docs: onboard github-iac as a lychee consumer

[kyle-sexton]

Summary

Closes decision #70 (Decisions Log: https://claude.ai/code/artifact/232ecdce-8316-4880-8c0a-dc3c7dcf3a63) — the upstream half: "add link-check.yml to github-iac" turned out to need this first.

melodic-software/github-iac was the only repo missing lychee from its managed list in distribution/sync-manifest.yml — every other lychee.toml-carrying repo already had it. That's the actual root cause of the missing link-check.yml: there was nothing to sync from.

The companion melodic-software/github-iac PR (melodic-software/github-iac#132) materializes the synced lychee.toml via this repo's own distribution/sync-manifest.sh apply — not hand-copied — and adds the .github/workflows/link-check.yml caller.

Verification

• distribution/sync-manifest.sh validate: passes (21 components, 8 targets).
• distribution/sync-manifest.sh plan --targets melodic-software/github-iac: shows lychee.toml as the only new mapping; every other managed component unchanged (idempotent — confirms nothing else drifts from this edit).

[claude]

Claude finished @kyle-sexton's task in 55s —— View job

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PR Review

• Gather context
• Read CLAUDE.md and REVIEW.md guidelines (no CLAUDE.md or REVIEW.md found in repo)
• Examine the changed file
• Review the diff
• Post findings

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Verdict: LGTM — approve and merge.

This is a correct, minimal, one-line addition. Everything checks out:

Change is accurate and consistent

distribution/sync-manifest.yml L173 adds - lychee to the melodic-software/github-iac target's managed list. The lychee component is properly defined in the components section (L67–69 with lychee.toml: lychee.toml), and every other target in the manifest (melodic-software/.github, ci-runner, ci-workflows, claude-code-plugins, dotfiles, provisioning) already carries lychee in its managed list. This was genuinely the only omission.

Alphabetical ordering is correct

The new entry slots between lefthook-dotnet and markdownlint, which is the right alphabetical position within github-iac's managed list — consistent with how other targets maintain their ordering.

PR description is accurate

The claim that github-iac was "the only repo missing lychee from its managed list" is confirmed by reading the file. The verification steps (validate + plan --targets) are exactly the right checks to run for a manifest edit.

No issues found.

[claude]

Claude finished @kyle-sexton's task in 49s —— View job

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PR Review

• Read changed file and diff
• Verify component definition exists
• Verify alphabetical ordering
• Cross-check against other targets
• Post findings

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Verdict: LGTM — approve and merge.

Single-line addition to distribution/sync-manifest.yml L173 — adding - lychee to the melodic-software/github-iac target's managed list.

Change is correct and consistent

The lychee component is properly defined in the manifest's components section (L67–69, lychee.toml: lychee.toml). Every other target in the file already carries lychee in its managed list; github-iac was the only omission. The fix is accurate.

Ordering is correct

The new entry slots between lefthook-dotnet and markdownlint — the right alphabetical position within github-iac's managed list, consistent with how every other target maintains ordering.

PR description is accurate

The root-cause explanation (nothing to sync from → missing link-check.yml downstream) and the verification steps (validate + plan --targets) match what the code shows.

No issues found.