Add opt-in clarify-spec-gate wrap preset

[gyanu2507]

Description

Follow-up to #4507 / #1717. Core /speckit.clarify keeps a bounded deferral. The stage-gate procedure, the >60% defer-ratio audit, and the MUST-NOT block are methodology, so they live in an opt-in wrap of speckit.clarify.

Install with specify preset add clarify-spec-gate. The wrapper uses {CORE_TEMPLATE}, so core command updates still compose.

Testing

• uv run pytest tests/test_presets.py::TestClarifySpecGatePreset tests/contract/test_wheel_bundled_presets.py tests/test_presets.py::TestConstitutionSyncPreset

[mnriem]

@gyanu2507— genuinely, thank you for this. You took the #1717 problem, accepted the rescope on #4507 without friction, and turned the methodology into a clean, well-built, well-tested preset. This is exactly the kind of thoughtful, responsive contribution that makes the project better, and I want to be clear the work is landing — just in the right place.

Now that I can see the preset itself, the call is about hosting, not quality: an opinionated clarify methodology belongs in the community catalog (externally hosted), not as a first-party preset bundled inside spec-kit. The bundled set (presets/catalog.json — lean/constitution-sync) is a small, foundational, github-maintained group, and keeping methodology opinions in the community catalog is consistent with #4507 removing this from core so it isn't imposed on everyone. Per presets/PUBLISHING.md, community presets live in your own public repo and come in via the [Preset] submission issue → validated → added to catalog.community.json.

So I'm closing this against the repo itself, but everything you built carries straight over: publish clarify-spec-gate from your own repo (the README, preset.yml, and wrapped speckit.clarify.md are already done), tag a release, and open a [Preset] submission issue — I'll validate it and get it into the community catalog. The core bounded-deferral change from #4507 stays in-repo separately, so the two compose exactly as you designed. Thanks again, and I'm looking forward to the catalog submission.

(Drafted with AI assistance — GitHub Copilot.)