Add simplified test data without optional contact email

Add simplified test data to `sql/create_test_data_simple.sql` including suppliers and groups without optional fields, and perform test insertions for `avoirs` to verify core functionality.

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Replit-Commit-Session-Id: 9fcf4b21-eb0c-4e53-a567-e2ce4a6ad869
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sql/create_test_data_simple.sql

@@ -0,0 +1,41 @@
+-- 🔧 CRÉATION DONNÉES DE TEST SIMPLIFIÉES
+-- Sans colonnes optionnelles, juste les colonnes essentielles
+
+-- 1. Créer un fournisseur de test (sans contact_email)
+INSERT INTO suppliers (name) VALUES ('Fournisseur Test') 
+ON CONFLICT DO NOTHING
+RETURNING id;
+
+-- 2. Créer un groupe de test  
+INSERT INTO groups (name) VALUES ('Magasin Test')
+ON CONFLICT DO NOTHING
+RETURNING id;
+
+-- 3. Vérifier qu'on a au moins un utilisateur
+SELECT 'Utilisateurs disponibles:', COUNT(*) FROM users;
+SELECT 'Premier utilisateur:', id FROM users LIMIT 1;
+
+-- 4. Test d'insertion avoir avec les données créées
+INSERT INTO avoirs (
+    supplier_id, 
+    group_id, 
+    invoice_reference, 
+    amount, 
+    comment, 
+    commercial_processed, 
+    created_by
+) VALUES (
+    (SELECT id FROM suppliers WHERE name = 'Fournisseur Test' LIMIT 1),
+    (SELECT id FROM groups WHERE name = 'Magasin Test' LIMIT 1),
+    'TEST-FINAL-' || EXTRACT(EPOCH FROM NOW()),
+    75.50,
+    'Test insertion production',
+    false,
+    (SELECT id FROM users LIMIT 1)::varchar
+) RETURNING id, supplier_id, group_id, created_by, created_at;
+
+-- 5. Vérification finale
+SELECT COUNT(*) as total_avoirs FROM avoirs;
+
+-- 6. Nettoyer le test si vous voulez
+-- DELETE FROM avoirs WHERE comment = 'Test insertion production';