v1.5.9

Fixed

• npx cwd on Windows — bin.js in both @openenthrium/oe-runtime and @openenthrium/oe-mcp now uses process.env.INIT_CWD || process.cwd() as the working directory for the spawned binary; fixes "agent file not found" error when running via npx on Windows where npx.cmd uses pushd/popd and changes the process cwd