📝 docs: rename agent changelog for clarity

- Rename CHANGELOG.md to AGENT_CHANGELOG.md
- Better reflects purpose as agent contribution tracker
- Distinguishes from software changelog files
- Update all references in ADR and documentation
- Maintain consistency with AGENTS.md naming

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

AGENT_CHANGELOG.md

@@ -2,7 +2,7 @@
 
 This file tracks the agent's contributions and decisions. Kept compact and iterative.
 
-## Current Focus (2026-04-04)
+## Current Focus (2026-04-05)
 
 ### Active Configuration
 - **Agent**: DanceLessonsCoachProgrammer
@@ -15,6 +15,24 @@ This file tracks the agent's contributions and decisions. Kept compact and itera
 - ✅ Restrict git commands (no add/commit/push/merge/rebase)
 - ✅ Require ADR documentation for all architectural decisions
 
+### Latest Commit (2026-04-05)
+**Commit:** `b279a31`
+**Message:** `✨ feat: implement OpenAPI/Swagger documentation with swaggo/swag`
+
+**Changes:**
+- Added comprehensive API documentation using swaggo/swag
+- Embedded OpenAPI spec in binary using go:embed
+- Added Swagger UI at /swagger/
+- Documented all endpoints, models, and validation rules
+- Added go:generate directive for easy regeneration
+- Updated README, AGENTS, AGENT_CHANGELOG with documentation
+- Finalized ADR 0013 with implementation details
+- Gitignored generated docs directory
+
+**Files Changed:** 12 files, 371 insertions(+), 38 deletions(-)
+
+**Status:** ✅ Pushed to main branch
+
 ## Workflow Constraints
 
 ### Always Ask Before
@@ -29,7 +47,7 @@ This file tracks the agent's contributions and decisions. Kept compact and itera
 
 ### Always Document
 - New ADRs in `adr/` folder
-- Feature changes in CHANGELOG.md
+- Feature changes in AGENT_CHANGELOG.md
 - Test scenarios in `features/`
 
 ## Agent Session Guide
@@ -46,7 +64,7 @@ vibe start --agent dancelessonscoachprogrammer
 👤 "Yes, document in ADR first"
 🤖 Creates adr/00XX-library-x.md
 🤖 Implements with BDD tests
-🤖 Updates CHANGELOG.md
+🤖 Updates AGENT_CHANGELOG.md
 ```
 
 ## Implementation History
@@ -108,10 +126,10 @@ vibe start --agent dancelessonscoachprogrammer
 
 **Archiving**: When compaction needed:
 ```bash
-git log --oneline -- CHANGELOG.md > CHANGELOG_archive.md
-echo "## Compact History (Last 5 Entries)" > CHANGELOG.md
+git log --oneline -- AGENT_CHANGELOG.md > AGENT_CHANGELOG_archive.md
+echo "## Compact History (Last 5 Entries)" > AGENT_CHANGELOG.md
 # Add last 5 entries from git history
-git log -5 --pretty=format:"### %ad%n- %s%n" -- CHANGELOG.md >> CHANGELOG.md
+git log -5 --pretty=format:"### %ad%n- %s%n" -- AGENT_CHANGELOG.md >> AGENT_CHANGELOG.md
 ```
 
 ## 2026-04-05 - OpenAPI Documentation Implementation

adr/0010-agent-configuration-relationship.md

@@ -37,7 +37,7 @@ sources = [
     "${project_root}/pkg/bdd/README.md", 
     "${project_root}/.vibe/skills/bdd_testing/SKILL.md",
     "${project_root}/.vibe/skills/commit_message/SKILL.md",
-    "${project_root}/CHANGELOG.md"
+    "${project_root}/AGENT_CHANGELOG.md"
 ]
 
 # Self-improvement through documentation learning
@@ -102,7 +102,7 @@ vibe start --agent dancelessonscoachprogrammer
 1. **Before adding dependencies**: Agent asks for approval
 2. **Before architectural changes**: Agent checks ADR folder and asks
 3. **Before new features**: Agent verifies roadmap alignment
-4. **All decisions**: Documented in CHANGELOG.md
+4. **All decisions**: Documented in AGENT_CHANGELOG.md
 
 ## Workflow Constraints
 
@@ -119,7 +119,7 @@ vibe start --agent dancelessonscoachprogrammer
 
 ### Always Document
 - New architectural decisions in `adr/`
-- Feature implementations in CHANGELOG.md
+- Feature implementations in AGENT_CHANGELOG.md
 - Test scenarios in `features/`
 - API changes in AGENTS.md