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/schemas.py

@@ -11,6 +11,7 @@ LeadType = Literal["general", "vehicle"]
 VehicleServiceType = Literal["charter", "transfer"]
 CharterDuration = Literal["halfDay", "fullDay"]
 BrowseHistoryType = Literal["wanfa-route", "team-building", "wild-archive"]
+PriceUnit = Literal["person", "day", "group"]
 
 
 class LoginIn(BaseModel):
@@ -281,6 +282,13 @@ def normalize_detail_gallery(value: list[str]) -> list[str]:
     return normalized
 
 
+def normalize_optional_price_text(value: str | None) -> str | None:
+    if value is None:
+        return None
+    normalized = normalize_optional_text(value)
+    return normalized or None
+
+
 class DetailCreate(BaseModel):
     key: str = Field(min_length=1, max_length=120)
     eyebrow: str = Field(min_length=1, max_length=80)
@@ -293,6 +301,10 @@ class DetailCreate(BaseModel):
     excluded: list[str] = Field(default_factory=list)
     notes: list[str] = Field(default_factory=list)
     gallery: list[str] = Field(default_factory=list)
+    priceStartingValue: float | None = Field(default=None, ge=0)
+    priceUnit: PriceUnit | None = None
+    pricePeopleRange: str | None = Field(default=None, max_length=80)
+    priceDescription: str | None = Field(default=None, max_length=500)
     conciergeAdvisorId: str | None = Field(default=None, max_length=120)
     isActive: bool = True
     sortOrder: int | None = Field(default=None, ge=0)
@@ -312,6 +324,11 @@ class DetailCreate(BaseModel):
     def validate_detail_gallery(cls, value: list[str]) -> list[str]:
         return normalize_detail_gallery(value)
 
+    @field_validator("pricePeopleRange", "priceDescription", mode="before")
+    @classmethod
+    def normalize_price_text(cls, value: str | None) -> str | None:
+        return normalize_optional_price_text(value)
+
     @field_validator("conciergeAdvisorId", mode="before")
     @classmethod
     def normalize_concierge_advisor_id(cls, value: str | None) -> str | None:
@@ -333,6 +350,10 @@ class DetailPatch(BaseModel):
     excluded: list[str] | None = None
     notes: list[str] | None = None
     gallery: list[str] | None = None
+    priceStartingValue: float | None = Field(default=None, ge=0)
+    priceUnit: PriceUnit | None = None
+    pricePeopleRange: str | None = Field(default=None, max_length=80)
+    priceDescription: str | None = Field(default=None, max_length=500)
     conciergeAdvisorId: str | None = Field(default=None, max_length=120)
     isActive: bool | None = None
     sortOrder: int | None = Field(default=None, ge=0)
@@ -358,6 +379,11 @@ class DetailPatch(BaseModel):
             raise ValueError("字段不能为空")
         return normalize_detail_gallery(value)
 
+    @field_validator("pricePeopleRange", "priceDescription", mode="before")
+    @classmethod
+    def normalize_optional_price_text_fields(cls, value: str | None) -> str | None:
+        return normalize_optional_price_text(value)
+
     @field_validator("conciergeAdvisorId", mode="before")
     @classmethod
     def normalize_optional_concierge_advisor_id(cls, value: str | None) -> str | None: