feat: enhance multi-tenant UI and fix member aggregation

- adminfront: Update TenantListPage and UserListPage sorting logic to support all columns dynamically
- adminfront: Add inline 'Move', 'Remove', and 'Delete' actions directly inside the Tenant Org Chart member table
- adminfront: Remove redundant 'ACTIONS' column and profile icon from UserListPage, making the name clickable
- adminfront: Remove 'New Member' creation link from Tenant Org Chart 'Add Member' dropdown
- backend: Fix CountByCompanyCodes query to accurately aggregate user counts using both primary company_code and company_codes array

backend/internal/repository/user_repository.go

@@ -157,13 +157,21 @@ func (r *userRepository) CountByCompanyCodes(ctx context.Context, codes []string
 	}
 	var results []result
 
-	// Search by company_codes array using unnest and overlap. 
-	// This ensures users with multiple memberships are counted in each tenant they belong to.
-	err := r.db.WithContext(ctx).Table("users").
-		Select("unnest(company_codes) as company_code, count(*) as count").
-		Where("company_codes && ?", pq.Array(lowerStrings(codes))).
-		Group("company_code").
-		Scan(&results).Error
+	lowerCodes := lowerStrings(codes)
+
+	// Combine singular company_code and array company_codes using a subquery
+	// to ensure we count each user accurately per company code they belong to.
+	query := `
+		SELECT LOWER(comp_code) as company_code, count(DISTINCT id) as count
+		FROM (
+			SELECT id, company_code as comp_code FROM users WHERE LOWER(company_code) = ANY($1)
+			UNION ALL
+			SELECT id, unnest(company_codes) as comp_code FROM users WHERE company_codes && $1
+		) as combined
+		WHERE LOWER(comp_code) = ANY($1)
+		GROUP BY LOWER(comp_code)
+	`
+	err := r.db.WithContext(ctx).Raw(query, pq.Array(lowerCodes)).Scan(&results).Error
 	if err != nil {
 		return nil, err
 	}