feature: Phase4 - Clinic two-step treatment UI

frontend/src/types/treatment-catalog.ts

@@ -0,0 +1,6 @@
+export interface TreatmentCatalogEntry {
+  id: string;
+  code: string;
+  labDependent: boolean;
+  sortOrder: number;
+}

frontend/src/types/treatment.ts

@@ -136,6 +136,16 @@ export interface TreatmentDetailDraft {
 /** @deprecated Use TreatmentDetailDraft — kept for editor components until Phase 4 rename */
 export type TreatmentCaseDraft = TreatmentDetailDraft;
 
+export interface LabCaseDraft {
+  clientId: string;
+  id?: string;
+  destinationOrganizationId: string | null;
+  labComment: string;
+  detailClientIds: string[];
+  sentAt?: string | null;
+  sends?: LabCaseSendInfo[];
+}
+
 export type SavedTreatmentDetailPayload = {
   clientId: string;
   id?: string;