```

feat(core): 添加多API密钥支持和配置字段

添加了api_keys、audit_api_keys、approval_api_keys等字段用于支持多个服务密钥，
新增masked_response_fields用于配置响应掩码字段，以及legacy相关配置项。

feat(core): 增强响应数据掩码功能

扩展mask_configured函数支持域名参数，实现更精确的敏感字段掩码控制，
添加自定义掩码字段配置验证器。

feat(scheduler): 添加遗留系统同步调度任务

集成遗留项目和任务同步到定时调度器中，支持通过配置启用或禁用同步功能，
并可设置不同的执行时间计划。

feat(security): 实现多服务密钥认证机制

重构API密钥验证逻辑，支持单个主密钥和多个配置密钥的混合验证模式，
增加服务密钥启用状态检查和角色映射功能。

feat(task_queue): 扩展现有队列任务处理

为日常简报和周报推送任务添加Celery异步处理支持，新增遗留项目和任务同步任务，
统一任务分发接口。

feat(business): 扩展业务模型字段

为工作任务模型添加外部系统标识和外部ID字段，为风险事件模型增加分配、解决、关闭
等相关字段，并创建风险事件操作记录表。

feat(legacy_mysql): 实现遗留任务同步功能

添加遗留任务查询和同步路由，支持从旧MySQL数据库同步任务数据到内部系统，
包括同步结果统计和运行记录。

refactor(dashboard): 更新仪表板统计数据

增加未分配风险和失败推送运行统计，在概览中显示最新的推送和同步运行记录，
完善数据序列化展示。

fix(feishu): 修复审批事件重复处理

实现审批卡片操作事件的唯一性检查，防止重复审批操作，添加事件审计日志记录。
```

app/modules/legacy_mysql/constants.py

@@ -3,6 +3,7 @@ from enum import StrEnum
 
 class LegacyQueryName(StrEnum):
     PROJECTS = "projects"
+    TASKS = "tasks"
 
 
 class LegacyResponseKey(StrEnum):
@@ -19,6 +20,7 @@ class LegacyResponseKey(StrEnum):
     REASON = "reason"
     SOURCE = "source"
     PROJECT = "project"
+    TASK = "task"
     SYNC_RUN_CODE = "sync_run_code"
     SOURCE_QUERY = "source_query"
     FIELD_MAP = "field_map"
@@ -44,6 +46,22 @@ class LegacyProjectField(StrEnum):
     DESCRIPTION = "description"
 
 
+class LegacyTaskField(StrEnum):
+    ID = "id"
+    CODE = "code"
+    EXTERNAL_ID = "external_id"
+    SOURCE_SYSTEM = "source_system"
+    TITLE = "title"
+    PROJECT_CODE = "project_code"
+    OWNER = "owner"
+    STATUS = "status"
+    PRIORITY = "priority"
+    DUE_DATE = "due_date"
+    COMPLETED_AT = "completed_at"
+    BLOCKER = "blocker"
+    DESCRIPTION = "description"
+
+
 class LegacySyncAction(StrEnum):
     CREATE = "create"
     UPDATE = "update"
@@ -55,6 +73,7 @@ class LegacyQueryError(StrEnum):
     DATABASE_NOT_CONFIGURED = "LEGACY_DATABASE_URL is not configured"
     QUERY_NOT_ALLOWED = "Legacy query is not in the configured allowlist"
     PROJECT_QUERY_NOT_CONFIGURED = "LEGACY_PROJECT_QUERY is not configured. Configure it first."
+    TASK_QUERY_NOT_CONFIGURED = "LEGACY_TASK_QUERY is not configured. Configure it first."
     ONLY_SELECT_ALLOWED = "Only SELECT statements are allowed"
     FORBIDDEN_SQL_TOKEN = "Forbidden SQL token in readonly query"
     INVALID_LIMIT = "Invalid readonly query limit"
@@ -62,9 +81,12 @@ class LegacyQueryError(StrEnum):
 
 
 LEGACY_SYNC_RUN_CODE_PREFIX = "SYNC-PROJECTS"
+LEGACY_TASK_SYNC_RUN_CODE_PREFIX = "SYNC-TASKS"
 LEGACY_PROJECT_QUERY_SOURCE = "LEGACY_PROJECT_QUERY"
+LEGACY_TASK_QUERY_SOURCE = "LEGACY_TASK_QUERY"
 LEGACY_SYNC_MISSING_ID_REASON = "missing external_id/code"
 LEGACY_PROJECT_SYNC_NOTE = "Project sync from readonly legacy MySQL"
+LEGACY_TASK_SYNC_NOTE = "Task sync from readonly legacy MySQL"
 LEGACY_MYSQL_CONNECTION_FAILED_TEMPLATE = "MySQL connection failed: {error}"
 LEGACY_HEALTH_SQL = "SELECT 1"
 LEGACY_SELECT_PREFIX = "select"
@@ -72,4 +94,6 @@ LEGACY_SQL_TRAILING_TERMINATOR = ";"
 LEGACY_LIMIT_MARKER = " limit "
 LEGACY_LIMIT_CLAUSE = " LIMIT :limit"
 LEGACY_PROJECT_CODE_TEMPLATE = "{prefix}-{external_id}"
+LEGACY_TASK_CODE_TEMPLATE = "{prefix}-{external_id}"
 LEGACY_UNNAMED_PROJECT = "未命名项目"
+LEGACY_UNNAMED_TASK = "未命名任务"