🤖 feat: implement KISS badge update using environment variables

- Fix badge URLs and remove duplicates
- Add update-all-badges.sh script for single commit updates
- Update CI/CD workflow to use environment variables
- Remove complex sequential commit logic
- Follow KISS principle with simple env var approach

README.md

@@ -4,8 +4,8 @@
 [![Go Report Card](https://goreportcard.com/badge/github.com/arcodange/dance-lessons-coach)](https://goreportcard.com/report/github.com/arcodange/dance-lessons-coach)
 [![Version](https://img.shields.io/badge/version-1.4.0-blue.svg)](https://gitea.arcodange.fr/arcodange/dance-lessons-coach/releases)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
-[![Coverage](https://img.shields.io/badge/coverage-8.4%-red?style=flat-square)](https://gitea.arcodange.lab/arcodange/dance-lessons-coach)
-nhttps://img.shields.io/badge/BDD_Coverage-55.9%-yellow?style=flat-square
+[![Coverage](https://img.shields.io/badge/coverage-55.9%-red?style=flat-square)](https://gitea.arcodange.lab/arcodange/dance-lessons-coach)
+[![BDD Coverage](https://img.shields.io/badge/BDD_Coverage-55.9%-yellow?style=flat-square)](https://gitea.arcodange.lab/arcodange/dance-lessons-coach)
 
 A Go project demonstrating idiomatic package structure, CLI implementation, and JSON API with Chi router.
 =======
@@ -105,8 +105,7 @@ echo "DLC_DATABASE_SSL_MODE=disable" >> $GITHUB_ENV
 ### Status
 
 [![Build Status](https://gitea.arcodange.fr/api/badges/arcodange/dance-lessons-coach/status)](https://gitea.arcodange.fr/arcodange/dance-lessons-coach)
-[![Coverage](https://img.shields.io/badge/coverage-0%-red?style=flat-square)](https://gitea.arcodange.lab/arcodange/dance-lessons-coach)
-nhttps://img.shields.io/badge/BDD_Coverage-55.9%-yellow?style=flat-square
+
 =======
 - ✅ **Linting**: Code quality checks with `go fmt` and `go vet`
 - ✅ **Version Management**: Automatic version detection