feat(visualizer): improve chart interactions

- Rename Drift → Trade in UI\n- Dynamic price precision for low prices\n- Fib retracement: select + move in X+Y\n- Ctrl+wheel vertical zoom, Ctrl+drag vertical pan\n- Auto Scale toggle for price scale

apps/visualizer/src/layout/TopNav.tsx

@@ -16,16 +16,15 @@ type Props = {
   active?: NavId;
   onSelect?: (id: NavId) => void;
   rightSlot?: ReactNode;
-  rightEndSlot?: ReactNode;
 };
 
-export default function TopNav({ active = 'trade', onSelect, rightSlot, rightEndSlot }: Props) {
+export default function TopNav({ active = 'trade', onSelect, rightSlot }: Props) {
   return (
     <header className="topNav">
       <div className="topNav__left">
-        <div className="topNav__brand" aria-label="Drift">
+        <div className="topNav__brand" aria-label="Trade">
           <div className="topNav__brandMark" aria-hidden="true" />
-          <div className="topNav__brandName">Drift</div>
+          <div className="topNav__brandName">Trade</div>
         </div>
         <nav className="topNav__menu" aria-label="Primary">
           {navItems.map((it) => (
@@ -56,7 +55,6 @@ export default function TopNav({ active = 'trade', onSelect, rightSlot, rightEnd
             </div>
           </>
         )}
-        {rightEndSlot}
       </div>
     </header>
   );