feat(session): apply FurnitureDataReload delta + reload-hint (separate path)

packages/session/src/furniture/applyFurnidataDelta.ts

@@ -0,0 +1,43 @@
+import type { FurnidataDeltaEntry } from '@nitrots/communication';
+
+/**
+ * Pure, testable furnidata-delta patcher. Mutates the FurnitureData objects in
+ * the given maps (by id) and the localization keys, then dispatches the
+ * `nitro-localization-updated` window event so subscribed React surfaces refresh.
+ */
+export function applyFurnidataDeltaTo(
+    entries: FurnidataDeltaEntry[],
+    floorItems: Map<number, any>,
+    wallItems: Map<number, any>,
+    localization: { setValue: (key: string, value: string) => void },
+    win: { dispatchEvent: (event: any) => void }
+): void
+{
+    if(!entries || !entries.length) return;
+
+    for(const e of entries)
+    {
+        if(e.type === 'I')
+        {
+            const wall = wallItems.get(e.id);
+            if(wall) { wall._localizedName = e.name; wall._description = e.description; }
+            localization.setValue('wallItem.name.' + e.id, e.name);
+            localization.setValue('wallItem.desc.' + e.id, e.description);
+        }
+        else
+        {
+            const floor = floorItems.get(e.id);
+            if(floor) { floor._localizedName = e.name; floor._description = e.description; }
+            localization.setValue('roomItem.name.' + e.id, e.name);
+            localization.setValue('roomItem.desc.' + e.id, e.description);
+        }
+    }
+
+    if(win && typeof win.dispatchEvent === 'function')
+    {
+        const evt = (typeof CustomEvent !== 'undefined')
+            ? new CustomEvent('nitro-localization-updated')
+            : { type: 'nitro-localization-updated' } as any;
+        win.dispatchEvent(evt);
+    }
+}