fix(v2): remove nav links from dashboard header, move Map View button left

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

frontend/src/components/Layout.tsx

@@ -9,11 +9,6 @@ export const Layout: React.FC<Props> = ({ children }) => {
     <div className="dashboard">
       <header className="dashboard-header">
         <h1 className="dashboard-title">Mosswart Overlord</h1>
-        <nav className="dashboard-nav">
-          <a href="/" className="nav-link">Classic View</a>
-          <a href="/inventory.html" className="nav-link">Inventory</a>
-          <a href="/suitbuilder.html" className="nav-link">Suitbuilder</a>
-        </nav>
       </header>
       <main className="dashboard-main">
         {children}