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>

vendor/markbaker/complex/examples/testOperations.php

@@ -0,0 +1,35 @@
+<?php
+
+use Complex\Complex as Complex;
+use Complex\Operations;
+
+include(__DIR__ . '/../vendor/autoload.php');
+
+$values = [
+    new Complex(123),
+    new Complex(456, 123),
+    new Complex(0.0, 456),
+];
+
+foreach ($values as $value) {
+    echo $value, PHP_EOL;
+}
+
+echo 'Addition', PHP_EOL;
+
+$result = Operations::add(...$values);
+echo '=> ', $result, PHP_EOL;
+
+echo PHP_EOL;
+
+echo 'Subtraction', PHP_EOL;
+
+$result = Operations::subtract(...$values);
+echo '=> ', $result, PHP_EOL;
+
+echo PHP_EOL;
+
+echo 'Multiplication', PHP_EOL;
+
+$result = Operations::multiply(...$values);
+echo '=> ', $result, PHP_EOL;