Add dedicated explorer routes page

frontend/scripts/smoke-routes.mjs

@@ -7,6 +7,7 @@ const checks = [
   { path: '/addresses', expect: ['Open An Address', 'Recently Active Addresses', 'Saved Watchlist'] },
   { path: '/tokens', expect: ['Find A Token', 'Common token searches', 'Tokens'] },
   { path: '/pools', expect: ['Canonical PMM routes', 'Pool operation shortcuts', 'Pools'] },
+  { path: '/routes', expect: ['Live Route Decision Tree', 'Coverage sweep + priority route cards', 'Routes'] },
   { path: '/watchlist', expect: ['Saved Addresses', 'Watchlist', 'Export JSON'] },
   { path: '/search?q=cUSDT', expect: ['Search Results', 'Results for', 'Search'] },
   { path: '/blocks/1', expect: ['Loading block details', 'Block Details'] },