Add GitHub Actions workflow to test install scripts

[Copilot]

The two install scripts (install/tools/install.sh, install/skills/install.sh) had no automated testing coverage, leaving regressions undetected on PRs.

Adds .github/workflows/test-install-scripts.yml with a single job running on the [self-hosted, mi3xx] custom runner:

test-install-scripts

Tools install script (install/tools/install.sh):

• --help output and exit 0
• --dry-run verifies all 6 tools appear in output
• --dry-run with --pip-cmd, --repo-url, --ref — confirms custom values propagate
• Error handling: unknown options exit non-zero

Skills install script (install/skills/install.sh):

• --help output and exit 0
• --dry-run for all four targets (agents, codex, cursor, claude)
• --dry-run --global resolves to $HOME-prefixed path
• Error handling: invalid targets exit non-zero

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add workflow to test skill and install scripts are working correctly</issue_title>
<issue_description>We have two install.sh scripts that we need to test on each PR. Add the necessary tests to make sure the scripts are well-tested.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add workflow to test skill and install scripts are working correctly #61

---

🔒 GitHub Advanced Security automatically protects Copilot coding agent pull requests. You can protect all pull requests by enabling Advanced Security for your repositories. Learn more about Advanced Security.

[mawad-amd]

@copilot this is too complicated. Check the other yamls and use our custom runner. simplify this.

[Copilot]

Simplified in c13f27d — now a single job on [self-hosted, mi3xx] with two focused steps (one per script), matching the style of the existing CI workflow.