docs: add v0.2.7 changelog entry for upstream merge

Author: kanfil

CHANGELOG.md

@@ -5,6 +5,35 @@ All notable changes to the Specify CLI and templates are documented here.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to to [Semantic Versioning](https://semver.org/spec/v2.0.0/).
 
+## [0.2.7] - 2026-04-03
+
+### Changed
+
+- **Merged upstream spec-kit v0.5.0** with tikalk customizations preserved
+- **Refactored tikalk code** into dedicated `src/specify_cli/tikalk/` module for cleaner separation from upstream
+- **New integration plugin architecture** from upstream with 30+ AI agent integrations
+- **Fixed user-invocable bug** in skill frontmatter generation (base.py)
+
+### Added
+
+- **Tikalk module structure**:
+  - `tikalk/theme.py` - Orange branding (ACCENT_COLOR, BANNER_COLORS)
+  - `tikalk/identity.py` - Package identity (_PKG_NAMES, _get_cli_version)
+  - `tikalk/config.py` - Configuration system with architecture settings
+  - `tikalk/team.py` - Team AI directives syncing
+- **Upstream features merged**:
+  - Forgecode agent support
+  - Stage 5/6 skills migration
+  - Community extensions catalog updates
+  - DEVELOPMENT.md documentation
+
+### Preserved
+
+- **Team AI directives** (`--team-ai-directives` CLI option)
+- **Orange theme** branding
+- **Configuration system** with architecture and skills settings
+- **Package identity** as `agentic-sdlc-specify-cli`
+
 ## [0.2.4] - 2026-04-01
 
 ### Changed