fix(version): 限制任务需求候选为版本已关联需求

apps/web/lib/requirement-selector.ts

@@ -26,6 +26,22 @@ export function getProjectAdoptedRequirementCandidates(requirements: Requirement
     .sort((a, b) => a.code.localeCompare(b.code, 'zh-CN'));
 }
 
+export function getVersionLinkedRequirementCandidates(requirements: Requirement[], requirementIds: string[]): Requirement[] {
+  const linkedOrder = new Map<string, number>();
+  requirementIds.forEach((id, index) => {
+    if (!linkedOrder.has(id)) linkedOrder.set(id, index);
+  });
+
+  return requirements
+    .filter((r) => linkedOrder.has(r.id))
+    .sort((a, b) => {
+      const orderA = linkedOrder.get(a.id) ?? Number.MAX_SAFE_INTEGER;
+      const orderB = linkedOrder.get(b.id) ?? Number.MAX_SAFE_INTEGER;
+      if (orderA !== orderB) return orderA - orderB;
+      return a.code.localeCompare(b.code, 'zh-CN');
+    });
+}
+
 export function mergeSelectedRequirementOptions(
   candidates: Requirement[],
   allRequirements: Requirement[],