app/schemas.py

from pydantic import BaseModel
from typing import Optional

class DetectRequest(BaseModel):
    text: str
    threshold: float = 0.0

class DetectResponse(BaseModel):
    final_label: str
    confidence: float
    roberta_confidence: float
    probabilities: dict[str, float]
    llm_triggered: bool
    explanation: Optional[str] = None
    highlighted_phrase: Optional[str] = None
    timing: dict[str, float]