chore: add husky and format:fix script (#535)

* chore: add husky and format:fix script

* docs: initialize empty CHANGELOG.md

Placeholder — release notes will be populated at merge time.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

package-lock.json

@@ -23,6 +23,7 @@
         "@types/node": "^22.10.0",
         "@types/qrcode-terminal": "^0.12.2",
         "@vitest/coverage-v8": "^4.0.18",
+        "husky": "^9.1.7",
         "prettier": "^3.8.1",
         "tsx": "^4.19.0",
         "typescript": "^5.7.0",
@@ -2377,6 +2378,22 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/husky": {
+      "version": "9.1.7",
+      "resolved": "https://registry.npmjs.org/husky/-/husky-9.1.7.tgz",
+      "integrity": "sha512-5gs5ytaNjBrh5Ow3zrvdUUY+0VxIuWVL4i9irt6friV+BqdCfmV11CQTWMiBYWHbXhco+J1kHfTOUkePhCDvMA==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "husky": "bin.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/typicode"
+      }
+    },
     "node_modules/ieee754": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz",