Remove unused human feedback and websocket message models

Deleted the HumanFeedback, HumanClarification, and WebsocketMessage classes from messages.py as they are no longer used. This helps clean up the codebase and reduces maintenance overhead.

Author: Fr4nc3

src/backend/v3/models/messages.py

@@ -108,24 +108,6 @@ class FinalResultMessage:
     result: str
     summary: str | None = None
 
-@dataclass(slots=True)
-class HumanFeedback(KernelBaseModel):
-    """Message containing human feedback on a step."""
-
-    step_id: Optional[str] = None
-    plan_id: str
-    session_id: str
-    approved: bool
-    human_feedback: Optional[str] = None
-    updated_action: Optional[str] = None
-
-@dataclass(slots=True)
-class HumanClarification(KernelBaseModel):
-    """Message containing human clarification on a plan."""
-
-    plan_id: str
-    session_id: str
-    human_clarification: str
 
 @dataclass(slots=True)
 class ApprovalRequest(KernelBaseModel):
@@ -155,19 +137,3 @@ class WebsocketMessageType(str, Enum):
     USER_CLARIFICATION_REQUEST = "user_clarification_request"
     USER_CLARIFICATION_RESPONSE = "user_clarification_response"
     FINAL_RESULT_MESSAGE = "final_result_message"
-
-
-@dataclass(slots=True)
-class WebsocketMessage:
-    """Generic WebSocket message wrapper."""
-    type: WebsocketMessageType
-    message: Any
-    data: Any
-
-    def to_dict(self) -> Dict[str, Any]:
-        """Convert the WebsocketMessage to a dictionary for JSON serialization."""
-        return {
-            "type": self.type,
-            "data": self.data.to_dict() if hasattr(self.data, 'to_dict') else self.data,
-            "message": self.message.to_dict() if hasattr(self.message, 'to_dict') else self.message
-        }