chore: 后端首次基线提交

运行必须源码：app/(controller/model/service/middleware/lib/utils/validate/router)、config/、database/(migrations/seeders/sql)、启动脚本、app/public/templates 模板。已忽略运行非必须：node_modules/、logs/、run/、app/public 运行时上传数据、.env*、构建/缓存产物。
2026-08-17 12:25:42 +08:00
commit a303cf2d53
109 changed files with 25904 additions and 0 deletions
--- a/database/migrations/005-create-exam-submissions.js
+++ b/database/migrations/005-create-exam-submissions.js
@@ -0,0 +1,67 @@
+'use strict';
+
+/**
+ * 迁移文件：创建答题记录表（exam_submissions）
+ * 存储选手的试卷答题记录
+ */
+
+module.exports = {
+  up: async (queryInterface, Sequelize) => {
+    const { INTEGER, TEXT, DATE } = Sequelize;
+
+    await queryInterface.createTable('exam_submissions', {
+      id: {
+        type: INTEGER,
+        primaryKey: true,
+        autoIncrement: true,
+        allowNull: false,
+        comment: '答题记录唯一标识',
+      },
+      contestant_id: {
+        type: INTEGER,
+        allowNull: false,
+        comment: '选手 ID',
+        references: {
+          model: 'contestants',
+          key: 'id',
+        },
+        onUpdate: 'CASCADE',
+        onDelete: 'CASCADE',
+      },
+      answers: {
+        type: TEXT,
+        allowNull: false,
+        comment: '答题内容（JSON）',
+      },
+      submit_time: {
+        type: DATE,
+        allowNull: false,
+        comment: '提交时间',
+      },
+      score: {
+        type: INTEGER,
+        allowNull: true,
+        defaultValue: null,
+        comment: '试卷得分',
+      },
+      created_at: {
+        type: DATE,
+        allowNull: false,
+        comment: '创建时间',
+      },
+      updated_at: {
+        type: DATE,
+        allowNull: false,
+        comment: '更新时间',
+      },
+    });
+
+    await queryInterface.addIndex('exam_submissions', ['contestant_id'], {
+      name: 'idx_exam_submissions_contestant_id',
+    });
+  },
+
+  down: async (queryInterface) => {
+    await queryInterface.dropTable('exam_submissions');
+  },
+};