Setup prettier pre-commit formatting with husky and lint-staged

- Install husky and lint-staged dev dependencies
- Configure pre-commit hook to run prettier on staged files
- Only format changed files to improve performance
- Prevents CI formatting failures by formatting locally

package.json

@@ -41,7 +41,7 @@
     "prettier-fix": "prettier --write .",
     "prettier-check": "prettier --check .",
     "lint": "prettier --check . && cd client && npm run lint",
-    "prepare": "npm run build",
+    "prepare": "husky",
     "publish-all": "npm publish --workspaces --access public && npm publish --access public",
     "update-version": "node scripts/update-version.js",
     "check-version": "node scripts/check-version-consistency.js"
@@ -63,12 +63,19 @@
     "@types/jest": "^29.5.14",
     "@types/node": "^22.17.0",
     "@types/shell-quote": "^1.7.5",
+    "husky": "^9.1.7",
     "jest-fixed-jsdom": "^0.0.9",
+    "lint-staged": "^16.1.5",
     "prettier": "^3.6.2",
     "rimraf": "^6.0.1",
     "typescript": "^5.4.2"
   },
   "engines": {
     "node": ">=22.7.5"
+  },
+  "lint-staged": {
+    "**/*.{js,ts,jsx,tsx,json,md}": [
+      "prettier --write"
+    ]
   }
 }