Use vue-tsc --build in frontend hook to match CI

The hook used --noEmit which is less strict than CI's --build,
causing type errors to slip through.

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

.claude/hooks/frontend-check.sh

@@ -16,7 +16,7 @@ cd "$CLAUDE_PROJECT_DIR/frontend"
 ERRORS=""
 
 # Type-check
-if OUTPUT=$(npx vue-tsc --noEmit 2>&1); then
+if OUTPUT=$(npm run type-check 2>&1); then
     :
 else
     ERRORS+="Type-check failed:\n$OUTPUT\n\n"