[PET-42] Replace @expo/vector-icons with lucide-react-native

.agents/skills/building-native-ui/SKILL.md

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+---
+name: building-native-ui
+description: Complete guide for building beautiful apps with Expo Router. Covers fundamentals, styling, components, navigation, animations, patterns, and native tabs.
+version: 1.0.1
+license: MIT
+---
+
+# Expo UI Guidelines
+
+## References
+
+Consult these resources as needed:
+
+```
+references/
+  animations.md          Reanimated: entering, exiting, layout, scroll-driven, gestures
+  controls.md            Native iOS: Switch, Slider, SegmentedControl, DateTimePicker, Picker
+  form-sheet.md          Form sheets in expo-router: configuration, footers and background interaction. 
+  gradients.md           CSS gradients via experimental_backgroundImage (New Arch only)
+  icons.md               SF Symbols via expo-image (sf: source), names, animations, weights
+  media.md               Camera, audio, video, and file saving
+  route-structure.md     Route conventions, dynamic routes, groups, folder organization
+  search.md              Search bar with headers, useSearch hook, filtering patterns
+  storage.md             SQLite, AsyncStorage, SecureStore
+  tabs.md                NativeTabs, migration from JS tabs, iOS 26 features
+  toolbar-and-headers.md Stack headers and toolbar buttons, menus, search (iOS only)
+  visual-effects.md      Blur (expo-blur) and liquid glass (expo-glass-effect)
+  webgpu-three.md        3D graphics, games, GPU visualizations with WebGPU and Three.js
+  zoom-transitions.md    Apple Zoom: fluid zoom transitions with Link.AppleZoom (iOS 18+)
+```
+
+## Running the App
+
+**CRITICAL: Always try Expo Go first before creating custom builds.**
+
+Most Expo apps work in Expo Go without any custom native code. Before running `npx expo run:ios` or `npx expo run:android`:
+
+1. **Start with Expo Go**: Run `npx expo start` and scan the QR code with Expo Go
+2. **Check if features work**: Test your app thoroughly in Expo Go
+3. **Only create custom builds when required** - see below
+
+### When Custom Builds Are Required
+
+You need `npx expo run:ios/android` or `eas build` ONLY when using:
+
+- **Local Expo modules** (custom native code in `modules/`)
+- **Apple targets** (widgets, app clips, extensions via `@bacons/apple-targets`)
+- **Third-party native modules** not included in Expo Go
+- **Custom native configuration** that can't be expressed in `app.json`
+
+### When Expo Go Works
+
+Expo Go supports a huge range of features out of the box:
+
+- All `expo-*` packages (camera, location, notifications, etc.)
+- Expo Router navigation
+- Most UI libraries (reanimated, gesture handler, etc.)
+- Push notifications, deep links, and more
+
+**If you're unsure, try Expo Go first.** Creating custom builds adds complexity, slower iteration, and requires Xcode/Android Studio setup.
+
+## Code Style
+
+- Be cautious of unterminated strings. Ensure nested backticks are escaped; never forget to escape quotes correctly.
+- Always use import statements at the top of the file.
+- Always use kebab-case for file names, e.g. `comment-card.tsx`
+- Always remove old route files when moving or restructuring navigation
+- Never use special characters in file names
+- Configure tsconfig.json with path aliases, and prefer aliases over relative imports for refactors.
+
+## Routes
+
+See `./references/route-structure.md` for detailed route conventions.
+
+- Routes belong in the `app` directory.
+- Never co-locate components, types, or utilities in the app directory. This is an anti-pattern.
+- Ensure the app always has a route that matches "/", it may be inside a group route.
+
+## Library Preferences
+
+- Never use modules removed from React Native such as Picker, WebView, SafeAreaView, or AsyncStorage
+- Never use legacy expo-permissions
+- `expo-audio` not `expo-av`
+- `expo-video` not `expo-av`
+- `expo-image` with `source="sf:name"` for SF Symbols, not `expo-symbols` or `@expo/vector-icons`
+- `react-native-safe-area-context` not react-native SafeAreaView
+- `process.env.EXPO_OS` not `Platform.OS`
+- `React.use` not `React.useContext`
+- `expo-image` Image component instead of intrinsic element `img`
+- `expo-glass-effect` for liquid glass backdrops
+
+## Responsiveness
+
+- Always wrap root component in a scroll view for responsiveness
+- Use `<ScrollView contentInsetAdjustmentBehavior="automatic" />` instead of `<SafeAreaView>` for smarter safe area insets
+- `contentInsetAdjustmentBehavior="automatic"` should be applied to FlatList and SectionList as well
+- Use flexbox instead of Dimensions API
+- ALWAYS prefer `useWindowDimensions` over `Dimensions.get()` to measure screen size
+
+## Behavior
+
+- Use expo-haptics conditionally on iOS to make more delightful experiences
+- Use views with built-in haptics like `<Switch />` from React Native and `@react-native-community/datetimepicker`
+- When a route belongs to a Stack, its first child should almost always be a ScrollView with `contentInsetAdjustmentBehavior="automatic"` set
+- When adding a `ScrollView` to the page it should almost always be the first component inside the route component
+- Prefer `headerSearchBarOptions` in Stack.Screen options to add a search bar
+- Use the `<Text selectable />` prop on text containing data that could be copied
+- Consider formatting large numbers like 1.4M or 38k
+- Never use intrinsic elements like 'img' or 'div' unless in a webview or Expo DOM component
+
+# Styling
+
+Follow Apple Human Interface Guidelines.
+
+## General Styling Rules
+
+- Prefer flex gap over margin and padding styles
+- Prefer padding over margin where possible
+- Always account for safe area, either with stack headers, tabs, or ScrollView/FlatList `contentInsetAdjustmentBehavior="automatic"`
+- Ensure both top and bottom safe area insets are accounted for
+- Inline styles not StyleSheet.create unless reusing styles is faster
+- Add entering and exiting animations for state changes
+- Use `{ borderCurve: 'continuous' }` for rounded corners unless creating a capsule shape
+- ALWAYS use a navigation stack title instead of a custom text element on the page
+- When padding a ScrollView, use `contentContainerStyle` padding and gap instead of padding on the ScrollView itself (reduces clipping)
+- CSS and Tailwind are not supported - use inline styles
+
+## Text Styling
+
+- Add the `selectable` prop to every `<Text/>` element displaying important data or error messages
+- Counters should use `{ fontVariant: 'tabular-nums' }` for alignment
+
+## Shadows
+
+Use CSS `boxShadow` style prop. NEVER use legacy React Native shadow or elevation styles.
+
+```tsx
+<View style={{ boxShadow: "0 1px 2px rgba(0, 0, 0, 0.05)" }} />
+```
+
+'inset' shadows are supported.
+
+# Navigation
+
+## Link
+
+Use `<Link href="/path" />` from 'expo-router' for navigation between routes.
+
+```tsx
+import { Link } from 'expo-router';
+
+// Basic link
+<Link href="/path" />
+
+// Wrapping custom components
+<Link href="/path" asChild>
+  <Pressable>...</Pressable>
+</Link>
+```
+
+Whenever possible, include a `<Link.Preview>` to follow iOS conventions. Add context menus and previews frequently to enhance navigation.
+
+## Stack
+
+- ALWAYS use `_layout.tsx` files to define stacks
+- Use Stack from 'expo-router/stack' for native navigation stacks
+
+### Page Title
+
+Set the page title in Stack.Screen options:
+
+```tsx
+<Stack.Screen options={{ title: "Home" }} />
+```
+
+## Context Menus
+
+Add long press context menus to Link components:
+
+```tsx
+import { Link } from "expo-router";
+
+<Link href="/settings" asChild>
+  <Link.Trigger>
+    <Pressable>
+      <Card />
+    </Pressable>
+  </Link.Trigger>
+  <Link.Menu>
+    <Link.MenuAction
+      title="Share"
+      icon="square.and.arrow.up"
+      onPress={handleSharePress}
+    />
+    <Link.MenuAction
+      title="Block"
+      icon="nosign"
+      destructive
+      onPress={handleBlockPress}
+    />
+    <Link.Menu title="More" icon="ellipsis">
+      <Link.MenuAction title="Copy" icon="doc.on.doc" onPress={() => {}} />
+      <Link.MenuAction
+        title="Delete"
+        icon="trash"
+        destructive
+        onPress={() => {}}
+      />
+    </Link.Menu>
+  </Link.Menu>
+</Link>;
+```
+
+## Link Previews
+
+Use link previews frequently to enhance navigation:
+
+```tsx
+<Link href="/settings">
+  <Link.Trigger>
+    <Pressable>
+      <Card />
+    </Pressable>
+  </Link.Trigger>
+  <Link.Preview />
+</Link>
+```
+
+Link preview can be used with context menus.
+
+## Modal
+
+Present a screen as a modal:
+
+```tsx
+<Stack.Screen name="modal" options={{ presentation: "modal" }} />
+```
+
+Prefer this to building a custom modal component.
+
+## Sheet
+
+Present a screen as a dynamic form sheet:
+
+```tsx
+<Stack.Screen
+  name="sheet"
+  options={{
+    presentation: "formSheet",
+    sheetGrabberVisible: true,
+    sheetAllowedDetents: [0.5, 1.0],
+    contentStyle: { backgroundColor: "transparent" },
+  }}
+/>
+```
+
+- Using `contentStyle: { backgroundColor: "transparent" }` makes the background liquid glass on iOS 26+.
+
+## Common route structure
+
+A standard app layout with tabs and stacks inside each tab:
+
+```
+app/
+  _layout.tsx — <NativeTabs />
+  (index,search)/
+    _layout.tsx — <Stack />
+    index.tsx — Main list
+    search.tsx — Search view
+```
+
+```tsx
+// app/_layout.tsx
+import { NativeTabs, Icon, Label } from "expo-router/unstable-native-tabs";
+import { Theme } from "../components/theme";
+
+export default function Layout() {
+  return (
+    <Theme>
+      <NativeTabs>
+        <NativeTabs.Trigger name="(index)">
+          <Icon sf="list.dash" />
+          <Label>Items</Label>
+        </NativeTabs.Trigger>
+        <NativeTabs.Trigger name="(search)" role="search" />
+      </NativeTabs>
+    </Theme>
+  );
+}
+```
+
+Create a shared group route so both tabs can push common screens:
+
+```tsx
+// app/(index,search)/_layout.tsx
+import { Stack } from "expo-router/stack";
+import { PlatformColor } from "react-native";
+
+export default function Layout({ segment }) {
+  const screen = segment.match(/\((.*)\)/)?.[1]!;
+  const titles: Record<string, string> = { index: "Items", search: "Search" };
+
+  return (
+    <Stack
+      screenOptions={{
+        headerTransparent: true,
+        headerShadowVisible: false,
+        headerLargeTitleShadowVisible: false,
+        headerLargeStyle: { backgroundColor: "transparent" },
+        headerTitleStyle: { color: PlatformColor("label") },
+        headerLargeTitle: true,
+        headerBlurEffect: "none",
+        headerBackButtonDisplayMode: "minimal",
+      }}
+    >
+      <Stack.Screen name={screen} options={{ title: titles[screen] }} />
+      <Stack.Screen name="i/[id]" options={{ headerLargeTitle: false }} />
+    </Stack>
+  );
+}
+```