```

refactor(api): 使用常量替代硬编码字符串

- 在health_check接口中使用ApiResponseKey.STATUS和ApiStatus.OK常量
- 替换硬编码的状态返回值为枚举常量

refactor(core): 配置模块错误信息统一使用常量

- 从constants模块导入ConfigErrorDetail并替换CORS_ORIGINS和LEGACY_ALLOWED_QUERIES的验证错误信息
- 配置类中的默认值使用constants中定义的常量

feat(constants): 添加API响应、安全错误和配置错误常量类

- 新增ApiResponseKey用于API状态键名
- 新增ApiStatus用于API状态值
- 新增SecurityErrorDetail用于安全认证错误详情
- 新增ConfigErrorDetail用于配置验证错误详情
- 添加DEFAULT_MODEL_PROVIDER和DEFAULT_OPENCLAW_ACTION_JSON常量

refactor(security): 安全认证模块使用错误常量

- 将硬编码的安全错误信息替换为SecurityErrorDetail常量
- 包括API密钥、审批密钥和审计密钥的相关错误信息

refactor(ai-agent): AI代理适配器改进错误处理

- 将HTTP状态码替换为FastAPI状态常量
- 添加OpenClaw工具和操作的错误常量
- 修复健康检查和工具调用中的状态码比较逻辑
- 添加AIToolAuditKey用于工具审计键名

feat(ai-agent): 扩展AI代理常量定义

- 新增AIToolAuditKey用于工具审计字段
- 添加OpenClaw相关的错误常量如OPENCLAW_CHAT_PROVIDER_REQUIRED等
- 添加UNSUPPORTED_AI_SKILL_TEMPLATE模板字符串

refactor(approvals): 审批模块常量化重构

- 新增ApprovalPayloadKey用于审批载荷字段
- 添加approval_action函数和APPROVAL_ACTION_SEPARATOR分隔符
- 使用常量替换字面量值

feat(audit): 审计模块新增飞书事件动作类型

- 添加FEISHU_WEBHOOK_EVENT和FEISHU_LONG_CONNECTION_EVENT审计动作

refactor(business): 业务模块全面常量化

- 新增BusinessDomain枚举包含所有业务域
- 添加BusinessResponseKey、BusinessPayloadKey等常量类
- 重构DOMAIN_MODELS为frozenset以提高性能
- 添加normalize_domain等辅助函数用于域标准化
- 使用常量替换路由和业务服务中的硬编码字符串
- 添加业务错误常量和字段验证模板

refactor(feishu): 飞书客户端错误处理优化

- 将HTTP状态码替换为FastAPI标准状态常量
- 改进错误处理的一致性

refactor(approvals): 审批服务使用新常量结构

- 使用ApprovalPayloadKey常量重构载荷字段
- 使用approval_action函数统一动作命名格式
- 优化高风险域判断逻辑
```

app/modules/business/routes.py

@@ -1,9 +1,11 @@
 from fastapi import APIRouter, Depends, HTTPException, Query
+from fastapi import status as http_status
 from sqlalchemy.orm import Session
 
 from app.core.database import get_db
 from app.core.security import ApiPrincipal, require_api_key
-from app.modules.business.registry import DOMAIN_MODELS
+from app.modules.business.constants import BusinessField, BusinessResponseKey
+from app.modules.business.registry import supported_domain_values
 from app.modules.business.schemas import DomainListRead, DomainRecordCreate, DomainRecordUpdate
 from app.modules.business.service import BusinessService
 
@@ -12,7 +14,7 @@ router = APIRouter(dependencies=[Depends(require_api_key)])
 
 @router.get("/domains")
 def list_domains() -> dict[str, list[str]]:
-    return {"domains": sorted(DOMAIN_MODELS)}
+    return {BusinessResponseKey.DOMAINS: supported_domain_values()}
 
 
 @router.get("/{domain}", response_model=DomainListRead)
@@ -20,22 +22,29 @@ def list_records(
     domain: str,
     limit: int = Query(default=50, ge=1, le=500),
     offset: int = Query(default=0, ge=0),
-    status: str | None = None,
+    status_filter: str | None = Query(default=None, alias=BusinessField.STATUS),
     db: Session = Depends(get_db),
 ) -> dict:
     try:
-        total, items = BusinessService(db).list_records(domain, limit, offset, status)
+        total, items = BusinessService(db).list_records(domain, limit, offset, status_filter)
     except KeyError as exc:
-        raise HTTPException(status_code=404, detail=str(exc)) from exc
-    return {"domain": domain, "total": total, "items": items}
+        raise HTTPException(status_code=http_status.HTTP_404_NOT_FOUND, detail=str(exc)) from exc
+    return {
+        BusinessResponseKey.DOMAIN: domain,
+        BusinessResponseKey.TOTAL: total,
+        BusinessResponseKey.ITEMS: items,
+    }
 
 
 @router.get("/{domain}/{record_id}")
 def get_record(domain: str, record_id: int, db: Session = Depends(get_db)) -> dict:
     try:
-        return {"domain": domain, "data": BusinessService(db).get_record(domain, record_id)}
+        return {
+            BusinessResponseKey.DOMAIN: domain,
+            BusinessResponseKey.DATA: BusinessService(db).get_record(domain, record_id),
+        }
     except KeyError as exc:
-        raise HTTPException(status_code=404, detail=str(exc)) from exc
+        raise HTTPException(status_code=http_status.HTTP_404_NOT_FOUND, detail=str(exc)) from exc
 
 
 @router.post("/{domain}")
@@ -53,8 +62,8 @@ def create_record(
             payload.approval_ticket_id,
         )
     except KeyError as exc:
-        raise HTTPException(status_code=404, detail=str(exc)) from exc
-    return {"domain": domain, "data": data}
+        raise HTTPException(status_code=http_status.HTTP_404_NOT_FOUND, detail=str(exc)) from exc
+    return {BusinessResponseKey.DOMAIN: domain, BusinessResponseKey.DATA: data}
 
 
 @router.patch("/{domain}/{record_id}")
@@ -74,5 +83,5 @@ def update_record(
             approval_ticket_id=payload.approval_ticket_id,
         )
     except KeyError as exc:
-        raise HTTPException(status_code=404, detail=str(exc)) from exc
-    return {"domain": domain, "data": data}
+        raise HTTPException(status_code=http_status.HTTP_404_NOT_FOUND, detail=str(exc)) from exc
+    return {BusinessResponseKey.DOMAIN: domain, BusinessResponseKey.DATA: data}