feat(shop): configurable package display rotation, pocoregal shelf model

Add _displayRotationEuler to Lieferkarton/ShelfSlot so package prefabs
with a non-upright export orientation can be corrected per-container
without touching PackageDisplay code. Fixes a bug where flying packages
landed with a different rotation than the resting shelf display
(PlayerCarry used the raw shelf transform instead of
ShelfSlot.GetSlotWorldRotation()).

Also adds the pocoregal shelf model (Blender export) and its materials,
places it in the Shop scene, registers ShelfSlot as a network prefab,
and rescales EmptyBox. See docs/PACKAGE_DISPLAY_SETUP.md for the
display-grid setup/troubleshooting reference.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

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Assets/Scripts/Networking/PlayerCarry.cs

@@ -128,7 +128,7 @@ namespace AfterHours.Networking
             Vector3 start = box.transform.position + Vector3.up * 0.3f;
             Vector3 end = shelf.GetSlotWorldPosition(landingIndex);
 
-            FlyingPackage.Spawn(prefab, start, end, shelf.transform.rotation, _flightDuration);
+            FlyingPackage.Spawn(prefab, start, end, shelf.GetSlotWorldRotation(), _flightDuration);
         }
     }
 }

Assets/Scripts/Shop/Lieferkarton.cs

@@ -29,6 +29,7 @@ namespace AfterHours.Shop
         [SerializeField] private int _displayColumns = 3;
         [SerializeField] private int _displayRows = 3;
         [SerializeField] private Vector3 _displaySpacing = new(0.12f, 0.1f, 0.12f);
+        [SerializeField] private Vector3 _displayRotationEuler = Vector3.zero;
 
         // Eine synchronisierte Variable, die den Zustand des Kartons speichert
         private NetworkVariable<bool> istOffen = new NetworkVariable<bool>(
@@ -60,7 +61,7 @@ namespace AfterHours.Shop
         private void Awake()
         {
             _carryable = GetComponent<Carryable>();
-            _packageDisplay = new PackageDisplay(_contentsRoot, _displayColumns, _displayRows, _displaySpacing);
+            _packageDisplay = new PackageDisplay(_contentsRoot, _displayColumns, _displayRows, _displaySpacing, _displayRotationEuler);
 
             // Start-Rotationen (Geschlossen) direkt beim Laden sichern
             if (deckelLinks != null) linksGeschlossen = deckelLinks.localRotation;

Assets/Scripts/Shop/PackageDisplay.cs

@@ -17,15 +17,17 @@ namespace AfterHours.Shop
         private readonly int _columns;
         private readonly int _rows;
         private readonly Vector3 _spacing;
+        private readonly Quaternion _rotation;
         private readonly List<GameObject> _instances = new();
         private GameObject _prefab;
 
-        public PackageDisplay(Transform root, int columns, int rows, Vector3 spacing)
+        public PackageDisplay(Transform root, int columns, int rows, Vector3 spacing, Vector3 rotationEuler = default)
         {
             _root = root;
             _columns = Mathf.Max(1, columns);
             _rows = Mathf.Max(1, rows);
             _spacing = spacing;
+            _rotation = Quaternion.Euler(rotationEuler);
         }
 
         /// <summary>Baut die Anzeige auf <paramref name="count"/> Instanzen an (gedeckelt bei maxVisible).</summary>
@@ -47,7 +49,7 @@ namespace AfterHours.Shop
             {
                 var instance = Object.Instantiate(_prefab, _root);
                 instance.transform.localPosition = SlotLocalPosition(_instances.Count);
-                instance.transform.localRotation = Quaternion.identity;
+                instance.transform.localRotation = _rotation;
                 _instances.Add(instance);
             }
 

Assets/Scripts/Shop/ShelfSlot.cs

@@ -24,6 +24,7 @@ namespace AfterHours.Shop
         [SerializeField] private int _displayColumns = 4;
         [SerializeField] private int _displayRows = 3;
         [SerializeField] private Vector3 _displaySpacing = new(0.1f, 0.1f, 0.1f);
+        [SerializeField] private Vector3 _displayRotationEuler = Vector3.zero;
 
         private readonly NetworkVariable<int> _productId = new(-1);
         private readonly NetworkVariable<int> _quantity = new(0);
@@ -41,7 +42,7 @@ namespace AfterHours.Shop
 
         private PackageDisplay _packageDisplay;
 
-        private void Awake() => _packageDisplay = new PackageDisplay(_displayRoot, _displayColumns, _displayRows, _displaySpacing);
+        private void Awake() => _packageDisplay = new PackageDisplay(_displayRoot, _displayColumns, _displayRows, _displaySpacing, _displayRotationEuler);
 
         /// <summary>Weltposition des Rasterplatzes mit gegebenem Index – Ziel fürs Flug-Visual (siehe PlayerCarry).</summary>
         public Vector3 GetSlotWorldPosition(int index)
@@ -49,6 +50,13 @@ namespace AfterHours.Shop
             return _displayRoot != null ? _displayRoot.TransformPoint(_packageDisplay.SlotLocalPosition(index)) : transform.position;
         }
 
+        /// <summary>Endrotation eines Pakets im Regal – muss zur ruhenden Anzeige passen, siehe PlayerCarry.</summary>
+        public Quaternion GetSlotWorldRotation()
+        {
+            Quaternion baseRotation = _displayRoot != null ? _displayRoot.rotation : transform.rotation;
+            return baseRotation * Quaternion.Euler(_displayRotationEuler);
+        }
+
         public override void OnNetworkSpawn()
         {
             _quantity.OnValueChanged += (_, _) => RefreshVisuals();

docs/PACKAGE_DISPLAY_SETUP.md

@@ -0,0 +1,108 @@
+# Package-Anzeige einrichten (Karton & Regalfach)
+
+Wie man `PackageDisplay` (Karton-Inhalt, Regal-Bestand) so einstellt, dass
+Verpackungen sauber ausgerichtet und ohne Überlappen im Raster liegen.
+Betrifft `Lieferkarton.cs` und `ShelfSlot.cs` — beide haben dieselben vier
+Inspector-Felder unter „Anzeige-Raster".
+
+## Kurzfassung: ja, das ist alles konfigurierbar
+
+Kein Code nötig. Vier Felder pro Objekt:
+
+| Feld                    | Bedeutung                                                   |
+|--------------------------|--------------------------------------------------------------|
+| `_displayColumns`        | Päckchen pro Reihe (X-Achse im lokalen Raum)                |
+| `_displayRows`            | Reihen pro Lage (Z-Achse), bevor eine neue Lage nach oben beginnt |
+| `_displaySpacing`         | Abstand zwischen Päckchen-Mittelpunkten (X/Y/Z in Metern)    |
+| `_displayRotationEuler`   | Zusätzliche Rotation (Grad), mit der jedes Päckchen platziert wird |
+
+Die Formel dahinter (`PackageDisplay.SlotLocalPosition`):
+
+```
+Lage  = Index / (Spalten × Reihen)
+Rest  = Index % (Spalten × Reihen)
+Reihe = Rest / Spalten
+Spalte= Rest % Spalten
+
+Position = (Spalte × spacing.x, Lage × spacing.y, Reihe × spacing.z)
+```
+
+## Warum die Päckchen "komisch" aussehen
+
+Zwei typische Ursachen — beide liegen am **Prefab selbst**, nicht am Raster-Code:
+
+### 1. Falscher Pivot (Ursprung) im Prefab
+
+`PackageDisplay` setzt `transform.localPosition` direkt auf die berechnete
+Rasterposition — **bezogen auf den Ursprung (Pivot) des Prefabs**, nicht auf
+seine sichtbare Bounding Box. Sitzt der Pivot z. B. an einer Ecke statt im
+Zentrum/am Boden-Mittelpunkt der Verpackung, wirkt die Platzierung „verschoben"
+oder die Päckchen scheinen im Boden zu versinken bzw. zu schweben.
+
+**Fix:** Pivot des `PackagePrefab` im 3D-Tool (Blender) auf den Boden-
+Mittelpunkt setzen, bevor es exportiert/als Prefab gebaut wird. Faustregel:
+wenn's wie eine Kiste auf dem Boden stehen soll, Pivot unten-mittig; wenn's im
+Regal frei "schwebend zentriert" wirken soll, Pivot im geometrischen Zentrum.
+
+### 2. Falsche Grundausrichtung im Prefab
+
+Bisher wurde jedes Päckchen mit `Quaternion.identity` platziert — also exakt
+so gedreht, wie es importiert wurde. Wurde das Modell in Blender nicht
+"aufrecht" (Unity: +Y = oben, +Z = vorne) exportiert, liegen die Päckchen im
+Raster auf der Seite oder verdreht.
+
+**Fix jetzt eingebaut:** `_displayRotationEuler` gleicht das aus, ohne das
+Modell neu exportieren zu müssen. Einfach im Inspector die nötige Korrektur
+eintragen (z. B. `(-90, 0, 0)`, falls das Modell "liegend" exportiert wurde
+und eigentlich aufrecht stehen sollte) — Werte am besten per Trial-and-Error
+im Play-Mode justieren, man sieht die Wirkung sofort.
+
+## Spacing & Größe aufeinander abstimmen
+
+`_displaySpacing` ist der Abstand zwischen den **Mittelpunkten** benachbarter
+Päckchen, keine automatische Kollisionsvermeidung. Zu klein → Päckchen
+überlappen sich sichtbar. Zu groß → unnötige Lücken, und es passen weniger
+rein als gedacht.
+
+So ermittelst du einen guten Wert:
+
+1. Das `PackagePrefab` per Drag&Drop in eine leere Szene ziehen (oder im
+   Project-Fenster anklicken und die Bounds im Scene-View-Gizmo ablesen).
+2. Größte Kantenlänge in Metern ablesen (Unity: 1 Unit = 1 Meter).
+3. `_displaySpacing` je Achse auf **Kantenlänge × ca. 1,1–1,3** setzen (kleiner
+   Puffer gegen Berührung/Z-Fighting).
+
+Beispiel: Päckchen ist 0,08 m breit/tief, 0,12 m hoch →
+`_displaySpacing ≈ (0.10, 0.14, 0.10)`.
+
+## Spalten/Reihen an die Behälter-Größe anpassen
+
+- **Lieferkarton**: `_displayColumns`/`_displayRows` grob an die
+  Innenmaße des Kartons anpassen (Spalten × Reihen × Spacing sollte nicht
+  größer sein als die Kartonöffnung — sonst "schwebt" ein Teil der Päckchen
+  sichtbar über dem Kartonrand).
+- **ShelfSlot**: analog zur `_capacityUnits`/Fachbreite. Aktuell Default
+  4×3 = 12 Plätze pro Lage, passend zur Standard-`_capacityUnits: 12` bei
+  `ShelfSize.Small`. Bei größeren Produkten (`Medium`/`Large`, siehe
+  `ProductDefinition.ShelfSize`) verringert sich die effektive Kapazität
+  automatisch (`ShelfSlot.Capacity()`) — Raster-Werte ggf. mit anpassen,
+  damit die sichtbare Anzeige zur tatsächlichen Kapazität passt.
+
+## Troubleshooting
+
+| Symptom                                   | Wahrscheinliche Ursache                    | Fix |
+|--------------------------------------------|---------------------------------------------|-----|
+| Päckchen liegen auf der Seite / verdreht    | Prefab-Grundausrichtung falsch              | `_displayRotationEuler` justieren |
+| Päckchen schweben über/versinken im Boden   | Pivot des Prefabs nicht am Boden-Mittelpunkt| Pivot in Blender korrigieren, oder `_displaySpacing.y`/Lagenhöhe grob kompensieren |
+| Päckchen überlappen sich sichtbar           | `_displaySpacing` kleiner als Prefab-Größe  | Spacing erhöhen (siehe Formel oben) |
+| Zu viele/wenige Päckchen sichtbar           | `_maxVisiblePackages` (Karton) bzw. `Capacity()` (Regal) vs. Raster-Kapazität passen nicht zusammen | `_displayColumns × _displayRows` an tatsächliche Kapazität anpassen |
+| Fliegendes Päckchen landet anders gedreht als die ruhenden im Regal | War bis eben ein Bug (Flug nutzte rohe Transform-Rotation statt `_displayRotationEuler`) | Bereits gefixt: `ShelfSlot.GetSlotWorldRotation()` berücksichtigt jetzt beide |
+
+## Kurz zusammengefasst
+
+Keine der Zahlen ist "fest verdrahtet" — alle vier Felder sind Inspector-
+Werte, extra dafür da, unterschiedliche Produkt-Prefabs ohne Code-Änderung
+einzupassen. Der eigentliche Hebel für "richtig ausgerichtet" ist aber meist
+der Pivot/die Grundrotation des Prefabs selbst — das Raster kann nur die
+*Anordnung*, nicht die *Modellierung* korrigieren (außer über
+`_displayRotationEuler` als Ausgleich).