fix(ci): register the cycles ratchet script in the gate manifest

[HouMinXi]

Summary

• fix(ci): make check-cycles honest — real graph walk + cycles ratchet (#15159 G-01/G-02) #15281 added the check:cycles:ratchet script to package.json but did not register it in config/quality/gate-manifest.json.
• The pre-commit manifest check requires every check:* script to have a manifest entry, so every commit on this base fails with unmapped alias: check:cycles:ratchet.
• Register the script next to check:cycles, with the same separately-invoked disposition. It is not added to any execution profile.

Related Issues

• Related to fix(ci): make check-cycles honest — real graph walk + cycles ratchet (#15159 G-01/G-02) #15281

Validation

• Change type: build-deploy (CI gate manifest)
• node scripts/quality/gate-manifest.mjs exits 0
• The commit itself passed the pre-commit manifest check that was failing before
• Reconciled with release/v3.8.52 @ 69cb18dca8
• No production code changed, so no new test

Tests Added Or Updated

• None. The change is one manifest entry, and the gate that enforces the manifest passed.

Coverage Notes

• No production code changed.

Reviewer Notes

• One file, five lines. The new entry mirrors the existing check:cycles entry and points at node scripts/check/check-cycles.mjs --ratchet.