feat: destaca dados mockados e WIP no app

src/components/AppShell.jsx

@@ -1,6 +1,7 @@
 import { useMemo, useState } from 'react'
 
 import { BrandLogo } from './Brand.jsx'
+import { FeatureLegend } from './FeatureState.jsx'
 
 const navItems = [
   { href: '/inicio', label: 'Painel', icon: 'pulse', activePaths: ['/inicio', '/home', '/dashboard'] },
@@ -176,6 +177,9 @@ export function AppShell({ children, currentPath, navigate, routeTitle }) {
         </header>
 
         <main className="w-full px-4 py-6 md:px-8 md:py-8" id="app-content">
+          <div className="mb-6">
+            <FeatureLegend />
+          </div>
           <div className="sr-only" aria-live="polite">
             {pageTitle}
           </div>