refactor(safety): apply consistent formatting across services and tests

Improved code readability and uniformity by standardizing line breaks, indentation, and inline conditions across safety-related services, models, and tests, including content filters, validation rules, and emergency controls.

backend/app/api/routes/mcp.py

@@ -74,7 +74,9 @@ class ToolInfoResponse(BaseModel):
     name: str = Field(..., description="Tool name")
     description: str | None = Field(None, description="Tool description")
     server_name: str | None = Field(None, description="Server providing the tool")
-    input_schema: dict[str, Any] | None = Field(None, description="JSON schema for input")
+    input_schema: dict[str, Any] | None = Field(
+        None, description="JSON schema for input"
+    )
 
 
 class ToolListResponse(BaseModel):