iOS: Menge je Lagerort - Lagerort scannen + Einlagern ohne MHD

- Lagerort per QR scannen in Menge-hinzufuegen/entfernen/umlagern (Ziel), nicht
  nur ueber das Dropdown suchen.
- Beim Einlagern laufen "Menge je Lagerort"-Gegenstaende jetzt ueber die Mengen-
  Eingabe (ObjectAddSheet) statt durch den Charge-Weg mit MHD - Socken & Co.
  fragen kein MHD mehr ab.

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

ios/Sources/CheckInView.swift

@@ -137,11 +137,17 @@ struct CheckInView: View {
                     ItemAddSheet(productId: item.id, onDone: {
                         status = "\(item.name): Einzelstück(e) angelegt."
                     })
-                } else {
+                } else if item.foodLike {
+                    // Lebensmittel + Verbrauchsgegenstand: Charge mit Menge/MHD.
                     CheckInFormView(product: item, units: units, locations: locations) { message in
                         status = message
                         product = nil
                     }
+                } else {
+                    // Menge je Lagerort (Gegenstand): ohne MHD, direkt Menge + Lagerort.
+                    ObjectAddSheet(product: item, locations: locations,
+                                   einheit: item.unitName.isEmpty ? "Stück" : item.unitName,
+                                   perform: { status = "\(item.name): Menge eingelagert." })
                 }
             }
         }

ios/Sources/ObjectStockView.swift

@@ -193,11 +193,15 @@ struct ObjectAddSheet: View {
     @State private var quantity = ""
     @State private var busy = false
     @State private var error: String?
+    @State private var locScanShown = false
 
     var body: some View {
         Form {
             Section {
                 LocationPicker(title: "Lagerort", locations: locations, selection: $locationId)
+                Button { locScanShown = true } label: {
+                    Label("Lagerort scannen", systemImage: "qrcode.viewfinder")
+                }
                 QuantityField(label: "Menge", text: $quantity, suffix: einheit)
             }
             if let error { Section { Text(error).foregroundStyle(.red).font(.callout) } }
@@ -209,6 +213,10 @@ struct ObjectAddSheet: View {
         .navigationTitle("Menge hinzufügen")
         .navigationBarTitleDisplayMode(.inline)
         .toolbar { ToolbarItem(placement: .topBarLeading) { Button("Abbrechen") { dismiss() } } }
+        .fullScreenCover(isPresented: $locScanShown) {
+            LocationScannerView(locations: locations) { loc in locationId = loc.id }
+                .ignoresSafeArea()
+        }
     }
 
     private func save() async {
@@ -239,12 +247,16 @@ struct ObjectRelocateSheet: View {
     @State private var quantity = ""
     @State private var busy = false
     @State private var error: String?
+    @State private var locScanShown = false
 
     var body: some View {
         Form {
             Section {
                 LocationPicker(title: "Von", locations: locations, selection: $fromId)
                 LocationPicker(title: "Nach", locations: locations, selection: $toId)
+                Button { locScanShown = true } label: {
+                    Label("Ziel-Lagerort scannen", systemImage: "qrcode.viewfinder")
+                }
                 QuantityField(label: "Menge", text: $quantity, suffix: product.unitName)
             }
             if let error { Section { Text(error).foregroundStyle(.red).font(.callout) } }
@@ -255,6 +267,10 @@ struct ObjectRelocateSheet: View {
         .navigationTitle("Umlagern")
         .navigationBarTitleDisplayMode(.inline)
         .toolbar { ToolbarItem(placement: .topBarLeading) { Button("Abbrechen") { dismiss() } } }
+        .fullScreenCover(isPresented: $locScanShown) {
+            LocationScannerView(locations: locations) { loc in toId = loc.id }
+                .ignoresSafeArea()
+        }
         .onAppear { fromId = initialFrom }
     }
 
@@ -288,11 +304,15 @@ struct ObjectRemoveSheet: View {
     @State private var note = ""
     @State private var busy = false
     @State private var error: String?
+    @State private var locScanShown = false
 
     var body: some View {
         Form {
             Section {
                 LocationPicker(title: "Lagerort", locations: locations, selection: $locationId)
+                Button { locScanShown = true } label: {
+                    Label("Lagerort scannen", systemImage: "qrcode.viewfinder")
+                }
                 QuantityField(label: "Menge", text: $quantity, suffix: einheit)
                 Picker("Grund", selection: $reason) {
                     ForEach(RemovalReasons.all, id: \.value) { Text($0.label).tag($0.value) }
@@ -309,6 +329,10 @@ struct ObjectRemoveSheet: View {
         .navigationTitle("Aus Bestand entfernen")
         .navigationBarTitleDisplayMode(.inline)
         .toolbar { ToolbarItem(placement: .topBarLeading) { Button("Abbrechen") { dismiss() } } }
+        .fullScreenCover(isPresented: $locScanShown) {
+            LocationScannerView(locations: locations) { loc in locationId = loc.id }
+                .ignoresSafeArea()
+        }
         .onAppear { locationId = initialLoc }
     }