feat(wanfa): 新增路线详情参考价格配置及展示功能

- 新增数据库迁移脚本，为详情表添加四个价格相关字段
- 完善后端schema校验、序列化逻辑，增加价格相关的数据清理与验证规则
- 新增价格配置校验逻辑，设置起售价时必须选择对应的计价单位
- 在Admin UI详情编辑器中新增价格配置模块，支持配置起售价、计价单位、适用人数范围和价格说明
- 更新小程序端详情页面，支持展示配置的参考价格信息
- 补充相关测试用例，更新API文档与类型定义

WonderQ-Admin/app/models.py

@@ -1,6 +1,6 @@
 from datetime import datetime, timezone
 from uuid import uuid4
-from sqlalchemy import Boolean, DateTime, ForeignKey, Index, Integer, String, Text, UniqueConstraint
+from sqlalchemy import Boolean, DateTime, Float, ForeignKey, Index, Integer, String, Text, UniqueConstraint
 from sqlalchemy.dialects.postgresql import JSONB
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 from .database import Base
@@ -273,6 +273,10 @@ class DetailRecord(AdminOwnedContent, Base):
     excluded: Mapped[list[str]] = mapped_column(JSONB, default=list, nullable=False)
     notes: Mapped[list[str]] = mapped_column(JSONB, default=list, nullable=False)
     gallery: Mapped[list[str]] = mapped_column(JSONB, default=list, nullable=False)
+    priceStartingValue: Mapped[float | None] = mapped_column(Float, nullable=True)
+    priceUnit: Mapped[str | None] = mapped_column(String, nullable=True)
+    pricePeopleRange: Mapped[str | None] = mapped_column(String, nullable=True)
+    priceDescription: Mapped[str | None] = mapped_column(Text, nullable=True)
     conciergeAdvisorId: Mapped[str | None] = mapped_column(String, nullable=True)
     isActive: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False, index=True)
     sortOrder: Mapped[int] = mapped_column(Integer, default=0, nullable=False, index=True)