CI does not test building with ⁠setup.sh #4453

Description

Description

Our CI currently builds and tests OpenROAD-flow-scripts using Docker or build_openroad.sh --local, but we never exercise the setup.sh dependency-installation path. This leaves the local-install workflow untested and allows setup.sh breakages to go undetected.

Expected behavior

CI should include a job that runs sudo ./setup.sh (on a supported OS, e.g., Ubuntu 22.04) and verifies that the environment can subsequently build/run the flow.

Suggested Solution

Add a CI workflow/job that:

1. Checks out the repo
2. Runs sudo ./setup.sh
3. Runs ./build_openroad.sh --local (or sources setup_env.sh and verifies binaries)
4. Optionally runs a minimal flow test (make DESIGN_CONFIG=...)

Additional Context

No response