fix: auto-fix code issues (cron)

- 修复重复导入/字段
- 修复异常处理
- 修复PEP8格式问题
- 添加类型注解

backend/ops_manager.py

@@ -29,6 +29,7 @@ import httpx
 # Database path
 DB_PATH = os.path.join(os.path.dirname(__file__), "insightflow.db")
 
+
 class AlertSeverity(StrEnum):
     """告警严重级别 P0-P3"""
 
@@ -37,6 +38,7 @@ class AlertSeverity(StrEnum):
     P2 = "p2"  # 一般 - 部分功能受影响，需要4小时内处理
     P3 = "p3"  # 轻微 - 非核心功能问题，24小时内处理
 
+
 class AlertStatus(StrEnum):
     """告警状态"""
 
@@ -45,6 +47,7 @@ class AlertStatus(StrEnum):
     ACKNOWLEDGED = "acknowledged"  # 已确认
     SUPPRESSED = "suppressed"  # 已抑制
 
+
 class AlertChannelType(StrEnum):
     """告警渠道类型"""
 
@@ -57,6 +60,7 @@ class AlertChannelType(StrEnum):
     SMS = "sms"
     WEBHOOK = "webhook"
 
+
 class AlertRuleType(StrEnum):
     """告警规则类型"""
 
@@ -65,6 +69,7 @@ class AlertRuleType(StrEnum):
     PREDICTIVE = "predictive"  # 预测性告警
     COMPOSITE = "composite"  # 复合告警
 
+
 class ResourceType(StrEnum):
     """资源类型"""
 
@@ -77,6 +82,7 @@ class ResourceType(StrEnum):
     CACHE = "cache"
     QUEUE = "queue"
 
+
 class ScalingAction(StrEnum):
     """扩缩容动作"""
 
@@ -84,6 +90,7 @@ class ScalingAction(StrEnum):
     SCALE_DOWN = "scale_down"  # 缩容
     MAINTAIN = "maintain"  # 保持
 
+
 class HealthStatus(StrEnum):
     """健康状态"""
 
@@ -92,6 +99,7 @@ class HealthStatus(StrEnum):
     UNHEALTHY = "unhealthy"
     UNKNOWN = "unknown"
 
+
 class BackupStatus(StrEnum):
     """备份状态"""
 
@@ -101,6 +109,7 @@ class BackupStatus(StrEnum):
     FAILED = "failed"
     VERIFIED = "verified"
 
+
 @dataclass
 class AlertRule:
     """告警规则"""
@@ -124,6 +133,7 @@ class AlertRule:
     updated_at: str
     created_by: str
 
+
 @dataclass
 class AlertChannel:
     """告警渠道配置"""
@@ -141,6 +151,7 @@ class AlertChannel:
     created_at: str
     updated_at: str
 
+
 @dataclass
 class Alert:
     """告警实例"""
@@ -164,6 +175,7 @@ class Alert:
     notification_sent: dict[str, bool]  # 渠道发送状态
     suppression_count: int  # 抑制计数
 
+
 @dataclass
 class AlertSuppressionRule:
     """告警抑制规则"""
@@ -177,6 +189,7 @@ class AlertSuppressionRule:
     created_at: str
     expires_at: str | None
 
+
 @dataclass
 class AlertGroup:
     """告警聚合组"""
@@ -188,6 +201,7 @@ class AlertGroup:
     created_at: str
     updated_at: str
 
+
 @dataclass
 class ResourceMetric:
     """资源指标"""
@@ -202,6 +216,7 @@ class ResourceMetric:
     timestamp: str
     metadata: dict
 
+
 @dataclass
 class CapacityPlan:
     """容量规划"""
@@ -217,6 +232,7 @@ class CapacityPlan:
     estimated_cost: float
     created_at: str
 
+
 @dataclass
 class AutoScalingPolicy:
     """自动扩缩容策略"""
@@ -237,6 +253,7 @@ class AutoScalingPolicy:
     created_at: str
     updated_at: str
 
+
 @dataclass
 class ScalingEvent:
     """扩缩容事件"""
@@ -254,6 +271,7 @@ class ScalingEvent:
     completed_at: str | None
     error_message: str | None
 
+
 @dataclass
 class HealthCheck:
     """健康检查配置"""
@@ -274,6 +292,7 @@ class HealthCheck:
     created_at: str
     updated_at: str
 
+
 @dataclass
 class HealthCheckResult:
     """健康检查结果"""
@@ -287,6 +306,7 @@ class HealthCheckResult:
     details: dict
     checked_at: str
 
+
 @dataclass
 class FailoverConfig:
     """故障转移配置"""
@@ -304,6 +324,7 @@ class FailoverConfig:
     created_at: str
     updated_at: str
 
+
 @dataclass
 class FailoverEvent:
     """故障转移事件"""
@@ -319,6 +340,7 @@ class FailoverEvent:
     completed_at: str | None
     rolled_back_at: str | None
 
+
 @dataclass
 class BackupJob:
     """备份任务"""
@@ -338,6 +360,7 @@ class BackupJob:
     created_at: str
     updated_at: str
 
+
 @dataclass
 class BackupRecord:
     """备份记录"""
@@ -354,6 +377,7 @@ class BackupRecord:
     error_message: str | None
     storage_path: str
 
+
 @dataclass
 class CostReport:
     """成本报告"""
@@ -368,6 +392,7 @@ class CostReport:
     anomalies: list[dict]  # 异常检测
     created_at: str
 
+
 @dataclass
 class ResourceUtilization:
     """资源利用率"""
@@ -383,6 +408,7 @@ class ResourceUtilization:
     report_date: str
     recommendations: list[str]
 
+
 @dataclass
 class IdleResource:
     """闲置资源"""
@@ -399,6 +425,7 @@ class IdleResource:
     recommendation: str
     detected_at: str
 
+
 @dataclass
 class CostOptimizationSuggestion:
     """成本优化建议"""
@@ -418,6 +445,7 @@ class CostOptimizationSuggestion:
     created_at: str
     applied_at: str | None
 
+
 class OpsManager:
     """运维与监控管理主类"""
 
@@ -3065,9 +3093,11 @@ class OpsManager:
             applied_at=row["applied_at"],
         )
 
+
 # Singleton instance
 _ops_manager = None
 
+
 def get_ops_manager() -> OpsManager:
     global _ops_manager
     if _ops_manager is None: