Build a Cash App Clone in Swift with AI

Build a polished, fully working native iOS app in SwiftUI named Cashly: an original peer-to-peer payments app that recreates the core experience of Cash App, but with its own name, its own original logo and its own color palette. Do NOT use the Cash App name, logo, wordmark, app icon or any trademarked asset anywhere in the app. Design an original Cashly logo mark, drawn with SwiftUI shapes (Path/Canvas) or made as a generated image asset, and use it in the header.

Screens and flows (bold minimal UI with your own signature accent, e.g. electric blue #2E5BFF, not green; bottom bar: Money, Card, Pay (center, default screen), Investing, Activity):
1. Pay (launch screen): the whole screen is the accent color with a huge centered amount "$0" in a heavy rounded font, a number pad (1-9, ., 0, backspace) whose digits pop in with a spring as you type, comma formatting ($1,250), a shake + haptic on an invalid entry (more than 2 decimals or over $5,000), a "USD" currency pill, a QR scanner icon and your avatar at the top, and two big pill buttons "Request" and "Pay".
2. Pay flow: Pay opens a recipient screen "To: Name, $Cashtag, Phone, Email" with search over 15 fixture contacts (avatars, names, $cashtags, recent and suggested), a "For" note field (e.g. "Pizza night 🍕"), then a confirm step and a success screen: animated check, "$45.00 sent to Maya Chen", "For: Pizza night 🍕", Done. The balance drops and the payment appears at the top of Activity. Request works the same and shows "Request sent" with a pending row.
3. Money: balance "$2,847.32" with "Add Cash" and "Cash Out" (sheet with amount chips and Standard/Instant choice; completing updates the balance), a savings card with a goal progress bar, "Bitcoin" and "Stocks" mini cards with sparkline charts, a direct deposit card with account/routing (masked, tap to reveal).
4. Card: an original debit card design (matte black with your logo, holographic sheen that moves when dragged, "ANSH NANDA", masked number, tap to flip to show number/expiry/CVV), "Lock card" toggle that greys the card with a lock animation, and "Boosts" (offers like "10% off at Beanline Coffee") with Add/Remove toggles and only one active at a time.
5. Investing: portfolio value "$6,412.18 +$212.40 (3.4%) Today" with a Swift Charts line chart that you can scrub with your finger (chartOverlay + DragGesture) to see the price at a point, range tabs 1D 1W 1M 3M 1Y ALL that animate the chart, holdings list (invented tickers) with sparklines, and a Bitcoin section.
6. Activity: searchable list of 20 transactions grouped by date with avatars or merchant icons, notes, +/- amounts in green/black, "Pending" chips; tapping one opens a receipt sheet (amount, to/from, note, date, "Completed", transaction id, "Pay again").
7. Profile (avatar on Pay): your $cashtag "$anshn", a QR code generated with Core Image (CIFilter.qrCodeGenerator), "Copy cashtag", limits and settings rows.

Rules for the whole app:
- Native SwiftUI for iOS 26, the deployment target the Vibecode iOS template already uses (do not change it). iPhone-first layout. SF Symbols are fine for UI icons (never for the Cash App logo or any brand mark).
- Everything runs on-device from realistic, deterministic fixture data in one Swift file (e.g. Fixtures.swift: real-sounding names, handles, numbers, timestamps, captions). No backend (leave the backend/ folder alone and make no network calls except loading images and media), no login, no permissions (no camera, photos, location, contacts, notifications, microphone). Do not persist state (no UserDefaults, @AppStorage, SwiftData or files): every launch starts from the same fixture state, so the demo is repeatable.
- Remote images: load images.unsplash.com photo URLs (with ?w=800&q=80 style params) with AsyncImage (or a small cached image view) and a tasteful placeholder. Verify every image and media URL with `curl -s -o /dev/null -w "%{http_code}" <url>` before you use it and replace any that do not return 200. No broken or blank images anywhere.
- Polish: native-feeling spacing and typography, safe areas, smooth spring animations (.spring/.snappy, most under 350 ms), matchedGeometryEffect for hero and expand/collapse transitions where it helps, .sensoryFeedback haptics on key taps, pressed states, and loading/empty states. Simulated waits stay short (under 3 s). Every button visible on screen does something sensible; nothing is a dead end.
- Keep the compiler happy: small files (under ~300 lines each), big view bodies split into subviews, and no long chained expressions, so nothing hits "unable to type-check this expression in reasonable time".
- It must build with zero errors and run in the iOS simulator with no crash. Walk through every flow above and fix anything broken.