Revert floating badge, remove debug logs

The floating version badge scrolled awkwardly and wasn't necessary
now that the bind-mount/deploy issue is fixed. The existing ml-version
inside the Sidebar is sufficient.

Also removed the temporary [INV_DEBUG] console logs from useLiveData
and InventoryWindow — the inventory live-update bug is confirmed fixed.
Kept the per-character inventoryVersions fix and the cache-buster on
the refetch URL.

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

frontend/src/components/map/MapLayout.tsx

@@ -71,7 +71,6 @@ export const MapLayout: React.FC<Props> = ({ data }) => {
           socket={data.socketRef.current} />
         <RareNotification recentRares={data.recentRares} />
         <DeathNotification deathAlerts={data.deathAlerts} />
-        {version && <div className="ml-version-badge">v{version}</div>}
       </div>
     </WindowManagerProvider>
   );