build: Add diff package and types

Author: alvinveroy

package.json

@@ -51,6 +51,7 @@
     "@modelcontextprotocol/sdk": "^1.11.4",
     "@qdrant/js-client-rest": "^1.9.0",
     "@vitest/mocker": "^3.0.9",
+    "diff": "^5.2.0",
     "axios": "^1.9.0",
     "esbuild": "^0.25.4",
     "isomorphic-git": "^1.30.1",
@@ -64,6 +65,7 @@
   "devDependencies": {
     "@eslint/js": "^9.8.0",
     "@types/node": "^20.5.9",
+    "@types/diff": "^5.2.0",
     "@types/uuid": "^10.0.0",
     "eslint": "^9.8.0",
     "globals": "^15.8.0",