fix(comm): handle JSON tags array in lead creation

backend/handlers/comm/lead.go

@@ -92,6 +92,7 @@ func (h *LeadHandler) CreateLead(w http.ResponseWriter, r *http.Request) {
 	var lead Lead
 	var nextActionAt *time.Time
 	var nextActionType sql.NullString
+	var tagsJSON []byte
 	err := h.db.QueryRow(`
 		INSERT INTO leads (tenant_id, contact_id, conversation_id, source, source_metadata, 
 		                   interest, product, urgency, customer_type, tags, status)
@@ -104,7 +105,7 @@ func (h *LeadHandler) CreateLead(w http.ResponseWriter, r *http.Request) {
 		&lead.ID, &lead.TenantID, &lead.ContactID, &lead.ConversationID, &lead.Source, &lead.Status,
 		&lead.Interest, &lead.Product, &lead.Urgency, &lead.CustomerType, &lead.Owner,
 		&lead.LeadScore, &lead.QualificationComplete, &lead.LastInteractionAt, &nextActionAt,
-		&nextActionType, &lead.Tags, &lead.CreatedAt, &lead.UpdatedAt,
+		&nextActionType, &tagsJSON, &lead.CreatedAt, &lead.UpdatedAt,
 	)
 	if nextActionAt != nil {
 		lead.NextActionAt = nextActionAt
@@ -112,6 +113,9 @@ func (h *LeadHandler) CreateLead(w http.ResponseWriter, r *http.Request) {
 	if nextActionType.Valid {
 		lead.NextActionType = nextActionType.String
 	}
+	if len(tagsJSON) > 0 {
+		json.Unmarshal(tagsJSON, &lead.Tags)
+	}
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to create lead")
 		writeError(w, http.StatusInternalServerError, "failed to create lead")