培养方案下放学院维护，学院账号被后端限制在本学院范围；新增按年级、学院、专业联动筛选及维护范围提示。

课程库实行分级维护：学院只能维护本学院的专业必修、专业选修和实践课程；通识课程可查看、引用但不可修改。校级账号保留全校统筹权限。
“排课与课表”已从“教学建设”迁移到“教学运行”，原路由保持不变。
权限规则同时落实在前端和 API，并新增专项测试。

src/Jiaowu.Api/Controllers/CurriculumPlansController.cs

@@ -27,6 +27,7 @@ public sealed class CurriculumPlansController(
         int page = 1,
         int pageSize = 20,
         string? keyword = null,
+        Guid? collegeId = null,
         Guid? majorId = null,
         int? effectiveGrade = null,
         CurriculumPlanStatus? status = null,
@@ -35,6 +36,8 @@ public sealed class CurriculumPlansController(
         page = Math.Max(1, page);
         pageSize = Math.Clamp(pageSize, 10, 100);
         var source = ScopedPlans().AsNoTracking();
+        if (collegeId.HasValue)
+            source = source.Where(x => x.Major!.CollegeId == collegeId.Value);
         if (majorId.HasValue) source = source.Where(x => x.MajorId == majorId);
         if (effectiveGrade.HasValue)
             source = source.Where(x => x.EffectiveGrade == effectiveGrade);
@@ -76,6 +79,49 @@ public sealed class CurriculumPlansController(
         return Ok(new PagedResult<object>(items, total, page, pageSize));
     }
 
+    [HttpGet("filter-options")]
+    public async Task<ActionResult> GetFilterOptions(CancellationToken cancellationToken)
+    {
+        var collegeId = ScopedCollegeId();
+        var majors = db.Majors.AsNoTracking().Where(x => x.IsEnabled);
+        if (collegeId.HasValue)
+            majors = majors.Where(x => x.CollegeId == collegeId.Value);
+
+        var majorOptions = await majors
+            .OrderBy(x => x.College!.SortOrder)
+            .ThenBy(x => x.SortOrder)
+            .ThenBy(x => x.Code)
+            .Select(x => new
+            {
+                x.Id,
+                x.Code,
+                x.Name,
+                x.CollegeId,
+                CollegeName = x.College!.Name,
+                x.SchoolingYears
+            })
+            .ToListAsync(cancellationToken);
+
+        var accessibleCollegeIds = majorOptions
+            .Select(x => x.CollegeId)
+            .Distinct()
+            .ToArray();
+        var colleges = await db.Colleges.AsNoTracking()
+            .Where(x => x.IsEnabled && accessibleCollegeIds.Contains(x.Id))
+            .OrderBy(x => x.SortOrder)
+            .ThenBy(x => x.Code)
+            .Select(x => new { x.Id, x.Code, x.Name })
+            .ToListAsync(cancellationToken);
+        var grades = await ScopedPlans()
+            .AsNoTracking()
+            .Select(x => x.EffectiveGrade)
+            .Distinct()
+            .OrderByDescending(x => x)
+            .ToListAsync(cancellationToken);
+
+        return Ok(new { Colleges = colleges, Majors = majorOptions, Grades = grades });
+    }
+
     [HttpGet("{id:guid}")]
     public async Task<ActionResult> GetPlan(Guid id, CancellationToken cancellationToken)
     {