Fix: Resolve newly created users unable to login - Add modules column support to user creation and login flow

Changes:
1. Fixed create_user_handler to properly initialize modules JSON for new users
2. Fixed edit_user_handler to manage module assignments instead of non-existent email field
3. Updated settings_handler to select modules column instead of email from users table
4. Added validate_and_repair_user_modules function in setup_complete_database.py to ensure all users have correct module assignments
5. Added create_app_license function to create development license file during database setup
6. Added ensure_app_license function to docker-entrypoint.sh for license creation on container startup
7. Added user modules validation on Flask app startup to repair any malformed modules
8. License file is automatically created with 1-year validity on deployment

This ensures:
- New users created via UI get proper module assignments
- Existing users are validated/repaired on app startup
- Non-superadmin users can login after license check passes
- All deployments have a valid development license by default

docker-entrypoint.sh

@@ -157,6 +157,37 @@ initialize_database() {
     fi
 }
 
+# ============================================================================
+# LICENSE FILE CREATION
+# ============================================================================
+ensure_app_license() {
+    log_info "Ensuring application license file exists..."
+    
+    local license_file="/app/instance/app_license.json"
+    
+    if [ -f "$license_file" ]; then
+        log_success "Application license file already exists"
+        return 0
+    fi
+    
+    # Create instance directory if it doesn't exist
+    mkdir -p /app/instance
+    
+    # Create a default 1-year development license
+    local valid_until=$(date -d "+1 year" +%Y-%m-%d)
+    local current_date=$(date +%Y-%m-%d\ %H:%M:%S)
+    
+    cat > "$license_file" << EOF
+{
+  "valid_until": "$valid_until",
+  "customer": "Development",
+  "license_type": "development",
+  "created_at": "$current_date"
+}
+EOF
+    
+    log_success "Application license file created (valid until: $valid_until)"
+}
 
 
 # ============================================================================
@@ -208,6 +239,7 @@ main() {
     wait_for_database
     create_database_config
     initialize_database
+    ensure_app_license
     run_health_check
     
     echo "============================================================================"