* test: add stale /gsd: colon reference regression guard
Fixes#1748
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: replace 39 stale /gsd: colon references with /gsd- hyphen format
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>