refactor(detector): more readable

app/database/beatmap.py

@@ -3,6 +3,7 @@ from datetime import datetime
 import hashlib
 from typing import TYPE_CHECKING
 
+from app.calculator import calculate_beatmap_attribute
 from app.config import settings
 from app.models.beatmap import BeatmapAttributes, BeatmapRankStatus
 from app.models.mods import APIMod
@@ -203,7 +204,7 @@ class BeatmapResp(BeatmapBase):
 
 class BannedBeatmaps(SQLModel, table=True):
     __tablename__ = "banned_beatmaps"  # pyright: ignore[reportAssignmentType]
-    id: int = Field(primary_key=True, index=True)
+    id: int | None = Field(primary_key=True, index=True, default=None)
     beatmap_id: int = Field(index=True)
 
 
@@ -221,9 +222,6 @@ async def calculate_beatmap_attributes(
     if await redis.exists(key):
         return BeatmapAttributes.model_validate_json(await redis.get(key))  # pyright: ignore[reportArgumentType]
     resp = await fetcher.get_or_fetch_beatmap_raw(redis, beatmap_id)
-    # 延迟导入以解决循环导入问题
-    from app.calculator import calculate_beatmap_attribute
-
     attr = await asyncio.get_event_loop().run_in_executor(
         None, calculate_beatmap_attribute, resp, ruleset, mods_
     )