```

feat(ai_agent): 完善AI适配器和服务功能

- 添加OpenClaw和Hermes健康检查接口
- 实现OpenClaw工具调用功能
- 重构AI适配器使用常量定义
- 增加AI技能系统支持
- 更新配置文件中的默认模型提供者设置

refactor(scheduler): 使用常量替换硬编码值

- 将硬编码的actor值替换为ActorValue常量
- 将receive_id_type替换为FeishuReceiveIdType枚举

refactor(audit): 统一审计日志常量使用

- 将硬编码的actor、source、risk_level等值替换为对应常量
- 更新审核服务中的状态和操作常量引用

refactor(approvals): 标准化审批模块常量使用

- 将applicant默认值替换为ActorValue.API常量
- 使用ApprovalStatus常量替代硬编码状态值
- 更新审核操作常量引用
```

app/modules/business/constants.py

@@ -0,0 +1,117 @@
+from enum import StrEnum
+
+
+class StatusValue(StrEnum):
+    INITIATED = "立项"
+    TODO = "待办"
+    DRAFT = "草稿"
+    POLICY_DRAFT = "草案"
+    VALID = "有效"
+    APPROVING = "审批中"
+    PENDING_APPROVAL = "待审批"
+    PENDING = "pending"
+    ACCEPTED = "验收"
+    COMPLETED_CN = "已完成"
+    DONE_CN = "完成"
+    REVIEWED = "复盘"
+    ARCHIVED = "归档"
+    CLOSED_CN = "关闭"
+    CLOSED = "closed"
+    RESOLVED = "resolved"
+    DONE = "done"
+    COMPLETED = "completed"
+    GENERATED = "已生成"
+    UNKNOWN = "未知"
+    PAID = "已付款"
+    UNPAID = "未付款"
+    UNDELIVERED = "未到货"
+    INVOICE_NOT_RECEIVED = "未收票"
+    NORMAL = "normal"
+    NORMAL_CN = "正常"
+    LATE = "迟到"
+    LEAVE_EARLY = "早退"
+    MISSING_PUNCH = "缺卡"
+    ABSENT = "旷工"
+    ABNORMAL = "异常"
+    OPEN = "open"
+    RUNNING = "running"
+    DRY_RUN = "dry_run"
+
+
+class RiskLevel(StrEnum):
+    LOW = "low"
+    MEDIUM = "medium"
+    HIGH = "high"
+
+
+class PriorityValue(StrEnum):
+    P2 = "P2"
+
+
+class SourceSystem(StrEnum):
+    INTERNAL = "internal"
+    LEGACY_MYSQL = "legacy_mysql"
+
+
+class AccountType(StrEnum):
+    BANK = "bank"
+
+
+class VersionValue(StrEnum):
+    V1_0 = "v1.0"
+
+
+class BusinessDomain(StrEnum):
+    TASKS = "tasks"
+    PROJECTS = "projects"
+    FUND_ACCOUNTS = "fund-accounts"
+    SUPPLIERS = "suppliers"
+
+
+class RiskEventType(StrEnum):
+    OVERDUE_TASK = "overdue_task"
+    DELAYED_PROJECT = "delayed_project"
+    OVER_BUDGET_PROJECT = "over_budget_project"
+    FUND_SAFETY_LINE = "fund_safety_line"
+    SUPPLIER_RISK = "supplier_risk"
+
+
+DONE_STATUSES = frozenset(
+    {
+        StatusValue.DONE_CN,
+        StatusValue.COMPLETED_CN,
+        StatusValue.CLOSED_CN,
+        StatusValue.DONE,
+        StatusValue.COMPLETED,
+        StatusValue.CLOSED,
+    }
+)
+PENDING_APPROVAL_STATUSES = frozenset(
+    {
+        StatusValue.DRAFT,
+        StatusValue.APPROVING,
+        StatusValue.PENDING_APPROVAL,
+        StatusValue.PENDING,
+    }
+)
+PROJECT_CLOSED_STATUSES = frozenset(
+    {
+        StatusValue.ACCEPTED,
+        StatusValue.COMPLETED_CN,
+        StatusValue.REVIEWED,
+        StatusValue.ARCHIVED,
+        StatusValue.CLOSED_CN,
+        StatusValue.CLOSED,
+    }
+)
+ATTENDANCE_ABNORMAL_STATUSES = frozenset(
+    {
+        StatusValue.LATE,
+        StatusValue.LEAVE_EARLY,
+        StatusValue.MISSING_PUNCH,
+        StatusValue.ABSENT,
+        StatusValue.ABNORMAL,
+    }
+)
+SUPPLIER_RISK_LEVELS = frozenset({RiskLevel.MEDIUM, RiskLevel.HIGH})
+CLOSED_RISK_STATUSES = frozenset({StatusValue.CLOSED, StatusValue.RESOLVED})