chore(dashboard): add elkjs, graphology, vitest

understand-anything-plugin/packages/dashboard/package.json

@@ -7,7 +7,9 @@
     "dev": "vite",
     "build": "tsc -b && vite build",
     "build:demo": "tsc -b && vite build --config vite.config.demo.ts",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "test": "vitest run",
+    "test:watch": "vitest"
   },
   "dependencies": {
     "@dagrejs/dagre": "^2.0.4",
@@ -15,6 +17,9 @@
     "@xyflow/react": "^12.0.0",
     "d3-force": "^3.0.0",
     "devlop": "^1.1.0",
+    "elkjs": "^0.9.3",
+    "graphology": "^0.25.4",
+    "graphology-communities-louvain": "^2.0.1",
     "hast-util-to-jsx-runtime": "^2.3.6",
     "prism-react-renderer": "^2.4.1",
     "react": "^19.0.0",
@@ -28,8 +33,10 @@
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
     "@vitejs/plugin-react": "^4.3.0",
+    "@vitest/coverage-v8": "^3.2.4",
     "tailwindcss": "^4.0.0",
     "typescript": "^5.7.0",
-    "vite": "^6.0.0"
+    "vite": "^6.0.0",
+    "vitest": "^3.1.0"
   }
 }

understand-anything-plugin/packages/dashboard/src/utils/__tests__/smoke.test.ts

@@ -0,0 +1,20 @@
+import { describe, it, expect } from "vitest";
+import ELK from "elkjs/lib/elk.bundled.js";
+import Graph from "graphology";
+import louvain from "graphology-communities-louvain";
+
+describe("dependency smoke test", () => {
+  it("imports elkjs", () => {
+    expect(typeof ELK).toBe("function");
+  });
+
+  it("imports graphology", () => {
+    const g = new Graph();
+    g.addNode("a");
+    expect(g.order).toBe(1);
+  });
+
+  it("imports graphology-communities-louvain", () => {
+    expect(typeof louvain).toBe("function");
+  });
+});

understand-anything-plugin/packages/dashboard/vite.config.ts

@@ -1,3 +1,4 @@
+/// <reference types="vitest" />
 import { defineConfig } from "vite";
 import react from "@vitejs/plugin-react";
 import tailwindcss from "@tailwindcss/vite";
@@ -176,6 +177,11 @@ function readSourceFile(url: URL) {
 }
 
 export default defineConfig({
+  test: {
+    environment: "node",
+    include: ["src/**/__tests__/**/*.test.ts"],
+  },
+
   // FIX 1 — bind only to localhost, not 0.0.0.0
   // This blocks access from any other device on the same LAN / WiFi.
   server: {