Add performance testing infrastructure

package.json

@@ -9,7 +9,9 @@
     "test": "bun test",
     "test:security": "bun test src/server/security/",
     "test:watch": "bun test --watch",
-    "test:coverage": "bun test --coverage"
+    "test:coverage": "bun test --coverage",
+    "perf": "bun run scripts/perf-test.ts",
+    "perf:compare": "bun run scripts/perf-compare.ts"
   },
   "dependencies": {
     "@aws-sdk/client-s3": "^3.953.0",
@@ -64,9 +66,13 @@
     "node": "24.x"
   },
   "devDependencies": {
+    "@playwright/test": "^1.57.0",
     "@tailwindcss/typography": "^0.5.19",
     "@types/bcrypt": "^6.0.0",
     "@types/fast-diff": "^1.2.2",
+    "chrome-launcher": "^1.2.1",
+    "lighthouse": "^13.0.1",
+    "playwright": "^1.57.0",
     "prettier": "^3.7.4",
     "prettier-plugin-tailwindcss": "^0.7.2",
     "trpc-panel": "^1.3.4"