feat(review): 支持多候选稿验收轮次

- 支持每轮提交 1–5 个候选稿并按指定稿验收
- 保留历史轮次只读并兼容单候选稿版本接口
- 同步 SQLite/PostgreSQL schema、迁移验证、测试与项目文档

shared/types.ts

@@ -1,4 +1,6 @@
 export type ReviewStatus = 'draft' | 'pending' | 'changes_requested' | 'approved';
+export type CandidateStatus = 'draft' | 'pending' | 'changes_requested' | 'selected' | 'not_selected';
+export type ReviewRoundStatus = 'draft' | 'reviewing' | 'completed';
 export type CollectionStatus = 'draft' | 'reviewing' | 'completed' | 'archived';
 export type UserRole = 'platform_admin' | 'group_admin' | 'operator';
 
@@ -132,6 +134,8 @@ export interface Note {
   tags: string[];
   review_status: ReviewStatus;
   version_number: number;
+  active_round_id: number | null;
+  approved_version_number: number | null;
   cover_image: string;
   image_count: number;
   annotation_count: number;
@@ -198,6 +202,12 @@ export interface NoteDetail extends Note {
 
 export interface WorkVersion {
   version_number: number;
+  review_round_id: number;
+  round_number: number;
+  candidate_name: string;
+  candidate_status: CandidateStatus;
+  round_status: ReviewRoundStatus;
+  selected_version_number: number | null;
   title: string;
   description: string;
   tags: string[];
@@ -205,6 +215,16 @@ export interface WorkVersion {
   created_at: string;
 }
 
+export interface ReviewRound {
+  id: number;
+  note_id: number;
+  round_number: number;
+  status: ReviewRoundStatus;
+  selected_version_number: number | null;
+  completed_at: string | null;
+  created_at: string;
+}
+
 export interface ReviewEvent {
   id: number;
   version_number: number;