improvement: Some improvements done. some bugs fixed.

backend/src/common/prosthesis-group.ts

@@ -1,33 +1,57 @@
 import type { Prisma } from '@prisma/client';
 
-/** Union several workflows: scan/design first, packing/shipping last, other steps first-seen. */
-export function unionWorkflowStepCodes(lists: readonly (readonly string[])[]): string[] {
-  const middle: string[] = [];
-  const seenMiddle = new Set<string>();
-  let hasScan = false;
-  let hasDesign = false;
-  let hasPacking = false;
-  let hasShipping = false;
+const UNION_PINNED_PREFIX = [
+  'intraoral_scan',
+  'choosing_abutment',
+  'design',
+  'model_create',
+] as const;
 
+const UNION_SUFFIX = ['packing', 'shipping'] as const;
+
+const UNION_PINNED = new Set<string>(UNION_PINNED_PREFIX);
+const UNION_TAIL = new Set<string>(UNION_SUFFIX);
+
+/** Remaining manufacturing steps — matches catalog LAB_WORKFLOW_STEPS order. */
+const UNION_MIDDLE_ORDER: Record<string, number> = {
+  milling_dry: 1,
+  milling_wet: 2,
+  printer_resin: 3,
+  printer_metal: 4,
+  pressing: 5,
+  sinter: 6,
+  build_up: 7,
+  stain: 8,
+  glaze: 9,
+  polish_prep: 10,
+};
+
+/** Union stacked workflows: pin scan → abutment → design → model, then catalog order, pack/ship last. */
+export function unionWorkflowStepCodes(lists: readonly (readonly string[])[]): string[] {
+  const present = new Set<string>();
   for (const list of lists) {
     for (const code of list) {
-      if (code === 'intraoral_scan') hasScan = true;
-      else if (code === 'design') hasDesign = true;
-      else if (code === 'packing') hasPacking = true;
-      else if (code === 'shipping') hasShipping = true;
-      else if (!seenMiddle.has(code)) {
-        seenMiddle.add(code);
-        middle.push(code);
-      }
+      if (code) present.add(code);
     }
   }
 
   const out: string[] = [];
-  if (hasScan) out.push('intraoral_scan');
-  if (hasDesign) out.push('design');
+  for (const code of UNION_PINNED_PREFIX) {
+    if (present.has(code)) out.push(code);
+  }
+
+  const middle = [...present].filter((code) => !UNION_PINNED.has(code) && !UNION_TAIL.has(code));
+  middle.sort((a, b) => {
+    const da = UNION_MIDDLE_ORDER[a] ?? 100;
+    const db = UNION_MIDDLE_ORDER[b] ?? 100;
+    if (da !== db) return da - db;
+    return a.localeCompare(b);
+  });
   out.push(...middle);
-  if (hasPacking) out.push('packing');
-  if (hasShipping) out.push('shipping');
+
+  for (const code of UNION_SUFFIX) {
+    if (present.has(code)) out.push(code);
+  }
   return out;
 }