improvement: tasks and cases feature updated based on the new prosthesis types and their steps. the whole assignment proccess removed from the flow.

backend/src/modules/cases/lab-case-task.generator.spec.ts

@@ -101,10 +101,11 @@ describe('generateLabCaseTasks', () => {
     expect(count).toBe(pfmSteps.length);
     expect(created).toHaveLength(pfmSteps.length);
     expect(created[0]).toMatchObject({
-      tooth: '14',
+      teeth: ['14'],
       prosthesisTypeCode: 'pfm_crown',
       workflowStepCode: 'intraoral_scan',
       stepLabel: 'Intraoral Scan',
+      status: 'IN_PROGRESS',
     });
     const stepCodes = (created as Array<{ workflowStepCode: string }>).map(
       (row) => row.workflowStepCode,
@@ -115,6 +116,35 @@ describe('generateLabCaseTasks', () => {
     expect(stepCodes).toContain('milling_wet');
   });
 
+  it('groups teeth sharing a prosthesis in one detail, and keeps other prosthesis separate', async () => {
+    const pfmSteps = stepsFromSeed('pfm_crown');
+    const zirconiaSteps = stepsFromSeed('monolithic_zirconia');
+    const { tx, created } = buildMockTx({
+      toothProsthesisRows: [
+        { treatmentDetailId: 'detail-1', tooth: '15', prosthesisTypeCode: 'pfm_crown' },
+        { treatmentDetailId: 'detail-1', tooth: '14', prosthesisTypeCode: 'pfm_crown' },
+        { treatmentDetailId: 'detail-1', tooth: '16', prosthesisTypeCode: 'monolithic_zirconia' },
+      ],
+      prosthesisTypes: [
+        { code: 'pfm_crown', steps: pfmSteps },
+        { code: 'monolithic_zirconia', steps: zirconiaSteps },
+      ],
+    });
+
+    const count = await generateLabCaseTasks(tx as never, 'lab-case-group', 'en');
+
+    expect(count).toBe(pfmSteps.length + zirconiaSteps.length);
+    const rows = created as Array<{ teeth: string[]; prosthesisTypeCode: string }>;
+    const pfmRows = rows.filter((r) => r.prosthesisTypeCode === 'pfm_crown');
+    const zirconiaRows = rows.filter((r) => r.prosthesisTypeCode === 'monolithic_zirconia');
+
+    expect(pfmRows).toHaveLength(pfmSteps.length);
+    expect(zirconiaRows).toHaveLength(zirconiaSteps.length);
+    // Teeth sharing the prosthesis in the same detail are merged and sorted.
+    expect(pfmRows.every((r) => JSON.stringify(r.teeth) === JSON.stringify(['14', '15']))).toBe(true);
+    expect(zirconiaRows.every((r) => JSON.stringify(r.teeth) === JSON.stringify(['16']))).toBe(true);
+  });
+
   it('omits packing and shipping for smile_design', async () => {
     const smileSteps = stepsFromSeed('smile_design');
     const { tx, created } = buildMockTx({