Initial commit - Application CLEO de gestion de devis

- Architecture MVC avec framework maison d6
- Modules : devis, clients, marchés, SAP
- Documentation initiale (README et TODO)
- Configuration Composer avec dépendances

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

pub/res/bs-icons-1.11.1/arrow-down-right.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-down-right" viewBox="0 0 16 16">
+  <path fill-rule="evenodd" d="M14 13.5a.5.5 0 0 1-.5.5h-6a.5.5 0 0 1 0-1h4.793L2.146 2.854a.5.5 0 1 1 .708-.708L13 12.293V7.5a.5.5 0 0 1 1 0v6z"/>
+</svg>