feat: add Playwright configuration and initial e2e test for authentication

- Created Playwright configuration file to set up testing environment.
- Added a new e2e test for user authentication in login.spec.ts.
- Updated tsconfig.node.json to include playwright.config.ts.
- Enhanced vite.config.ts to include API proxying for backend integration.
- Added a placeholder for last run test results in .last-run.json.

frontend/package-lock.json

@@ -14,6 +14,7 @@
         "react-leaflet": "^4.2.1"
       },
       "devDependencies": {
+        "@playwright/test": "^1.48.0",
         "@types/leaflet": "^1.9.13",
         "@types/node": "^20.16.5",
         "@types/react": "^18.3.3",
@@ -972,6 +973,22 @@
         "node": ">= 8"
       }
     },
+    "node_modules/@playwright/test": {
+      "version": "1.56.0",
+      "resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.56.0.tgz",
+      "integrity": "sha512-Tzh95Twig7hUwwNe381/K3PggZBZblKUe2wv25oIpzWLr6Z0m4KgV1ZVIjnR6GM9ANEqjZD7XsZEa6JL/7YEgg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright": "1.56.0"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@react-leaflet/core": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/@react-leaflet/core/-/core-2.1.0.tgz",
@@ -4654,6 +4671,53 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
+    "node_modules/playwright": {
+      "version": "1.56.0",
+      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.56.0.tgz",
+      "integrity": "sha512-X5Q1b8lOdWIE4KAoHpW3SE8HvUB+ZZsUoN64ZhjnN8dOb1UpujxBtENGiZFE+9F/yhzJwYa+ca3u43FeLbboHA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright-core": "1.56.0"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.56.0",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.56.0.tgz",
+      "integrity": "sha512-1SXl7pMfemAMSDn5rkPeZljxOCYAmQnYLBTExuh6E8USHXGSX3dx6lYZN/xPpTz1vimXmPA9CDnILvmJaB8aSQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/playwright/node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/possible-typed-array-names": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/possible-typed-array-names/-/possible-typed-array-names-1.1.0.tgz",