Fix lint errors, upgrade react-simple-maps to v5 (clears high vuln), My Notes: search other studies + Markdown download; v2.42.2

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

vite.config.ts

@@ -47,11 +47,6 @@ export default defineConfig({
       },
     }),
   ],
-  resolve: {
-    alias: {
-      'react-simple-maps': 'react-simple-maps/dist/index.es.js',
-    },
-  },
   server: {
     proxy: {
       '/api': 'http://localhost:4173',