实验课现在直接进入普通排课流程，不再要求先到实验排课模块逐个安排。

普通“添加排课”新增“理论课 / 实验课”类型。
自动排课会分别补足理论学时和实验学时。
实验课只能安排到实验室、实训室、机房、语音室等场地。
发布课表时分别校验理论、实验学时；任一未排足都不能发布。
普通课表及 Excel 导出会标注“实验课”。
历史排课保持不变，迁移后默认识别为理论课；后续新建或修订版本时再补充实验课。

src/Jiaowu.Api/Controllers/ScheduleSettingsController.cs

@@ -3,7 +3,6 @@ using Jiaowu.Api.Domain.Academic;
 using Jiaowu.Api.Domain.Identity;
 using Jiaowu.Api.Infrastructure.Caching;
 using Jiaowu.Api.Infrastructure.Persistence;
-using Jiaowu.Api.Infrastructure.Teaching;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
@@ -110,15 +109,6 @@ public sealed class ScheduleSettingsController(AppDbContext db, IAppCache cache)
         return Ok(tasks.Select(task =>
         {
             constraints.TryGetValue(task.Id, out var constraint);
-            var weeklyHours = task.WeeklyHours;
-            if (task.SchedulingMode == TeachingTaskSchedulingMode.Standard &&
-                TeachingTaskHours.TryResolveRegularWeeklyHours(
-                    task.CourseTotalHours,
-                    task.CoursePracticeHours,
-                    task.StartWeek,
-                    task.EndWeek,
-                    out var regularWeeklyHours))
-                weeklyHours = regularWeeklyHours;
             return new
             {
                 task.Id,
@@ -132,7 +122,7 @@ public sealed class ScheduleSettingsController(AppDbContext db, IAppCache cache)
                 task.Capacity,
                 task.StartWeek,
                 task.EndWeek,
-                WeeklyHours = weeklyHours,
+                task.WeeklyHours,
                 task.CourseTotalHours,
                 task.CoursePracticeHours,
                 task.SchedulingMode,