feat(database): 新增 Score 数据库模型并更新 User 关系

- 创建 Score 类作为成绩数据库模型，对应 osu! API 中的 Score 对象
- 在 User 模型中添加与 Score 的关系- 优化了数据库表结构，增加了索引和字段约束

app/database/score.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from datetime import datetime
+from . import User
+from sqlalchemy import Column, DateTime
+from sqlmodel import Field, Relationship, SQLModel
+
+class Score(SQLModel, table=True):
+    """
+    成绩数据库模型，对应osu! API中的Score对象
+    参考: https://osu.ppy.sh/docs/index.html#score
+    数据库表结构参考: migrations/base.sql
+    """
+    __tablename__ = "scores"
+
+    # 基本字段
+    id: int = Field(primary_key=True)
+    map_md5: str = Field(max_length=32, index=True)
+    score: int
+    pp: float
+    acc: float
+    max_combo: int
+    mods: int = Field(index=True)
+    n300: int
+    n100: int
+    n50: int
+    nmiss: int
+    ngeki: int
+    nkatu: int
+    grade: str = Field(default="N", max_length=2)
+    status: int = Field(index=True)
+    mode: int = Field(index=True)
+    play_time: datetime = Field(sa_column=Column(DateTime, index=True))
+    time_elapsed: int
+    client_flags: int
+    userid: int = Field(index=True)
+    perfect: bool
+    online_checksum: str = Field(max_length=32, index=True)
+
+    # 关联关系
+    user: "User" = Relationship(back_populates="scores")

app/database/user.py

@@ -1,4 +1,6 @@
 # ruff: noqa: I002
+from __future__ import annotations
+
 from dataclasses import dataclass
 from datetime import datetime
 from typing import Optional
@@ -95,7 +97,6 @@ class User(SQLModel, table=True):
         back_populates="user"
     )
 
-
 # ============================================
 # Lazer API 专用表模型
 # ============================================