style: format code for improved readability and consistency across multiple files

backend/app/schemas/agents.py

@@ -8,8 +8,8 @@ from typing import Any
 from uuid import UUID
 
 from pydantic import Field, field_validator
-from sqlmodel._compat import SQLModelConfig
 from sqlmodel import SQLModel
+from sqlmodel._compat import SQLModelConfig
 
 from app.schemas.common import NonEmptyStr
 

backend/app/schemas/errors.py

@@ -31,7 +31,10 @@ class LLMErrorResponse(SQLModel):
             "Error payload. Agents should rely on `code` when present and default "
             "to `message` for fallback display."
         ),
-        examples=["Invalid payload for lead escalation.", {"code": "not_found", "message": "Agent not found."}],
+        examples=[
+            "Invalid payload for lead escalation.",
+            {"code": "not_found", "message": "Agent not found."},
+        ],
     )
     request_id: str | None = Field(
         default=None,

backend/app/schemas/gateway_coordination.py

@@ -6,8 +6,8 @@ from typing import Literal
 from uuid import UUID
 
 from pydantic import Field
-from sqlmodel._compat import SQLModelConfig
 from sqlmodel import SQLModel
+from sqlmodel._compat import SQLModelConfig
 
 from app.schemas.common import NonEmptyStr
 

backend/app/schemas/health.py

@@ -13,4 +13,3 @@ class HealthStatusResponse(SQLModel):
         description="Indicates whether the probe check succeeded.",
         examples=[True],
     )
-