iOS: "Nachschlagen"-Scan (nur ansehen)

Neue Kachel im Scannen-Tab: Barcode -> Artikel, Einzelstueck-QR -> genau das
Stueck (Kaufdatum, Garantie, Ort ...), rein lesend ohne Ein-/Auslagern. Praktisch
mit Einzelstuecken, um schnell nachzuschauen, welches Exemplar man in der Hand
haelt.

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

ios/Sources/LookupScanView.swift

@@ -0,0 +1,76 @@
+import SwiftUI
+
+/// Nur ansehen: Barcode → Artikel, Einzelstück-QR → genau dieses Stück.
+/// Kein Ein-/Auslagern – zum schnellen Nachschauen (z.B. wann gekauft, Garantie).
+struct LookupScanView: View {
+    @Environment(\.dismiss) private var dismiss
+    @EnvironmentObject private var display: DisplaySettings
+
+    @State private var paused = false
+    @State private var torchOn = false
+    @State private var error: String?
+    @State private var item: Item?
+    @State private var product: Product?
+
+    var body: some View {
+        ScrollView {
+            VStack(spacing: 14) {
+                ScannerView(onCode: { code in Task { await resolve(code) } },
+                            isPaused: $paused, torchOn: $torchOn)
+                    .aspectRatio(4.0 / 3.0, contentMode: .fit)
+                    .clipShape(RoundedRectangle(cornerRadius: 16))
+                    .padding(.horizontal)
+
+                Text("Barcode oder Einzelstück-QR scannen – nur ansehen")
+                    .font(.caption).foregroundStyle(.secondary)
+
+                if let error {
+                    Text(error).font(.callout).foregroundStyle(.red)
+                        .frame(maxWidth: .infinity, alignment: .leading)
+                        .padding(.horizontal)
+                }
+            }
+            .padding(.vertical)
+        }
+        .navigationTitle("Nachschlagen")
+        .navigationBarTitleDisplayMode(.inline)
+        .toolbar {
+            ToolbarItem(placement: .topBarLeading) { Button("Fertig") { dismiss() } }
+            ToolbarItem(placement: .topBarTrailing) { TorchButton(isOn: $torchOn) }
+        }
+        .sheet(item: $item, onDismiss: { paused = false }) { it in
+            NavigationStack { ItemEditView(item: it) }
+        }
+        .sheet(item: $product, onDismiss: { paused = false }) { p in
+            NavigationStack { ProductDetailView(product: p) }
+                .environmentObject(display)
+        }
+    }
+
+    private func resolve(_ code: String) async {
+        paused = true
+        error = nil
+        // Einzelstück-QR (…/i/<UID>)?
+        if let r = code.range(of: "/i/") {
+            let uid = String(code[r.upperBound...])
+                .trimmingCharacters(in: CharacterSet(charactersIn: "/ ")).uppercased()
+            if !uid.isEmpty, let found = try? await APIClient.shared.itemByUid(uid: uid) {
+                item = found
+                return
+            }
+        }
+        // Sonst als Barcode auflösen.
+        do {
+            let result = try await APIClient.shared.lookup(barcode: code)
+            if let existing = result.existingProduct {
+                product = existing
+            } else {
+                error = "Nicht im Katalog: \(code)"
+                paused = false
+            }
+        } catch {
+            self.error = error.localizedDescription
+            paused = false
+        }
+    }
+}

ios/Sources/RootView.swift

@@ -29,6 +29,7 @@ struct RootView: View {
                 switch route {
                 case .checkin: CheckInView()
                 case .checkout: CheckOutView()
+                case .lookup: LookupScanView()
                 case .expiring:
                     ExpiringView()
                         .toolbar {
@@ -93,6 +94,13 @@ struct ScanTabView: View {
                     ActionTile(title: "Auslagern", subtitle: "Barcode scannen und Menge entnehmen",
                                systemImage: "arrow.up.to.line")
                 }
+                Button {
+                    router.route = .lookup
+                } label: {
+                    ActionTile(title: "Nachschlagen",
+                               subtitle: "Barcode/QR scannen und nur ansehen",
+                               systemImage: "doc.text.magnifyingglass")
+                }
                 // Ohne Barcode: gerade bei Gegenstaenden (Kleidung, Werkzeug) gibt
                 // es keinen Code zum Scannen. Deshalb hier ein offensichtlicher Weg.
                 if session.isAdmin {

ios/Sources/VorraniaApp.swift

@@ -9,6 +9,7 @@ enum Route: String {
     case checkin
     case checkout
     case expiring
+    case lookup
 }
 
 final class Router: ObservableObject {

ios/Vorrania.xcodeproj/project.pbxproj

@@ -33,6 +33,7 @@
 		9B0A1A7C19764857BDC6ED26 /* RootView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4741D0E95875919C921945CF /* RootView.swift */; };
 		A7017E6C0532A650439AED7B /* BestBeforeText.swift in Sources */ = {isa = PBXBuildFile; fileRef = AA022A27118BEEEC5912ECDC /* BestBeforeText.swift */; };
 		AAF27320D2A67C994C29C26F /* ProductDetailView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6F574168AA0F849D46C384EE /* ProductDetailView.swift */; };
+		B531EEDAFAF442B1E86A9931 /* LookupScanView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 18F22598772AD8B5EB6394F8 /* LookupScanView.swift */; };
 		D70CB183C868FF0143A6A5E7 /* DisplaySettings.swift in Sources */ = {isa = PBXBuildFile; fileRef = AAC97A555856C6C5DD353E25 /* DisplaySettings.swift */; };
 		D7717F44D2CDB75DC2693B59 /* ObjectStockView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7B5BB49FBEFF88768B0BC902 /* ObjectStockView.swift */; };
 		DFA55EF4ACA34537F445E998 /* Session.swift in Sources */ = {isa = PBXBuildFile; fileRef = AD2F9406BD0D4F0D30FED345 /* Session.swift */; };
@@ -50,6 +51,7 @@
 		121D44B9990DA931A9CD5847 /* ServerProfiles.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ServerProfiles.swift; sourceTree = "<group>"; };
 		163F5DCB00387215F0EA1F21 /* NotificationScheduler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationScheduler.swift; sourceTree = "<group>"; };
 		1847E65D41ACEDD01CD108BC /* ServerFetch.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ServerFetch.swift; sourceTree = "<group>"; };
+		18F22598772AD8B5EB6394F8 /* LookupScanView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LookupScanView.swift; sourceTree = "<group>"; };
 		1E86178BB91DBB86ADFB284B /* MasterDataViews.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MasterDataViews.swift; sourceTree = "<group>"; };
 		314B1BB7220691A7423E8929 /* Models.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Models.swift; sourceTree = "<group>"; };
 		369B9841E43E727ACA2E2A2A /* ProductViews.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ProductViews.swift; sourceTree = "<group>"; };
@@ -102,6 +104,7 @@
 				A6785CD9174067EFBB2B9043 /* ListViews.swift */,
 				C35D34107C8CBB8B7C6C6650 /* LocalOverview.swift */,
 				A75926511854BB8EE316ED3A /* LoginView.swift */,
+				18F22598772AD8B5EB6394F8 /* LookupScanView.swift */,
 				1E86178BB91DBB86ADFB284B /* MasterDataViews.swift */,
 				314B1BB7220691A7423E8929 /* Models.swift */,
 				163F5DCB00387215F0EA1F21 /* NotificationScheduler.swift */,
@@ -227,6 +230,7 @@
 				7738E209D4D32BFD514B76F5 /* ListViews.swift in Sources */,
 				82A0C22D4AD228C36868853A /* LocalOverview.swift in Sources */,
 				E9EA455CACB6ED5951B114C3 /* LoginView.swift in Sources */,
+				B531EEDAFAF442B1E86A9931 /* LookupScanView.swift in Sources */,
 				96E5A2455B2EC26050E69232 /* MasterDataViews.swift in Sources */,
 				6816C33381DF52A96E5BB303 /* Models.swift in Sources */,
 				38133EE3EC920B462BDAA29F /* NotificationScheduler.swift in Sources */,