Initial commit: CLEO ERP avec améliorations debug

- Configuration du debug conditionnel pour dev/recette
- Fonction debug() globale avec niveaux
- Logging des requêtes SQL
- Handlers d'exceptions et d'erreurs globaux

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

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

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+CLEO is a PHP-based ERP (Enterprise Resource Planning) web application built with a custom MVC framework called "d6". It's a multi-tenant system designed for business management with modules for clients, quotes, markets, invoicing, and more.
+
+## Key Commands
+
+### Development Setup
+```bash
+# Install PHP dependencies
+composer install
+
+# Deploy to development environment (Incus container)
+./deploy-cleo-dev.sh
+```
+
+## Architecture
+
+### MVC Structure
+The application follows a strict MVC pattern with naming conventions:
+- **Controllers** (`/controllers/`): Prefixed with 'c' (e.g., `cclients.php`)
+- **Models** (`/models/`): Prefixed with 'm' (e.g., `mclients.php`)
+- **Views** (`/views/`): Prefixed with 'v' (e.g., `vclients.php`)
+- **AJAX Controllers**: Prefixed with 'cjx' (e.g., `cjxchat.php`)
+
+### Request Flow
+1. `index.php` - Entry point that bootstraps the application
+2. `config/init.php` - Sets up constants and loads configuration
+3. `pub/res/d6/router.php` - Routes requests to appropriate controllers
+4. Controller loads model and view based on naming convention
+
+### Database Architecture
+- Multi-database setup with three main databases:
+  - `frontal` - Main application data
+  - `group` - Group/organization data
+  - `general` - Shared/general data
+- Database connections are managed through `config/conf.php`
+- Multi-tenant support based on HTTP host detection
+
+### Key Framework Components (d6)
+Located in `/pub/res/d6/`:
+- `router.php` - Request routing
+- `session.php` - Session management
+- `tools.php` - Utility functions
+- `controller.php` - Base controller class
+- `model.php` - Base model with database operations
+
+### Deployment
+- Target: Incus containers on Debian 12
+- Web server: nginx
+- Deployment script handles:
+  - File sync via rsync
+  - Container file transfer
+  - Permission setup (nginx:nginx ownership)
+- Production URL: dcleo.unikoffice.com
+
+### Important Configuration
+- Development mode detected by IP whitelist in `config/conf.php`
+- Entity/tenant selection based on domain (e.g., abc.cleo.com → entity 'abc')
+- File uploads stored in `/pub/files/upload/`
+- Session data likely stored server-side with custom handler