feat: 初始化考培练系统项目

- 从服务器拉取完整代码
- 按框架规范整理项目结构
- 配置 Drone CI 测试环境部署
- 包含后端(FastAPI)、前端(Vue3)、管理端

技术栈: Vue3 + TypeScript + FastAPI + MySQL

backend/app/models/course_exam_settings.py

@@ -0,0 +1,34 @@
+"""
+课程考试设置模型
+"""
+from sqlalchemy import Column, Integer, ForeignKey, Boolean
+from sqlalchemy.orm import relationship
+from app.models.base import BaseModel, SoftDeleteMixin, AuditMixin
+
+
+class CourseExamSettings(BaseModel, SoftDeleteMixin, AuditMixin):
+    """课程考试设置表"""
+    __tablename__ = "course_exam_settings"
+    
+    course_id = Column(Integer, ForeignKey("courses.id"), unique=True, nullable=False, comment="课程ID")
+    
+    # 题型数量设置
+    single_choice_count = Column(Integer, default=4, nullable=False, comment="单选题数量")
+    multiple_choice_count = Column(Integer, default=2, nullable=False, comment="多选题数量") 
+    true_false_count = Column(Integer, default=1, nullable=False, comment="判断题数量")
+    fill_blank_count = Column(Integer, default=2, nullable=False, comment="填空题数量")
+    essay_count = Column(Integer, default=1, nullable=False, comment="问答题数量")
+    
+    # 考试参数设置
+    duration_minutes = Column(Integer, default=10, nullable=False, comment="考试时长(分钟)")
+    difficulty_level = Column(Integer, default=3, nullable=False, comment="难度系数(1-5)")
+    passing_score = Column(Integer, default=60, nullable=False, comment="及格分数")
+    
+    # 其他设置
+    is_enabled = Column(Boolean, default=True, nullable=False, comment="是否启用")
+    show_answer_immediately = Column(Boolean, default=False, nullable=False, comment="是否立即显示答案")
+    allow_retake = Column(Boolean, default=True, nullable=False, comment="是否允许重考")
+    max_retake_times = Column(Integer, default=3, nullable=True, comment="最大重考次数")
+    
+    # 关系
+    course = relationship("Course", backref="exam_settings", uselist=False)