"""Sense 错误类型。"""
from __future__ import annotations


class SenseError(Exception):
    status_code = 500
    code = "sense_error"


class EmbedderDown(SenseError):
    """Embedder 不可用（D-G4：决策退化为规则门 + 默认 T2）。"""
    status_code = 503
    code = "embedder_down"


class ArtifactMissing(SenseError):
    """分类器工件缺失（同上降级）。"""
    status_code = 404
    code = "artifact_missing"