Fix git safe.directory issue in deploy-app workflow

The repository is owned by root but ec2-user runs the deploy.
Adding safe.directory config before git operations.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: stevemidgley

.github/workflows/deploy-app.yml

@@ -47,6 +47,9 @@ jobs:
             set -e
             cd ${{ env.APP_DIR }}
 
+            # Fix git safe directory issue (repo owned by root, running as ec2-user)
+            git config --global --add safe.directory ${{ env.APP_DIR }}
+
             echo "Pulling latest code..."
             git fetch origin main
             git reset --hard origin/main