feat: 性能优化 + 设备总览轨迹展示 + 广播指令API

性能: SQLite WAL模式、aiohttp Session复用、TCP连接锁+空闲超时、
device_id缓存、WebSocket并发广播、API Key认证缓存、围栏N+1查询
批量化、逆地理编码并行化、新增5个DB索引、日志降级DEBUG

功能: 广播指令API(broadcast)、exclude_type低精度后端过滤、
前端设备总览Tab+多设备轨迹叠加+高亮联动+搜索+专属颜色

via [HAPI](https://hapi.run)

Co-Authored-By: HAPI <noreply@hapi.run>

app/routers/locations.py

@@ -31,6 +31,7 @@ router = APIRouter(prefix="/api/locations", tags=["Locations / 位置数据"])
 async def list_locations(
     device_id: int | None = Query(default=None, description="设备ID / Device ID"),
     location_type: str | None = Query(default=None, description="定位类型 / Location type (gps/lbs/wifi)"),
+    exclude_type: str | None = Query(default=None, description="排除定位类型前缀 / Exclude location type prefix (e.g. lbs)"),
     start_time: datetime | None = Query(default=None, description="开始时间 / Start time (ISO 8601)"),
     end_time: datetime | None = Query(default=None, description="结束时间 / End time (ISO 8601)"),
     page: int = Query(default=1, ge=1, description="页码 / Page number"),
@@ -45,6 +46,7 @@ async def list_locations(
         db,
         device_id=device_id,
         location_type=location_type,
+        exclude_type=exclude_type,
         start_time=start_time,
         end_time=end_time,
         page=page,