chore: fix push skill to use root checkCode task

Author: gino-m

.agent/skills/push_to_github/scripts/push.py

@@ -34,7 +34,7 @@ def main():
 
     # 2. Check Code (Lint/Analysis)
     print("\n2️⃣  Running Code Checks...")
-    run_command("./gradlew :app:checkCode")
+    run_command("./gradlew checkCode")
 
     # 3. Push
     print("\n3️⃣  Pushing to GitHub...")