add testing suite

vitest.config.js

@@ -0,0 +1,29 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    exclude: ["**/node_modules/**", "**/integration/**", "**/integration.test.js"],
+    environment: "node",
+  },
+  coverage: {
+    provider: "v8",
+    reporter: ["text", "text-summary"],
+    include: [
+      "src/textUtils.js",
+      "src/parsing.js",
+      "src/validation.js",
+      "src/dungeonBuild.js",
+      "src/contentFixes.js",
+      "src/dungeonGenerator.js",
+      "src/dungeonTemplate.js",
+      "src/ollamaClient.js",
+    ],
+    exclude: ["test/**", "**/*.config.js", "index.js"],
+    thresholds: {
+      statements: 85,
+      branches: 85,
+      functions: 85,
+      lines: 85,
+    },
+  },
+});