Add quantity field for all items

module/applications/sheets/character-sheet.mjs

@@ -30,6 +30,8 @@ export default class PrismRPGCharacterSheet extends PrismRPGActorSheet {
       hpTempMinus: PrismRPGCharacterSheet.#onHpTempMinus,
       postItemToChat: PrismRPGCharacterSheet.#onPostItemToChat,
       useConsumable: PrismRPGCharacterSheet.#onUseConsumable,
+      quantityPlus: PrismRPGCharacterSheet.#onQuantityPlus,
+      quantityMinus: PrismRPGCharacterSheet.#onQuantityMinus,
       toggleContainerEquipped: PrismRPGCharacterSheet.#onToggleContainerEquipped,
       toggleEquipped: PrismRPGCharacterSheet.#onToggleEquipped,
       assignToContainer: PrismRPGCharacterSheet.#onAssignToContainer,
@@ -129,7 +131,7 @@ export default class PrismRPGCharacterSheet extends PrismRPGActorSheet {
         ]
         const burdenEquipped = equippableTypes
           .filter(i => i.system.equipped)
-          .reduce((sum, i) => sum + (i.system.encLoad ?? 0), 0)
+          .reduce((sum, i) => sum + (i.system.encLoad ?? 0) * (i.system.quantity ?? 1), 0)
         context.burdenUsed = burdenEquipped
         // Excess equipped burden reduces Movement Rating
         const excessBurden = Math.max(0, burdenEquipped - context.burdenMax)
@@ -202,7 +204,7 @@ export default class PrismRPGCharacterSheet extends PrismRPGActorSheet {
         // Pack burden = items stored in an existing container
         context.packBurdenUsed = allStorable
           .filter(i => i.system.containerId && containerGroups[i.system.containerId])
-          .reduce((sum, i) => sum + (i.system.encLoad ?? 0), 0)
+          .reduce((sum, i) => sum + (i.system.encLoad ?? 0) * (i.system.quantity ?? 1), 0)
         break
       case "biography":
         context.tab = context.tabs.biography
@@ -365,6 +367,31 @@ export default class PrismRPGCharacterSheet extends PrismRPGActorSheet {
     await item.update({ "system.equipped": !item.system.equipped })
   }
 
+  static async #onQuantityPlus(event, target) {
+    const itemElement = target.closest("[data-item-id]")
+    if (!itemElement) return
+    const item = this.document.items.get(itemElement.dataset.itemId)
+    if (!item) return
+    await item.update({ "system.quantity": (item.system.quantity ?? 1) + 1 })
+  }
+
+  static async #onQuantityMinus(event, target) {
+    const itemElement = target.closest("[data-item-id]")
+    if (!itemElement) return
+    const item = this.document.items.get(itemElement.dataset.itemId)
+    if (!item) return
+    const newQty = (item.system.quantity ?? 1) - 1
+    if (newQty < 1) {
+      const confirmed = await foundry.applications.api.DialogV2.confirm({
+        window: { title: game.i18n.localize("PRISMRPG.Dialog.deleteItem") },
+        content: `<p>${game.i18n.format("PRISMRPG.Dialog.deleteItemContent", { name: item.name })}</p>`,
+      })
+      if (confirmed) await item.delete()
+      return
+    }
+    await item.update({ "system.quantity": newQty })
+  }
+
   static async #onAssignToContainer(event, target) {
     const itemElement = target.closest("[data-item-id]")
     if (!itemElement) return