Add TypeScript configuration for Playwright tests

Add proper TypeScript setup with tsconfig.json and type definitions
to resolve type errors in the e2e test files.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

tests/package-lock.json

@@ -9,7 +9,9 @@
       "version": "1.0.0",
       "devDependencies": {
         "@playwright/test": "^1.40.0",
-        "serve": "^14.2.0"
+        "@types/node": "^24.10.1",
+        "serve": "^14.2.0",
+        "typescript": "^5.9.3"
       }
     },
     "node_modules/@playwright/test": {
@@ -28,6 +30,16 @@
         "node": ">=18"
       }
     },
+    "node_modules/@types/node": {
+      "version": "24.10.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.10.1.tgz",
+      "integrity": "sha512-GNWcUTRBgIRJD5zj+Tq0fKOJ5XZajIiBroOF0yvj2bSU1WvNdYS/dn9UxwsujGW4JX06dnHyjV2y9rRaybH0iQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~7.16.0"
+      }
+    },
     "node_modules/@zeit/schemas": {
       "version": "2.36.0",
       "resolved": "https://registry.npmjs.org/@zeit/schemas/-/schemas-2.36.0.tgz",
@@ -1039,6 +1051,27 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/typescript": {
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
+    "node_modules/undici-types": {
+      "version": "7.16.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
+      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/update-check": {
       "version": "1.5.4",
       "resolved": "https://registry.npmjs.org/update-check/-/update-check-1.5.4.tgz",

tests/package.json

@@ -11,6 +11,8 @@
   },
   "devDependencies": {
     "@playwright/test": "^1.40.0",
-    "serve": "^14.2.0"
+    "@types/node": "^24.10.1",
+    "serve": "^14.2.0",
+    "typescript": "^5.9.3"
   }
 }

tests/tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "commonjs",
+    "lib": ["ES2020", "DOM"],
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "moduleResolution": "node",
+    "noEmit": true
+  },
+  "include": ["e2e/**/*.ts"]
+}