components/project-picker-modal.tsx b/packages/app/src/components/project-picker-modal.tsx
index 9fdf49573..7938512a2 100644
--- a/packages/app/src/components/project-picker-modal.tsx
+++ b/packages/app/src/components/project-picker-modal.tsx
@@ -40,13 +40,17 @@ function PathRow({ path, active, onSelect }: PathRowProps) {
     ],
     [active, theme.colors.surface1],
   );
+  const rowTextStyle = useMemo(
+    () => [styles.rowText, { color: theme.colors.foreground }],
+    [theme.colors.foreground],
+  );
   return (
     <Pressable style={pressableStyle} onPress={handlePress}>
       <View style={styles.rowContent}>
         <View style={styles.iconSlot}>
           <Folder size={16} strokeWidth={2.2} color={theme.colors.foregroundMuted} />
         </View>
-        <Text style={[styles.rowText, { color: theme.colors.foreground }]} numberOfLines={1}>
+        <Text style={rowTextStyle} numberOfLines={1}>
           {shortenPath(path)}
         </Text>
       </View>
@@ -192,6 +196,29 @@ export function ProjectPickerModal() {
     return () => window.removeEventListener("keydown", handler, true);
   }, [activeIndex, handleSelectPath, handleSubmitCustom, open, options, query, setOpen]);
 
+  const panelStyle = useMemo(
+    () => [
+      styles.panel,
+      {
+        borderColor: theme.colors.border,
+        backgroundColor: theme.colors.surface0,
+      },
+    ],
+    [theme.colors.border, theme.colors.surface0],
+  );
+  const headerStyle = useMemo(
+    () => [styles.header, { borderBottomColor: theme.colors.border }],
+    [theme.colors.border],
+  );
+  const inputStyle = useMemo(
+    () => [styles.input, { color: theme.colors.foreground }],
+    [theme.colors.foreground],
+  );
+  const emptyTextStyle = useMemo(
+    () => [styles.emptyText, { color: theme.colors.foregroundMuted }],
+    [theme.colors.foregroundMuted],
+  );
+
   if (!serverId) return null;
 
   return (
@@ -199,23 +226,15 @@ export function ProjectPickerModal() {
       <View style={styles.overlay}>
         <Pressable style={styles.backdrop} onPress={handleClose} />
 
-        <View
-          style={[
-            styles.panel,
-            {
-              borderColor: theme.colors.border,
-              backgroundColor: theme.colors.surface0,
-            },
-          ]}
-        >
-          <View style={[styles.header, { borderBottomColor: theme.colors.border }]}>
+        <View style={panelStyle}>
+          <View style={headerStyle}>
             <TextInput
               ref={inputRef}
               value={query}
               onChangeText={handleChangeQuery}
               placeholder="Type a directory path..."
               placeholderTextColor={theme.colors.foregroundMuted}
-              style={[styles.input, { color: theme.colors.foreground }]}
+              style={inputStyle}
               autoCapitalize="none"
               autoCorrect={false}
               autoFocus
@@ -230,13 +249,9 @@ export function ProjectPickerModal() {
             showsVerticalScrollIndicator={false}
           >
             {isSubmitting ? (
-              <Text style={[styles.emptyText, { color: theme.colors.foregroundMuted }]}>
-                Opening project...
-              </Text>
+              <Text style={emptyTextStyle}>Opening project...</Text>
             ) : options.length === 0 && !query.trim() ? (
-              <Text style={[styles.emptyText, { color: theme.colors.foregroundMuted }]}>
-                Start typing a path
-              </Text>
+              <Text style={emptyTextStyle}>Start typing a path</Text>
             ) : (
               <>
                 {options.map((path, index) => (
diff --git a/packages/app/src/components/provider-diagnostic-sheet.tsx b/packages/app/src/components/provider-diagnostic-sheet.tsx
index fbf56608b..83ed23f2f 100644
--- a/packages/app/src/components/provider-diagnostic-sheet.tsx
+++ b/packages/app/src/components/provider-diagnostic-sheet.tsx
@@ -26,6 +26,23 @@ interface ProviderDiagnosticSheetProps {
   serverId: string;
 }
 
+function ModelRow({ model, isFirst }: { model: AgentModelDefinition; isFirst: boolean }) {
+  const rowStyle = useMemo(
+    () => [sheetStyles.modelRow, !isFirst && sheetStyles.modelRowBorder],
+    [isFirst],
+  );
+  return (
+    <View style={rowStyle}>
+      <Text style={sheetStyles.modelLabel} numberOfLines={1}>
+        {model.label}
+      </Text>
+      <Text style={sheetStyles.modelId} numberOfLines={1} selectable>
+        {model.id}
+      </Text>
+    </View>
+  );
+}
+
 export function ProviderDiagnosticSheet({
   provider,
   visible,
@@ -148,14 +165,7 @@ export function ProviderDiagnosticSheet({
       );
     }
     return filteredModels.map((model: AgentModelDefinition, index) => (
-      <View key={model.id} style={[sheetStyles.modelRow, index > 0 && sheetStyles.modelRowBorder]}>
-        <Text style={sheetStyles.modelLabel} numberOfLines={1}>
-          {model.label}
-        </Text>
-        <Text style={sheetStyles.modelId} numberOfLines={1} selectable>
-          {model.id}
-        </Text>
-      </View>
+      <ModelRow key={model.id} model={model} isFirst={index === 0} />
     ));
   }
 
@@ -164,7 +174,7 @@ export function ProviderDiagnosticSheet({
       title={providerLabel}
       visible={visible}
       onClose={onClose}
-      snapPoints={["50%", "85%"]}
+      snapPoints={DIAGNOSTIC_SHEET_SNAP_POINTS}
       scrollable={false}
       headerActions={
         <Pressable
@@ -237,7 +247,7 @@ export function ProviderDiagnosticSheet({
               autoCapitalize="none"
               autoCorrect={false}
               // @ts-expect-error - outlineStyle is web-only
-              style={[sheetStyles.searchInput, isWeb && { outlineStyle: "none" }]}
+              style={DIAGNOSTIC_SEARCH_INPUT_STYLE}
             />
           </View>
         ) : null}
@@ -375,3 +385,6 @@ const sheetStyles = StyleSheet.create((theme) => ({
     gap: theme.spacing[2],
   },
 }));
+
+const DIAGNOSTIC_SHEET_SNAP_POINTS = ["50%", "85%"];
+const DIAGNOSTIC_SEARCH_INPUT_STYLE = [sheetStyles.searchInput, isWeb && { outlineStyle: "none" }];
diff --git a/packages/app/src/components/resize-handle.tsx b/packages/app/src/components/resize-handle.tsx
index a803ef67c..02a932b58 100644
--- a/packages/app/src/components/resize-handle.tsx
+++ b/packages/app/src/components/resize-handle.tsx
@@ -1,4 +1,4 @@
-import { useCallback, useRef, useState } from "react";
+import { useCallback, useMemo, useRef, useState } from "react";
 import { View } from "react-native";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
 
@@ -107,34 +107,40 @@ export function ResizeHandle({
     setActive(false);
   }, []);
 
+  const handleStyle = useMemo(
+    () => [
+      styles.handle,
+      direction === "horizontal" ? styles.handleHorizontal : styles.handleVertical,
+      { backgroundColor: theme.colors.border },
+    ],
+    [direction, theme.colors.border],
+  );
+  const highlightStyle = useMemo(
+    () => [
+      styles.highlight,
+      direction === "horizontal" ? styles.highlightHorizontal : styles.highlightVertical,
+      { backgroundColor: theme.colors.accent },
+    ],
+    [direction, theme.colors.accent],
+  );
+  const hitAreaStyle = useMemo(
+    () => [
+      styles.hitArea,
+      direction === "horizontal" ? styles.hitAreaHorizontal : styles.hitAreaVertical,
+      {
+        cursor: direction === "horizontal" ? "col-resize" : "row-resize",
+      } as any,
+    ],
+    [direction],
+  );
+
   return (
-    <View
-      style={[
-        styles.handle,
-        direction === "horizontal" ? styles.handleHorizontal : styles.handleVertical,
-        { backgroundColor: theme.colors.border },
-      ]}
-    >
-      {highlighted && (
-        <View
-          pointerEvents="none"
-          style={[
-            styles.highlight,
-            direction === "horizontal" ? styles.highlightHorizontal : styles.highlightVertical,
-            { backgroundColor: theme.colors.accent },
-          ]}
-        />
-      )}
+    <View style={handleStyle}>
+      {highlighted && <View pointerEvents="none" style={highlightStyle} />}
       <View
         role="separator"
         aria-orientation={direction === "horizontal" ? "vertical" : "horizontal"}
-        style={[
-          styles.hitArea,
-          direction === "horizontal" ? styles.hitAreaHorizontal : styles.hitAreaVertical,
-          {
-            cursor: direction === "horizontal" ? "col-resize" : "row-resize",
-          } as any,
-        ]}
+        style={hitAreaStyle}
         onPointerDown={handlePointerDown}
         onPointerEnter={handlePointerEnter}
         onPointerLeave={handlePointerLeave}
diff --git a/packages/app/src/components/synced-loader.tsx b/packages/app/src/components/synced-loader.tsx
index a37ef1629..671ab6786 100644
--- a/packages/app/src/components/synced-loader.tsx
+++ b/packages/app/src/components/synced-loader.tsx
@@ -71,15 +71,19 @@ export function SyncedLoader({ size = 10, color }: { size?: number; color: strin
     [animatedStyle, gridWidth, gridHeight],
   );
 
-  return (
-    <View
-      style={{
+  const containerStyle = useMemo(
+    () =>
+      ({
         width: size,
         height: size,
         alignItems: "center",
         justifyContent: "center",
-      }}
-    >
+      }) as const,
+    [size],
+  );
+
+  return (
+    <View style={containerStyle}>
       <Animated.View style={gridStyle}>
         {Array.from({ length: DOT_COUNT }).map((_, dotIndex) => {
           const rowIndex = Math.floor(dotIndex / GRID_COLUMNS);
diff --git a/packages/app/src/components/terminal-emulator.tsx b/packages/app/src/components/terminal-emulator.tsx
index 6e6d20de4..14f05215d 100644
--- a/packages/app/src/components/terminal-emulator.tsx
+++ b/packages/app/src/components/terminal-emulator.tsx
@@ -6,6 +6,7 @@ import {
   useMemo,
   useRef,
   useState,
+  type CSSProperties,
   type MouseEvent as ReactMouseEvent,
   type PointerEvent as ReactPointerEvent,
   type Ref,
@@ -44,6 +45,33 @@ const SCROLLBAR_HANDLE_SCROLL_VISIBILITY_MS = 1_200;
 const SCROLLBAR_HANDLE_SCROLL_ACTIVE_MS = 110;
 const WEBKIT_SCROLLBAR_STYLE_ID = "terminal-emulator-webkit-scrollbar-style";
 
+const HOST_DIV_STYLE: CSSProperties = {
+  flex: 1,
+  minHeight: 0,
+  minWidth: 0,
+  width: "100%",
+  height: "100%",
+  overflow: "hidden",
+  overscrollBehavior: "none",
+  paddingTop: 0,
+  paddingBottom: 0,
+  paddingLeft: 0,
+  paddingRight: 0,
+};
+
+const SCROLLBAR_CONTAINER_STYLE: CSSProperties = {
+  position: "absolute",
+  top: 0,
+  right: 0,
+  bottom: 0,
+  width: 12,
+  display: "flex",
+  alignItems: "center",
+  justifyContent: "flex-start",
+  zIndex: 10,
+  pointerEvents: "none",
+};
+
 interface ViewportMetrics {
   offset: number;
   viewportSize: number;
@@ -625,91 +653,80 @@ export default function TerminalEmulator({
     setIsHandleHovered(false);
   }, []);
 
+  const rootDivStyle = useMemo<CSSProperties>(
+    () => ({
+      position: "relative",
+      display: "flex",
+      width: "100%",
+      height: "100%",
+      minHeight: 0,
+      minWidth: 0,
+      backgroundColor: xtermTheme.background ?? "#0b0b0b",
+      overflow: "hidden",
+      overscrollBehavior: "none",
+      touchAction: "pan-y",
+    }),
+    [xtermTheme.background],
+  );
+  const handleContainerStyle = useMemo<CSSProperties>(
+    () => ({
+      position: "absolute",
+      top: 0,
+      right: -3,
+      width: SCROLLBAR_HANDLE_GRAB_WIDTH,
+      height: thumbRegionHeight,
+      transform: `translateY(${thumbRegionOffset}px)`,
+      cursor: isDraggingScrollbar ? "grabbing" : "grab",
+      touchAction: "none",
+      userSelect: "none",
+      transitionProperty: "transform",
+      transitionDuration: `${handleTravelDurationMs}ms`,
+      transitionTimingFunction: "linear",
+      pointerEvents: handleVisible ? "auto" : "none",
+    }),
+    [
+      thumbRegionHeight,
+      thumbRegionOffset,
+      isDraggingScrollbar,
+      handleTravelDurationMs,
+      handleVisible,
+    ],
+  );
+  const handleInnerStyle = useMemo<CSSProperties>(
+    () => ({
+      marginTop: handleInsetTop,
+      height: scrollbarGeometry.handleSize,
+      width: handleWidth,
+      borderRadius: 999,
+      alignSelf: "center",
+      backgroundColor: "rgba(113, 113, 122, 1)",
+      opacity: handleOpacity,
+      transitionProperty: "opacity, width, background-color",
+      transitionDuration: `${SCROLLBAR_HANDLE_FADE_DURATION_MS}ms, ${SCROLLBAR_HANDLE_WIDTH_TRANSITION_DURATION_MS}ms, ${SCROLLBAR_HANDLE_FADE_DURATION_MS}ms`,
+      transitionTimingFunction: "ease-out, cubic-bezier(0.22, 0.75, 0.2, 1), ease-out",
+    }),
+    [handleInsetTop, scrollbarGeometry.handleSize, handleWidth, handleOpacity],
+  );
+
   return (
     <div
       ref={rootRef}
       data-testid={testId}
       data-terminal-scrollbar-root="true"
-      style={{
-        position: "relative",
-        display: "flex",
-        width: "100%",
-        height: "100%",
-        minHeight: 0,
-        minWidth: 0,
-        backgroundColor: xtermTheme.background ?? "#0b0b0b",
-        overflow: "hidden",
-        overscrollBehavior: "none",
-        touchAction: "pan-y",
-      }}
+      style={rootDivStyle}
       onPointerDown={handleRootPointerDown}
       onContextMenu={handleRootContextMenu}
     >
-      <div
-        ref={hostRef}
-        style={{
-          flex: 1,
-          minHeight: 0,
-          minWidth: 0,
-          width: "100%",
-          height: "100%",
-          overflow: "hidden",
-          overscrollBehavior: "none",
-          paddingTop: 0,
-          paddingBottom: 0,
-          paddingLeft: 0,
-          paddingRight: 0,
-        }}
-      />
+      <div ref={hostRef} style={HOST_DIV_STYLE} />
       {scrollbarGeometry.isVisible ? (
-        <div
-          style={{
-            position: "absolute",
-            top: 0,
-            right: 0,
-            bottom: 0,
-            width: 12,
-            display: "flex",
-            alignItems: "center",
-            justifyContent: "flex-start",
-            zIndex: 10,
-            pointerEvents: "none",
-          }}
-        >
+        <div style={SCROLLBAR_CONTAINER_STYLE}>
           <div
-            style={{
-              position: "absolute",
-              top: 0,
-              right: -3,
-              width: SCROLLBAR_HANDLE_GRAB_WIDTH,
-              height: thumbRegionHeight,
-              transform: `translateY(${thumbRegionOffset}px)`,
-              cursor: isDraggingScrollbar ? "grabbing" : "grab",
-              touchAction: "none",
-              userSelect: "none",
-              transitionProperty: "transform",
-              transitionDuration: `${handleTravelDurationMs}ms`,
-              transitionTimingFunction: "linear",
-              pointerEvents: handleVisible ? "auto" : "none",
-            }}
+            style={handleContainerStyle}
             onPointerDown={handleScrollbarPointerDown}
             onPointerEnter={handleScrollbarPointerEnter}
             onPointerLeave={handleScrollbarPointerLeave}
           >
-            <div
-              style={{
-                marginTop: handleInsetTop,
-                height: scrollbarGeometry.handleSize,
-                width: handleWidth,
-                borderRadius: 999,
-                alignSelf: "center",
-                backgroundColor: "rgba(113, 113, 122, 1)",
-                opacity: handleOpacity,
-                transitionProperty: "opacity, width, background-color",
-                transitionDuration: `${SCROLLBAR_HANDLE_FADE_DURATION_MS}ms, ${SCROLLBAR_HANDLE_WIDTH_TRANSITION_DURATION_MS}ms, ${SCROLLBAR_HANDLE_FADE_DURATION_MS}ms`,
-                transitionTimingFunction: "ease-out, cubic-bezier(0.22, 0.75, 0.2, 1), ease-out",
-              }}
-            />
+            <div style={handleInnerStyle} />
           </div>
         </div>
       ) : null}
diff --git a/packages/app/src/components/tool-call-sheet.tsx b/packages/app/src/components/tool-call-sheet.tsx
index b98967abf..131c7ffa6 100644
--- a/packages/app/src/components/tool-call-sheet.tsx
+++ b/packages/app/src/components/tool-call-sheet.tsx
@@ -102,6 +102,11 @@ export function ToolCallSheetProvider({ children }: ToolCallSheetProviderProps)
     [openToolCall, closeToolCall],
   );
 
+  const handleIndicatorStyle = useMemo(
+    () => ({ backgroundColor: theme.colors.palette.zinc[600] }),
+    [theme.colors.palette.zinc],
+  );
+
   return (
     <ToolCallSheetContext.Provider value={contextValue}>
       {children}
@@ -114,7 +119,7 @@ export function ToolCallSheetProvider({ children }: ToolCallSheetProviderProps)
         backdropComponent={renderBackdrop}
         enablePanDownToClose
         backgroundComponent={CustomSheetBackground}
-        handleIndicatorStyle={{ backgroundColor: theme.colors.palette.zinc[600] }}
+        handleIndicatorStyle={handleIndicatorStyle}
       >
         {sheetData && <ToolCallSheetContent data={sheetData} onClose={closeToolCall} />}
       </IsolatedBottomSheetModal>
diff --git a/packages/app/src/components/ui/autocomplete.tsx b/packages/app/src/components/ui/autocomplete.tsx
index 0268497ca..60f37b22a 100644
--- a/packages/app/src/components/ui/autocomplete.tsx
+++ b/packages/app/src/components/ui/autocomplete.tsx
@@ -206,10 +206,7 @@ export function Autocomplete({
     [ensureActiveItemVisible],
   );
 
-  const containerStyle = useMemo(
-    () => [styles.container, { maxHeight }],
-    [maxHeight],
-  );
+  const containerStyle = useMemo(() => [styles.container, { maxHeight }], [maxHeight]);
 
   if (isLoading) {
     return (
diff --git a/packages/app/src/components/ui/segmented-control.tsx b/packages/app/src/components/ui/segmented-control.tsx
index b0cf05276..78426e69b 100644
--- a/packages/app/src/components/ui/segmented-control.tsx
+++ b/packages/app/src/components/ui/segmented-control.tsx
@@ -111,10 +111,14 @@ function SegmentItem<T extends string>({
     ],
     [isSelected, option.disabled, segmentSizeStyle],
   );
+  const accessibilityState = useMemo(
+    () => ({ selected: isSelected, disabled: option.disabled }),
+    [isSelected, option.disabled],
+  );
   return (
     <Pressable
       accessibilityRole="button"
-      accessibilityState={{ selected: isSelected, disabled: option.disabled }}
+      accessibilityState={accessibilityState}
       disabled={option.disabled}
       testID={option.testID}
       onPress={handlePress}
diff --git a/packages/app/src/components/welcome-screen.tsx b/packages/app/src/components/welcome-screen.tsx
index 84647c039..b57e41882 100644
--- a/packages/app/src/components/welcome-screen.tsx
+++ b/packages/app/src/components/welcome-screen.tsx
@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useState, useSyncExternalStore } from "react";
+import { useCallback, useEffect, useMemo, useState, useSyncExternalStore } from "react";
 import { Pressable, Text, View, ScrollView } from "react-native";
 import { useRouter } from "expo-router";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
@@ -250,14 +250,16 @@ export function WelcomeScreen({ onHostAdded }: WelcomeScreenProps) {
 
   const isConnectingToSavedHosts = hosts.length > 0 && !anyOnlineServerId;
 
+  const scrollContentContainerStyle = useMemo(
+    () => [styles.container, { paddingBottom: theme.spacing[6] + insets.bottom }],
+    [theme.spacing, insets.bottom],
+  );
+
   return (
     <View style={styles.root}>
       <ScrollView
         style={styles.scrollView}
-        contentContainerStyle={[
-          styles.container,
-          { paddingBottom: theme.spacing[6] + insets.bottom },
-        ]}
+        contentContainerStyle={scrollContentContainerStyle}
         showsVerticalScrollIndicator={false}
         testID="welcome-screen"
       >
diff --git a/packages/app/src/components/workspace-hover-card.tsx b/packages/app/src/components/workspace-hover-card.tsx
index c01e92944..ce358292a 100644
--- a/packages/app/src/components/workspace-hover-card.tsx
+++ b/packages/app/src/components/workspace-hover-card.tsx
@@ -335,10 +335,7 @@ function ChecksSummaryContent({
     () => [styles.checksSummaryLabel, hovered && styles.checksSummaryLabelHovered],
     [hovered],
   );
-  const dotStyle = useMemo(
-    () => [styles.checksDot, { backgroundColor: badgeColor }],
-    [badgeColor],
-  );
+  const dotStyle = useMemo(() => [styles.checksDot, { backgroundColor: badgeColor }], [badgeColor]);
   const statusTextStyle = useMemo(
     () => [styles.checksStatusText, { color: badgeColor }],
     [badgeColor],
diff --git a/packages/app/src/components/workspace-setup-dialog.tsx b/packages/app/src/components/workspace-setup-dialog.tsx
index 8a3f90537..d0c9fc3df 100644
--- a/packages/app/src/components/workspace-setup-dialog.tsx
+++ b/packages/app/src/components/workspace-setup-dialog.tsx
@@ -260,6 +260,17 @@ export function WorkspaceSetupDialog() {
     () => ({ backgroundColor: theme.colors.surface2 }),
     [theme.colors.surface2],
   );
+  const iconSource = useMemo(() => (iconDataUri ? { uri: iconDataUri } : null), [iconDataUri]);
+  const statusControlsWithDisabled = useMemo(
+    () =>
+      composerState
+        ? {
+            ...composerState.statusControls,
+            disabled: pendingAction !== null,
+          }
+        : undefined,
+    [composerState, pendingAction],
+  );
 
   if (!pendingWorkspaceSetup || !sourceDirectory) {
     return null;
@@ -267,8 +278,8 @@ export function WorkspaceSetupDialog() {
 
   const subtitleContent = (
     <View style={styles.subtitleRow}>
-      {iconDataUri ? (
-        <Image source={{ uri: iconDataUri }} style={styles.projectIcon} />
+      {iconSource ? (
+        <Image source={iconSource} style={styles.projectIcon} />
       ) : (
         <View style={styles.projectIconFallback}>
           <Text style={styles.projectIconFallbackText}>{placeholderInitial}</Text>
@@ -307,14 +318,7 @@ export function WorkspaceSetupDialog() {
           clearDraft={chatDraft.clear}
           autoFocus
           commandDraftConfig={composerState?.commandDraftConfig}
-          statusControls={
-            composerState
-              ? {
-                  ...composerState.statusControls,
-                  disabled: pendingAction !== null,
-                }
-              : undefined
-          }
+          statusControls={statusControlsWithDisabled}
           inputWrapperStyle={composerInputWrapperStyle}
           onAddImages={handleAddImagesCallback}
         />
diff --git a/packages/app/src/contexts/horizontal-scroll-context.tsx b/packages/app/src/contexts/horizontal-scroll-context.tsx
index 8a4745461..a48c740c1 100644
--- a/packages/app/src/contexts/horizontal-scroll-context.tsx
+++ b/packages/app/src/contexts/horizontal-scroll-context.tsx
@@ -1,4 +1,4 @@
-import { createContext, useContext, useCallback, useRef, type ReactNode } from "react";
+import { createContext, useContext, useCallback, useMemo, useRef, type ReactNode } from "react";
 import { useSharedValue, type SharedValue } from "react-native-reanimated";
 
 interface HorizontalScrollContextValue {
@@ -42,14 +42,17 @@ export function HorizontalScrollProvider({ children }: { children: ReactNode })
     [updateIsAnyScrolled],
   );
 
+  const contextValue = useMemo(
+    () => ({
+      isAnyScrolledRight,
+      registerScrollOffset,
+      unregisterScrollOffset,
+    }),
+    [isAnyScrolledRight, registerScrollOffset, unregisterScrollOffset],
+  );
+
   return (
-    <HorizontalScrollContext.Provider
-      value={{
-        isAnyScrolledRight,
-        registerScrollOffset,
-        unregisterScrollOffset,
-      }}
-    >
+    <HorizontalScrollContext.Provider value={contextValue}>
       {children}
     </HorizontalScrollContext.Provider>
   );
diff --git a/packages/app/src/desktop/components/pair-device-section.tsx b/packages/app/src/desktop/components/pair-device-section.tsx
index 54138cf75..5cacc0dd7 100644
--- a/packages/app/src/desktop/components/pair-device-section.tsx
+++ b/packages/app/src/desktop/components/pair-device-section.tsx
@@ -1,4 +1,4 @@
-import { useCallback } from "react";
+import { useCallback, useMemo } from "react";
 import { ActivityIndicator, Image, Text, TextInput, View } from "react-native";
 import * as Clipboard from "expo-clipboard";
 import * as QRCode from "qrcode";
@@ -50,6 +50,11 @@ export function PairDeviceSection() {
     void handleCopyLink();
   }, [handleCopyLink]);
 
+  const qrImageSource = useMemo(
+    () => (qrQuery.data ? { uri: qrQuery.data } : null),
+    [qrQuery.data],
+  );
+
   if (!showSection) return null;
 
   return (
@@ -98,8 +103,8 @@ export function PairDeviceSection() {
               Scan this QR code with Paseo on your phone, or copy the link below.
             </Text>
             <View style={styles.qrContainer}>
-              {qrQuery.data ? (
-                <Image source={{ uri: qrQuery.data }} style={styles.qrImage} resizeMode="contain" />
+              {qrImageSource ? (
+                <Image source={qrImageSource} style={styles.qrImage} resizeMode="contain" />
               ) : qrQuery.isError ? (
                 <Text style={styles.hint}>QR code unavailable.</Text>
               ) : (
diff --git a/packages/app/src/panels/file-panel.tsx b/packages/app/src/panels/file-panel.tsx
index d830ab259..3beeeb265 100644
--- a/packages/app/src/panels/file-panel.tsx
+++ b/packages/app/src/panels/file-panel.tsx
@@ -6,6 +6,13 @@ import { usePaneContext } from "@/panels/pane-context";
 import type { PanelRegistration } from "@/panels/panel-registry";
 import { useWorkspaceExecutionAuthority } from "@/stores/session-store-hooks";
 
+const CENTERED_PADDED_STYLE = {
+  flex: 1,
+  alignItems: "center",
+  justifyContent: "center",
+  padding: 16,
+} as const;
+
 function useFilePanelDescriptor(target: { kind: "file"; path: string }) {
   const fileName = target.path.split("/").filter(Boolean).pop() ?? target.path;
   return {
@@ -26,7 +33,7 @@ function FilePanel() {
   invariant(target.kind === "file", "FilePanel requires file target");
   if (!workspaceDirectory) {
     return (
-      <View style={{ flex: 1, alignItems: "center", justifyContent: "center", padding: 16 }}>
+      <View style={CENTERED_PADDED_STYLE}>
         <Text>Workspace execution directory not found.</Text>
       </View>
     );
diff --git a/packages/app/src/panels/setup-panel.tsx b/packages/app/src/panels/setup-panel.tsx
index f49a6fe82..149c56593 100644
--- a/packages/app/src/panels/setup-panel.tsx
+++ b/packages/app/src/panels/setup-panel.tsx
@@ -320,13 +320,15 @@ function SetupCommandRow({
     [showDetail],
   );
 
+  const accessibilityState = useMemo(() => ({ expanded: showDetail }), [showDetail]);
+
   return (
     <View style={styles.commandItem}>
       <Pressable
         onPress={handlePress}
         style={pressableStyle}
         accessibilityRole="button"
-        accessibilityState={{ expanded: showDetail }}
+        accessibilityState={accessibilityState}
       >
         <View style={styles.commandStatusIcon}>
           <CommandStatusIcon status={command.status} />
diff --git a/packages/app/src/panels/terminal-panel.tsx b/packages/app/src/panels/terminal-panel.tsx
index cd6499b1e..9da878502 100644
--- a/packages/app/src/panels/terminal-panel.tsx
+++ b/packages/app/src/panels/terminal-panel.tsx
@@ -14,6 +14,14 @@ import { useWorkspaceExecutionAuthority } from "@/stores/session-store-hooks";
 
 type ListTerminalsPayload = ListTerminalsResponse["payload"];
 
+const FLEX_FILL_STYLE = { flex: 1 } as const;
+const CENTERED_PADDED_STYLE = {
+  flex: 1,
+  alignItems: "center",
+  justifyContent: "center",
+  padding: 16,
+} as const;
+
 function trimNonEmpty(value: string | null | undefined): string | null {
   if (typeof value !== "string") {
     return null;
@@ -84,12 +92,12 @@ function TerminalPanel() {
   invariant(target.kind === "terminal", "TerminalPanel requires terminal target");
 
   if (!isWorkspaceFocused) {
-    return <View style={{ flex: 1 }} />;
+    return <View style={FLEX_FILL_STYLE} />;
   }
 
   if (!workspaceDirectory) {
     return (
-      <View style={{ flex: 1, alignItems: "center", justifyContent: "center", padding: 16 }}>
+      <View style={CENTERED_PADDED_STYLE}>
         <Text>
           {workspaceAuthority.ok
             ? "Workspace execution directory not found."
diff --git a/packages/app/src/screens/new-workspace-screen.tsx b/packages/app/src/screens/new-workspace-screen.tsx
index 6afe2d31b..f22418d21 100644
--- a/packages/app/src/screens/new-workspace-screen.tsx
+++ b/packages/app/src/screens/new-workspace-screen.tsx
@@ -480,6 +480,17 @@ export function NewWorkspaceScreen({
     [keyboardAnimatedStyle],
   );
 
+  const statusControlsWithDisabled = useMemo(
+    () =>
+      composerState
+        ? {
+            ...composerState.statusControls,
+            disabled: isPending,
+          }
+        : undefined,
+    [composerState, isPending],
+  );
+
   return (
     <View style={styles.container}>
       <ScreenHeader
@@ -521,14 +532,7 @@ export function NewWorkspaceScreen({
             clearDraft={handleClearDraft}
             autoFocus
             commandDraftConfig={composerState?.commandDraftConfig}
-            statusControls={
-              composerState
-                ? {
-                    ...composerState.statusControls,
-                    disabled: isPending,
-                  }
-                : undefined
-            }
+            statusControls={statusControlsWithDisabled}
             onAddImages={handleAddImagesCallback}
           />
           <Animated.View testID="new-workspace-ref-picker-row" style={optionsRowStyle}>
diff --git a/packages/app/src/screens/settings/providers-section.tsx b/packages/app/src/screens/settings/providers-section.tsx
index 7f13fcaca..2eedaac32 100644
--- a/packages/app/src/screens/settings/providers-section.tsx
+++ b/packages/app/src/screens/settings/providers-section.tsx
@@ -1,4 +1,4 @@
-import { useCallback, useState } from "react";
+import { useCallback, useMemo, useState } from "react";
 import { Pressable, Text, View } from "react-native";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
 import { settingsStyles } from "@/styles/settings";
@@ -47,12 +47,13 @@ function ProviderRow({ def, entry, isFirst, onPress }: ProviderRowProps) {
 
   const handlePress = useCallback(() => onPress(def.id), [def.id, onPress]);
 
+  const rowStyle = useMemo(
+    () => [settingsStyles.row, !isFirst && settingsStyles.rowBorder],
+    [isFirst],
+  );
+
   return (
-    <Pressable
-      style={[settingsStyles.row, !isFirst && settingsStyles.rowBorder]}
-      onPress={handlePress}
-      accessibilityRole="button"
-    >
+    <Pressable style={rowStyle} onPress={handlePress} accessibilityRole="button">
       <View style={settingsStyles.rowContent}>
         <View style={styles.titleRow}>
           <ProviderIcon size={theme.iconSize.sm} color={theme.colors.foreground} />
@@ -124,11 +125,11 @@ export function ProvidersSection({ serverId }: ProvidersSectionProps) {
         style={styles.sectionSpacing}
       >
         {!hasServer || !isConnected ? (
-          <View style={[settingsStyles.card, styles.emptyCard]}>
+          <View style={EMPTY_CARD_STYLE}>
             <Text style={styles.emptyText}>Connect to this host to see providers</Text>
           </View>
         ) : isLoading ? (
-          <View style={[settingsStyles.card, styles.emptyCard]}>
+          <View style={EMPTY_CARD_STYLE}>
             <Text style={styles.emptyText}>Loading...</Text>
           </View>
         ) : (
@@ -181,3 +182,5 @@ const styles = StyleSheet.create((theme) => ({
     marginTop: theme.spacing[1],
   },
 }));
+
+const EMPTY_CARD_STYLE = [settingsStyles.card, styles.emptyCard];
diff --git a/packages/app/src/screens/startup-splash-screen.tsx b/packages/app/src/screens/startup-splash-screen.tsx
index b3ab78e0a..925a3b6dc 100644
--- a/packages/app/src/screens/startup-splash-screen.tsx
+++ b/packages/app/src/screens/startup-splash-screen.tsx
@@ -169,9 +169,19 @@ const styles = StyleSheet.create((theme) => ({
   },
 }));
 
+const TITLE_ERROR_STYLE = [styles.title, styles.titleError];
+
 export function StartupSplashScreen({ bootstrapState }: StartupSplashScreenProps) {
   const { theme } = useUnistyles();
   const webScrollbarStyle = useWebScrollbarStyle();
+  const errorScrollViewStyle = useMemo(
+    () => [styles.errorScrollView, webScrollbarStyle],
+    [webScrollbarStyle],
+  );
+  const logsScrollStyle = useMemo(
+    () => [styles.logsScroll, webScrollbarStyle],
+    [webScrollbarStyle],
+  );
   const [daemonLogs, setDaemonLogs] = useState<DesktopDaemonLogs | null>(null);
   const [logsError, setLogsError] = useState<string | null>(null);
   const [isLoadingLogs, setIsLoadingLogs] = useState(false);
@@ -293,14 +303,14 @@ export function StartupSplashScreen({ bootstrapState }: StartupSplashScreenProps
     <View style={styles.errorScreen}>
       <TitlebarDragRegion />
       <ScrollView
-        style={[styles.errorScrollView, webScrollbarStyle]}
+        style={errorScrollViewStyle}
         contentContainerStyle={styles.errorScrollContent}
         showsVerticalScrollIndicator
       >
         <View style={styles.errorContent}>
           <View style={styles.errorHeader}>
             <PaseoLogo size={64} />
-            <Text style={[styles.title, styles.titleError]}>Something went wrong</Text>
+            <Text style={TITLE_ERROR_STYLE}>Something went wrong</Text>
           </View>
 
           <Text style={styles.errorDescription}>
@@ -314,7 +324,7 @@ export function StartupSplashScreen({ bootstrapState }: StartupSplashScreenProps
 
           <View style={styles.logsContainer}>
             <ScrollView
-              style={[styles.logsScroll, webScrollbarStyle]}
+              style={logsScrollStyle}
               contentContainerStyle={styles.logsContent}
               showsVerticalScrollIndicator
             >
diff --git a/packages/app/src/screens/workspace/workspace-desktop-tabs-row.tsx b/packages/app/src/screens/workspace/workspace-desktop-tabs-row.tsx
index bed4f8429..440b312be 100644
--- a/packages/app/src/screens/workspace/workspace-desktop-tabs-row.tsx
+++ b/packages/app/src/screens/workspace/workspace-desktop-tabs-row.tsx
@@ -259,10 +259,7 @@ function TabChip({
     [isFocused],
   );
   const tabLabelSkeletonStyle = useMemo(
-    () => [
-      styles.tabLabelSkeleton,
-      showCloseButton && styles.tabLabelSkeletonWithCloseButton,
-    ],
+    () => [styles.tabLabelSkeleton, showCloseButton && styles.tabLabelSkeletonWithCloseButton],
     [showCloseButton],
   );
   const tabLabelStyle = useMemo(
@@ -801,9 +798,7 @@ function ResolvedDesktopTabChip({
 
         return (
           <View style={styles.tabSlot}>
-            {showDropIndicatorBefore ? (
-              <View style={TAB_DROP_INDICATOR_BEFORE_STYLE} />
-            ) : null}
+            {showDropIndicatorBefore ? <View style={TAB_DROP_INDICATOR_BEFORE_STYLE} /> : null}
             <TabChip
               tab={item.tab}
               isActive={item.isActive}
@@ -823,9 +818,7 @@ function ResolvedDesktopTabChip({
               onCloseTab={onCloseTab}
               dragHandleProps={dragHandleProps}
             />
-            {showDropIndicatorAfter ? (
-              <View style={TAB_DROP_INDICATOR_AFTER_STYLE} />
-            ) : null}
+            {showDropIndicatorAfter ? <View style={TAB_DROP_INDICATOR_AFTER_STYLE} /> : null}
           </View>
         );
       }}
@@ -996,11 +989,5 @@ const styles = StyleSheet.create((theme) => ({
   },
 }));
 
-const TAB_DROP_INDICATOR_BEFORE_STYLE = [
-  styles.tabDropIndicator,
-  styles.tabDropIndicatorBefore,
-];
-const TAB_DROP_INDICATOR_AFTER_STYLE = [
-  styles.tabDropIndicator,
-  styles.tabDropIndicatorAfter,
-];
+const TAB_DROP_INDICATOR_BEFORE_STYLE = [styles.tabDropIndicator, styles.tabDropIndicatorBefore];
+const TAB_DROP_INDICATOR_AFTER_STYLE = [styles.tabDropIndicator, styles.tabDropIndicatorAfter];
diff --git a/packages/app/src/screens/workspace/workspace-draft-agent-tab.tsx b/packages/app/src/screens/workspace/workspace-draft-agent-tab.tsx
index 9073d6294..13181d276 100644
--- a/packages/app/src/screens/workspace/workspace-draft-agent-tab.tsx
+++ b/packages/app/src/screens/workspace/workspace-draft-agent-tab.tsx
@@ -342,6 +342,34 @@ export function WorkspaceDraftAgentTab({
     [insets.bottom],
   );
 
+  const handleDropdownCloseFocus = useCallback(() => {
+    focusInputRef.current?.();
+  }, []);
+  const composerStatusControls = useMemo(
+    () => ({
+      ...composerState.statusControls,
+      onSelectProvider: handleProviderSelectWithFocus,
+      onSelectMode: handleModeSelectWithFocus,
+      onSelectModel: handleModelSelectWithFocus,
+      onSelectProviderAndModel: handleProviderAndModelSelectWithFocus,
+      onSelectThinkingOption: handleThinkingOptionSelectWithFocus,
+      onSetFeature: handleSetFeatureWithFocus,
+      onDropdownClose: handleDropdownCloseFocus,
+      disabled: isSubmitting,
+    }),
+    [
+      composerState.statusControls,
+      handleProviderSelectWithFocus,
+      handleModeSelectWithFocus,
+      handleModelSelectWithFocus,
+      handleProviderAndModelSelectWithFocus,
+      handleThinkingOptionSelectWithFocus,
+      handleSetFeatureWithFocus,
+      handleDropdownCloseFocus,
+      isSubmitting,
+    ],
+  );
+
   return (
     <FileDropZone onFilesDropped={handleFilesDropped}>
       <View style={styles.container}>
@@ -391,17 +419,7 @@ export function WorkspaceDraftAgentTab({
             onAddImages={handleAddImagesCallback}
             onFocusInput={handleFocusInputCallback}
             commandDraftConfig={composerState.commandDraftConfig}
-            statusControls={{
-              ...composerState.statusControls,
-              onSelectProvider: handleProviderSelectWithFocus,
-              onSelectMode: handleModeSelectWithFocus,
-              onSelectModel: handleModelSelectWithFocus,
-              onSelectProviderAndModel: handleProviderAndModelSelectWithFocus,
-              onSelectThinkingOption: handleThinkingOptionSelectWithFocus,
-              onSetFeature: handleSetFeatureWithFocus,
-              onDropdownClose: () => focusInputRef.current?.(),
-              disabled: isSubmitting,
-            }}
+            statusControls={composerStatusControls}
           />
         </View>
       </View>
diff --git a/packages/app/src/screens/workspace/workspace-scripts-button.tsx b/packages/app/src/screens/workspace/workspace-scripts-button.tsx
index cb89eb311..48216079b 100644
--- a/packages/app/src/screens/workspace/workspace-scripts-button.tsx
+++ b/packages/app/src/screens/workspace/workspace-scripts-button.tsx
@@ -60,10 +60,11 @@ function ScriptActionButtonChildren({
     ) : (
       <Play {...iconProps} fill="transparent" />
     );
+  const labelStyle = useMemo(() => [styles.actionButtonLabel, { color }], [color]);
   return (
     <>
       {iconElement}
-      <Text style={[styles.actionButtonLabel, { color }]}>{label}</Text>
+      <Text style={labelStyle}>{label}</Text>
     </>
   );
 }
@@ -133,9 +134,10 @@ function HostLinkChildren({
 }: HostLinkChildrenProps): ReactElement {
   const showIcon = !disabled && (hovered || isNative);
   const color = hovered && !disabled ? theme.colors.foreground : theme.colors.foregroundMuted;
+  const hostLabelStyle = useMemo(() => [styles.hostLabel, { color }], [color]);
   return (
     <>
-      <Text style={[styles.hostLabel, { color }]} numberOfLines={1}>
+      <Text style={hostLabelStyle} numberOfLines={1}>
         {label}
       </Text>
       <View style={styles.hostIconSlot}>
@@ -181,9 +183,10 @@ function HostLinkRow({ label, url, scriptName }: HostLinkProps): ReactElement {
 function ExitCodeBadge({ code }: { code: number }): ReactElement {
   const { theme } = useUnistyles();
   const color = code === 0 ? theme.colors.foregroundMuted : theme.colors.palette.red[300];
+  const exitTextStyle = useMemo(() => [styles.exitBadgeText, { color }], [color]);
   return (
     <View style={styles.exitBadge}>
-      <Text style={[styles.exitBadgeText, { color }]}>exit {code}</Text>
+      <Text style={exitTextStyle}>exit {code}</Text>
     </View>
   );
 }
@@ -272,6 +275,16 @@ function ScriptRow({
     onStartScript(script.scriptName);
   }, [onStartScript, script.scriptName]);
 
+  const scriptNameStyle = useMemo(
+    () => [
+      styles.scriptName,
+      {
+        color: isRunning ? theme.colors.foreground : theme.colors.foregroundMuted,
+      },
+    ],
+    [isRunning, theme.colors.foreground, theme.colors.foregroundMuted],
+  );
+
   let primaryAction: ReactElement | null = null;
   if (isRunning && liveTerminalId) {
     primaryAction = (
@@ -304,15 +317,7 @@ function ScriptRow({
     >
       <View style={styles.scriptHeader}>
         <ScriptIcon size={14} color={iconColor} style={styles.scriptIcon} />
-        <Text
-          style={[
-            styles.scriptName,
-            {
-              color: isRunning ? theme.colors.foreground : theme.colors.foregroundMuted,
-            },
-          ]}
-          numberOfLines={1}
-        >
+        <Text style={scriptNameStyle} numberOfLines={1}>
           {script.scriptName}
         </Text>
         {showExitBadge ? <ExitCodeBadge code={exitCode} /> : null}
diff --git a/packages/app/src/screens/workspace/workspace-tab-presentation.tsx b/packages/app/src/screens/workspace/workspace-tab-presentation.tsx
index 0be0cd4b5..6f1d7db65 100644
--- a/packages/app/src/screens/workspace/workspace-tab-presentation.tsx
+++ b/packages/app/src/screens/workspace/workspace-tab-presentation.tsx
@@ -146,13 +146,7 @@ export function WorkspaceTabIcon({
         bottom: statusDotOffset,
       },
     ],
-    [
-      statusDotColor,
-      statusDotBorderColor,
-      theme.colors.surface0,
-      statusDotSize,
-      statusDotOffset,
-    ],
+    [statusDotColor, statusDotBorderColor, theme.colors.surface0, statusDotSize, statusDotOffset],
   );
 
   if (shouldShowLoader) {