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/svg/cubes.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+     viewBox="0 0 640 512"><!--! Font Awesome Pro 6.3.0 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license (Commercial License) Copyright 2023 Fonticons, Inc. -->
+    <path d="M273.8 45.8l73.7 28L271.2 103 194.8 73.7l73.7-28c1.7-.7 3.6-.7 5.3 0zM128.1 87.1V192.6c-1.2 .4-2.4 .8-3.6 1.2L34.1 228.1c-20.5 7.8-34 27.4-34 49.3V389.5c0 20.9 12.4 39.8 31.5 48.3L122 477.5c13.5 5.9 28.9 5.9 42.4 0l106.8-46.9L378 477.5c13.5 5.9 28.9 5.9 42.4 0l90.4-39.7c19.1-8.4 31.5-27.3 31.5-48.3V277.4c0-21.9-13.5-41.5-34-49.3l-90.4-34.3c-1.2-.5-2.4-.9-3.6-1.2V87.1c0-21.9-13.5-41.5-34-49.3L289.9 3.5c-12-4.6-25.3-4.6-37.4 0L162.1 37.8c-20.5 7.8-34 27.4-34 49.3zM369.1 198.2l-77.5 29.4v-84l77.5-29.7v84.3zM145.8 236.1l73.7 28-76.4 29.3L66.8 264.1l73.7-28c1.7-.7 3.6-.7 5.3 0zm17.7 192.4V333.9l77.5-29.7v90.2l-77.5 34.1zm233-192.4c1.7-.7 3.6-.7 5.3 0l73.7 28-76.4 29.3-76.4-29.3 73.7-28zm96.1 160.3l-73 32.1V333.9l77.5-29.7v85.3c0 3-1.8 5.7-4.5 6.9z"/>
+</svg>