chore(apple): add screenshot studio

apple/UITests/ScreenshotTests.swift

@@ -0,0 +1,44 @@
+import XCTest
+
+/// Captures App Store screenshots by driving the running app and grabbing the
+/// full-screen image on each tab. Run via `apple/scripts/appstore-screenshots.sh`,
+/// which boots the target simulator, runs this test, and extracts the attachments
+/// at the device's native resolution (e.g. 2064×2752 on the 13-inch iPad).
+final class ScreenshotTests: XCTestCase {
+
+	override func setUp() {
+		continueAfterFailure = false
+	}
+
+	func testCaptureAppStoreScreenshots() {
+		let app = XCUIApplication()
+		app.launch()
+
+		// The top pill exposes the three primary tabs. Tap by accessibility label
+		// when available, falling back to a normalized coordinate on the pill.
+		let tabs: [(name: String, dx: CGFloat)] = [
+			("01-Send", 0.407),
+			("02-Receive", 0.487),
+			("03-Settings", 0.579),
+		]
+
+		for tab in tabs {
+			let label = String(tab.name.dropFirst(3)) // "Send" / "Receive" / "Settings"
+			let button = app.buttons[label]
+			if button.waitForExistence(timeout: 10), button.isHittable {
+				button.tap()
+			} else {
+				app.coordinate(withNormalizedOffset: CGVector(dx: tab.dx, dy: 0.039)).tap()
+			}
+
+			// Let the tab transition and any content settle before capturing.
+			Thread.sleep(forTimeInterval: 1.5)
+
+			let screenshot = XCUIScreen.main.screenshot()
+			let attachment = XCTAttachment(screenshot: screenshot)
+			attachment.name = tab.name
+			attachment.lifetime = .keepAlways
+			add(attachment)
+		}
+	}
+}