feat(web): migrate classroom reservations

Add React workflows for teaching eligibility, course equivalency rules, enrollment management, and campus wallet administration. Preserve role-aware navigation, college scope, audit trails, and existing server authorization.

src/Jiaowu.Api/Controllers/CourseAdjustmentsController.cs

@@ -170,6 +170,25 @@ public sealed class CourseAdjustmentsController(
         return Ok(new { Task = task, Sessions = sessions, Classrooms = classrooms, Periods = periods });
     }
 
+    [HttpGet("teacher-options")]
+    [Authorize(Roles = Applicants)]
+    public async Task<ActionResult> GetTeacherOptions(CancellationToken cancellationToken)
+    {
+        return Ok(await db.Teachers.AsNoTracking()
+            .Where(x => x.Status == TeacherStatus.Active && !x.IsArchived)
+            .OrderBy(x => x.College!.Name)
+            .ThenBy(x => x.TeacherNumber)
+            .Select(x => new
+            {
+                x.Id,
+                x.TeacherNumber,
+                x.Name,
+                x.Title,
+                CollegeName = x.College!.Name
+            })
+            .ToListAsync(cancellationToken));
+    }
+
     // ═══════════════ My adjustments ═══════════════
 
     [HttpGet("mine")]
@@ -611,7 +630,8 @@ public sealed class CourseAdjustmentsController(
                     return ValidationProblem("请选择代课教师。");
                 if (!await db.Teachers.AnyAsync(x =>
                         x.Id == request.SubstituteTeacherId &&
-                        x.Status == TeacherStatus.Active, cancellationToken))
+                        x.Status == TeacherStatus.Active &&
+                        !x.IsArchived, cancellationToken))
                     return ValidationProblem("代课教师不存在或已离职。");
                 break;
             case CourseAdjustmentType.Cancel:

tests/Jiaowu.Api.Tests/CourseAdjustmentsControllerTests.cs

@@ -6,11 +6,46 @@ using Jiaowu.Api.Infrastructure.Persistence;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Data.Sqlite;
 using Microsoft.EntityFrameworkCore;
+using System.Text.Json;
 
 namespace Jiaowu.Api.Tests;
 
 public sealed class CourseAdjustmentsControllerTests
 {
+    [Fact]
+    public async Task TeacherOptions_ReturnOnlyActiveNonArchivedTeachers()
+    {
+        await using var fixture = await Fixture.CreateAsync();
+        var collegeId = await fixture.Db.Courses.Select(x => x.CollegeId).SingleAsync();
+        fixture.Db.Teachers.AddRange(
+            new Teacher
+            {
+                TeacherNumber = "T002",
+                Name = "离职教师",
+                CollegeId = collegeId,
+                Status = TeacherStatus.Retired
+            },
+            new Teacher
+            {
+                TeacherNumber = "T003",
+                Name = "归档教师",
+                CollegeId = collegeId,
+                IsArchived = true
+            });
+        await fixture.Db.SaveChangesAsync();
+
+        var controller = new CourseAdjustmentsController(
+            fixture.Db,
+            new TestScope(fixture.TeacherUserId, DataScope.Self, SystemRoles.Teacher));
+        var result = await controller.GetTeacherOptions(CancellationToken.None);
+
+        var ok = Assert.IsType<OkObjectResult>(result);
+        var json = JsonSerializer.Serialize(ok.Value);
+        Assert.Contains("T001", json);
+        Assert.DoesNotContain("T002", json);
+        Assert.DoesNotContain("T003", json);
+    }
+
     [Fact]
     public async Task Reschedule_MovesOnlyTheSelectedOccurrence()
     {