取消新增/Excel 导入档案时自动创建账号。

取消修改人员档案时同步登录账号。
Excel 人员模板恢复为不含“初始密码”。
登录页新增“学生首次登录？自助激活账号”入口。
公开激活地址：http://127.0.0.1:5255/activate

src/Jiaowu.Api/Infrastructure/Auth/PersonnelAccountService.cs

@@ -1,144 +0,0 @@
-using Jiaowu.Api.Domain.Academic;
-using Jiaowu.Api.Domain.Identity;
-using Jiaowu.Api.Infrastructure.Persistence;
-using Microsoft.AspNetCore.Identity;
-using Microsoft.EntityFrameworkCore;
-
-namespace Jiaowu.Api.Infrastructure.Auth;
-
-public sealed class PersonnelAccountService(
-    AppDbContext db,
-    UserManager<ApplicationUser> userManager)
-{
-    public Task<PersonnelAccountResult> EnsureTeacherAccountAsync(
-        Teacher teacher,
-        string? initialPassword,
-        CancellationToken cancellationToken) =>
-        EnsureAccountAsync(
-            teacher.Id,
-            teacher.UserId,
-            teacher.TeacherNumber,
-            teacher.Name,
-            teacher.CollegeId,
-            teacher.Status == TeacherStatus.Active,
-            SystemRoles.Teacher,
-            initialPassword,
-            userId => teacher.UserId = userId,
-            cancellationToken);
-
-    public async Task<PersonnelAccountResult> EnsureStudentAccountAsync(
-        Student student,
-        string? initialPassword,
-        CancellationToken cancellationToken)
-    {
-        var collegeId = await db.AdministrativeClasses.AsNoTracking()
-            .Where(x => x.Id == student.AdministrativeClassId)
-            .Select(x => (Guid?)x.Major!.CollegeId)
-            .FirstOrDefaultAsync(cancellationToken);
-        if (!collegeId.HasValue)
-            return PersonnelAccountResult.Failed("学生所在行政班或学院不存在。");
-
-        return await EnsureAccountAsync(
-            student.Id,
-            student.UserId,
-            student.StudentNumber,
-            student.Name,
-            collegeId.Value,
-            student.Status == StudentStatus.Active,
-            SystemRoles.Student,
-            initialPassword,
-            userId => student.UserId = userId,
-            cancellationToken);
-    }
-
-    private async Task<PersonnelAccountResult> EnsureAccountAsync(
-        Guid profileId,
-        Guid? linkedUserId,
-        string number,
-        string displayName,
-        Guid collegeId,
-        bool isEnabled,
-        string role,
-        string? initialPassword,
-        Action<Guid> linkProfile,
-        CancellationToken cancellationToken)
-    {
-        var normalizedNumber = number.Trim();
-        ApplicationUser? user = null;
-        if (linkedUserId.HasValue)
-            user = await userManager.FindByIdAsync(linkedUserId.Value.ToString());
-        user ??= await userManager.FindByNameAsync(normalizedNumber);
-
-        if (user is null)
-        {
-            if (string.IsNullOrWhiteSpace(initialPassword))
-                return PersonnelAccountResult.Failed("请填写至少 8 位初始密码，以便同时创建登录账号。");
-
-            user = new ApplicationUser
-            {
-                UserName = normalizedNumber,
-                DisplayName = displayName.Trim(),
-                StaffNumber = normalizedNumber,
-                CollegeId = collegeId,
-                IsEnabled = isEnabled,
-                LockoutEnabled = true
-            };
-            var createResult = await userManager.CreateAsync(user, initialPassword);
-            if (!createResult.Succeeded) return Failed(createResult);
-        }
-        else
-        {
-            var occupied = role == SystemRoles.Teacher
-                ? await db.Teachers.AsNoTracking().AnyAsync(
-                    x =>
-                        x.Id != profileId &&
-                        x.UserId == user.Id &&
-                        x.TeacherNumber != normalizedNumber,
-                    cancellationToken)
-                : await db.Students.AsNoTracking().AnyAsync(
-                    x =>
-                        x.Id != profileId &&
-                        x.UserId == user.Id &&
-                        x.StudentNumber != normalizedNumber,
-                    cancellationToken);
-            if (occupied)
-                return PersonnelAccountResult.Failed($"登录账号“{normalizedNumber}”已关联其他人员档案。");
-
-            user.UserName = normalizedNumber;
-            user.DisplayName = displayName.Trim();
-            user.StaffNumber = normalizedNumber;
-            user.CollegeId = collegeId;
-            user.IsEnabled = isEnabled;
-            var updateResult = await userManager.UpdateAsync(user);
-            if (!updateResult.Succeeded) return Failed(updateResult);
-        }
-
-        if (!await userManager.IsInRoleAsync(user, role))
-        {
-            var roleResult = await userManager.AddToRoleAsync(user, role);
-            if (!roleResult.Succeeded) return Failed(roleResult);
-        }
-
-        linkProfile(user.Id);
-        await db.SaveChangesAsync(cancellationToken);
-        return PersonnelAccountResult.Succeeded(user.Id, normalizedNumber);
-    }
-
-    private static PersonnelAccountResult Failed(IdentityResult result) =>
-        PersonnelAccountResult.Failed(string.Join(
-            "；",
-            result.Errors.Select(x => x.Description)));
-}
-
-public sealed record PersonnelAccountResult(
-    bool Success,
-    Guid? UserId,
-    string? UserName,
-    string? Error)
-{
-    public static PersonnelAccountResult Succeeded(Guid userId, string userName) =>
-        new(true, userId, userName, null);
-
-    public static PersonnelAccountResult Failed(string error) =>
-        new(false, null, null, error);
-}