Detail sheet: hero aircraft photo via planespotters

Adds a 200pt-tall hero image at the top of the detail sheet showing
the actual airframe (registration-keyed), surfacing special liveries
naturally — photographers chase one-off paint jobs first, so the
most recent photo is usually the most recent livery scheme.

AircraftPhotoService wraps planespotters.net's public API:
  - Lookup by registration (FR24 enrichment) first
  - Falls back to ICAO24 hex when no registration
  - In-memory cache (hits and misses) so we never re-query the same
    airframe twice in a session
  - User-Agent includes contact URL per planespotters' TOS
  - Photographer attribution rendered in the AIRCRAFT section,
    tap to open the planespotters page

Sheet hides the banner entirely when no photo exists.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Flights.xcodeproj/project.pbxproj

@@ -60,6 +60,7 @@
 		LVCC000CCCC000CCCC000001 /* aircraftDB.json in Resources */ = {isa = PBXBuildFile; fileRef = LVCC000CCCC000CCCC000002 /* aircraftDB.json */; };
 		LVDD000DDDD000DDDD000001 /* LocationService.swift in Sources */ = {isa = PBXBuildFile; fileRef = LVDD000DDDD000DDDD000002 /* LocationService.swift */; };
 		LVEE000EEEE000EEEE000001 /* FR24Client.swift in Sources */ = {isa = PBXBuildFile; fileRef = LVEE000EEEE000EEEE000002 /* FR24Client.swift */; };
+		LVFF000FFFF000FFFF000001 /* AircraftPhotoService.swift in Sources */ = {isa = PBXBuildFile; fileRef = LVFF000FFFF000FFFF000002 /* AircraftPhotoService.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -128,6 +129,7 @@
 		LVCC000CCCC000CCCC000002 /* aircraftDB.json */ = {isa = PBXFileReference; lastKnownFileType = text.json; path = aircraftDB.json; sourceTree = "<group>"; };
 		LVDD000DDDD000DDDD000002 /* LocationService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocationService.swift; sourceTree = "<group>"; };
 		LVEE000EEEE000EEEE000002 /* FR24Client.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FR24Client.swift; sourceTree = "<group>"; };
+		LVFF000FFFF000FFFF000002 /* AircraftPhotoService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AircraftPhotoService.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -249,6 +251,7 @@
 				LVAA000AAAA000AAAA000002 /* AircraftDatabase.swift */,
 				LVDD000DDDD000DDDD000002 /* LocationService.swift */,
 				LVEE000EEEE000EEEE000002 /* FR24Client.swift */,
+				LVFF000FFFF000FFFF000002 /* AircraftPhotoService.swift */,
 			);
 			path = Services;
 			sourceTree = "<group>";
@@ -422,6 +425,7 @@
 				LVBB000BBBB000BBBB000001 /* LiveFilterPicker.swift in Sources */,
 				LVDD000DDDD000DDDD000001 /* LocationService.swift in Sources */,
 				LVEE000EEEE000EEEE000001 /* FR24Client.swift in Sources */,
+				LVFF000FFFF000FFFF000001 /* AircraftPhotoService.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

Flights/Services/AircraftPhotoService.swift

@@ -0,0 +1,117 @@
+import Foundation
+
+/// Aircraft photo lookup, backed by planespotters.net's public API.
+///
+/// Two lookup paths, tried in order:
+///   1. By registration / tail number (e.g. "N971NN") — preferred, since
+///      FR24's feed gives us this inline.
+///   2. By 24-bit ICAO transponder hex (e.g. "ad8895") — fallback when
+///      we don't have a registration (most GA / military aircraft).
+///
+/// Planespotters serves the most recent photo of that airframe — which
+/// naturally surfaces special liveries, since photographers prioritize
+/// catching one-off paint schemes the moment they appear.
+///
+/// Their TOS requires:
+///   - A User-Agent with a contact URL.
+///   - Photographer attribution wherever the photo is shown.
+/// Both are honored here.
+actor AircraftPhotoService {
+    static let shared = AircraftPhotoService()
+
+    struct Photo: Hashable, Sendable {
+        let thumbnailURL: URL    // ~200×112
+        let largeURL: URL        // ~497×280
+        let detailLink: URL?     // planespotters page (attribution requires linking)
+        let photographer: String?
+    }
+
+    private var cache: [String: Photo?] = [:]
+    private let session: URLSession
+
+    private init(session: URLSession = .shared) {
+        self.session = session
+    }
+
+    /// Returns the most recent photo for an airframe, or nil if none.
+    /// Results (hits AND misses) are cached for the lifetime of the app
+    /// so we never re-hit planespotters for the same airframe twice.
+    func photo(registration: String?, icao24: String) async -> Photo? {
+        let key = (registration?.uppercased())
+            ?? icao24.uppercased()
+        if let cached = cache[key] { return cached }
+
+        // 1) Try registration. Planespotters indexes by tail number and
+        //    most operators are accurately mapped.
+        if let reg = registration?.uppercased(), !reg.isEmpty {
+            if let p = await fetch(path: "reg/\(reg)") {
+                cache[key] = p
+                return p
+            }
+        }
+        // 2) Fall back to ICAO24 hex — slower index but catches some
+        //    airframes that don't have a current registration on file.
+        let hexKey = icao24.uppercased()
+        if let p = await fetch(path: "hex/\(hexKey)") {
+            cache[key] = p
+            return p
+        }
+        // Cache the miss so we don't re-query.
+        cache[key] = .some(nil)
+        return nil
+    }
+
+    private func fetch(path: String) async -> Photo? {
+        guard let url = URL(string: "https://api.planespotters.net/pub/photos/\(path)") else {
+            return nil
+        }
+        var req = URLRequest(url: url)
+        req.timeoutInterval = 8
+        // Planespotters' TOS requires a contact URL in the User-Agent
+        // string. Without it the API returns an error blob.
+        req.setValue(
+            "Flights/1.0 (+https://github.com/admin/Flights)",
+            forHTTPHeaderField: "User-Agent"
+        )
+        req.setValue("application/json", forHTTPHeaderField: "Accept")
+
+        do {
+            let (data, resp) = try await session.data(for: req)
+            guard let http = resp as? HTTPURLResponse, (200..<300).contains(http.statusCode) else {
+                return nil
+            }
+            guard let root = try JSONSerialization.jsonObject(with: data) as? [String: Any],
+                  let photos = root["photos"] as? [[String: Any]],
+                  let first = photos.first
+            else { return nil }
+            return Self.parse(first)
+        } catch {
+            return nil
+        }
+    }
+
+    private static func parse(_ row: [String: Any]) -> Photo? {
+        guard let thumbObj = row["thumbnail_large"] as? [String: Any] ?? row["thumbnail"] as? [String: Any],
+              let thumbSrc = thumbObj["src"] as? String,
+              let thumbURL = URL(string: thumbSrc)
+        else { return nil }
+
+        let large: URL = {
+            if let lg = row["thumbnail_large"] as? [String: Any],
+               let s = lg["src"] as? String,
+               let u = URL(string: s) { return u }
+            return thumbURL
+        }()
+
+        let link = (row["link"] as? String).flatMap(URL.init(string:))
+        let photographer = (row["photographer"] as? String)
+            .flatMap { $0.isEmpty ? nil : $0 }
+
+        return Photo(
+            thumbnailURL: thumbURL,
+            largeURL: large,
+            detailLink: link,
+            photographer: photographer
+        )
+    }
+}

Flights/Views/LiveFlightDetailSheet.swift

@@ -9,6 +9,7 @@ struct LiveFlightDetailSheet: View {
 
     @State private var recentFlights: [OpenSkyFlight] = []
     @State private var isLoadingRoute = false
+    @State private var aircraftPhoto: AircraftPhotoService.Photo?
 
     /// The resolved route for the current selection. Built from a cascade:
     /// scheduled flight (via route-explorer) → OpenSky history → trail-based
@@ -32,10 +33,14 @@ struct LiveFlightDetailSheet: View {
     }
 
     @Environment(\.dismiss) private var dismiss
+    @Environment(\.openURL) private var openURL
 
     var body: some View {
         NavigationStack {
             ScrollView {
+                VStack(alignment: .leading, spacing: 0) {
+                    photoBanner
+
                     VStack(alignment: .leading, spacing: 16) {
                         header
 
@@ -72,9 +77,14 @@ struct LiveFlightDetailSheet: View {
                             .padding(.top, 4)
 
                         aircraftCard
+
+                        if let photo = aircraftPhoto, let credit = photo.photographer {
+                            photoCredit(name: credit, link: photo.detailLink)
+                        }
                     }
                     .padding(16)
                 }
+            }
             .background(FlightTheme.background.ignoresSafeArea())
             .toolbar {
                 ToolbarItem(placement: .cancellationAction) {
@@ -87,6 +97,12 @@ struct LiveFlightDetailSheet: View {
             .task {
                 await resolveRoute()
             }
+            .task(id: aircraft.icao24) {
+                aircraftPhoto = await AircraftPhotoService.shared.photo(
+                    registration: aircraft.enrichment?.registration,
+                    icao24: aircraft.icao24
+                )
+            }
         }
     }
 
@@ -188,6 +204,48 @@ struct LiveFlightDetailSheet: View {
         }
     }
 
+    // MARK: - Photo banner
+    //
+    // Hero image at the very top of the sheet, sourced from planespotters.
+    // Hides itself entirely when no photo is available (lots of GA / cargo
+    // / older airframes have no public photo). Most recent photo per
+    // airframe is what planespotters serves — which means special
+    // liveries surface naturally because photographers chase them first.
+
+    @ViewBuilder
+    private var photoBanner: some View {
+        if let photo = aircraftPhoto {
+            AsyncImage(url: photo.largeURL) { phase in
+                switch phase {
+                case .success(let img):
+                    img.resizable().aspectRatio(contentMode: .fill)
+                case .empty, .failure:
+                    Rectangle().fill(FlightTheme.cardBackground)
+                @unknown default:
+                    Rectangle().fill(FlightTheme.cardBackground)
+                }
+            }
+            .frame(maxWidth: .infinity)
+            .frame(height: 200)
+            .clipped()
+        }
+    }
+
+    private func photoCredit(name: String, link: URL?) -> some View {
+        HStack(spacing: 4) {
+            Image(systemName: "camera.fill")
+                .font(.caption2)
+            Text("Photo by \(name) · planespotters.net")
+                .font(.caption2)
+        }
+        .foregroundStyle(FlightTheme.textTertiary)
+        .padding(.top, 4)
+        .contentShape(Rectangle())
+        .onTapGesture {
+            if let link { openURL(link) }
+        }
+    }
+
     // MARK: - Header
 
     private var header: some View {