"""模型能力矩阵核心服务

AI 开发团队专属垂直能力矩阵的核心业务逻辑：
- 模型-需求智能匹配校验
- 算力成本跟踪与 ROI 核算
- 能力差距检测与预警
- 成本优化建议
"""
import json
from datetime import datetime, timedelta
from typing import Any, Dict, List, Optional, Union

from sqlalchemy import select, and_, func, desc
from sqlalchemy.ext.asyncio import AsyncSession

from ...models import (
    ModelVersion,
    ModelRequirementBinding,
    TruthNode,
    Task,
    AICallLog,
    ModelCapabilityGap,
    CostTracking,
    User,
)
from ..ai_service import AIService


from ...utils.timezone import now_cn_naive