feat(版本): 优化概览与只读状态

关键改动：

- 增加需求排序和版本只读状态规则及测试

- 完善版本概览阶段耗时、项目页和工作台展示

- 优化小宝预警请求节流、建议状态和风险过滤

Co-Authored-By: Codex GPT-5 <codex@openai.com>

apps/web/lib/version-status.ts

@@ -1,5 +1,11 @@
 export type VersionStatus = 'developing' | 'planned' | 'released' | 'paused' | 'closed';
 
+const READONLY_VERSION_STATUSES = new Set<VersionStatus>(['released', 'closed', 'paused']);
+
+export function isVersionReadonly(status: VersionStatus): boolean {
+  return READONLY_VERSION_STATUSES.has(status);
+}
+
 export const VERSION_STATUS_LABEL: Record<VersionStatus, string> = {
   developing: '进行中',
   planned: '规划中',
@@ -8,6 +14,11 @@ export const VERSION_STATUS_LABEL: Record<VersionStatus, string> = {
   closed: '已关闭',
 };
 
+export function getVersionReadonlyNotice(status: VersionStatus): string | null {
+  if (!isVersionReadonly(status)) return null;
+  return `${VERSION_STATUS_LABEL[status]}版本不可编辑或删除任务`;
+}
+
 export const VERSION_STATUS_DOT: Record<VersionStatus, string> = {
   developing: 'bg-blue-500',
   planned: 'bg-orange-500',