Fix chown errors in startup script

- Remove chown on /home mount root (PVC root not owned by container user)
- Change imagePullPolicy to Always to pick up new images on pod restart

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via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

scripts/init-repo.sh

@@ -54,7 +54,6 @@ fi
 RUN_UID="${USER_ID:-1000}"
 RUN_GID="${GROUP_ID:-1000}"
 chown -R "$RUN_UID:$RUN_GID" "$WORKSPACE_DIR"
-chown -R "$RUN_UID:$RUN_GID" /home
 
 # Start Happy Coder in background as the app user
 echo "Starting Happy Coder..."