Summary

This changes the Linux setup scripts to auto-use sudo when the current shell is not already running as root.

What Changed

• added shared setup_sudo, require_root_or_sudo, and run_with_sudo helpers in scripts/setup/setup-common.sh
• switched the Ubuntu, manylinux, and musllinux setup flows to route package-manager and /usr/local writes through the shared sudo helper
• removed the duplicated Ubuntu-only sudo detection now that the behavior lives in shared setup code

Why

make setup on manylinux failed immediately for non-root users because the manylinux setup script invoked yum, pip3, unzip, and tar directly, unlike the Ubuntu setup flow which already auto-used sudo. This makes the Linux setup behavior consistent across supported distributions.

User Impact

Non-root users can run make setup on manylinux and musllinux the same way they do on Ubuntu, with sudo applied automatically when system package installation or writes to /usr/local are required.

Validation

• bash -n scripts/setup/setup-common.sh
• bash -n scripts/setup/setup-manylinux.sh
• bash -n scripts/setup/setup-musllinux.sh
• bash -n scripts/setup/setup-ubuntu.sh
• git diff --check