chore: add typecheck to pre-commit hook

Add tsc --noEmit as typecheck script and run it in parallel with tests
on every commit.

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

Author: yamatatsu

.husky/pre-commit

@@ -1 +1 @@
-npx concurrently "pnpm:test run"
+npx concurrently "pnpm:test run" "pnpm:typecheck"

package.json

@@ -43,6 +43,7 @@
   "scripts": {
     "build": "unbuild",
     "test": "vitest",
+    "typecheck": "tsc --noEmit",
     "prepare": "husky"
   },
   "devDependencies": {