docs-12: Add CI Validation For Docs Command Examples (Modules Side)

[djm81]

Summary

Modules-side counterpart to specfact-cli#440. Add CI validation that module docs command examples match actual bundle implementations.

OpenSpec Change

• Change folder: openspec/changes/docs-12-docs-validation-ci/
• Priority: P2
• Depends on: docs-06 through docs-10
• Cross-repo: specfact-cli#440 (docs-12-docs-validation-ci)

Source Plan

specfact-cli-internal/docs/internal/implementation/2026-03-23-docs-refactoring-beginner-to-enterprise-plan.md