feat: add bgp observability and admin ui improvements

backend/app/models/alert.py

@@ -5,6 +5,7 @@ from typing import Optional
 from sqlalchemy import Column, Integer, String, DateTime, Text, ForeignKey, Enum as SQLEnum
 from sqlalchemy.orm import relationship
 
+from app.core.time import to_iso8601_utc
 from app.db.session import Base
 
 
@@ -50,8 +51,8 @@ class Alert(Base):
             "acknowledged_by": self.acknowledged_by,
             "resolved_by": self.resolved_by,
             "resolution_notes": self.resolution_notes,
-            "created_at": self.created_at.isoformat() if self.created_at else None,
-            "updated_at": self.updated_at.isoformat() if self.updated_at else None,
-            "acknowledged_at": self.acknowledged_at.isoformat() if self.acknowledged_at else None,
-            "resolved_at": self.resolved_at.isoformat() if self.resolved_at else None,
+            "created_at": to_iso8601_utc(self.created_at),
+            "updated_at": to_iso8601_utc(self.updated_at),
+            "acknowledged_at": to_iso8601_utc(self.acknowledged_at),
+            "resolved_at": to_iso8601_utc(self.resolved_at),
         }