feat: 考核系统升级 P0+P1+P2 — 体验/题库/配置增强

P0 — 答题体验优化:
- 题序导航点：题目进度可视化，标记题目标记
- 标记回头检查: 点击🏷️按钮标记当前题，导航点变黄色
- 提交确认弹窗: 未答完时提交弹出确认对话框

P1 — 题库管理增强:
- QuestionBankItem 新增 tags 字段（多标签过滤）
- 新增 question_bank_templates 联表（题库跨模板复用）

P2 — 考试配置增强:
- AssessmentTemplate 新增字段:
  - attemptLimit (尝试次数限制)
  - scheduledStart/scheduledEnd (预约时段)
  - reviewMode (回顾模式: none/after_completion/per_question)
  - shuffleQuestions (每题随机排序)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/src/assessment/assessment.module.ts

@@ -9,6 +9,7 @@ import { AssessmentTemplate } from './entities/assessment-template.entity';
 import { AssessmentCertificate } from './entities/assessment-certificate.entity';
 import { QuestionBank } from './entities/question-bank.entity';
 import { QuestionBankItem } from './entities/question-bank-item.entity';
+import { QuestionBankTemplate } from './entities/question-bank-template.entity';
 import { KnowledgeBaseModule } from '../knowledge-base/knowledge-base.module';
 import { KnowledgeGroupModule } from '../knowledge-group/knowledge-group.module';
 import { ModelConfigModule } from '../model-config/model-config.module';
@@ -36,6 +37,7 @@ import { AuditLogService } from './services/audit-log.service';
       AssessmentCertificate,
       QuestionBank,
       QuestionBankItem,
+      QuestionBankTemplate,
       AuditLog,
     ]),
     forwardRef(() => KnowledgeBaseModule),

server/src/assessment/entities/assessment-template.entity.ts

@@ -106,6 +106,26 @@ export class AssessmentTemplate {
   @Column({ type: 'int', name: 'per_question_time_limit', default: 300 })
   perQuestionTimeLimit: number;
 
+  /** P2: Max attempts (0=unlimited) */
+  @Column({ type: 'int', name: 'attempt_limit', default: 1 })
+  attemptLimit: number;
+
+  /** P2: Scheduled window start (null=anytime) */
+  @Column({ type: 'text', name: 'scheduled_start', nullable: true })
+  scheduledStart: string | null;
+
+  /** P2: Scheduled window end (null=anytime) */
+  @Column({ type: 'text', name: 'scheduled_end', nullable: true })
+  scheduledEnd: string | null;
+
+  /** P2: Review mode: 'none' | 'after_completion' | 'per_question' */
+  @Column({ type: 'varchar', name: 'review_mode', default: 'none', length: 20 })
+  reviewMode: string;
+
+  /** P2: Shuffle questions per candidate */
+  @Column({ type: 'boolean', name: 'shuffle_questions', default: true })
+  shuffleQuestions: boolean;
+
   @CreateDateColumn({ name: 'created_at' })
   createdAt: Date;
 

server/src/assessment/entities/question-bank-item.entity.ts

@@ -92,6 +92,10 @@ export class QuestionBankItem {
   @Column({ type: 'simple-json', nullable: true, name: 'followup_hints' })
   followupHints: string[] | null;
 
+  /** P1: Tags for cross-category filtering */
+  @Column({ type: 'simple-json', nullable: true })
+  tags: string[] | null;
+
   @Column({ name: 'created_by', nullable: true, type: 'text' })
   createdBy: string | null;
 

server/src/assessment/entities/question-bank-template.entity.ts

@@ -0,0 +1,37 @@
+import {
+  Entity,
+  PrimaryGeneratedColumn,
+  Column,
+  CreateDateColumn,
+  ManyToOne,
+  JoinColumn,
+} from 'typeorm';
+import { QuestionBank } from './question-bank.entity';
+import { AssessmentTemplate } from './assessment-template.entity';
+
+/**
+ * P1: Join table for QuestionBank <-> AssessmentTemplate many-to-many
+ * Allows one question bank to be used across multiple templates.
+ */
+@Entity('question_bank_templates')
+export class QuestionBankTemplate {
+  @PrimaryGeneratedColumn('uuid')
+  id: string;
+
+  @Column({ name: 'bank_id' })
+  bankId: string;
+
+  @ManyToOne(() => QuestionBank, (bank) => bank.id, { onDelete: 'CASCADE' })
+  @JoinColumn({ name: 'bank_id' })
+  bank: QuestionBank;
+
+  @Column({ name: 'template_id' })
+  templateId: string;
+
+  @ManyToOne(() => AssessmentTemplate, (tpl) => tpl.id, { onDelete: 'CASCADE' })
+  @JoinColumn({ name: 'template_id' })
+  template: AssessmentTemplate;
+
+  @CreateDateColumn({ name: 'created_at' })
+  createdAt: Date;
+}