Added a root setup script that installs workspaces and builds the native addon before running the source CLI.
Documented the fresh-clone setup and smoke-check flow in the README development section.
Fixes#2895
- Renamed `packages/coding-agent/scripts/dev-launch` to `packages/coding-agent/scripts/omp` and updated the preload script reference in that launcher.
- Renamed `packages/coding-agent/scripts/dev-launch-preload.ts` to `packages/coding-agent/scripts/omp.ts` and adjusted its header comment.
- Updated the `install:dev` script in `package.json` to symlink the global `omp` command from the renamed launcher path.