chore: remove dotenvx, simplify pre-commit hook

Replace dotenvx with plain pnpm test in pre-commit hook.
Remove @dotenvx/dotenvx devDependency (unused outside hook).

Author: jdalton

.husky/pre-commit

@@ -8,7 +8,7 @@ else
 fi
 
 if [ -z "${DISABLE_PRECOMMIT_TEST}" ]; then
-  dotenvx -q run -f .env.precommit -- pnpm test --staged
+  pnpm test --staged
 else
   printf "Skipping testing due to DISABLE_PRECOMMIT_TEST env var\n"
 fi

package.json

@@ -64,7 +64,6 @@
   "devDependencies": {
     "@anthropic-ai/claude-code": "2.1.92",
     "@babel/parser": "7.29.0",
-    "@dotenvx/dotenvx": "1.52.0",
     "@oxlint/migrate": "1.51.0",
     "@socketsecurity/lib": "5.18.2",
     "@socketsecurity/registry": "2.0.2",