from __future__ import annotations

from typing import Any

MODALITY_CN_MAP: dict[str, str] = {
    "text": "文本",
    "speech": "语音",
    "face": "人脸",
    "ecg": "ECG/HRV",
}


def safe_float(value: Any, default: float | None = None) -> float | None:
    """Convert value to float, returning default on failure."""
    try:
        return float(value)
    except (TypeError, ValueError):
        return default