Universal Links: gescannter Einzelstück-Link öffnet die App

Server liefert /.well-known/apple-app-site-association (nur /i/* beansprucht;
/l/* bleibt im Browser). iOS: Associated-Domains-Entitlement, Universal Link
(https://…/i/<UID>) wird abgefangen (onContinueUserActivity) und öffnet das
Einzelstück direkt.

Hinweis: Damit das Signieren durchläuft, muss die Capability "Associated
Domains" einmalig im Apple-Developer-Portal für die App-ID aktiv sein.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

ios/Sources/RootView.swift

@@ -4,6 +4,8 @@ struct RootView: View {
     @EnvironmentObject private var session: Session
     @EnvironmentObject private var router: Router
     @EnvironmentObject private var display: DisplaySettings
+    /// Über einen gescannten Universal Link geöffnetes Einzelstück.
+    @State private var linkedItem: Item?
 
     var body: some View {
         Group {
@@ -41,6 +43,14 @@ struct RootView: View {
                 }
             }
         }
+        .task(id: router.openItemUid) {
+            guard let uid = router.openItemUid else { return }
+            linkedItem = try? await APIClient.shared.itemByUid(uid: uid)
+            router.openItemUid = nil
+        }
+        .sheet(item: $linkedItem) { it in
+            NavigationStack { ItemEditView(item: it) }
+        }
     }
 }
 

ios/Sources/Vorrania.entitlements

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.developer.associated-domains</key>
+	<array>
+		<string>applinks:vorrania-ch.scarriffle.com</string>
+	</array>
+</dict>
+</plist>

ios/Sources/VorraniaApp.swift

@@ -15,6 +15,8 @@ enum Route: String {
 
 final class Router: ObservableObject {
     @Published var route: Route?
+    /// Über einen Universal Link (…/i/<UID>) zu öffnendes Einzelstück.
+    @Published var openItemUid: String?
 
     func handle(shortcut type: String) {
         if type.hasSuffix("checkin") { route = .checkin }
@@ -28,11 +30,18 @@ final class Router: ObservableObject {
         route = .expiring
     }
 
-    /// vorrania://checkin bzw. vorrania://checkout
+    /// vorrania://checkin bzw. vorrania://checkout – oder ein Universal Link
+    /// (https://…/i/<UID>), der das Einzelstück direkt öffnet.
     func handle(url: URL) {
-        guard url.scheme == "vorrania" else { return }
-        let target = (url.host ?? url.path.replacingOccurrences(of: "/", with: "")).lowercased()
-        if let route = Route(rawValue: target) { self.route = route }
+        if url.scheme == "vorrania" {
+            let target = (url.host ?? url.path.replacingOccurrences(of: "/", with: "")).lowercased()
+            if let route = Route(rawValue: target) { self.route = route }
+            return
+        }
+        let parts = url.pathComponents  // z.B. ["/", "i", "ABC123"]
+        if let idx = parts.firstIndex(of: "i"), idx + 1 < parts.count {
+            openItemUid = parts[idx + 1].uppercased()
+        }
     }
 }
 
@@ -51,6 +60,9 @@ struct VorraniaApp: App {
                 .environmentObject(router)
                 .environmentObject(display)
                 .onOpenURL { router.handle(url: $0) }
+                .onContinueUserActivity(NSUserActivityTypeBrowsingWeb) { activity in
+                    if let url = activity.webpageURL { router.handle(url: url) }
+                }
                 .onAppear {
                     if let type = AppDelegate.pendingShortcut {
                         router.handle(shortcut: type)