Add spec-validate to community catalog

[aeltayeb]

Extension Submission

Extension Name: Spec Validate
Extension ID: spec-validate
Version: 1.0.1
Author: Ahmed Eltayeb
Repository: https://github.com/aeltayeb/spec-kit-spec-validate

Description

Comprehension validation, review gating, and approval state for spec-kit artifacts. Adds staged-reveal multiple-choice quizzes for spec.md and tasks.md, a peer review workflow with a 24-hour SLA, and a hard before_implement gate that blocks /speckit.implement until validation and review requirements are met. Cross-platform (bash + PowerShell), agent-adaptive UX (vscode/askQuestions when available, CLI fallback), and a split state model (git-tracked approval state vs. local private analytics).

Checklist

• Valid extension.yml manifest
• README.md with installation and usage docs
• LICENSE file included (MIT)
• GitHub release created (v1.0.1)
• Extension tested on real project
• All commands working
• No security vulnerabilities
• Added to extensions/catalog.community.json
• Added to Community Extensions table in README.md (alphabetical, between "Spec Sync" and "SpecTest")

Testing

• Cross-platform scripts (bash + PowerShell) covered by Bats unit, contract, and integration tests under tests/.
• Tested on Linux with spec-kit ≥ 0.5.0.