feat: add web testing foundation with infra-backed suites (#349)

* feat: add web test framework with infra-backed suites

* fix: honor DATABASE_URL env in integration prepare script

* fix: apply web test review feedback

* fix: streamline web test infra lifecycle and workflow scope

apps/web/vitest.config.ts

@@ -0,0 +1,28 @@
+import { defineConfig } from "vitest/config";
+import tsconfigPaths from "vite-tsconfig-paths";
+
+export default defineConfig({
+  plugins: [tsconfigPaths()],
+  test: {
+    environment: "node",
+    globals: true,
+    setupFiles: [
+      "./src/test/setup/setup-env.ts",
+      "./src/test/setup/setup-tests.ts",
+    ],
+    clearMocks: true,
+    restoreMocks: true,
+    mockReset: true,
+    coverage: {
+      provider: "v8",
+      reporter: ["text", "html"],
+      include: ["src/**/*.{ts,tsx}"],
+      exclude: [
+        "src/**/*.test.{ts,tsx}",
+        "src/**/*.spec.{ts,tsx}",
+        "src/test/**",
+        "src/env.js",
+      ],
+    },
+  },
+});