feat(后端): 添加授权体系、系统监控与试用期计提

按 2026-11-02 需求补齐计划交付后端能力：
- 角色授权：权限目录化，接口统一准入校验，未登记默认拒绝；
  管理员判断改为按数据库角色重新判定，防止权限码持有者绕过
- 系统监控：单进程采集资源、请求与异常指标，分钟级聚合，
  阈值配置化；敏感配置增加 repr 保护，Redis 密码 URL 转义
- 试用期计提：按回款日判定并写入快照，年度结清与调整单联动；
  人员模型补试用期、离职日期与工资版本历史字段
- 计提模板：公式骨架受控，页面维护名称与参数绑定
- T+ 采集：自动化配置表与进度查询

内置角色禁停用保护对齐模块注释；核算规则版本提为常量并
补充批量核算失败堆栈日志。

影响范围：后端全部模块、数据库迁移 V22-V28
验证：uv run ruff check 通过；922 个单元测试全部通过；
集成测试因本机 MySQL 数据卷被其他容器锁定暂未运行

backend/app/services/tplus/automation.py

@@ -148,7 +148,9 @@ def _cycle_current(session, state):
 
 def tick(session, *, settings=None, now=None):
     settings, now = settings or get_settings(), now or local_now()
-    if not settings.t_plus_automation_enabled:
+    from app.services.tplus.automation_config import configuration
+
+    if not configuration(session, settings)["enabled"]:
         return {"status": "DISABLED", "queued": False}
     if settings.t_plus_stop_file and Path(settings.t_plus_stop_file).exists():
         return {"status": "STOP_REQUESTED", "queued": False}
@@ -243,10 +245,22 @@ def overview(session, *, settings=None, now=None):
     base = {"enabled": settings.t_plus_automation_enabled, "weekday": settings.t_plus_schedule_weekday,
         "time": settings.t_plus_schedule_time, "timezone": "Asia/Shanghai", "worker_phase": "UNKNOWN",
         "heartbeat_at": None, "last_success_at": None, "next_retry_at": None, "alerts": []}
+    from app.services.tplus.automation_config import configuration
+
+    base.update(configuration(session, settings))
     base["stop_requested"] = bool(settings.t_plus_stop_file and Path(settings.t_plus_stop_file).exists())
     try:
         key, database = source_identity(settings)
     except RuntimeError:
+        database = task_service.history_source_database(session)
+        if database:
+            base["last_success_at"] = session.scalar(
+                select(func.max(TPlusSyncBatch.finished_at)).where(
+                    TPlusSyncBatch.source_database == database,
+                    TPlusSyncBatch.status == "SUCCEEDED",
+                    TPlusSyncBatch.sync_mode == "FULL",
+                )
+            )
         return base
     if not inspect(session.connection()).has_table(TPlusAutomationState.__tablename__):
         base["alerts"] = [{"code": "MIGRATION_REQUIRED", "message": "运行状态结构尚未升级"}]
@@ -265,7 +279,7 @@ def overview(session, *, settings=None, now=None):
         alerts.append({"code": "QUEUE_OVERDUE", "message": "采集任务排队超过15分钟", "batch_no": queued.batch_no})
     last_success = session.scalar(select(func.max(TPlusSyncBatch.finished_at)).where(TPlusSyncBatch.source_database == database, TPlusSyncBatch.status == "SUCCEEDED", TPlusSyncBatch.sync_mode == "FULL"))
     base["last_success_at"] = last_success
-    if settings.t_plus_automation_enabled and not base["stop_requested"]:
+    if base["enabled"] and not base["stop_requested"]:
         if last_success is None or now - last_success > timedelta(days=8):
             alerts.append({"code": "SYNC_STALE", "message": "尚无成功采集或超过8天未成功同步"})
         if state is None or state.heartbeat_at is None or now - state.heartbeat_at > timedelta(minutes=2) or state.worker_phase == "STOPPED":