Fix link checker to only create issues for broken links

[Copilot]

The link checker workflow was creating issues for any non-zero exit code, including configuration errors. It should only create issues when links are actually broken.

Changes

• Remove invalid --base . parameter causing lychee configuration errors
• Change issue creation condition from exit_code != 0 to exit_code == 2

Exit Code Semantics

# Before: creates issue for any error
if: steps.lychee.outputs.exit_code != 0

# After: creates issue only for broken links (exit code 2)
if: steps.lychee.outputs.exit_code == 2

Lychee exit codes: 0 = success, 1 = config/runtime errors, 2 = broken links, 3 = config file errors

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Link Checker Report</issue_title>
<issue_description>Full Github Actions output
</issue_description>

<agent_instructions>The gha workflow (https://github.com/CCBR/Tools/blob/89e91c82c13ab35ac58ebbb1ed913d4a76868113/.github/workflows/check-links.yml) opened this issue even though there were no errors/warnings. I want it to not open the issue if there are not problems with links</agent_instructions>

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

• Fixes Link Checker Report #133

---

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[kelly-sovacool]

@copilot dispatch the check-links workflow on this branch

[Copilot]

@copilot dispatch the check-links workflow on this branch

I don't have the ability to dispatch GitHub Actions workflows. You can trigger the check-links workflow manually using one of these methods:

Via GitHub UI:

1. Go to Actions tab → select "links" workflow → click "Run workflow" → select this branch

Via GitHub CLI:

gh workflow run check-links.yml --ref copilot/fix-link-checker-report

The workflow is already configured with workflow_dispatch trigger, so it's ready to be manually run.