feat(auth): implement user authentication system

backend/node_modules/babel-preset-jest/package.json

@@ -0,0 +1,29 @@
+{
+  "name": "babel-preset-jest",
+  "version": "30.3.0",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/jestjs/jest.git",
+    "directory": "packages/babel-preset-jest"
+  },
+  "license": "MIT",
+  "main": "./index.js",
+  "exports": {
+    ".": "./index.js",
+    "./package.json": "./package.json"
+  },
+  "dependencies": {
+    "babel-plugin-jest-hoist": "30.3.0",
+    "babel-preset-current-node-syntax": "^1.2.0"
+  },
+  "peerDependencies": {
+    "@babel/core": "^7.11.0 || ^8.0.0-beta.1"
+  },
+  "engines": {
+    "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "gitHead": "efb59c2e81083f8dc941f20d6d20a3af2dc8d068"
+}