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/chat-left-text-fill.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-chat-left-text-fill" viewBox="0 0 16 16">
+  <path d="M0 2a2 2 0 0 1 2-2h12a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2H4.414a1 1 0 0 0-.707.293L.854 15.146A.5.5 0 0 1 0 14.793V2zm3.5 1a.5.5 0 0 0 0 1h9a.5.5 0 0 0 0-1h-9zm0 2.5a.5.5 0 0 0 0 1h9a.5.5 0 0 0 0-1h-9zm0 2.5a.5.5 0 0 0 0 1h5a.5.5 0 0 0 0-1h-5z"/>
+</svg>