---
title: "Documentation Changelog"
description: "Track of documentation updates aligned to software releases"
version: "1.0.0"
last_updated: "2026-01-20"
---
# Documentation Changelog
This document tracks documentation updates aligned with software releases, using semantic versioning aligned to code releases.
## Format
Each release section includes:
- **Added**: New documentation pages or sections
- **Changed**: Modifications to existing documentation
- **Deprecated**: Documentation pages or patterns marked for removal
- **Removed**: Deleted documentation
- **Fixed**: Documentation corrections or clarifications
- **Doc Version**: Associated /docs/vX version
---
## [1.0.0] - 2026-01-20 (Enterprise Upgrade Release)
**Code Release**: 1.0.0
**Doc Version**: /docs/v1
**Status**: Production Ready
### Added
#### Core Documentation Structure
- **Executive One-Page Overview** (`docs/EXECUTIVE_OVERVIEW.md`): One-page summary for non-technical stakeholders
- **Versioned Documentation System**: Implemented /docs/v1, /docs/v2 placeholder structure
- **Documentation Metadata & Lifecycle**: DOCUMENTATION_LIFECYCLE.md defining support policies and deprecation
- **Maturity Model & Roadmap** (`docs/MATURITY_MODEL.md`): Enterprise maturity stages across 6 dimensions
- **Beginner-to-Expert Guide** (`docs/guides/ABSOLUTE_BEGINNER_GUIDE.md`): Step-by-step "never used computer before" approach
#### Architecture & Design
- **ADR System Expansion**:
- ADR template (adr/TEMPLATE.md)
- ADR taxonomy and status definitions
- 7 foundational ADRs covering governance, security, audit, and verification
- **Diagram Source + Rendered Convention**: /docs/diagrams/source (Mermaid) + /docs/diagrams/rendered (SVG)
- **System Architecture Diagrams**: Source (Mermaid) with rendered SVG for CI integration
#### Developer Experience
- **Complete Setup Walkthrough** (`docs/guides/SETUP_GUIDE.md`): Platform-specific (Windows/macOS/Linux)
- **Glossary for Humans** (`docs/GLOSSARY.md`): Plain-English definitions of all technical terms
- **Troubleshooting Guide** (`docs/TROUBLESHOOTING.md`): Common failures and recovery steps
- **Diagram Editing & Regeneration Guide** (`docs/diagrams/EDITING_GUIDE.md`): Workflow and commands
- **Copy/Paste Command Blocks**: All commands include purpose, success indicators, and failure handling
#### Security & Governance
- **Data Handling & Safety Guide** (`docs/SAFETY_AND_DATA_HANDLING.md`): Secret management, API keys, safe defaults
- **Governance Model Documentation**: Role definitions, authorization flows, audit trail verification
#### Repository Quality
- **Issue Templates** (.github/ISSUE_TEMPLATE/*.md): Bug reports, feature requests, security reports
- **Pull Request Template** (.github/pull_request_template.md): Standardized PR expectations
- **CI/CD Configuration** (.github/workflows/): Lint, test, docs build, diagram generation validation
- **Documentation Build System**: npm scripts for docs rendering and validation
### Changed
- **README.md**: Restructured for instant credibility; added status badges, support policy, docs triage
- **CONTRIBUTING.md**: Enhanced with documentation contribution standards and versioning requirements
- **SECURITY.md**: Aligned to documentation lifecycle; added SOC 2 roadmap clarity
- **ADR Process**: Upgraded from basic to enterprise-grade with templates and automation
### Deprecated
- Monolithic documentation files without metadata headers
- Unversioned documentation approach (docs without /v1, /v2 structure)
### Removed
- Redundant documentation stubs (consolidation for single source of truth)
### Fixed
- Documentation consistency across all files (formatting, headings, tone)
- Cross-link validation and GitHub-compatible rendering
- Diagram source/rendered separation and tooling
---
## Release Notes by Version
### Doc Version 1.0.0
- **Scope**: Enterprise-grade documentation for ATLAS-GATE MCP 1.0.0 production release
- **Audience**: Beginners (absolute zero), operators, developers, architects
- **Coverage**: System design, governance model, security posture, complete usage guides
- **Support Policy**: LTS (Long-Term Support) - 24 months maintenance
### Doc Version 2.0.0 (Planned)
- **Trigger**: Feature-major release with significant API/UX changes
- **Coverage**: New features, API deprecations, migration guides
- **Timeline**: TBD
---
## Documentation Support Policy
| Doc Version | Release Date | End of Support | Status |
|-------------|-------------|----------------|--------|
| 1.0.0 | 2026-01-20 | 2028-01-20 | Active LTS |
| 2.0.0 | TBD | TBD | Planned |
---
## How to Update This Changelog
1. For each software release, create a new section with code version
2. Document all documentation changes in Added/Changed/Deprecated/Removed/Fixed categories
3. Link to new/modified documentation files
4. Update Doc Version table with support dates
5. Maintain alignment: docs/ vX folder structure mirrors software versioning
---
**Maintainer**: ATLAS-GATE MCP Documentation Team
**Review Schedule**: With each software release
**Last Updated**: 2026-01-20
