Fix inventory window never refreshing live (per-character version)

The inventoryVersion counter in useLiveData was a single global value that
bumped on every inventory_delta for any character. With 60+ active chars
all generating deltas, the global counter advanced multiple times per
second.

InventoryWindow's debounce effect watched this global counter, so every
bump reset its 2-second fetch timer. Since bumps arrived faster than 2s,
the fetch never fired — the window appeared frozen until the user closed
and reopened it (which triggered the initial-fetch effect).

Fix: make inventoryVersions a Map<string, number> keyed by character name.
Each inventory_delta now only bumps its own character's counter, so an
open window's debounce correctly fires 2s after its character's last
delta, ignoring unrelated traffic.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/hooks/useLiveData.ts

@@ -14,7 +14,11 @@ export interface DashboardState {
   recentRares: RareMessage[];
   chatMessages: Map<string, Array<{ text: string; color?: number; timestamp: string }>>;
   nearbyObjects: Map<string, any>;
-  inventoryVersion: number;
+  /** Per-character inventory version counter — bumps when that character
+   * receives an inventory_delta. Open windows watch only their own
+   * character's counter so deltas for unrelated chars don't reset their
+   * debounce timer. */
+  inventoryVersions: Map<string, number>;
   equipmentCantrips: Map<string, any>;
   characterStats: Map<string, any>;
   deathAlerts: Array<{ character_name: string; vitae: number; timestamp: string }>;
@@ -29,7 +33,7 @@ export function useLiveData(): DashboardState {
   const [recentRares, setRecentRares] = useState<RareMessage[]>([]);
   const chatMessagesRef = useRef(new Map<string, Array<{ text: string; color?: number; timestamp: string }>>());
   const [chatVersion, setChatVersion] = useState(0);
-  const [inventoryVersion, setInventoryVersion] = useState(0);
+  const [inventoryVersions, setInventoryVersions] = useState<Map<string, number>>(new Map());
   const equipmentCantripRef = useRef(new Map<string, any>());
   const [equipCantripVersion, setEquipCantripVersion] = useState(0);
   const characterStatsRef = useRef(new Map<string, any>());
@@ -72,8 +76,17 @@ export function useLiveData(): DashboardState {
       setRecentRares(prev => [r, ...prev].slice(0, 50));
     } else if (msg.type === 'inventory_delta') {
       const d = msg as unknown as { character_name: string };
-      // Bump inventory version so open inventory windows can re-fetch
-      setInventoryVersion(v => v + 1);
+      // Bump ONLY this character's inventory version so an open window for
+      // that character re-fetches. Deltas for other characters don't touch
+      // it, which keeps the 2s debounce in InventoryWindow from being reset
+      // forever by unrelated chatter.
+      if (d.character_name) {
+        setInventoryVersions(prev => {
+          const next = new Map(prev);
+          next.set(d.character_name, (next.get(d.character_name) ?? 0) + 1);
+          return next;
+        });
+      }
     } else if (msg.type === 'character_stats') {
       // Store full character stats for CharacterWindow live updates
       const cs = msg as unknown as { character_name: string };
@@ -200,5 +213,5 @@ export function useLiveData(): DashboardState {
   // eslint-disable-next-line react-hooks/exhaustive-deps
   const characterStats = useMemo(() => characterStatsRef.current, [charStatsVersion]);
 
-  return { characters, serverHealth, totalRares, totalKills, recentRares, chatMessages, nearbyObjects, inventoryVersion, equipmentCantrips, characterStats, deathAlerts, socketRef };
+  return { characters, serverHealth, totalRares, totalKills, recentRares, chatMessages, nearbyObjects, inventoryVersions, equipmentCantrips, characterStats, deathAlerts, socketRef };
 }