📝 docs: add agent configuration ADR and compact CHANGELOG

- Add adr/0010-agent-configuration-relationship.md with complete agent config
- Update CHANGELOG.md to be compact and iterative (last 5 entries only)
- Fix documentation links to reference valid Mistral Vibe resources
- Document workflow constraints and decision making process

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

CHANGELOG.md

@@ -0,0 +1,100 @@
+# DanceLessonsCoach Agent Improvement Log
+
+This file tracks the agent's contributions and decisions. Kept compact and iterative.
+
+## Current Focus (2026-04-04)
+
+### Active Configuration
+- **Agent**: DanceLessonsCoachProgrammer
+- **Location**: `/Users/gabrielradureau/Work/Vibe/.mistral/dancelessonscoachprogrammer-agent.toml`
+- **Status**: Fully operational with workflow constraints
+
+### Recent Decisions
+- ✅ Use existing `cli` system prompt with custom overrides
+- ✅ Enable web tools for research (web_search, web_fetch)
+- ✅ Restrict git commands (no add/commit/push/merge/rebase)
+- ✅ Require ADR documentation for all architectural decisions
+
+## Workflow Constraints
+
+### Always Ask Before
+- Adding libraries/frameworks
+- Major architectural changes
+- Breaking changes
+
+### Always Check
+- `adr/` folder for existing decisions
+- Roadmap alignment
+- BDD scenario coverage
+
+### Always Document
+- New ADRs in `adr/` folder
+- Feature changes in CHANGELOG.md
+- Test scenarios in `features/`
+
+## Agent Session Guide
+
+### Starting a Session
+```bash
+cd /Users/gabrielradureau/Work/Vibe/DanceLessonsCoach
+vibe start --agent dancelessonscoachprogrammer
+```
+
+### Example Workflow
+```
+🤖 "Need to add library X. Approve?"
+👤 "Yes, document in ADR first"
+🤖 Creates adr/00XX-library-x.md
+🤖 Implements with BDD tests
+🤖 Updates CHANGELOG.md
+```
+
+## Compact History (Last 5 Entries)
+
+### 2026-04-04
+- Configured agent with workflow constraints
+- Enabled web research tools
+- Restricted git operations
+- Documented in adr/0010-agent-configuration-relationship.md
+
+### 2026-04-04
+- Added bdd_testing skill (updated to match validated implementation)
+- Added commit_message skill (Gitmoji validation)
+- Added skill_creator skill (framework)
+
+### 2026-04-04
+- Implemented BDD testing with Godog
+- Created features/greet.feature and features/health.feature
+- Added pkg/bdd/ with test server and steps
+
+### 2026-04-04
+- Added comprehensive ADR documentation
+- Created adr/0001-0009 covering all major decisions
+- Enhanced AGENTS.md with complete project documentation
+
+### 2026-04-04
+- Established project structure
+- Implemented core Greet service
+- Added Chi router and Zerolog logging
+- Created CLI and web server interfaces
+
+## Maintenance
+
+**Compaction Rule**: Keep only last 5 entries. Older history archived in git.
+
+**Archiving**: When compaction needed:
+```bash
+git log --oneline -- CHANGELOG.md > CHANGELOG_archive.md
+echo "## Compact History (Last 5 Entries)" > CHANGELOG.md
+# Add last 5 entries from git history
+git log -5 --pretty=format:"### %ad%n- %s%n" -- CHANGELOG.md >> CHANGELOG.md
+```
+
+## References
+
+- **Agent Config**: `/Users/gabrielradureau/Work/Vibe/.mistral/dancelessonscoachprogrammer-agent.toml`
+- **ADR Pattern**: `/adr/README.md`
+- **BDD Guide**: `/pkg/bdd/README.md`
+- **Project Docs**: `/AGENTS.md`
+- **Mistral Vibe Docs**: https://docs.mistral.ai/mistral-vibe/introduction
+- **Mistral Vibe GitHub**: https://github.com/mistralai/mistral-vibe