Created comprehensive changelog-schema-v1.0.md to validate CHANGELOG.md
files following the Keep a Changelog format. This schema demonstrates
the practical application of the schema evolution system.
**Schema Features**:
- Section validation: Enforces [Unreleased] section presence
- Version format validation: [X.Y.Z] - YYYY-MM-DD pattern
- Semantic versioning compliance
- ISO 8601 date format checking
- Change type subsections: Added, Changed, Deprecated, Removed, Fixed, Security
- Content pattern matching via x-markitect-content-control extensions
- Structural validation via JSON Schema properties
**Validation Results**:
✅ Successfully validates project CHANGELOG.md
✅ All section requirements met (7 sections checked, 11 found)
✅ All content requirements met
✅ All semantic checks passing
**Implementation Notes**:
- H1 "Changelog" title validated via JSON Schema structural checks
- H2 sections validated via x-markitect-sections classifications
- SectionValidator limitation: Only checks H2+ headings, not H1
- Workaround: Structural validation covers H1 title requirement
**Philosophy**: "The release that validates itself"
- v0.10.0 uses its own schema system to validate its CHANGELOG
- Perfect showcase of schema evolution practical value
- Demonstrates x-markitect extensions in real-world use case
**Stage 2 Complete** per release-management-optimization workplan.
Files:
- markitect/schemas/changelog-schema-v1.0.md (new)
- CHANGELOG.md (documented new schema)
tegwick
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