feat(storage): expose storedOccupancyId on shelf slot enrichment

Enable web-admin batch outbound to call existing remove occupancy API per selected cell.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/crud/storage_occupancy.py

@@ -282,7 +282,7 @@ def enrich_slots_with_stored_cell_products(
     tenant_no: str,
     slots: List[Dict[str, Any]],
 ) -> List[Dict[str, Any]]:
-    """为占用格附带在库物品摘要（名称/类型），供库位货架展示。"""
+    """为占用格附带在库占用 id 与物品摘要（名称/类型），供库位货架展示与批量出库。"""
     slot_ids = [s.get("id") for s in slots if int(s.get("occupiedCount") or 0) > 0 and s.get("id")]
     if not slot_ids:
         return slots
@@ -307,6 +307,7 @@ def enrich_slots_with_stored_cell_products(
         occ = occ_by_slot.get(slot.get("id"))
         if not occ:
             continue
+        slot["storedOccupancyId"] = occ.id
         slot["storedItemType"] = occ.item_type or ""
         slot["storedItemCode"] = occ.item_code or ""
         slot["storedItemName"] = occ.item_name or ""