Improve user group assignment debugging and logging in production

Add SQL debugging script and enhanced console logs to diagnose user group assignment issues in production, addressing user reports of unassigned groups.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: a8a78c07-e900-425c-a577-5b4c5894379d
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/a8a78c07-e900-425c-a577-5b4c5894379d/fwSlq3W

debug-usergroups-production.sql

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+-- Script de débogage pour vérifier l'état des groupes d'utilisateurs en production
+-- À exécuter sur votre base de données de production
+
+-- 1. Vérifier la structure de la table user_groups
+\d user_groups;
+
+-- 2. Vérifier tous les enregistrements dans user_groups
+SELECT * FROM user_groups ORDER BY user_id;
+
+-- 3. Vérifier les groupes disponibles
+SELECT id, name, color FROM groups ORDER BY name;
+
+-- 4. Vérifier les utilisateurs existants
+SELECT id, username, email, role FROM users ORDER BY username;
+
+-- 5. Requête combinée pour voir les associations utilisateur-groupe
+SELECT 
+    u.id as user_id,
+    u.username,
+    u.email,
+    ug.group_id,
+    g.name as group_name,
+    g.color as group_color
+FROM users u
+LEFT JOIN user_groups ug ON u.id = ug.user_id
+LEFT JOIN groups g ON ug.group_id = g.id
+ORDER BY u.username, g.name;
+
+-- 6. Compter les associations par utilisateur
+SELECT 
+    u.username,
+    COUNT(ug.group_id) as groups_count
+FROM users u
+LEFT JOIN user_groups ug ON u.id = ug.user_id
+GROUP BY u.id, u.username
+ORDER BY u.username;
+
+-- 7. Vérifier s'il y a des enregistrements orphelins dans user_groups
+SELECT 
+    ug.*,
+    CASE WHEN u.id IS NULL THEN 'USER_MISSING' ELSE 'USER_OK' END as user_status,
+    CASE WHEN g.id IS NULL THEN 'GROUP_MISSING' ELSE 'GROUP_OK' END as group_status
+FROM user_groups ug
+LEFT JOIN users u ON ug.user_id = u.id
+LEFT JOIN groups g ON ug.group_id = g.id
+WHERE u.id IS NULL OR g.id IS NULL;