Exclude Playwright e2e tests from Vitest runner

Vitest was collecting e2e/*.spec.ts files that use Playwright's test API,
causing 3 suite failures. Adding test.exclude for the e2e directory fixes this.

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

Author: JamesonRGrieve

vite.config.ts

@@ -4,6 +4,9 @@ import vue from '@vitejs/plugin-vue'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [vue()],
+  test: {
+    exclude: ['e2e/**', 'node_modules/**'],
+  },
   server: {
     proxy: {
       '/predict': 'http://localhost:8080/',