fix: clear persona links and use esm vitest config

vitest.config.ts

@@ -1,18 +0,0 @@
-import { defineConfig } from "vitest/config"
-import path from "path"
-
-export default defineConfig({
-  resolve: {
-    alias: {
-      "@": path.resolve(__dirname, "./src"),
-      "@/convex": path.resolve(__dirname, "./convex"),
-    },
-  },
-  test: {
-    environment: "node",
-    globals: true,
-    include: ["src/**/*.test.ts", "tests/**/*.test.ts"],
-    setupFiles: ["./vitest.setup.ts"],
-    testTimeout: 15000,
-  },
-})