Post Hero

Recreate the "Post Hero" screen in React Native using LumioUI.

Goal: Page through a photo series full screen with likes, comments, captions and exposure notes. Pick any frame from the strip below and the photo crossfades in; press and hold to see it clean. Match the reference implementation's layout, behavior, and motion exactly — this is a production screen, not a mockup.

## Setup

Fastest path — install the screen plus its component deps:

```bash
npx @lumioui/cli add pro/social-post-hero
```

Or pull just the components: `npx @lumioui/cli add avatar pro/follow-button glass icon like-button text`

Native packages:
- react-native-reanimated@*
- react-native-safe-area-context@*
- react-native-svg@*

Stack assumptions: Expo SDK 54 / RN 0.81, Reanimated 4, NativeWind v4, TypeScript strict, Expo Go compatible.

## Components — how, where, when

### `avatar` — Circular profile image with fallback initials and a presence dot. An optional mode shows presence on the photo itself, bright when online and faded when away or offline.
- `<Avatar>` ×1

### `follow-button` — Follow button that confirms with a check, then reshapes into a quieter Following state. Unfollowing takes two taps, and it handles requested, follow-back and failed follows gracefully.
- `<FollowButton>` ×1

### `glass` — Glass surface for cards and controls: system glass on newer iOS, real refraction on the web and a frosted look elsewhere. Light can gather under your finger, and panes merge on newer iOS and the web.
- `<Glass>` ×1

### `icon` — Icon set drawn on one consistent grid, sized and coloured from your theme. The heart, star and bookmark can fill in place inside their outline, then fade back out.
- `<Icon>` ×5

### `like-button` — Heart toggle for social feeds that fills from the bottom up with a soft glow and updates the count in place. It fills however the post gets liked, including a double-tap on the photo.
- `<LikeButton>` ×1

### `text` — Themed type scale from caption to display that follows light and dark mode. Includes a pull-quote style with an accent rule and a quieter dimmed tone for secondary text.
- `<Text>` ×10

## Conventions (non-negotiable)

- Styling via NativeWind `className` with semantic tokens only: `bg-background`, `text-foreground`, `bg-card`, `text-card-foreground`, `bg-secondary`, `bg-muted`, `text-muted-foreground`, `bg-accent`, `bg-destructive`, `border-border`. Hard-coded colors only inside media overlays (`text-white`, `bg-black/N`).
- Motion via the token presets from `@lumioui/core` (`spring.press`, `spring.surface`, `spring.glide`, `timing.fast`, `timing.slow`, …) — no bespoke spring configs or durations.
- Gate transform motion behind `useReducedMotion()`; keep opacity/color feedback, drop travel and overshoot.
- Haptics via `useHaptic()`: `light` on press, `selection` on toggle/select, `warning` on invalid input. Never import expo-haptics directly.
- Press feedback via `usePressAnimation()` (~0.97 scale), not `activeOpacity` tricks.
- a11y: `accessibilityRole` + `accessibilityLabel` on every control, touch targets ≥44pt.
- Entrance choreography: staggered `Mount` wrappers (delay 0/60/120…) so regions land in sequence instead of popping in at once.
- Wrap the screen in `SafeAreaView`; keep dark mode working via the semantic tokens.

## Deliverable

One file: `screens/social/post-hero.tsx` exporting PostHeroScreen. Preserve the props interface — the host app wires the callbacks (navigation, submit handlers) through them.

## Reference implementation

This is a LumioUI Pro item: its source is not published in the docs. Install it with a Pro license key
(set `LUMIO_LICENSE_KEY`; keys are on lumioui.com/account) and read the installed file as the reference:

```bash
npx @lumioui/cli add pro/social-post-hero
```

The source lands at `screens/social/post-hero.tsx`.

Screen: https://lumioui.com/screens/social-post-hero