生产环境

README.md

@@ -12,17 +12,14 @@
 
 ## 本地开发：热更新模式
 
-本地开发固定使用 SQLite。首次启动会自动创建 `src/Jiaowu.Api/data/jiaowu-dev.sqlite` 并写入演示组织数据。
-
-Development 环境还会按业务编码幂等补齐一套大规模测试数据：16 个常见学院或教学单位、52 个常见本科专业、每个专业 2 个 2026 级行政班、每班 35 名学生、每学院 8 名教师，以及覆盖公共必修、公共选修、专业必修、专业选修和实践教学的 150 余门课程。测试教师同时生成当前学期已审核通过的授课资格；重复启动不会重复累加数据，也不会覆盖已有记录。
-
-只执行数据库迁移和测试数据补齐、不启动 Web 服务时，可以运行：
-
-```powershell
-dotnet run --project src/Jiaowu.Api -- --seed-only
-```
+本地开发固定使用 SQLite。首次启动会自动创建空的
+`src/Jiaowu.Api/data/jiaowu-dev.sqlite`，只初始化系统角色和课程分类，不再写入
+演示组织、人员、课程、业务记录或内置测试账号。
 
 ```powershell
+$env:SeedAdmin__UserName = 'admin'
+$env:SeedAdmin__Password = '请替换为本机开发密码'
+$env:SeedAdmin__DisplayName = '系统管理员'
 dotnet run --project src/Jiaowu.Api
 ```
 
@@ -34,17 +31,8 @@ npm install
 npm run dev
 ```
 
-访问 `http://localhost:5173`。本地开发会自动创建以下分级权限账号：
-
-| 数据范围 | 账号 | 密码 |
-| --- | --- | --- |
-| 超级管理员 | `admin` | `Admin@123456` |
-| 校级教务 | `academic` | `Academic@123456` |
-| 学院教务 | `college` | `College@123456` |
-| 所带班级 | `counselor` | `Counselor@123456` |
-| 教师本人 | `teacher` | `Teacher@123456` |
-| 学生本人 | `student` | `Student@123456` |
-| 领导查看 | `leader` | `Leader@123456` |
+访问 `http://localhost:5173`。首次创建管理员后可以清除三个
+`SeedAdmin__*` 环境变量；后续账号和基础数据均通过管理界面维护。
 
 ## 本地开发：单服务模式
 
@@ -57,36 +45,73 @@ dotnet run --project src/Jiaowu.Api
 
 访问 `http://localhost:5255`。`/api` 和静态页面由同一个 ASP.NET Core 服务提供，`/base-data` 等前端路由刷新时也会回退到 `index.html`。
 
-## MySQL 部署
+## MySQL 8.4 生产部署
 
 非 Development 环境只允许使用 MySQL。`dotnet publish` 会自动执行 `npm ci` 和 `npm run build`，并将 Vue 静态文件放入发布目录的 `wwwroot`：
 
 ```powershell
 $env:ASPNETCORE_ENVIRONMENT = 'Production'
 $env:Database__Provider = 'MySql'
-$env:ConnectionStrings__MySql = 'Server=127.0.0.1;Port=3306;Database=jiaowu;User=YOUR_USER;Password=YOUR_PASSWORD;'
+$env:ConnectionStrings__MySql = 'Server=db.example.edu.cn;Port=3306;Database=jiaowu;User=YOUR_USER;Password=YOUR_PASSWORD;SslMode=VerifyFull;SslCa=C:\certs\mysql-ca.pem;'
 $env:Jwt__Key = '至少32字节的随机生产密钥'
+$env:AllowedHosts = 'jiaowu.example.edu.cn'
 dotnet publish src/Jiaowu.Api -c Release -o .artifacts/publish
-.artifacts/publish/Jiaowu.Api.exe
 ```
 
 如需在特殊流水线中跳过自动前端构建，可传入 `-p:BuildFrontendOnPublish=false`。
 
-生产环境不会创建默认管理员。首次部署前可以临时配置 `SeedAdmin__UserName`、`SeedAdmin__Password` 和 `SeedAdmin__DisplayName`，账号创建后移除这些配置。
+数据库应明确使用 `utf8mb4`；MySQL 8.4 的默认排序规则为
+`utf8mb4_0900_ai_ci`。新建数据库时可执行：
+
+```sql
+CREATE DATABASE `jiaowu`
+  CHARACTER SET utf8mb4
+  COLLATE utf8mb4_0900_ai_ci;
+```
+
+发布前使用具备 DDL 权限的迁移账号单独执行迁移：
+
+```powershell
+& '.artifacts\publish\Jiaowu.Api.exe' --migrate-only
+```
+
+迁移成功后，改用仅具备应用所需 DML 权限的运行账号并启动服务：
+
+```powershell
+& '.artifacts\publish\Jiaowu.Api.exe'
+```
+
+`Database:ApplyMigrationsOnStartup` 默认关闭。普通启动会检查待执行迁移并在架构落后时
+直接失败，避免多实例同时执行 DDL。只有明确接受启动期 DDL 风险的单实例部署才应将
+`Database__ApplyMigrationsOnStartup` 设为 `true`。
+
+生产环境不会创建默认管理员。首次部署可以临时配置
+`SeedAdmin__UserName`、`SeedAdmin__Password` 和 `SeedAdmin__DisplayName`，
+账号创建后立即移除这些配置。
 
 生产数据库使用 MySQL 专用 EF Core 迁移。部署前先恢复仓库工具并检查迁移：
 
 ```powershell
 dotnet tool restore
-dotnet ef migrations list --project src/Jiaowu.Api --startup-project src/Jiaowu.Api
+dotnet ef migrations list --no-connect --project src/Jiaowu.Api --startup-project src/Jiaowu.Api
 ```
 
-应用启动时会自动执行尚未应用的 MySQL 迁移。SQLite 只用于本地开发：新库通过 `EnsureCreated` 建立，已有开发库通过轻量、版本化的本地升级脚本补齐结构，不需要手动删除数据文件。SQLite 文件不能用于生产。
+不要使用当前提供程序生成的 `dotnet ef migrations script --idempotent` 作为 MySQL
+部署脚本；其条件块不是 MySQL 8.4 可直接执行的语法。应使用上述
+`--migrate-only` 入口，或在明确知道目标迁移状态时生成非幂等脚本并先做备份。
+MySQL 的 DDL 会隐式提交，迁移不能依赖外层事务整体回滚。
+
+SQLite 只用于本地开发：新库通过 `EnsureCreated` 建立，已有开发库通过轻量、版本化的
+本地升级脚本补齐结构，不需要手动删除数据文件。SQLite 文件不能用于生产。
+
+服务探针：
+
+- `/health/live`：只检查进程存活。
+- `/health`、`/health/ready`：实际检查数据库连接，失败时返回 HTTP 503。
 
 ## 验证
 
 ```powershell
 dotnet test Jiaowu.slnx
 npm --prefix web run build
-pwsh.exe -NoLogo -NoProfile -NonInteractive -File scripts/smoke-test.ps1
 ```

scripts/smoke-test.ps1

@@ -1,831 +0,0 @@
-param(
-    [string] $ApiExecutablePath,
-    [string] $ApiContentRoot
-)
-
-$ErrorActionPreference = 'Stop'
-
-$workspaceRoot = Split-Path -Parent $PSScriptRoot
-$apiExecutable = if ([string]::IsNullOrWhiteSpace($ApiExecutablePath)) {
-    Join-Path $workspaceRoot 'src/Jiaowu.Api/bin/Debug/net10.0/Jiaowu.Api.exe'
-}
-else {
-    [System.IO.Path]::GetFullPath($ApiExecutablePath, $workspaceRoot)
-}
-$apiWorkingDirectory = if ([string]::IsNullOrWhiteSpace($ApiContentRoot)) {
-    Join-Path $workspaceRoot 'src/Jiaowu.Api'
-}
-else {
-    [System.IO.Path]::GetFullPath($ApiContentRoot, $workspaceRoot)
-}
-$stdoutPath = Join-Path $env:TEMP 'jiaowu-api-smoke.out.log'
-$stderrPath = Join-Path $env:TEMP 'jiaowu-api-smoke.err.log'
-$courseExcelToken = [guid]::NewGuid().ToString('N')
-$courseTemplatePath = Join-Path $env:TEMP "jiaowu-course-template-$courseExcelToken.xlsx"
-$courseExportPath = Join-Path $env:TEMP "jiaowu-course-export-$courseExcelToken.xlsx"
-$env:ASPNETCORE_ENVIRONMENT = 'Development'
-$env:ASPNETCORE_URLS = 'http://localhost:5255'
-$startParameters = @{
-    FilePath               = $apiExecutable
-    WorkingDirectory       = $apiWorkingDirectory
-    WindowStyle            = 'Hidden'
-    RedirectStandardOutput = $stdoutPath
-    RedirectStandardError  = $stderrPath
-    PassThru               = $true
-}
-$process = Start-Process @startParameters
-
-try {
-    $healthy = $false
-    for ($attempt = 0; $attempt -lt 30; $attempt++) {
-        Start-Sleep -Milliseconds 500
-        try {
-            $health = Invoke-RestMethod -Uri 'http://localhost:5255/health' -TimeoutSec 2
-            $healthy = $true
-            break
-        }
-        catch {
-            # The API may still be starting.
-        }
-    }
-
-    if (-not $healthy) {
-        Get-Content -LiteralPath $stdoutPath -ErrorAction SilentlyContinue
-        Get-Content -LiteralPath $stderrPath -ErrorAction SilentlyContinue
-        throw 'API did not become healthy.'
-    }
-
-    $loginBody = @{
-        userName = 'admin'
-        password = 'Admin@123456'
-    } | ConvertTo-Json
-    $loginParameters = @{
-        Method      = 'Post'
-        Uri         = 'http://localhost:5255/api/auth/login'
-        ContentType = 'application/json'
-        Body        = $loginBody
-    }
-    $login = Invoke-RestMethod @loginParameters
-    $headers = @{ Authorization = "Bearer $($login.token)" }
-    $dashboard = Invoke-RestMethod -Uri 'http://localhost:5255/api/dashboard' -Headers $headers
-    $campuses = Invoke-RestMethod -Uri 'http://localhost:5255/api/base-data/campuses' -Headers $headers
-    $classes = Invoke-RestMethod -Uri 'http://localhost:5255/api/base-data/classes' -Headers $headers
-    $counselors = Invoke-RestMethod -Uri 'http://localhost:5255/api/base-data/counselors' -Headers $headers
-    $assignedClassCount = @($classes | Where-Object {
-        $null -ne $_.counselorUserId -and
-        @($counselors).id -contains $_.counselorUserId
-    }).Count
-    if ($assignedClassCount -lt 1) {
-        throw 'No administrative class is linked to a counselor account.'
-    }
-    $teachers = Invoke-RestMethod -Uri 'http://localhost:5255/api/personnel/teachers?page=1&pageSize=10' -Headers $headers
-    $students = Invoke-RestMethod -Uri 'http://localhost:5255/api/personnel/students?page=1&pageSize=10' -Headers $headers
-    $courses = Invoke-RestMethod -Uri 'http://localhost:5255/api/courses?page=1&pageSize=10' -Headers $headers
-    $courseCategories = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/base-data/course-categories' `
-        -Headers $headers
-    if (@($courseCategories).Count -lt 10 -or
-        @($courses.items | Where-Object { $null -eq $_.courseCategoryId }).Count -gt 0) {
-        throw 'Course categories were not seeded or assigned to all courses.'
-    }
-    Invoke-WebRequest `
-        -Uri 'http://localhost:5255/api/courses/template' `
-        -Headers $headers `
-        -OutFile $courseTemplatePath |
-        Out-Null
-    Invoke-WebRequest `
-        -Uri 'http://localhost:5255/api/courses/export' `
-        -Headers $headers `
-        -OutFile $courseExportPath |
-        Out-Null
-    if ((Get-Item -LiteralPath $courseTemplatePath).Length -lt 1 -or
-        (Get-Item -LiteralPath $courseExportPath).Length -lt 1) {
-        throw 'Course Excel template or export is empty.'
-    }
-    $courseImport = Invoke-RestMethod `
-        -Method Post `
-        -Uri 'http://localhost:5255/api/courses/import' `
-        -Headers $headers `
-        -Form @{ file = Get-Item -LiteralPath $courseExportPath }
-    if ($courseImport.created -ne 0 -or
-        $courseImport.updated -ne $courses.total -or
-        $courseImport.total -ne $courses.total) {
-        throw 'Course Excel round-trip did not update the expected records.'
-    }
-    $curriculumPlans = Invoke-RestMethod -Uri 'http://localhost:5255/api/curriculum-plans?page=1&pageSize=10' -Headers $headers
-    if ($curriculumPlans.total -gt 0) {
-        $curriculumDetail = Invoke-RestMethod `
-            -Uri "http://localhost:5255/api/curriculum-plans/$($curriculumPlans.items[0].id)" `
-            -Headers $headers
-    }
-    $teachingTasks = Invoke-RestMethod -Uri 'http://localhost:5255/api/teaching-tasks?page=1&pageSize=10' -Headers $headers
-    $schedulePlans = Invoke-RestMethod -Uri 'http://localhost:5255/api/schedules/plans' -Headers $headers
-    if (@($schedulePlans).Count -gt 0) {
-        $scheduleDetail = Invoke-RestMethod `
-            -Uri "http://localhost:5255/api/schedules/plans/$($schedulePlans[0].id)" `
-            -Headers $headers
-    }
-    $selectionRounds = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/course-selections/rounds' `
-        -Headers $headers
-    if (@($selectionRounds).Count -lt 1) {
-        throw 'Development course-selection round was not seeded.'
-    }
-    $activeSelectionRound = @($selectionRounds) |
-        Where-Object { $_.isAvailableNow } |
-        Select-Object -First 1
-    if ($null -eq $activeSelectionRound) {
-        throw 'No course-selection round is open for the smoke test.'
-    }
-    $selectionOfferings = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/course-selections/rounds/$($activeSelectionRound.id)/offerings" `
-        -Headers $headers
-    if (@($selectionOfferings).Count -lt 1) {
-        throw 'Development course-selection offering was not seeded.'
-    }
-    $managedUsers = Invoke-RestMethod -Uri 'http://localhost:5255/api/users' -Headers $headers
-    $teacherAccount = @($managedUsers) |
-        Where-Object { $_.userName -eq 'teacher' } |
-        Select-Object -First 1
-    if ($null -eq $teacherAccount) {
-        throw 'Development teacher account was not seeded.'
-    }
-    $teacherAccessBody = @{
-        staffNumber = $teacherAccount.staffNumber
-        collegeId = $teacherAccount.collegeId
-        roles = @('Teacher')
-    } | ConvertTo-Json
-    Invoke-RestMethod `
-        -Method Put `
-        -Uri "http://localhost:5255/api/users/$($teacherAccount.id)/roles" `
-        -Headers $headers `
-        -ContentType 'application/json' `
-        -Body $teacherAccessBody
-
-    $scopeScenarios = @(
-        @{
-            UserName = 'college'; Password = 'College@123456'; Scope = 'College'
-            Teachers = 2; Students = 3; Courses = 3
-        },
-        @{
-            UserName = 'counselor'; Password = 'Counselor@123456'; Scope = 'Class'
-            Teachers = 1; Students = 3; Courses = 1
-        },
-        @{
-            UserName = 'teacher'; Password = 'Teacher@123456'; Scope = 'Self'
-            Teachers = 1; Students = 3; Courses = 1
-        },
-        @{
-            UserName = 'student'; Password = 'Student@123456'; Scope = 'Self'
-            Teachers = 0; Students = 1; Courses = 1
-        }
-    )
-    $scopeChecks = foreach ($scenario in $scopeScenarios) {
-        $scenarioLoginBody = @{
-            userName = $scenario.UserName
-            password = $scenario.Password
-        } | ConvertTo-Json
-        $scenarioLogin = Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/auth/login' `
-            -ContentType 'application/json' `
-            -Body $scenarioLoginBody
-        $scenarioHeaders = @{ Authorization = "Bearer $($scenarioLogin.token)" }
-        $scenarioTeachers = Invoke-RestMethod `
-            -Uri 'http://localhost:5255/api/personnel/teachers?page=1&pageSize=10' `
-            -Headers $scenarioHeaders
-        $scenarioStudents = Invoke-RestMethod `
-            -Uri 'http://localhost:5255/api/personnel/students?page=1&pageSize=10' `
-            -Headers $scenarioHeaders
-        $scenarioCourses = Invoke-RestMethod `
-            -Uri 'http://localhost:5255/api/courses?page=1&pageSize=10' `
-            -Headers $scenarioHeaders
-        if ($scenarioLogin.user.effectiveDataScope -ne $scenario.Scope -or
-            $scenarioTeachers.total -ne $scenario.Teachers -or
-            $scenarioStudents.total -ne $scenario.Students -or
-            $scenarioCourses.total -ne $scenario.Courses) {
-            throw ("Data-scope check failed for {0}: scope={1}, teachers={2}, students={3}, courses={4}." -f
-                $scenario.UserName,
-                $scenarioLogin.user.effectiveDataScope,
-                $scenarioTeachers.total,
-                $scenarioStudents.total,
-                $scenarioCourses.total)
-        }
-        "$($scenario.UserName):$($scenario.Scope)"
-    }
-
-    $studentLoginBody = @{
-        userName = 'student'
-        password = 'Student@123456'
-    } | ConvertTo-Json
-    $studentLogin = Invoke-RestMethod `
-        -Method Post `
-        -Uri 'http://localhost:5255/api/auth/login' `
-        -ContentType 'application/json' `
-        -Body $studentLoginBody
-    $studentHeaders = @{ Authorization = "Bearer $($studentLogin.token)" }
-    $studentOptions = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/course-selections/student/options?roundId=$($activeSelectionRound.id)" `
-        -Headers $studentHeaders
-    $studentOffering = @($studentOptions.offerings) | Select-Object -First 1
-    if ($null -eq $studentOffering) {
-        throw 'Student has no eligible course-selection offering.'
-    }
-    if ($studentOffering.enrollmentStatus -ne 'Enrolled') {
-        $enrollmentBody = @{ offeringId = $studentOffering.id } | ConvertTo-Json
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/course-selections/student/enrollments' `
-            -Headers $studentHeaders `
-            -ContentType 'application/json' `
-            -Body $enrollmentBody |
-            Out-Null
-    }
-    $studentEnrollments = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/course-selections/student/enrollments?academicTermId=$($activeSelectionRound.academicTermId)" `
-        -Headers $studentHeaders
-    $activeEnrollments = @($studentEnrollments) |
-        Where-Object { $_.status -eq 'Enrolled' }
-    if ($activeEnrollments.Count -lt 1) {
-        throw 'Student course enrollment was not persisted.'
-    }
-    $selectionRoster = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/course-selections/offerings/$($studentOffering.id)/roster" `
-        -Headers $headers
-    if ($selectionRoster.enrolledCount -lt 1) {
-        throw 'Course-selection roster did not include the selected student.'
-    }
-
-    $gradeTasks = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/grades/sheets' `
-        -Headers $headers
-    $gradeTask = @($gradeTasks) |
-        Where-Object { $null -ne $_.sheet } |
-        Select-Object -First 1
-    if ($null -eq $gradeTask) {
-        throw 'Development grade sheet was not seeded.'
-    }
-    $gradeDetail = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/grades/sheets/$($gradeTask.sheet.id)" `
-        -Headers $headers
-    if (@($gradeDetail.sheet.records).Count -lt 1) {
-        throw 'Development grade sheet has no student records.'
-    }
-
-    $teacherLoginBody = @{
-        userName = 'teacher'
-        password = 'Teacher@123456'
-    } | ConvertTo-Json
-    $teacherLogin = Invoke-RestMethod `
-        -Method Post `
-        -Uri 'http://localhost:5255/api/auth/login' `
-        -ContentType 'application/json' `
-        -Body $teacherLoginBody
-    $teacherHeaders = @{ Authorization = "Bearer $($teacherLogin.token)" }
-    $teacherGradeTasks = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/grades/sheets' `
-        -Headers $teacherHeaders
-    $teacherGradeTask = @($teacherGradeTasks) |
-        Where-Object { $_.id -eq $gradeTask.id } |
-        Select-Object -First 1
-    if ($null -eq $teacherGradeTask) {
-        throw 'Assigned teacher cannot access the grade sheet.'
-    }
-    if ($teacherGradeTask.sheet.status -eq 'Draft' -or
-        $teacherGradeTask.sheet.status -eq 'Returned') {
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/grades/sheets/$($teacherGradeTask.sheet.id)/submit" `
-            -Headers $teacherHeaders |
-            Out-Null
-    }
-
-    $collegeLoginBody = @{
-        userName = 'college'
-        password = 'College@123456'
-    } | ConvertTo-Json
-    $collegeLogin = Invoke-RestMethod `
-        -Method Post `
-        -Uri 'http://localhost:5255/api/auth/login' `
-        -ContentType 'application/json' `
-        -Body $collegeLoginBody
-    $collegeHeaders = @{ Authorization = "Bearer $($collegeLogin.token)" }
-    $collegeGradeTasks = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/grades/sheets' `
-        -Headers $collegeHeaders
-    $collegeGradeTask = @($collegeGradeTasks) |
-        Where-Object { $_.id -eq $gradeTask.id } |
-        Select-Object -First 1
-    if ($collegeGradeTask.sheet.status -eq 'Submitted') {
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/grades/sheets/$($collegeGradeTask.sheet.id)/approve" `
-            -Headers $collegeHeaders |
-            Out-Null
-    }
-
-    $adminGradeTasks = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/grades/sheets' `
-        -Headers $headers
-    $adminGradeTask = @($adminGradeTasks) |
-        Where-Object { $_.id -eq $gradeTask.id } |
-        Select-Object -First 1
-    if ($adminGradeTask.sheet.status -eq 'Approved') {
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/grades/sheets/$($adminGradeTask.sheet.id)/publish" `
-            -Headers $headers |
-            Out-Null
-    }
-    $studentTranscript = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/grades/student/transcript' `
-        -Headers $studentHeaders
-    if (@($studentTranscript.records).Count -lt 1) {
-        throw 'Published grade is not visible in the student transcript.'
-    }
-    $examPlans = Invoke-RestMethod -Uri 'http://localhost:5255/api/exams/plans' -Headers $headers
-    if (@($examPlans).Count -lt 1) { throw 'Development exam plan was not seeded.' }
-    $examDetail = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/exams/plans/$($examPlans[0].id)" `
-        -Headers $headers
-    if (@($examDetail.sessions).Count -lt 1) { throw 'Exam plan has no sessions.' }
-    $examRoster = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/exams/sessions/$($examDetail.sessions[0].id)/roster" `
-        -Headers $headers
-    $studentExams = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/exams/my-schedule' `
-        -Headers $studentHeaders
-    $teacherExams = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/exams/my-schedule' `
-        -Headers $teacherHeaders
-    if (@($studentExams).Count -lt 1 -or @($teacherExams).Count -lt 1) {
-        throw 'Personal exam schedule is not visible to student or invigilator.'
-    }
-
-    $statusOptions = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/student-status-changes/options' `
-        -Headers $studentHeaders
-    $statusChanges = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/student-status-changes' `
-        -Headers $studentHeaders
-    $openStatusChange = @($statusChanges) |
-        Where-Object { $_.state -in @('Submitted', 'CounselorApproved', 'CollegeApproved') } |
-        Select-Object -First 1
-    if ($null -eq $openStatusChange) {
-        $statusChangeType = if ($statusOptions.status -eq 'Active') {
-            'Suspension'
-        }
-        elseif ($statusOptions.status -eq 'Suspended') {
-            'Resumption'
-        }
-        else {
-            throw "Smoke-test student status '$($statusOptions.status)' cannot start a reversible change."
-        }
-        $statusChangeBody = @{
-            type = $statusChangeType
-            reason = '端到端验证学籍异动三级审核流程。'
-        } | ConvertTo-Json
-        $createdStatusChange = Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/student-status-changes' `
-            -Headers $studentHeaders `
-            -ContentType 'application/json' `
-            -Body $statusChangeBody
-        $statusChanges = Invoke-RestMethod `
-            -Uri 'http://localhost:5255/api/student-status-changes' `
-            -Headers $studentHeaders
-        $openStatusChange = @($statusChanges) |
-            Where-Object { $_.id -eq $createdStatusChange.id } |
-            Select-Object -First 1
-    }
-    $expectedStudentStatus = $openStatusChange.targetStatus
-    $approvalBody = @{ approved = $true; comment = '端到端审核通过。' } | ConvertTo-Json
-
-    if ($openStatusChange.state -eq 'Submitted') {
-        $prematureCollegeReview = Invoke-WebRequest `
-            -Method Post `
-            -Uri "http://localhost:5255/api/student-status-changes/$($openStatusChange.id)/review" `
-            -Headers $collegeHeaders `
-            -ContentType 'application/json' `
-            -Body $approvalBody `
-            -SkipHttpErrorCheck
-        if ($prematureCollegeReview.StatusCode -ne 409) {
-            throw 'College reviewer was able to bypass the counselor stage.'
-        }
-        $counselorLoginBody = @{
-            userName = 'counselor'
-            password = 'Counselor@123456'
-        } | ConvertTo-Json
-        $counselorLogin = Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/auth/login' `
-            -ContentType 'application/json' `
-            -Body $counselorLoginBody
-        $counselorHeaders = @{ Authorization = "Bearer $($counselorLogin.token)" }
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/student-status-changes/$($openStatusChange.id)/review" `
-            -Headers $counselorHeaders `
-            -ContentType 'application/json' `
-            -Body $approvalBody |
-            Out-Null
-        $openStatusChange.state = 'CounselorApproved'
-    }
-    if ($openStatusChange.state -eq 'CounselorApproved') {
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/student-status-changes/$($openStatusChange.id)/review" `
-            -Headers $collegeHeaders `
-            -ContentType 'application/json' `
-            -Body $approvalBody |
-            Out-Null
-        $openStatusChange.state = 'CollegeApproved'
-    }
-    if ($openStatusChange.state -eq 'CollegeApproved') {
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/student-status-changes/$($openStatusChange.id)/review" `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $approvalBody |
-            Out-Null
-    }
-    $completedStatusChanges = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/student-status-changes' `
-        -Headers $studentHeaders
-    $completedStatusChange = @($completedStatusChanges) |
-        Where-Object { $_.id -eq $openStatusChange.id } |
-        Select-Object -First 1
-    $updatedStatusOptions = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/student-status-changes/options' `
-        -Headers $studentHeaders
-    if ($completedStatusChange.state -ne 'Approved' -or
-        $updatedStatusOptions.status -ne $expectedStudentStatus) {
-        throw 'Student status change was not finalized or did not update the student record.'
-    }
-
-    $graduationBatches = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/graduation-audits/batches' `
-        -Headers $headers
-    $graduationBatch = @($graduationBatches) |
-        Where-Object { $_.name -eq '2030届端到端毕业资格审核' } |
-        Select-Object -First 1
-    if ($null -eq $graduationBatch) {
-        $graduationBatchBody = @{
-            name = '2030届端到端毕业资格审核'
-            graduationYear = 2030
-            enrollmentYear = 2026
-            notes = '用于验证培养方案、成绩快照、人工复核与结果发布。'
-        } | ConvertTo-Json
-        $createdGraduationBatch = Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/graduation-audits/batches' `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $graduationBatchBody
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/graduation-audits/batches/$($createdGraduationBatch.id)/calculate" `
-            -Headers $headers |
-            Out-Null
-        $graduationBatch = Invoke-RestMethod `
-            -Uri "http://localhost:5255/api/graduation-audits/batches/$($createdGraduationBatch.id)" `
-            -Headers $headers
-        $studentGraduationResult = @($graduationBatch.results) |
-            Where-Object { $_.studentNumber -eq '202601001' } |
-            Select-Object -First 1
-        if ($null -eq $studentGraduationResult) {
-            throw 'Calculated graduation batch does not contain the smoke-test student.'
-        }
-        $overrideDecisionBody = @{
-            conclusion = 'Eligible'
-            comment = '端到端验证人工复核调整。'
-        } | ConvertTo-Json
-        Invoke-RestMethod `
-            -Method Put `
-            -Uri "http://localhost:5255/api/graduation-audits/results/$($studentGraduationResult.id)" `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $overrideDecisionBody |
-            Out-Null
-        $restoreDecisionBody = @{
-            conclusion = 'Ineligible'
-            comment = '恢复规则结论后发布测试结果。'
-        } | ConvertTo-Json
-        Invoke-RestMethod `
-            -Method Put `
-            -Uri "http://localhost:5255/api/graduation-audits/results/$($studentGraduationResult.id)" `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $restoreDecisionBody |
-            Out-Null
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/graduation-audits/batches/$($graduationBatch.id)/publish" `
-            -Headers $headers |
-            Out-Null
-    }
-    else {
-        $graduationBatch = Invoke-RestMethod `
-            -Uri "http://localhost:5255/api/graduation-audits/batches/$($graduationBatch.id)" `
-            -Headers $headers
-    }
-    $graduationBatch = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/graduation-audits/batches/$($graduationBatch.id)" `
-        -Headers $headers
-    $studentGraduationResult = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/graduation-audits/my-result' `
-        -Headers $studentHeaders
-    if ($graduationBatch.status -ne 'Published' -or
-        $studentGraduationResult.conclusion -ne 'Ineligible') {
-        throw 'Published graduation result is not visible to the student.'
-    }
-
-    $graduationBatches = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/graduation-audits/batches' `
-        -Headers $headers
-    $degreeSourceBatch = @($graduationBatches) |
-        Where-Object { $_.name -eq '2030届学位授予资格演示' } |
-        Select-Object -First 1
-    if ($null -eq $degreeSourceBatch) {
-        $degreeSourceBody = @{
-            name = '2030届学位授予资格演示'
-            graduationYear = 2030
-            enrollmentYear = 2026
-            notes = '为未关联登录账号的演示学生生成学位授予前置资格。'
-        } | ConvertTo-Json
-        $createdDegreeSource = Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/graduation-audits/batches' `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $degreeSourceBody
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/graduation-audits/batches/$($createdDegreeSource.id)/calculate" `
-            -Headers $headers |
-            Out-Null
-        $degreeSourceDetail = Invoke-RestMethod `
-            -Uri "http://localhost:5255/api/graduation-audits/batches/$($createdDegreeSource.id)" `
-            -Headers $headers
-        $degreeSourceResult = @($degreeSourceDetail.results) |
-            Where-Object { $_.studentNumber -eq '202601002' } |
-            Select-Object -First 1
-        $degreeSourceDecision = @{
-            conclusion = 'Eligible'
-            comment = '演示学生经校级专项复核符合毕业条件。'
-        } | ConvertTo-Json
-        Invoke-RestMethod `
-            -Method Put `
-            -Uri "http://localhost:5255/api/graduation-audits/results/$($degreeSourceResult.id)" `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $degreeSourceDecision |
-            Out-Null
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/graduation-audits/batches/$($createdDegreeSource.id)/publish" `
-            -Headers $headers |
-            Out-Null
-    }
-
-    $degreeBatches = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/degree-awards/batches' `
-        -Headers $headers
-    $degreeBatch = @($degreeBatches) |
-        Where-Object { $_.name -eq '2030届端到端学位授予审核' } |
-        Select-Object -First 1
-    if ($null -eq $degreeBatch) {
-        $degreeBatchBody = @{
-            name = '2030届端到端学位授予审核'
-            graduationYear = 2030
-            degreeName = '工学学士'
-            minimumGradePoint = 0
-            notes = '验证毕业资格来源、绩点快照、人工复核与发布锁定。'
-        } | ConvertTo-Json
-        $createdDegreeBatch = Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/degree-awards/batches' `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $degreeBatchBody
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/degree-awards/batches/$($createdDegreeBatch.id)/calculate" `
-            -Headers $headers |
-            Out-Null
-        $degreeBatch = Invoke-RestMethod `
-            -Uri "http://localhost:5255/api/degree-awards/batches/$($createdDegreeBatch.id)" `
-            -Headers $headers
-        $degreeResult = @($degreeBatch.results) | Select-Object -First 1
-        if ($null -eq $degreeResult -or $degreeResult.conclusion -ne 'Granted') {
-            throw 'Degree-award calculation did not include the eligible graduated student.'
-        }
-        $degreeRejectBody = @{
-            conclusion = 'NotGranted'
-            comment = '端到端验证学位结论人工调整。'
-        } | ConvertTo-Json
-        Invoke-RestMethod `
-            -Method Put `
-            -Uri "http://localhost:5255/api/degree-awards/results/$($degreeResult.id)" `
-            -Headers $collegeHeaders `
-            -ContentType 'application/json' `
-            -Body $degreeRejectBody |
-            Out-Null
-        $degreeRestoreBody = @{
-            conclusion = 'Granted'
-            comment = '恢复规则结论并完成授予发布。'
-        } | ConvertTo-Json
-        Invoke-RestMethod `
-            -Method Put `
-            -Uri "http://localhost:5255/api/degree-awards/results/$($degreeResult.id)" `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $degreeRestoreBody |
-            Out-Null
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/degree-awards/batches/$($degreeBatch.id)/publish" `
-            -Headers $headers |
-            Out-Null
-    }
-    $degreeBatch = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/degree-awards/batches/$($degreeBatch.id)" `
-        -Headers $headers
-    $collegeDegreeBatch = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/degree-awards/batches/$($degreeBatch.id)" `
-        -Headers $collegeHeaders
-    if ($degreeBatch.status -ne 'Published' -or
-        @($degreeBatch.results).Count -lt 1 -or
-        @($collegeDegreeBatch.results).Count -lt 1) {
-        throw 'Published degree-award results are not visible in the authorized college scope.'
-    }
-
-    $clearanceBatches = Invoke-RestMethod `
-        -Uri 'http://localhost:5255/api/graduation-clearance/batches' `
-        -Headers $headers
-    $clearanceBatch = @($clearanceBatches) |
-        Where-Object { $_.name -eq '2030届端到端毕业离校手续' } |
-        Select-Object -First 1
-    if ($null -eq $clearanceBatch) {
-        $clearanceBatchBody = @{
-            name = '2030届端到端毕业离校手续'
-            graduationYear = 2030
-            notes = '验证校级、学院、辅导员分工办理与批次关闭。'
-            items = @(
-                @{
-                    code = 'FINANCE'
-                    name = '财务费用结清'
-                    responsibleUnit = '财务处'
-                    responsibleRole = 'AcademicAdmin'
-                    isRequired = $true
-                },
-                @{
-                    code = 'COLLEGE'
-                    name = '学院材料归档'
-                    responsibleUnit = '计算机学院'
-                    responsibleRole = 'CollegeAdmin'
-                    isRequired = $true
-                },
-                @{
-                    code = 'DORM'
-                    name = '宿舍退宿确认'
-                    responsibleUnit = '学生工作办公室'
-                    responsibleRole = 'Counselor'
-                    isRequired = $true
-                }
-            )
-        } | ConvertTo-Json -Depth 5
-        $createdClearanceBatch = Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/graduation-clearance/batches' `
-            -Headers $headers `
-            -ContentType 'application/json' `
-            -Body $clearanceBatchBody
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/graduation-clearance/batches/$($createdClearanceBatch.id)/generate" `
-            -Headers $headers |
-            Out-Null
-        $clearanceBatch = Invoke-RestMethod `
-            -Uri "http://localhost:5255/api/graduation-clearance/batches/$($createdClearanceBatch.id)" `
-            -Headers $headers
-        if (@($clearanceBatch.records).Count -ne 3) {
-            throw 'Graduation-clearance records were not generated for each configured item.'
-        }
-        $academicClearanceRecord = @($clearanceBatch.records) |
-            Where-Object { $_.responsibleRole -eq 'AcademicAdmin' } |
-            Select-Object -First 1
-        $wrongRoleResponse = Invoke-WebRequest `
-            -Method Put `
-            -Uri "http://localhost:5255/api/graduation-clearance/records/$($academicClearanceRecord.id)" `
-            -Headers $collegeHeaders `
-            -ContentType 'application/json' `
-            -Body (@{ status = 'Completed'; notes = '越权测试。' } | ConvertTo-Json) `
-            -SkipHttpErrorCheck
-        if ($wrongRoleResponse.StatusCode -ne 403) {
-            throw 'College role was able to complete an academic-level clearance item.'
-        }
-        $counselorLoginBody = @{
-            userName = 'counselor'
-            password = 'Counselor@123456'
-        } | ConvertTo-Json
-        $counselorLogin = Invoke-RestMethod `
-            -Method Post `
-            -Uri 'http://localhost:5255/api/auth/login' `
-            -ContentType 'application/json' `
-            -Body $counselorLoginBody
-        $counselorHeaders = @{ Authorization = "Bearer $($counselorLogin.token)" }
-        foreach ($record in @($clearanceBatch.records)) {
-            $recordHeaders = switch ($record.responsibleRole) {
-                'CollegeAdmin' { $collegeHeaders }
-                'Counselor' { $counselorHeaders }
-                default { $headers }
-            }
-            $recordBody = @{
-                status = 'Completed'
-                notes = "$($record.responsibleUnit)端到端办理完成。"
-            } | ConvertTo-Json
-            Invoke-RestMethod `
-                -Method Put `
-                -Uri "http://localhost:5255/api/graduation-clearance/records/$($record.id)" `
-                -Headers $recordHeaders `
-                -ContentType 'application/json' `
-                -Body $recordBody |
-                Out-Null
-        }
-        Invoke-RestMethod `
-            -Method Post `
-            -Uri "http://localhost:5255/api/graduation-clearance/batches/$($clearanceBatch.id)/close" `
-            -Headers $headers |
-            Out-Null
-    }
-    $clearanceBatch = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/graduation-clearance/batches/$($clearanceBatch.id)" `
-        -Headers $headers
-    $collegeClearanceBatch = Invoke-RestMethod `
-        -Uri "http://localhost:5255/api/graduation-clearance/batches/$($clearanceBatch.id)" `
-        -Headers $collegeHeaders
-    if ($clearanceBatch.status -ne 'Closed' -or
-        @($clearanceBatch.records | Where-Object { $_.status -eq 'Pending' }).Count -ne 0 -or
-        @($collegeClearanceBatch.records).Count -lt 1) {
-        throw 'Graduation-clearance batch was not closed or is missing from college scope.'
-    }
-
-    $frontend = Invoke-WebRequest -Uri 'http://localhost:5255/' -TimeoutSec 5
-    $spaFallback = Invoke-WebRequest -Uri 'http://localhost:5255/base-data' -TimeoutSec 5
-    $unknownApiParameters = @{
-        Uri                = 'http://localhost:5255/api/does-not-exist'
-        SkipHttpErrorCheck = $true
-        TimeoutSec         = 5
-    }
-    $unknownApi = Invoke-WebRequest @unknownApiParameters
-
-    [pscustomobject]@{
-        Health       = $health.status
-        Database     = $health.database
-        User         = $login.user.displayName
-        Term         = $dashboard.currentTerm.name
-        Campuses     = @($campuses).Count
-        CounselorAssignments = $assignedClassCount
-        Teachers     = $teachers.total
-        Students     = $students.total
-        Courses      = $courses.total
-        CourseCategories = @($courseCategories).Count
-        CourseExcelRows = $courseImport.total
-        Plans        = $curriculumPlans.total
-        PlanModules  = if ($null -ne $curriculumDetail) { @($curriculumDetail.modules).Count } else { 0 }
-        TeachingTasks = $teachingTasks.total
-        Schedules     = @($schedulePlans).Count
-        ScheduleEntries = if ($null -ne $scheduleDetail) { @($scheduleDetail.entries).Count } else { 0 }
-        SelectionRounds = @($selectionRounds).Count
-        SelectionOfferings = @($selectionOfferings).Count
-        StudentEnrollments = $activeEnrollments.Count
-        RosterStudents = $selectionRoster.enrolledCount
-        GradeSheets    = @($gradeTasks).Count
-        GradeRecords   = @($gradeDetail.sheet.records).Count
-        TranscriptRecords = @($studentTranscript.records).Count
-        ExamSessions   = @($examDetail.sessions).Count
-        ExamRoster     = @($examRoster.students).Count
-        StatusChanges  = @($completedStatusChanges).Count
-        StudentStatus  = $updatedStatusOptions.status
-        GraduationResults = @($graduationBatch.results).Count
-        GraduationConclusion = $studentGraduationResult.conclusion
-        DegreeResults = @($degreeBatch.results).Count
-        DegreeConclusion = $degreeBatch.results[0].conclusion
-        ClearanceRecords = @($clearanceBatch.records).Count
-        ClearanceStatus = $clearanceBatch.status
-        AccessUpdate  = $true
-        ScopeChecks   = $scopeChecks -join ', '
-        StaticIndex  = $frontend.Content.Contains('明序教务管理系统')
-        SpaFallback  = $spaFallback.StatusCode
-        ApiNotFound  = $unknownApi.StatusCode
-    } | Format-List
-}
-finally {
-    if (-not $process.HasExited) {
-        Stop-Process -Id $process.Id -Force
-    }
-    Remove-Item -LiteralPath $courseTemplatePath -Force -ErrorAction SilentlyContinue
-    Remove-Item -LiteralPath $courseExportPath -Force -ErrorAction SilentlyContinue
-}

scripts/start-visual-test.ps1

@@ -1,13 +0,0 @@
-$ErrorActionPreference = 'Stop'
-$env:ASPNETCORE_ENVIRONMENT = 'Development'
-$env:ASPNETCORE_URLS = 'http://localhost:5256'
-
-$workspaceRoot = Split-Path -Parent $PSScriptRoot
-$publishRoot = Join-Path $workspaceRoot '.artifacts/publish'
-$process = Start-Process `
-    -FilePath (Join-Path $publishRoot 'Jiaowu.Api.exe') `
-    -WorkingDirectory $publishRoot `
-    -WindowStyle Hidden `
-    -PassThru
-
-$process.Id

src/Jiaowu.Api/Controllers/ApprovalsController.cs

@@ -295,7 +295,8 @@ public sealed class ApprovalsController(AppDbContext db, ICurrentUserDataScope s
                         {
                             origRecord.TotalScore = passedRecord.TotalScore;
                             origRecord.GradePoint = passedRecord.GradePoint;
-                            origRecord.Notes = $"课程替代：{cs.SubstituteCourse.Code} {cs.SubstituteCourse.Name}";
+                            origRecord.Notes =
+                                $"课程替代：{cs.SubstituteCourse!.Code} {cs.SubstituteCourse.Name}";
                         }
                     }
                 }

src/Jiaowu.Api/Infrastructure/Persistence/AppDbContextFactory.cs

@@ -0,0 +1,20 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace Jiaowu.Api.Infrastructure.Persistence;
+
+public sealed class AppDbContextFactory : IDesignTimeDbContextFactory<AppDbContext>
+{
+    public AppDbContext CreateDbContext(string[] args)
+    {
+        var connectionString =
+            Environment.GetEnvironmentVariable("ConnectionStrings__MySql")
+            ?? "Server=localhost;Port=3306;Database=jiaowu;User=__design_time__;Password=__not_used__;";
+
+        var options = new DbContextOptionsBuilder<AppDbContext>()
+            .UseMySQL(connectionString)
+            .Options;
+
+        return new AppDbContext(options);
+    }
+}

src/Jiaowu.Api/Infrastructure/Persistence/DatabaseInitializer.cs

@@ -10,31 +10,49 @@ public sealed class DatabaseInitializer(
     RoleManager<ApplicationRole> roleManager,
     UserManager<ApplicationUser> userManager,
     DevelopmentSqliteMigrator sqliteMigrator,
-    DevelopmentDemoDataSeeder developmentDemoDataSeeder,
+    DatabaseOptions databaseOptions,
     IConfiguration configuration,
     IHostEnvironment environment,
     ILogger<DatabaseInitializer> logger)
 {
-    public async Task InitializeAsync()
+    public async Task InitializeAsync(bool migrateOnly = false)
     {
         if (environment.IsDevelopment())
         {
+            if (migrateOnly)
+            {
+                throw new InvalidOperationException(
+                    "--migrate-only 仅用于非 Development 环境的 MySQL 数据库。");
+            }
+
             await db.Database.EnsureCreatedAsync();
             await sqliteMigrator.MigrateAsync();
         }
-        else
+        else if (migrateOnly || databaseOptions.ApplyMigrationsOnStartup)
         {
             await db.Database.MigrateAsync();
         }
+        else
+        {
+            var pendingMigrations = (await db.Database.GetPendingMigrationsAsync()).ToArray();
+            if (pendingMigrations.Length > 0)
+            {
+                throw new InvalidOperationException(
+                    $"数据库还有 {pendingMigrations.Length} 个待执行迁移。请在发布前运行 " +
+                    "'Jiaowu.Api --migrate-only'，或显式配置 " +
+                    "Database:ApplyMigrationsOnStartup=true。");
+            }
+        }
+
+        if (migrateOnly)
+        {
+            logger.LogInformation("数据库迁移已完成。");
+            return;
+        }
 
         await SeedRolesAsync();
         await SeedAdministratorAsync();
         await SeedCourseCategoriesAsync();
-
-        if (environment.IsDevelopment())
-        {
-            await SeedDevelopmentDataAsync();
-        }
     }
 
     private async Task SeedRolesAsync()
@@ -131,7 +149,11 @@ public sealed class DatabaseInitializer(
             .ToHashSet(StringComparer.OrdinalIgnoreCase);
         foreach (var (code, name, sortOrder) in defaults)
         {
-            if (existingCodes.Contains(code)) continue;
+            if (existingCodes.Contains(code))
+            {
+                continue;
+            }
+
             db.CourseCategories.Add(new CourseCategory
             {
                 Code = code,
@@ -159,523 +181,6 @@ public sealed class DatabaseInitializer(
         await db.SaveChangesAsync();
     }
 
-    private async Task SeedDevelopmentDataAsync()
-    {
-        if (!await db.Campuses.AnyAsync())
-        {
-            var campus = new Campus
-            {
-                Code = "MAIN",
-                Name = "主校区",
-                Address = "大学路 1 号"
-            };
-            var college = new College
-            {
-                Code = "CS",
-                Name = "计算机学院",
-                ShortName = "计算机学院",
-                CampusId = campus.Id
-            };
-            var major = new Major
-            {
-                Code = "080901",
-                Name = "计算机科学与技术",
-                CollegeId = college.Id,
-                DegreeType = "工学学士",
-                SchoolingYears = 4
-            };
-            var building = new Building
-            {
-                Code = "J1",
-                Name = "第一教学楼",
-                CampusId = campus.Id
-            };
-
-            db.AddRange(
-                campus,
-                college,
-                major,
-                new AdministrativeClass
-                {
-                    Code = "CS2026-01",
-                    Name = "计科 2026-1 班",
-                    MajorId = major.Id,
-                    Grade = 2026,
-                    CounselorName = "陈老师"
-                },
-                building,
-                new Classroom
-                {
-                    Code = "J1-201",
-                    Name = "J1-201",
-                    BuildingId = building.Id,
-                    Capacity = 60,
-                    RoomType = "多媒体教室",
-                    Equipment = "投影、扩声、录播"
-                },
-                new AcademicTerm
-                {
-                    Code = "2026-2027-1",
-                    Name = "2026—2027 学年第一学期",
-                    AcademicYear = "2026-2027",
-                    Season = TermSeason.Autumn,
-                    StartDate = new DateOnly(2026, 9, 7),
-                    EndDate = new DateOnly(2027, 1, 17),
-                    IsCurrent = true
-                });
-
-            await db.SaveChangesAsync();
-        }
-
-        var computerCollege = await db.Colleges.SingleAsync(x => x.Code == "CS");
-        var computerClass = await db.AdministrativeClasses
-            .SingleAsync(x => x.Code == "CS2026-01");
-
-        if (!await db.Teachers.AnyAsync())
-        {
-            db.Teachers.AddRange(
-                new Teacher
-                {
-                    TeacherNumber = "T2026001",
-                    Name = "陈明远",
-                    Gender = Gender.Male,
-                    CollegeId = computerCollege.Id,
-                    Title = "副教授",
-                    Status = TeacherStatus.Active,
-                    HireDate = new DateOnly(2018, 7, 1),
-                    Email = "chenmy@example.edu.cn"
-                },
-                new Teacher
-                {
-                    TeacherNumber = "T2026002",
-                    Name = "林书雅",
-                    Gender = Gender.Female,
-                    CollegeId = computerCollege.Id,
-                    Title = "讲师",
-                    Status = TeacherStatus.Active,
-                    HireDate = new DateOnly(2022, 9, 1),
-                    Email = "linsy@example.edu.cn"
-                });
-        }
-
-        if (!await db.Students.AnyAsync())
-        {
-            db.Students.AddRange(
-                new Student
-                {
-                    StudentNumber = "202601001",
-                    Name = "周启航",
-                    Gender = Gender.Male,
-                    AdministrativeClassId = computerClass.Id,
-                    EnrollmentYear = 2026,
-                    EnrollmentDate = new DateOnly(2026, 9, 7),
-                    Status = StudentStatus.Active
-                },
-                new Student
-                {
-                    StudentNumber = "202601002",
-                    Name = "许知夏",
-                    Gender = Gender.Female,
-                    AdministrativeClassId = computerClass.Id,
-                    EnrollmentYear = 2026,
-                    EnrollmentDate = new DateOnly(2026, 9, 7),
-                    Status = StudentStatus.Active
-                },
-                new Student
-                {
-                    StudentNumber = "202601003",
-                    Name = "方嘉树",
-                    Gender = Gender.Male,
-                    AdministrativeClassId = computerClass.Id,
-                    EnrollmentYear = 2026,
-                    EnrollmentDate = new DateOnly(2026, 9, 7),
-                    Status = StudentStatus.Active
-                });
-        }
-
-        var courseCategories = await db.CourseCategories
-            .ToDictionaryAsync(x => x.Code, StringComparer.OrdinalIgnoreCase);
-
-        if (!await db.Courses.AnyAsync())
-        {
-            db.Courses.AddRange(
-                new Course
-                {
-                    Code = "CS101",
-                    Name = "程序设计基础",
-                    EnglishName = "Fundamentals of Programming",
-                    CollegeId = computerCollege.Id,
-                    CourseCategoryId = courseCategories["BASIC"].Id,
-                    Credits = 4,
-                    TotalHours = 64,
-                    LectureHours = 40,
-                    PracticeHours = 24,
-                    Nature = CourseNature.MajorRequired,
-                    AssessmentMethod = AssessmentMethod.Examination,
-                    Description = "面向一年级学生的程序设计入门课程。"
-                },
-                new Course
-                {
-                    Code = "CS201",
-                    Name = "数据结构",
-                    EnglishName = "Data Structures",
-                    CollegeId = computerCollege.Id,
-                    CourseCategoryId = courseCategories["BASIC"].Id,
-                    Credits = 3.5m,
-                    TotalHours = 56,
-                    LectureHours = 40,
-                    PracticeHours = 16,
-                    Nature = CourseNature.MajorRequired,
-                    AssessmentMethod = AssessmentMethod.Examination
-                },
-                new Course
-                {
-                    Code = "CS305",
-                    Name = "软件工程实践",
-                    EnglishName = "Software Engineering Practice",
-                    CollegeId = computerCollege.Id,
-                    CourseCategoryId = courseCategories["PRACTICE"].Id,
-                    Credits = 2,
-                    TotalHours = 48,
-                    LectureHours = 8,
-                    PracticeHours = 40,
-                    Nature = CourseNature.Practice,
-                    AssessmentMethod = AssessmentMethod.Assessment
-                });
-        }
-        await db.SaveChangesAsync();
-
-        if (!await db.CurriculumPlans.AnyAsync())
-        {
-            var seededCourses = await db.Courses
-                .Where(x => x.Code == "CS101" || x.Code == "CS201" || x.Code == "CS305")
-                .ToDictionaryAsync(x => x.Code);
-            if (seededCourses.Count == 3)
-            {
-                db.CurriculumPlans.Add(new CurriculumPlan
-                {
-                    MajorId = (await db.Majors.SingleAsync(x => x.Code == "080901")).Id,
-                    Name = "计算机科学与技术专业培养方案",
-                    Version = "2026版",
-                    EffectiveGrade = 2026,
-                    TotalCredits = 9.5m,
-                    Status = CurriculumPlanStatus.Published,
-                    PublishedAt = DateTime.UtcNow,
-                    Description = "用于本地开发的精简培养方案示例。",
-                    Modules =
-                    [
-                        new CurriculumModule
-                        {
-                            Code = "BASIC",
-                            Name = "专业基础课程",
-                            RequiredCredits = 7.5m,
-                            SortOrder = 10,
-                            Courses =
-                            [
-                                new CurriculumCourse
-                                {
-                                    CourseId = seededCourses["CS101"].Id,
-                                    RecommendedSemester = 1,
-                                    Type = CurriculumCourseType.Required
-                                },
-                                new CurriculumCourse
-                                {
-                                    CourseId = seededCourses["CS201"].Id,
-                                    RecommendedSemester = 3,
-                                    Type = CurriculumCourseType.Required
-                                }
-                            ]
-                        },
-                        new CurriculumModule
-                        {
-                            Code = "PRACTICE",
-                            Name = "实践教学",
-                            RequiredCredits = 2m,
-                            SortOrder = 20,
-                            Courses =
-                            [
-                                new CurriculumCourse
-                                {
-                                    CourseId = seededCourses["CS305"].Id,
-                                    RecommendedSemester = 5,
-                                    Type = CurriculumCourseType.Required
-                                }
-                            ]
-                        }
-                    ]
-                });
-                await db.SaveChangesAsync();
-            }
-        }
-
-        if (!await db.TeachingTasks.AnyAsync())
-        {
-            var term = await db.AcademicTerms.SingleAsync(x => x.IsCurrent);
-            var course = await db.Courses.SingleAsync(x => x.Code == "CS101");
-            var teacher = await db.Teachers.SingleAsync(x => x.TeacherNumber == "T2026001");
-            var administrativeClass = await db.AdministrativeClasses
-                .SingleAsync(x => x.Code == "CS2026-01");
-            db.TeachingTasks.Add(new TeachingTask
-            {
-                TaskNumber = "2026-1-CS101-01",
-                Name = "程序设计基础教学班 01",
-                AcademicTermId = term.Id,
-                CourseId = course.Id,
-                Capacity = 60,
-                StartWeek = 1,
-                EndWeek = 16,
-                WeeklyHours = 4,
-                Status = TeachingTaskStatus.Published,
-                PublishedAt = DateTime.UtcNow,
-                Teachers =
-                [
-                    new TeachingTaskTeacher
-                    {
-                        TeacherId = teacher.Id,
-                        IsPrimary = true
-                    }
-                ],
-                Classes =
-                [
-                    new TeachingTaskClass
-                    {
-                        AdministrativeClassId = administrativeClass.Id
-                    }
-                ]
-            });
-            await db.SaveChangesAsync();
-        }
-
-        if (!await db.SchedulePlans.AnyAsync())
-        {
-            var term = await db.AcademicTerms.SingleAsync(x => x.IsCurrent);
-            var task = await db.TeachingTasks.SingleAsync(x => x.TaskNumber == "2026-1-CS101-01");
-            var classroom = await db.Classrooms.SingleAsync(x => x.Code == "J1-201");
-            db.SchedulePlans.Add(new SchedulePlan
-            {
-                AcademicTermId = term.Id,
-                Name = "2026—2027 学年第一学期正式课表",
-                Version = "V1",
-                Status = SchedulePlanStatus.Published,
-                PublishedAt = DateTime.UtcNow,
-                Entries =
-                [
-                    new ScheduleEntry
-                    {
-                        TeachingTaskId = task.Id,
-                        ClassroomId = classroom.Id,
-                        DayOfWeek = 1,
-                        StartPeriod = 1,
-                        PeriodCount = 2,
-                        StartWeek = 1,
-                        EndWeek = 16,
-                        WeekPattern = WeekPattern.All
-                    }
-                ]
-            });
-            await db.SaveChangesAsync();
-        }
-
-        await SeedDevelopmentUsersAsync(computerCollege.Id);
-        await SeedDevelopmentCourseSelectionAsync();
-        await SeedDevelopmentGradesAsync();
-        await SeedDevelopmentExamsAsync();
-        await developmentDemoDataSeeder.SeedAsync();
-    }
-
-    private async Task SeedDevelopmentCourseSelectionAsync()
-    {
-        if (!await db.CourseSelectionRounds.AnyAsync())
-        {
-            var term = await db.AcademicTerms.SingleAsync(x => x.IsCurrent);
-            var task = await db.TeachingTasks.SingleAsync(
-                x => x.TaskNumber == "2026-1-CS101-01");
-            var now = DateTime.UtcNow;
-            db.CourseSelectionRounds.Add(new CourseSelectionRound
-            {
-                AcademicTermId = term.Id,
-                Name = "2026—2027 学年第一学期第一轮选课",
-                StartsAt = now.AddDays(-2),
-                EndsAt = now.AddDays(14),
-                WithdrawalEndsAt = now.AddDays(21),
-                MaxCredits = 30,
-                Status = CourseSelectionRoundStatus.Open,
-                Notes = "本地开发演示轮次，可用于验证选课、退课和教学班名单。",
-                Offerings =
-                [
-                    new CourseSelectionOffering
-                    {
-                        TeachingTaskId = task.Id,
-                        Capacity = 60,
-                        IsOpenToAll = false,
-                        Notes = "面向计科 2026-1 班开放。"
-                    }
-                ]
-            });
-            await db.SaveChangesAsync();
-        }
-
-        var seededTask = await db.TeachingTasks.SingleAsync(
-            x => x.TaskNumber == "2026-1-CS101-01");
-        var offering = await db.CourseSelectionOfferings.FirstOrDefaultAsync(
-            x => x.TeachingTaskId == seededTask.Id);
-        var student = await db.Students.SingleAsync(x =>
-            x.StudentNumber == "202601001");
-        if (offering is not null &&
-            !await db.CourseEnrollments.AnyAsync(x =>
-                x.CourseSelectionOfferingId == offering.Id &&
-                x.StudentId == student.Id))
-        {
-            db.CourseEnrollments.Add(new CourseEnrollment
-            {
-                CourseSelectionOfferingId = offering.Id,
-                StudentId = student.Id
-            });
-            await db.SaveChangesAsync();
-        }
-    }
-
-    private async Task SeedDevelopmentGradesAsync()
-    {
-        if (await db.GradeSheets.AnyAsync()) return;
-        var task = await db.TeachingTasks.SingleAsync(
-            x => x.TaskNumber == "2026-1-CS101-01");
-        var student = await db.Students.SingleAsync(
-            x => x.StudentNumber == "202601001");
-        db.GradeSheets.Add(new GradeSheet
-        {
-            TeachingTaskId = task.Id,
-            RegularWeight = 30,
-            FinalWeight = 70,
-            Status = GradeSheetStatus.Draft,
-            Records =
-            [
-                new GradeRecord
-                {
-                    StudentId = student.Id,
-                    RegularScore = 88,
-                    FinalScore = 92,
-                    TotalScore = 90.8m,
-                    GradePoint = 4.0m
-                }
-            ]
-        });
-        await db.SaveChangesAsync();
-    }
-
-    private async Task SeedDevelopmentExamsAsync()
-    {
-        if (await db.ExamPlans.AnyAsync()) return;
-        var term = await db.AcademicTerms.SingleAsync(x => x.IsCurrent);
-        var task = await db.TeachingTasks.SingleAsync(x => x.TaskNumber == "2026-1-CS101-01");
-        var room = await db.Classrooms.SingleAsync(x => x.Code == "J1-201");
-        var teacher = await db.Teachers.SingleAsync(x => x.TeacherNumber == "T2026001");
-        db.ExamPlans.Add(new ExamPlan
-        {
-            AcademicTermId = term.Id,
-            Name = "2026—2027 学年第一学期期末考试",
-            Status = ExamPlanStatus.Published,
-            PublishedAt = DateTime.UtcNow,
-            Notes = "本地开发演示考试计划。",
-            Sessions =
-            [
-                new ExamSession
-                {
-                    TeachingTaskId = task.Id,
-                    ClassroomId = room.Id,
-                    ExamDate = new DateOnly(2027, 1, 8),
-                    StartPeriod = 1,
-                    PeriodCount = 2,
-                    StartsAt = new DateTime(2027, 1, 8, 9, 0, 0, DateTimeKind.Utc),
-                    EndsAt = new DateTime(2027, 1, 8, 11, 0, 0, DateTimeKind.Utc),
-                    RequiredInvigilatorCount = 2,
-                    Invigilators =
-                    [
-                        new ExamSessionInvigilator { TeacherId = teacher.Id }
-                    ]
-                }
-            ]
-        });
-        await db.SaveChangesAsync();
-    }
-
-    private async Task SeedDevelopmentUsersAsync(Guid collegeId)
-    {
-        var definitions = new[]
-        {
-            new DevelopmentUser(
-                "academic", "校级教务员", "Academic@123456",
-                null, null, SystemRoles.AcademicAdmin),
-            new DevelopmentUser(
-                "college", "计算机学院教务员", "College@123456",
-                "A2026001", collegeId, SystemRoles.CollegeAdmin),
-            new DevelopmentUser(
-                "counselor", "陈老师", "Counselor@123456",
-                "C2026001", collegeId, SystemRoles.Counselor),
-            new DevelopmentUser(
-                "teacher", "陈明远", "Teacher@123456",
-                "T2026001", collegeId, SystemRoles.Teacher),
-            new DevelopmentUser(
-                "student", "周启航", "Student@123456",
-                "202601001", collegeId, SystemRoles.Student),
-            new DevelopmentUser(
-                "leader", "教学分管领导", "Leader@123456",
-                null, null, SystemRoles.Leader)
-        };
-
-        foreach (var definition in definitions)
-        {
-            var user = await userManager.FindByNameAsync(definition.UserName);
-            if (user is null)
-            {
-                user = new ApplicationUser
-                {
-                    UserName = definition.UserName,
-                    DisplayName = definition.DisplayName,
-                    StaffNumber = definition.StaffNumber,
-                    CollegeId = definition.CollegeId,
-                    LockoutEnabled = true,
-                    IsEnabled = true
-                };
-                EnsureSucceeded(
-                    await userManager.CreateAsync(user, definition.Password),
-                    $"创建开发账号 {definition.UserName}");
-            }
-
-            if (!await userManager.IsInRoleAsync(user, definition.Role))
-            {
-                EnsureSucceeded(
-                    await userManager.AddToRoleAsync(user, definition.Role),
-                    $"授予开发账号 {definition.UserName} 角色");
-            }
-
-            if (definition.Role == SystemRoles.Teacher)
-            {
-                var teacher = await db.Teachers.SingleAsync(
-                    x => x.TeacherNumber == definition.StaffNumber);
-                if (!teacher.UserId.HasValue) teacher.UserId = user.Id;
-            }
-            if (definition.Role == SystemRoles.Student)
-            {
-                var student = await db.Students.SingleAsync(
-                    x => x.StudentNumber == definition.StaffNumber);
-                if (!student.UserId.HasValue) student.UserId = user.Id;
-            }
-            if (definition.Role == SystemRoles.Counselor)
-            {
-                var classes = await db.AdministrativeClasses
-                    .Where(x =>
-                        x.CounselorUserId == null &&
-                        x.CounselorName == definition.DisplayName)
-                    .ToListAsync();
-                foreach (var administrativeClass in classes)
-                    administrativeClass.CounselorUserId = user.Id;
-            }
-        }
-
-        await db.SaveChangesAsync();
-    }
-
     private static void EnsureSucceeded(IdentityResult result, string action)
     {
         if (result.Succeeded)
@@ -686,12 +191,4 @@ public sealed class DatabaseInitializer(
         throw new InvalidOperationException(
             $"{action}失败：{string.Join("；", result.Errors.Select(x => x.Description))}");
     }
-
-    private sealed record DevelopmentUser(
-        string UserName,
-        string DisplayName,
-        string Password,
-        string? StaffNumber,
-        Guid? CollegeId,
-        string Role);
 }

src/Jiaowu.Api/Infrastructure/Persistence/DatabaseOptions.cs

@@ -4,4 +4,6 @@ public sealed class DatabaseOptions
 {
     public const string SectionName = "Database";
     public string Provider { get; set; } = "MySql";
+    public bool ApplyMigrationsOnStartup { get; set; }
+    public int CommandTimeoutSeconds { get; set; } = 30;
 }

src/Jiaowu.Api/Infrastructure/Persistence/DevelopmentDemoDataSeeder.cs

@@ -1,620 +0,0 @@
-using Jiaowu.Api.Domain.Academic;
-using Microsoft.EntityFrameworkCore;
-
-namespace Jiaowu.Api.Infrastructure.Persistence;
-
-public sealed class DevelopmentDemoDataSeeder(
-    AppDbContext db,
-    ILogger<DevelopmentDemoDataSeeder> logger)
-{
-    private const int Grade = 2026;
-    private const int ClassesPerMajor = 2;
-    private const int StudentsPerClass = 35;
-    private const int TeachersPerCollege = 8;
-
-    public async Task SeedAsync(CancellationToken cancellationToken = default)
-    {
-        var campus = await db.Campuses
-            .OrderBy(x => x.Code == "MAIN" ? 0 : 1)
-            .ThenBy(x => x.Code)
-            .FirstOrDefaultAsync(cancellationToken);
-        if (campus is null)
-        {
-            campus = new Campus
-            {
-                Code = "MAIN",
-                Name = "主校区",
-                Address = "大学路 1 号"
-            };
-            db.Campuses.Add(campus);
-            await db.SaveChangesAsync(cancellationToken);
-        }
-
-        await SeedCollegesAsync(campus.Id, cancellationToken);
-        await SeedMajorsAsync(cancellationToken);
-        await SeedClassesAsync(cancellationToken);
-        await SeedTeachersAsync(cancellationToken);
-        await SeedStudentsAsync(cancellationToken);
-        await SeedCoursesAsync(cancellationToken);
-        await SeedTeacherCourseApplicationsAsync(cancellationToken);
-        await LogSummaryAsync(cancellationToken);
-    }
-
-    private async Task SeedCollegesAsync(Guid campusId, CancellationToken cancellationToken)
-    {
-        var existingCodes = (await db.Colleges
-            .Select(x => x.Code)
-            .ToListAsync(cancellationToken))
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var additions = CollegeDefinitions
-            .Where(x => !existingCodes.Contains(x.Code))
-            .Select((x, index) => new College
-            {
-                Code = x.Code,
-                Name = x.Name,
-                ShortName = x.ShortName,
-                CampusId = campusId,
-                SortOrder = (index + 1) * 10
-            })
-            .ToList();
-        if (additions.Count == 0) return;
-        db.Colleges.AddRange(additions);
-        await db.SaveChangesAsync(cancellationToken);
-    }
-
-    private async Task SeedMajorsAsync(CancellationToken cancellationToken)
-    {
-        var colleges = await db.Colleges
-            .ToDictionaryAsync(x => x.Code, StringComparer.OrdinalIgnoreCase, cancellationToken);
-        var existingCodes = (await db.Majors
-            .Select(x => x.Code)
-            .ToListAsync(cancellationToken))
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var additions = new List<Major>();
-        foreach (var collegeDefinition in CollegeDefinitions)
-        {
-            if (!colleges.TryGetValue(collegeDefinition.Code, out var college)) continue;
-            for (var index = 0; index < collegeDefinition.Majors.Count; index++)
-            {
-                var definition = collegeDefinition.Majors[index];
-                if (existingCodes.Contains(definition.Code)) continue;
-                additions.Add(new Major
-                {
-                    Code = definition.Code,
-                    Name = definition.Name,
-                    CollegeId = college.Id,
-                    DegreeType = definition.DegreeType,
-                    SchoolingYears = definition.SchoolingYears,
-                    SortOrder = (index + 1) * 10
-                });
-            }
-        }
-        if (additions.Count == 0) return;
-        db.Majors.AddRange(additions);
-        await db.SaveChangesAsync(cancellationToken);
-    }
-
-    private async Task SeedClassesAsync(CancellationToken cancellationToken)
-    {
-        var targetMajorCodes = CollegeDefinitions
-            .SelectMany(x => x.Majors)
-            .Select(x => x.Code)
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var majors = await db.Majors
-            .Where(x => targetMajorCodes.Contains(x.Code))
-            .OrderBy(x => x.Code)
-            .ToListAsync(cancellationToken);
-        var existingClasses = await db.AdministrativeClasses
-            .Where(x => x.Grade == Grade && targetMajorCodes.Contains(x.Major!.Code))
-            .OrderBy(x => x.Code)
-            .ToListAsync(cancellationToken);
-        var existingCodes = (await db.AdministrativeClasses
-            .Select(x => x.Code)
-            .ToListAsync(cancellationToken))
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var additions = new List<AdministrativeClass>();
-        foreach (var major in majors)
-        {
-            var currentCount = existingClasses.Count(x => x.MajorId == major.Id);
-            for (var section = currentCount + 1; section <= ClassesPerMajor; section++)
-            {
-                var code = CreateAvailableCode(
-                    $"{major.Code}-{Grade}-{section:D2}",
-                    existingCodes);
-                additions.Add(new AdministrativeClass
-                {
-                    Code = code,
-                    Name = $"{major.Name}{Grade}级{section}班",
-                    MajorId = major.Id,
-                    Grade = Grade,
-                    CounselorName = $"{CounselorSurnames[(section + major.Code.Length) % CounselorSurnames.Length]}老师",
-                    SortOrder = section * 10
-                });
-            }
-        }
-        if (additions.Count == 0) return;
-        db.AdministrativeClasses.AddRange(additions);
-        await db.SaveChangesAsync(cancellationToken);
-    }
-
-    private async Task SeedTeachersAsync(CancellationToken cancellationToken)
-    {
-        var collegeCodes = CollegeDefinitions
-            .Select(x => x.Code)
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var colleges = await db.Colleges
-            .Where(x => collegeCodes.Contains(x.Code))
-            .OrderBy(x => x.Code)
-            .ToListAsync(cancellationToken);
-        var existingTeachers = await db.Teachers
-            .Where(x => colleges.Select(c => c.Id).Contains(x.CollegeId))
-            .ToListAsync(cancellationToken);
-        var existingNumbers = (await db.Teachers
-            .Select(x => x.TeacherNumber)
-            .ToListAsync(cancellationToken))
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var additions = new List<Teacher>();
-        for (var collegeIndex = 0; collegeIndex < colleges.Count; collegeIndex++)
-        {
-            var college = colleges[collegeIndex];
-            var currentCount = existingTeachers.Count(x => x.CollegeId == college.Id);
-            for (var position = currentCount + 1; position <= TeachersPerCollege; position++)
-            {
-                var teacherNumber = CreateAvailableCode(
-                    $"T26{collegeIndex + 1:D2}{position:D3}",
-                    existingNumbers);
-                additions.Add(new Teacher
-                {
-                    TeacherNumber = teacherNumber,
-                    Name = BuildPersonName(collegeIndex, position),
-                    Gender = position % 2 == 0 ? Gender.Female : Gender.Male,
-                    CollegeId = college.Id,
-                    Title = TeacherTitles[(position - 1) % TeacherTitles.Length],
-                    Status = TeacherStatus.Active,
-                    HireDate = new DateOnly(2012 + position, 7, 1),
-                    Email = $"{teacherNumber.ToLowerInvariant()}@example.edu.cn",
-                    Notes = "Development 环境批量测试教师。"
-                });
-            }
-        }
-        if (additions.Count == 0) return;
-        db.Teachers.AddRange(additions);
-        await db.SaveChangesAsync(cancellationToken);
-    }
-
-    private async Task SeedStudentsAsync(CancellationToken cancellationToken)
-    {
-        var targetMajorCodes = CollegeDefinitions
-            .SelectMany(x => x.Majors)
-            .Select(x => x.Code)
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var classes = await db.AdministrativeClasses
-            .Where(x => x.Grade == Grade && targetMajorCodes.Contains(x.Major!.Code))
-            .OrderBy(x => x.Code)
-            .ToListAsync(cancellationToken);
-        var classIds = classes.Select(x => x.Id).ToHashSet();
-        var existingStudents = await db.Students
-            .Where(x => classIds.Contains(x.AdministrativeClassId))
-            .ToListAsync(cancellationToken);
-        var existingNumbers = (await db.Students
-            .Select(x => x.StudentNumber)
-            .ToListAsync(cancellationToken))
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var additions = new List<Student>();
-        for (var classIndex = 0; classIndex < classes.Count; classIndex++)
-        {
-            var administrativeClass = classes[classIndex];
-            var existingCount = existingStudents.Count(x =>
-                x.AdministrativeClassId == administrativeClass.Id);
-            var candidate = 1;
-            while (existingCount + additions.Count(x =>
-                       x.AdministrativeClassId == administrativeClass.Id) < StudentsPerClass)
-            {
-                var studentNumber = $"{Grade}{classIndex + 1:D3}{candidate:D3}";
-                candidate++;
-                if (!existingNumbers.Add(studentNumber)) continue;
-                additions.Add(new Student
-                {
-                    StudentNumber = studentNumber,
-                    Name = BuildPersonName(classIndex, candidate + 5),
-                    Gender = candidate % 2 == 0 ? Gender.Male : Gender.Female,
-                    AdministrativeClassId = administrativeClass.Id,
-                    EnrollmentYear = Grade,
-                    EnrollmentDate = new DateOnly(Grade, 9, 7),
-                    DateOfBirth = new DateOnly(2007 + candidate % 2, candidate % 12 + 1,
-                        candidate % 27 + 1),
-                    Status = StudentStatus.Active,
-                    Email = $"{studentNumber}@student.example.edu.cn",
-                    Notes = "Development 环境批量测试学生。"
-                });
-            }
-        }
-        if (additions.Count == 0) return;
-        db.Students.AddRange(additions);
-        await db.SaveChangesAsync(cancellationToken);
-    }
-
-    private async Task SeedCoursesAsync(CancellationToken cancellationToken)
-    {
-        var colleges = await db.Colleges
-            .ToDictionaryAsync(x => x.Code, StringComparer.OrdinalIgnoreCase, cancellationToken);
-        var categories = await db.CourseCategories
-            .ToDictionaryAsync(x => x.Code, StringComparer.OrdinalIgnoreCase, cancellationToken);
-        var existingCodes = (await db.Courses
-            .Select(x => x.Code)
-            .ToListAsync(cancellationToken))
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var additions = new List<Course>();
-
-        foreach (var definition in PublicCourseDefinitions)
-        {
-            if (existingCodes.Contains(definition.Code) ||
-                !colleges.TryGetValue(definition.CollegeCode, out var college) ||
-                !categories.TryGetValue(definition.CategoryCode, out var category))
-                continue;
-            additions.Add(new Course
-            {
-                Code = definition.Code,
-                Name = definition.Name,
-                CollegeId = college.Id,
-                CourseCategoryId = category.Id,
-                Credits = definition.Credits,
-                TotalHours = definition.TotalHours,
-                LectureHours = definition.LectureHours,
-                PracticeHours = definition.TotalHours - definition.LectureHours,
-                Nature = definition.Nature,
-                AssessmentMethod = definition.AssessmentMethod,
-                Description = "Development 环境公共课程测试数据。"
-            });
-        }
-
-        foreach (var collegeDefinition in CollegeDefinitions)
-        {
-            if (!colleges.TryGetValue(collegeDefinition.Code, out var college)) continue;
-            for (var index = 0; index < collegeDefinition.ProfessionalCourses.Count; index++)
-            {
-                var code = $"{collegeDefinition.Code}D{index + 1:D2}";
-                if (existingCodes.Contains(code)) continue;
-                var nature = index switch
-                {
-                    < 4 => CourseNature.MajorRequired,
-                    < 6 => CourseNature.MajorElective,
-                    _ => CourseNature.Practice
-                };
-                var categoryCode = nature == CourseNature.Practice ? "PRACTICE" : "MAJOR";
-                additions.Add(new Course
-                {
-                    Code = code,
-                    Name = collegeDefinition.ProfessionalCourses[index],
-                    CollegeId = college.Id,
-                    CourseCategoryId = categories[categoryCode].Id,
-                    Credits = nature switch
-                    {
-                        CourseNature.MajorRequired => index % 2 == 0 ? 3m : 3.5m,
-                        _ => 2m
-                    },
-                    TotalHours = nature switch
-                    {
-                        CourseNature.MajorRequired => index % 2 == 0 ? 48 : 56,
-                        CourseNature.MajorElective => 32,
-                        _ => 48
-                    },
-                    LectureHours = nature == CourseNature.Practice ? 8 :
-                        nature == CourseNature.MajorElective ? 24 :
-                        index % 2 == 0 ? 40 : 48,
-                    PracticeHours = nature == CourseNature.Practice ? 40 :
-                        nature == CourseNature.MajorElective ? 8 : 8,
-                    Nature = nature,
-                    AssessmentMethod = nature == CourseNature.Practice
-                        ? AssessmentMethod.Assessment
-                        : AssessmentMethod.Examination,
-                    Description = $"由{collegeDefinition.Name}开设的专业课程测试数据。"
-                });
-            }
-        }
-        if (additions.Count == 0) return;
-        db.Courses.AddRange(additions);
-        await db.SaveChangesAsync(cancellationToken);
-    }
-
-    private async Task SeedTeacherCourseApplicationsAsync(CancellationToken cancellationToken)
-    {
-        var term = await db.AcademicTerms
-            .OrderByDescending(x => x.IsCurrent)
-            .ThenByDescending(x => x.StartDate)
-            .FirstOrDefaultAsync(cancellationToken);
-        if (term is null) return;
-
-        var collegeCodes = CollegeDefinitions
-            .Select(x => x.Code)
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-        var colleges = await db.Colleges
-            .Where(x => collegeCodes.Contains(x.Code))
-            .OrderBy(x => x.Code)
-            .ToListAsync(cancellationToken);
-        var collegeIds = colleges.Select(x => x.Id).ToHashSet();
-        var teachers = await db.Teachers
-            .Where(x => collegeIds.Contains(x.CollegeId) && x.Status == TeacherStatus.Active)
-            .OrderBy(x => x.TeacherNumber)
-            .ToListAsync(cancellationToken);
-        var courses = await db.Courses
-            .Where(x => collegeIds.Contains(x.CollegeId))
-            .OrderBy(x => x.Code)
-            .ToListAsync(cancellationToken);
-        var publicCourses = courses
-            .Where(x => x.Nature is CourseNature.GeneralRequired or CourseNature.GeneralElective)
-            .ToList();
-        if (publicCourses.Count == 0) return;
-
-        var existing = (await db.TeacherCourseApplications
-            .Where(x => x.AcademicTermId == term.Id)
-            .Select(x => new { x.TeacherId, x.CourseId })
-            .ToListAsync(cancellationToken))
-            .Select(x => (x.TeacherId, x.CourseId))
-            .ToHashSet();
-        var additions = new List<TeacherCourseApplication>();
-        for (var teacherIndex = 0; teacherIndex < teachers.Count; teacherIndex++)
-        {
-            var teacher = teachers[teacherIndex];
-            var professionalCourses = courses
-                .Where(x => x.CollegeId == teacher.CollegeId &&
-                            x.Nature is CourseNature.MajorRequired or
-                                CourseNature.MajorElective or CourseNature.Practice)
-                .Take(4);
-            var selectedPublicCourses = Enumerable.Range(0, 2)
-                .Select(offset => publicCourses[(teacherIndex + offset) % publicCourses.Count]);
-            foreach (var course in professionalCourses
-                         .Concat(selectedPublicCourses)
-                         .DistinctBy(x => x.Id))
-            {
-                if (!existing.Add((teacher.Id, course.Id))) continue;
-                additions.Add(new TeacherCourseApplication
-                {
-                    AcademicTermId = term.Id,
-                    TeacherId = teacher.Id,
-                    CourseId = course.Id,
-                    Status = TeacherCourseApplicationStatus.Approved,
-                    Statement = "Development 环境批量生成的授课意向。",
-                    ReviewComment = "测试数据自动审核通过。",
-                    SubmittedAt = DateTime.UtcNow.AddDays(-7),
-                    ReviewedAt = DateTime.UtcNow.AddDays(-6)
-                });
-            }
-        }
-        if (additions.Count == 0) return;
-        db.TeacherCourseApplications.AddRange(additions);
-        await db.SaveChangesAsync(cancellationToken);
-    }
-
-    private async Task LogSummaryAsync(CancellationToken cancellationToken)
-    {
-        var courseCounts = await db.Courses
-            .GroupBy(x => x.Nature)
-            .Select(x => new { Nature = x.Key, Count = x.Count() })
-            .ToDictionaryAsync(x => x.Nature, x => x.Count, cancellationToken);
-        logger.LogInformation(
-            "Development 测试数据已就绪：学院/教学单位 {CollegeCount}，专业 {MajorCount}，" +
-            "行政班 {ClassCount}，教师 {TeacherCount}，学生 {StudentCount}，课程 {CourseCount}；" +
-            "公共必修 {GeneralRequiredCount}，公共选修 {GeneralElectiveCount}，" +
-            "专业必修 {MajorRequiredCount}，专业选修 {MajorElectiveCount}，实践课程 {PracticeCount}；" +
-            "已审核授课资格 {ApplicationCount}。",
-            await db.Colleges.CountAsync(cancellationToken),
-            await db.Majors.CountAsync(cancellationToken),
-            await db.AdministrativeClasses.CountAsync(cancellationToken),
-            await db.Teachers.CountAsync(cancellationToken),
-            await db.Students.CountAsync(cancellationToken),
-            await db.Courses.CountAsync(cancellationToken),
-            courseCounts.GetValueOrDefault(CourseNature.GeneralRequired),
-            courseCounts.GetValueOrDefault(CourseNature.GeneralElective),
-            courseCounts.GetValueOrDefault(CourseNature.MajorRequired),
-            courseCounts.GetValueOrDefault(CourseNature.MajorElective),
-            courseCounts.GetValueOrDefault(CourseNature.Practice),
-            await db.TeacherCourseApplications
-                .CountAsync(x => x.Status == TeacherCourseApplicationStatus.Approved,
-                    cancellationToken));
-    }
-
-    private static string CreateAvailableCode(string preferredCode, ISet<string> existingCodes)
-    {
-        var candidate = preferredCode;
-        var suffix = 1;
-        while (!existingCodes.Add(candidate))
-        {
-            candidate = $"{preferredCode}-{suffix++}";
-        }
-        return candidate;
-    }
-
-    private static string BuildPersonName(int groupIndex, int position)
-    {
-        var surname = Surnames[(groupIndex + position) % Surnames.Length];
-        var givenName = GivenNames[
-            (groupIndex * 7 + position * 3) % GivenNames.Length];
-        return surname + givenName;
-    }
-
-    private static readonly string[] Surnames =
-        ["王", "李", "张", "刘", "陈", "杨", "黄", "赵", "吴", "周", "徐", "孙", "马", "朱", "胡", "郭", "何", "高", "林", "罗"];
-
-    private static readonly string[] GivenNames =
-        ["明远", "知夏", "嘉树", "雨桐", "思源", "若溪", "景行", "书雅", "子涵", "浩然", "清越", "语晨", "承宇", "欣怡", "博文", "婉宁", "俊逸", "安然", "泽楷", "可心"];
-
-    private static readonly string[] CounselorSurnames =
-        ["陈", "林", "周", "王", "李", "张", "刘", "赵"];
-
-    private static readonly string[] TeacherTitles =
-        ["教授", "副教授", "讲师", "讲师", "副教授", "实验师", "讲师", "教授"];
-
-    private static readonly CollegeSeed[] CollegeDefinitions =
-    [
-        new("CS", "计算机学院", "计算机学院",
-            [
-                new("080901", "计算机科学与技术", "工学学士"),
-                new("080902", "软件工程", "工学学士"),
-                new("080903", "网络工程", "工学学士"),
-                new("080910T", "数据科学与大数据技术", "工学学士"),
-                new("080717T", "人工智能", "工学学士")
-            ],
-            ["程序设计基础", "离散数学", "数据结构", "计算机组成原理", "操作系统", "数据库系统原理", "软件工程课程设计", "人工智能项目实践"]),
-        new("EIA", "电子信息与自动化学院", "电子信息学院",
-            [
-                new("080701", "电子信息工程", "工学学士"),
-                new("080703", "通信工程", "工学学士"),
-                new("080801", "自动化", "工学学士"),
-                new("080803T", "机器人工程", "工学学士")
-            ],
-            ["电路分析", "模拟电子技术", "数字电子技术", "信号与系统", "通信原理", "嵌入式系统", "电子系统设计", "综合电子实训"]),
-        new("ME", "机械与车辆工程学院", "机械学院",
-            [
-                new("080202", "机械设计制造及其自动化", "工学学士"),
-                new("080207", "车辆工程", "工学学士"),
-                new("080205", "工业设计", "工学学士"),
-                new("080213T", "智能制造工程", "工学学士")
-            ],
-            ["工程制图", "理论力学", "材料力学", "机械原理", "机械设计", "智能制造技术", "机械创新设计", "工程训练"]),
-        new("EE", "电气工程学院", "电气学院",
-            [
-                new("080601", "电气工程及其自动化", "工学学士"),
-                new("080604T", "电气工程与智能控制", "工学学士"),
-                new("080605T", "电机电器智能化", "工学学士")
-            ],
-            ["电路原理", "电机学", "电力电子技术", "自动控制原理", "电力系统分析", "继电保护", "电气控制实训", "电力系统综合设计"]),
-        new("CIVIL", "土木建筑工程学院", "土建学院",
-            [
-                new("081001", "土木工程", "工学学士"),
-                new("082801", "建筑学", "建筑学学士", 5),
-                new("120103", "工程管理", "管理学学士"),
-                new("081006T", "道路桥梁与渡河工程", "工学学士")
-            ],
-            ["工程制图与识图", "工程力学", "结构力学", "混凝土结构", "土力学与地基基础", "工程项目管理", "建筑设计基础", "工程测量实习"]),
-        new("ECON", "经济与管理学院", "经管学院",
-            [
-                new("120201K", "工商管理", "管理学学士"),
-                new("120203K", "会计学", "管理学学士"),
-                new("020301K", "金融学", "经济学学士"),
-                new("020401", "国际经济与贸易", "经济学学士"),
-                new("120202", "市场营销", "管理学学士")
-            ],
-            ["微观经济学", "宏观经济学", "管理学原理", "会计学原理", "统计学", "财务管理", "企业经营沙盘", "商务数据分析实践"]),
-        new("FOREIGN", "外国语学院", "外国语学院",
-            [
-                new("050201", "英语", "文学学士"),
-                new("050207", "日语", "文学学士"),
-                new("050262", "商务英语", "文学学士")
-            ],
-            ["综合英语", "英语听力", "英语口语", "英语写作", "翻译理论与实践", "跨文化交际", "商务英语实训", "口译实践"]),
-        new("MATH", "数学与统计学院", "数统学院",
-            [
-                new("070101", "数学与应用数学", "理学学士"),
-                new("071201", "统计学", "理学学士"),
-                new("020102", "经济统计学", "经济学学士")
-            ],
-            ["数学分析", "高等代数", "解析几何", "常微分方程", "实变函数", "数值分析", "数学建模", "统计软件实践"]),
-        new("PHYSICS", "物理与光电工程学院", "物电学院",
-            [
-                new("070201", "物理学", "理学学士"),
-                new("070202", "应用物理学", "理学学士"),
-                new("080705", "光电信息科学与工程", "工学学士")
-            ],
-            ["力学", "热学", "电磁学", "光学", "量子力学", "固体物理", "近代物理实验", "光电技术综合实验"]),
-        new("CHEM", "化学与环境工程学院", "化环学院",
-            [
-                new("070301", "化学", "理学学士"),
-                new("070302", "应用化学", "理学学士"),
-                new("081301", "化学工程与工艺", "工学学士"),
-                new("082502", "环境工程", "工学学士")
-            ],
-            ["无机化学", "有机化学", "分析化学", "物理化学", "化工原理", "仪器分析", "基础化学实验", "化工设计实践"]),
-        new("HUMANITIES", "人文与法学院", "人文法学院",
-            [
-                new("050101", "汉语言文学", "文学学士"),
-                new("030101K", "法学", "法学学士"),
-                new("120402", "行政管理", "管理学学士")
-            ],
-            ["中国古代文学", "中国现当代文学", "现代汉语", "古代汉语", "文学概论", "行政管理学", "新闻写作实训", "社会调查实践"]),
-        new("EDU", "教育科学学院", "教育学院",
-            [
-                new("040101", "教育学", "教育学学士"),
-                new("040107", "小学教育", "教育学学士"),
-                new("040106", "学前教育", "教育学学士")
-            ],
-            ["教育学原理", "普通心理学", "教育心理学", "课程与教学论", "教育研究方法", "班级管理", "微格教学", "教育见习"]),
-        new("ART", "艺术设计学院", "艺术学院",
-            [
-                new("130502", "视觉传达设计", "艺术学学士"),
-                new("130503", "环境设计", "艺术学学士"),
-                new("130202", "音乐学", "艺术学学士")
-            ],
-            ["设计素描", "色彩基础", "构成基础", "艺术概论", "数字媒体设计", "品牌视觉设计", "专业采风", "毕业创作实践"]),
-        new("PE", "体育学院", "体育学院",
-            [
-                new("040201", "体育教育", "教育学学士"),
-                new("040203", "社会体育指导与管理", "教育学学士")
-            ],
-            ["运动解剖学", "运动生理学", "学校体育学", "体育心理学", "运动训练学", "体育社会学", "田径专项训练", "球类专项训练"]),
-        new("LIFE", "生命科学与食品工程学院", "生食学院",
-            [
-                new("071001", "生物科学", "理学学士"),
-                new("071002", "生物技术", "理学学士"),
-                new("082701", "食品科学与工程", "工学学士")
-            ],
-            ["普通生物学", "生物化学", "细胞生物学", "遗传学", "微生物学", "食品化学", "分子生物学实验", "生物工程综合实践"]),
-        new("MARXISM", "马克思主义学院", "马克思主义学院", [], [])
-    ];
-
-    private static readonly PublicCourseSeed[] PublicCourseDefinitions =
-    [
-        new("PUB001", "思想道德与法治", "MARXISM", "MORAL", 3, 48, 48, CourseNature.GeneralRequired),
-        new("PUB002", "中国近现代史纲要", "MARXISM", "MORAL", 3, 48, 48, CourseNature.GeneralRequired),
-        new("PUB003", "马克思主义基本原理", "MARXISM", "MORAL", 3, 48, 48, CourseNature.GeneralRequired),
-        new("PUB004", "毛泽东思想和中国特色社会主义理论体系概论", "MARXISM", "MORAL", 5, 80, 64, CourseNature.GeneralRequired),
-        new("PUB005", "习近平新时代中国特色社会主义思想概论", "MARXISM", "MORAL", 3, 48, 48, CourseNature.GeneralRequired),
-        new("PUB006", "形势与政策", "MARXISM", "MORAL", 2, 32, 32, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB007", "大学英语 I", "FOREIGN", "ENGLISH", 4, 64, 48, CourseNature.GeneralRequired),
-        new("PUB008", "大学英语 II", "FOREIGN", "ENGLISH", 4, 64, 48, CourseNature.GeneralRequired),
-        new("PUB009", "高等数学 A（上）", "MATH", "BASIC", 5, 80, 80, CourseNature.GeneralRequired),
-        new("PUB010", "高等数学 A（下）", "MATH", "BASIC", 5, 80, 80, CourseNature.GeneralRequired),
-        new("PUB011", "线性代数", "MATH", "BASIC", 3, 48, 48, CourseNature.GeneralRequired),
-        new("PUB012", "概率论与数理统计", "MATH", "BASIC", 3, 48, 48, CourseNature.GeneralRequired),
-        new("PUB013", "大学计算机基础", "CS", "BASIC", 2, 32, 16, CourseNature.GeneralRequired),
-        new("PUB014", "Python 程序设计", "CS", "BASIC", 3, 48, 24, CourseNature.GeneralRequired),
-        new("PUB015", "大学体育 I", "PE", "SPORTS", 1, 32, 4, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB016", "大学体育 II", "PE", "SPORTS", 1, 32, 4, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB017", "军事理论", "HUMANITIES", "MILITARY", 2, 36, 32, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB018", "大学生心理健康教育", "EDU", "BASIC", 2, 32, 24, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB019", "大学生职业发展与就业指导", "EDU", "BASIC", 2, 32, 24, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB020", "创新创业基础", "ECON", "INNOVATION", 2, 32, 20, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB021", "劳动教育", "EDU", "LABOR", 1, 32, 8, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB022", "国家安全教育", "HUMANITIES", "MORAL", 1, 16, 16, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB023", "文献检索与学术规范", "HUMANITIES", "BASIC", 1, 16, 12, CourseNature.GeneralRequired, AssessmentMethod.Assessment),
-        new("PUB024", "艺术鉴赏", "ART", "AESTHETIC", 2, 32, 24, CourseNature.GeneralElective, AssessmentMethod.Assessment),
-        new("PUB025", "中国传统文化", "HUMANITIES", "AESTHETIC", 2, 32, 32, CourseNature.GeneralElective, AssessmentMethod.Assessment),
-        new("PUB026", "生态文明导论", "LIFE", "BASIC", 2, 32, 24, CourseNature.GeneralElective, AssessmentMethod.Assessment),
-        new("PUB027", "人工智能导论", "CS", "INNOVATION", 2, 32, 20, CourseNature.GeneralElective, AssessmentMethod.Assessment),
-        new("PUB028", "经济学通识", "ECON", "BASIC", 2, 32, 32, CourseNature.GeneralElective, AssessmentMethod.Assessment)
-    ];
-
-    private sealed record CollegeSeed(
-        string Code,
-        string Name,
-        string ShortName,
-        IReadOnlyList<MajorSeed> Majors,
-        IReadOnlyList<string> ProfessionalCourses);
-
-    private sealed record MajorSeed(
-        string Code,
-        string Name,
-        string DegreeType,
-        int SchoolingYears = 4);
-
-    private sealed record PublicCourseSeed(
-        string Code,
-        string Name,
-        string CollegeCode,
-        string CategoryCode,
-        decimal Credits,
-        int TotalHours,
-        int LectureHours,
-        CourseNature Nature,
-        AssessmentMethod AssessmentMethod = AssessmentMethod.Examination);
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725051000_FlexibleGradesAndAttendance.cs

@@ -1,184 +0,0 @@
-using System;
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    /// <inheritdoc />
-    public partial class FlexibleGradesAndAttendance : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.CreateTable(
-                name: "GradeItems",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                    GradeSheetId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    Name = table.Column<string>(type: "varchar(60)", maxLength: 60, nullable: false),
-                    Weight = table.Column<decimal>(type: "decimal(5,1)", precision: 5, scale: 1, nullable: false),
-                    SortOrder = table.Column<int>(type: "int", nullable: false),
-                    CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                    UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_GradeItems", x => x.Id);
-                    table.ForeignKey(
-                        name: "FK_GradeItems_GradeSheets_GradeSheetId",
-                        column: x => x.GradeSheetId,
-                        principalTable: "GradeSheets",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
-                })
-                .Annotation("MySQL:Charset", "utf8mb4");
-
-            migrationBuilder.CreateTable(
-                name: "GradeItemScores",
-                columns: table => new
-                {
-                    GradeRecordId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    GradeItemId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    Score = table.Column<decimal>(type: "decimal(5,1)", precision: 5, scale: 1, nullable: true)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_GradeItemScores", x => new { x.GradeRecordId, x.GradeItemId });
-                    table.ForeignKey(
-                        name: "FK_GradeItemScores_GradeItems_GradeItemId",
-                        column: x => x.GradeItemId,
-                        principalTable: "GradeItems",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Restrict);
-                    table.ForeignKey(
-                        name: "FK_GradeItemScores_GradeRecords_GradeRecordId",
-                        column: x => x.GradeRecordId,
-                        principalTable: "GradeRecords",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
-                })
-                .Annotation("MySQL:Charset", "utf8mb4");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_GradeItems_GradeSheetId_SortOrder",
-                table: "GradeItems",
-                columns: new[] { "GradeSheetId", "SortOrder" });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_GradeItemScores_GradeRecordId_GradeItemId",
-                table: "GradeItemScores",
-                columns: new[] { "GradeRecordId", "GradeItemId" },
-                unique: true);
-
-            migrationBuilder.CreateIndex(
-                name: "IX_GradeItemScores_GradeItemId",
-                table: "GradeItemScores",
-                column: "GradeItemId");
-
-            migrationBuilder.DropColumn(
-                name: "MidtermWeight",
-                table: "GradeSheets");
-
-            migrationBuilder.DropColumn(
-                name: "MidtermScore",
-                table: "GradeRecords");
-
-            migrationBuilder.CreateTable(
-                name: "AttendanceSheets",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                    TeachingTaskId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    Name = table.Column<string>(type: "varchar(120)", maxLength: 120, nullable: false),
-                    AttendanceDate = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                    Status = table.Column<int>(type: "int", nullable: false),
-                    Notes = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: true),
-                    SubmittedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                    CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                    UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_AttendanceSheets", x => x.Id);
-                    table.ForeignKey(
-                        name: "FK_AttendanceSheets_TeachingTasks_TeachingTaskId",
-                        column: x => x.TeachingTaskId,
-                        principalTable: "TeachingTasks",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Restrict);
-                })
-                .Annotation("MySQL:Charset", "utf8mb4");
-
-            migrationBuilder.CreateTable(
-                name: "AttendanceRecords",
-                columns: table => new
-                {
-                    AttendanceSheetId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    StudentId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    Status = table.Column<int>(type: "int", nullable: false),
-                    Notes = table.Column<string>(type: "varchar(300)", maxLength: 300, nullable: true)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_AttendanceRecords", x => new { x.AttendanceSheetId, x.StudentId });
-                    table.ForeignKey(
-                        name: "FK_AttendanceRecords_AttendanceSheets_AttendanceSheetId",
-                        column: x => x.AttendanceSheetId,
-                        principalTable: "AttendanceSheets",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
-                    table.ForeignKey(
-                        name: "FK_AttendanceRecords_Students_StudentId",
-                        column: x => x.StudentId,
-                        principalTable: "Students",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Restrict);
-                })
-                .Annotation("MySQL:Charset", "utf8mb4");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_AttendanceSheets_TeachingTaskId_AttendanceDate",
-                table: "AttendanceSheets",
-                columns: new[] { "TeachingTaskId", "AttendanceDate" });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_AttendanceRecords_AttendanceSheetId_StudentId",
-                table: "AttendanceRecords",
-                columns: new[] { "AttendanceSheetId", "StudentId" },
-                unique: true);
-
-            migrationBuilder.CreateIndex(
-                name: "IX_AttendanceRecords_StudentId",
-                table: "AttendanceRecords",
-                column: "StudentId");
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropTable(name: "AttendanceRecords");
-            migrationBuilder.DropTable(name: "AttendanceSheets");
-            migrationBuilder.DropTable(name: "GradeItemScores");
-            migrationBuilder.DropTable(name: "GradeItems");
-
-            migrationBuilder.AddColumn<decimal>(
-                name: "MidtermWeight",
-                table: "GradeSheets",
-                type: "decimal(5,1)",
-                precision: 5,
-                scale: 1,
-                nullable: false,
-                defaultValue: 0m);
-
-            migrationBuilder.AddColumn<decimal>(
-                name: "MidtermScore",
-                table: "GradeRecords",
-                type: "decimal(5,1)",
-                precision: 5,
-                scale: 1,
-                nullable: true);
-        }
-    }
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725100000_ExamSchedulingOptimization.cs

@@ -1,158 +0,0 @@
-using System;
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    /// <inheritdoc />
-    public partial class ExamSchedulingOptimization : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            // Drop old FK/index on ClassroomId
-            migrationBuilder.DropForeignKey(
-                name: "FK_ExamSessions_Classrooms_ClassroomId",
-                table: "ExamSessions");
-
-            migrationBuilder.DropIndex(
-                name: "IX_ExamSessions_ClassroomId",
-                table: "ExamSessions");
-
-            // Make ClassroomId nullable
-            migrationBuilder.AlterColumn<Guid>(
-                name: "ClassroomId",
-                table: "ExamSessions",
-                type: "char(36)",
-                nullable: true,
-                oldClrType: typeof(Guid),
-                oldType: "char(36)");
-
-            // Add new columns
-            migrationBuilder.AddColumn<DateOnly>(
-                name: "ExamDate",
-                table: "ExamSessions",
-                type: "date",
-                nullable: false,
-                defaultValue: new DateOnly(2027, 1, 1));
-
-            migrationBuilder.AddColumn<int>(
-                name: "StartPeriod",
-                table: "ExamSessions",
-                type: "int",
-                nullable: false,
-                defaultValue: 1);
-
-            migrationBuilder.AddColumn<int>(
-                name: "PeriodCount",
-                table: "ExamSessions",
-                type: "int",
-                nullable: false,
-                defaultValue: 2);
-
-            migrationBuilder.AddColumn<Guid>(
-                name: "RequiredBuildingId",
-                table: "ExamSessions",
-                type: "char(36)",
-                nullable: true);
-
-            migrationBuilder.AddColumn<int>(
-                name: "RequiredInvigilatorCount",
-                table: "ExamSessions",
-                type: "int",
-                nullable: false,
-                defaultValue: 2);
-
-            // Re-add FK/index on ClassroomId (nullable, SetNull)
-            migrationBuilder.CreateIndex(
-                name: "IX_ExamSessions_ClassroomId",
-                table: "ExamSessions",
-                column: "ClassroomId");
-
-            migrationBuilder.AddForeignKey(
-                name: "FK_ExamSessions_Classrooms_ClassroomId",
-                table: "ExamSessions",
-                column: "ClassroomId",
-                principalTable: "Classrooms",
-                principalColumn: "Id",
-                onDelete: ReferentialAction.SetNull);
-
-            // New indices
-            migrationBuilder.CreateIndex(
-                name: "IX_ExamSessions_ExamPlanId_ExamDate",
-                table: "ExamSessions",
-                columns: new[] { "ExamPlanId", "ExamDate" });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_ExamSessions_RequiredBuildingId",
-                table: "ExamSessions",
-                column: "RequiredBuildingId");
-
-            migrationBuilder.AddForeignKey(
-                name: "FK_ExamSessions_Buildings_RequiredBuildingId",
-                table: "ExamSessions",
-                column: "RequiredBuildingId",
-                principalTable: "Buildings",
-                principalColumn: "Id",
-                onDelete: ReferentialAction.SetNull);
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            // Remove new FK/index
-            migrationBuilder.DropForeignKey(
-                name: "FK_ExamSessions_Buildings_RequiredBuildingId",
-                table: "ExamSessions");
-
-            migrationBuilder.DropForeignKey(
-                name: "FK_ExamSessions_Classrooms_ClassroomId",
-                table: "ExamSessions");
-
-            migrationBuilder.DropIndex(
-                name: "IX_ExamSessions_ClassroomId",
-                table: "ExamSessions");
-
-            migrationBuilder.DropIndex(
-                name: "IX_ExamSessions_ExamPlanId_ExamDate",
-                table: "ExamSessions");
-
-            migrationBuilder.DropIndex(
-                name: "IX_ExamSessions_RequiredBuildingId",
-                table: "ExamSessions");
-
-            // Drop new columns
-            migrationBuilder.DropColumn(name: "RequiredInvigilatorCount", table: "ExamSessions");
-            migrationBuilder.DropColumn(name: "RequiredBuildingId", table: "ExamSessions");
-            migrationBuilder.DropColumn(name: "PeriodCount", table: "ExamSessions");
-            migrationBuilder.DropColumn(name: "StartPeriod", table: "ExamSessions");
-            migrationBuilder.DropColumn(name: "ExamDate", table: "ExamSessions");
-
-            // Restore ClassroomId to non-nullable
-            migrationBuilder.AlterColumn<Guid>(
-                name: "ClassroomId",
-                table: "ExamSessions",
-                type: "char(36)",
-                nullable: false,
-                defaultValue: Guid.Empty,
-                oldClrType: typeof(Guid),
-                oldType: "char(36)",
-                oldNullable: true);
-
-            // Restore original FK/index
-            migrationBuilder.CreateIndex(
-                name: "IX_ExamSessions_ClassroomId",
-                table: "ExamSessions",
-                column: "ClassroomId");
-
-            migrationBuilder.AddForeignKey(
-                name: "FK_ExamSessions_Classrooms_ClassroomId",
-                table: "ExamSessions",
-                column: "ClassroomId",
-                principalTable: "Classrooms",
-                principalColumn: "Id",
-                onDelete: ReferentialAction.Restrict);
-        }
-    }
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725103117_TeachingEvaluation.cs

@@ -1,22 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    /// <inheritdoc />
-    public partial class TeachingEvaluation : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-
-        }
-    }
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725150000_RetakeEnrollment.cs

@@ -1,29 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    /// <inheritdoc />
-    public partial class RetakeEnrollment : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.AddColumn<int>(
-                name: "EnrollmentType",
-                table: "CourseEnrollments",
-                type: "int",
-                nullable: false,
-                defaultValue: 1);
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropColumn(
-                name: "EnrollmentType",
-                table: "CourseEnrollments");
-        }
-    }
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725160000_CourseAdjustments.cs

@@ -1,125 +0,0 @@
-using System;
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    /// <inheritdoc />
-    public partial class CourseAdjustments : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.CreateTable(
-                name: "CourseAdjustments",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                    TeachingTaskId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    Type = table.Column<int>(type: "int", nullable: false),
-                    Status = table.Column<int>(type: "int", nullable: false),
-                    ApplicantUserId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    TargetDate = table.Column<DateOnly>(type: "date", nullable: true),
-                    DayOfWeek = table.Column<int>(type: "int", nullable: true),
-                    StartPeriod = table.Column<int>(type: "int", nullable: true),
-                    PeriodCount = table.Column<int>(type: "int", nullable: true),
-                    ClassroomId = table.Column<Guid>(type: "char(36)", nullable: true),
-                    SubstituteTeacherId = table.Column<Guid>(type: "char(36)", nullable: true),
-                    CancelWeek = table.Column<int>(type: "int", nullable: true),
-                    CancelDate = table.Column<DateOnly>(type: "date", nullable: true),
-                    Reason = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: false),
-                    ReviewComment = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: true),
-                    SubmittedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                    ReviewedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                    ReviewedByUserId = table.Column<Guid>(type: "char(36)", nullable: true),
-                    CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                    UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_CourseAdjustments", x => x.Id);
-                    table.ForeignKey(
-                        name: "FK_CourseAdjustments_Classrooms_ClassroomId",
-                        column: x => x.ClassroomId,
-                        principalTable: "Classrooms",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.SetNull);
-                    table.ForeignKey(
-                        name: "FK_CourseAdjustments_Teachers_SubstituteTeacherId",
-                        column: x => x.SubstituteTeacherId,
-                        principalTable: "Teachers",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.SetNull);
-                    table.ForeignKey(
-                        name: "FK_CourseAdjustments_TeachingTasks_TeachingTaskId",
-                        column: x => x.TeachingTaskId,
-                        principalTable: "TeachingTasks",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Restrict);
-                })
-                .Annotation("MySQL:Charset", "utf8mb4");
-
-            migrationBuilder.CreateTable(
-                name: "Notifications",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                    UserId = table.Column<Guid>(type: "char(36)", nullable: false),
-                    Title = table.Column<string>(type: "varchar(200)", maxLength: 200, nullable: false),
-                    Content = table.Column<string>(type: "varchar(1000)", maxLength: 1000, nullable: false),
-                    IsRead = table.Column<bool>(type: "tinyint(1)", nullable: false),
-                    LinkUrl = table.Column<string>(type: "varchar(300)", maxLength: 300, nullable: true),
-                    CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                    UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_Notifications", x => x.Id);
-                })
-                .Annotation("MySQL:Charset", "utf8mb4");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_CourseAdjustments_ApplicantUserId",
-                table: "CourseAdjustments",
-                column: "ApplicantUserId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_CourseAdjustments_ClassroomId",
-                table: "CourseAdjustments",
-                column: "ClassroomId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_CourseAdjustments_Status_CreatedAt",
-                table: "CourseAdjustments",
-                columns: new[] { "Status", "CreatedAt" });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_CourseAdjustments_SubstituteTeacherId",
-                table: "CourseAdjustments",
-                column: "SubstituteTeacherId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_CourseAdjustments_TeachingTaskId_Status",
-                table: "CourseAdjustments",
-                columns: new[] { "TeachingTaskId", "Status" });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_Notifications_CreatedAt",
-                table: "Notifications",
-                column: "CreatedAt");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_Notifications_UserId_IsRead",
-                table: "Notifications",
-                columns: new[] { "UserId", "IsRead" });
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropTable(name: "Notifications");
-            migrationBuilder.DropTable(name: "CourseAdjustments");
-        }
-    }
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725170000_AttendanceAppeal.cs

@@ -1,66 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    /// <inheritdoc />
-    public partial class AttendanceAppeal : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.AddColumn<int>(
-                name: "AppealStatus",
-                table: "AttendanceRecords",
-                type: "int",
-                nullable: false,
-                defaultValue: 0);
-
-            migrationBuilder.AddColumn<string>(
-                name: "AppealReason",
-                table: "AttendanceRecords",
-                type: "varchar(500)",
-                maxLength: 500,
-                nullable: true);
-
-            migrationBuilder.AddColumn<DateTime>(
-                name: "AppealSubmittedAt",
-                table: "AttendanceRecords",
-                type: "datetime(6)",
-                nullable: true);
-
-            migrationBuilder.AddColumn<string>(
-                name: "AppealReviewComment",
-                table: "AttendanceRecords",
-                type: "varchar(300)",
-                maxLength: 300,
-                nullable: true);
-
-            migrationBuilder.AddColumn<DateTime>(
-                name: "AppealReviewedAt",
-                table: "AttendanceRecords",
-                type: "datetime(6)",
-                nullable: true);
-
-            migrationBuilder.CreateIndex(
-                name: "IX_AttendanceRecords_AppealStatus",
-                table: "AttendanceRecords",
-                column: "AppealStatus");
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropIndex(
-                name: "IX_AttendanceRecords_AppealStatus",
-                table: "AttendanceRecords");
-
-            migrationBuilder.DropColumn(name: "AppealReviewedAt", table: "AttendanceRecords");
-            migrationBuilder.DropColumn(name: "AppealReviewComment", table: "AttendanceRecords");
-            migrationBuilder.DropColumn(name: "AppealSubmittedAt", table: "AttendanceRecords");
-            migrationBuilder.DropColumn(name: "AppealReason", table: "AttendanceRecords");
-            migrationBuilder.DropColumn(name: "AppealStatus", table: "AttendanceRecords");
-        }
-    }
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725180000_ApprovalRequests.cs

@@ -1,117 +0,0 @@
-using System;
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    public partial class ApprovalRequests : Migration
-    {
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            // CourseExemption
-            migrationBuilder.CreateTable("CourseExemptions", table => new
-            {
-                Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                StudentId = table.Column<Guid>(type: "char(36)", nullable: false),
-                TeachingTaskId = table.Column<Guid>(type: "char(36)", nullable: false),
-                Reason = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: false),
-                Status = table.Column<int>(type: "int", nullable: false),
-                ReviewComment = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: true),
-                SubmittedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                ReviewedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                ReviewedByUserId = table.Column<Guid>(type: "char(36)", nullable: true),
-                CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-            }, constraints: table =>
-            {
-                table.PrimaryKey("PK_CourseExemptions", x => x.Id);
-                table.ForeignKey("FK_CourseExemptions_Students", x => x.StudentId, "Students", "Id", onDelete: ReferentialAction.Restrict);
-                table.ForeignKey("FK_CourseExemptions_TeachingTasks", x => x.TeachingTaskId, "TeachingTasks", "Id", onDelete: ReferentialAction.Restrict);
-            });
-            migrationBuilder.CreateIndex("IX_CourseExemptions_Status_CreatedAt", "CourseExemptions", new[] { "Status", "CreatedAt" });
-            migrationBuilder.CreateIndex("IX_CourseExemptions_StudentId_TeachingTaskId", "CourseExemptions", new[] { "StudentId", "TeachingTaskId" }, unique: true);
-
-            // DeferredExam
-            migrationBuilder.CreateTable("DeferredExams", table => new
-            {
-                Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                StudentId = table.Column<Guid>(type: "char(36)", nullable: false),
-                TeachingTaskId = table.Column<Guid>(type: "char(36)", nullable: false),
-                Reason = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: false),
-                Status = table.Column<int>(type: "int", nullable: false),
-                ReviewComment = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: true),
-                SubmittedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                ReviewedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                ReviewedByUserId = table.Column<Guid>(type: "char(36)", nullable: true),
-                CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-            }, constraints: table =>
-            {
-                table.PrimaryKey("PK_DeferredExams", x => x.Id);
-                table.ForeignKey("FK_DeferredExams_Students", x => x.StudentId, "Students", "Id", onDelete: ReferentialAction.Restrict);
-                table.ForeignKey("FK_DeferredExams_TeachingTasks", x => x.TeachingTaskId, "TeachingTasks", "Id", onDelete: ReferentialAction.Restrict);
-            });
-            migrationBuilder.CreateIndex("IX_DeferredExams_Status_CreatedAt", "DeferredExams", new[] { "Status", "CreatedAt" });
-            migrationBuilder.CreateIndex("IX_DeferredExams_StudentId_TeachingTaskId", "DeferredExams", new[] { "StudentId", "TeachingTaskId" }, unique: true);
-
-            // GradeModification
-            migrationBuilder.CreateTable("GradeModifications", table => new
-            {
-                Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                GradeRecordId = table.Column<Guid>(type: "char(36)", nullable: false),
-                CurrentScore = table.Column<decimal>(type: "decimal(5,1)", precision: 5, scale: 1, nullable: false),
-                RequestedScore = table.Column<decimal>(type: "decimal(5,1)", precision: 5, scale: 1, nullable: false),
-                Reason = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: false),
-                Status = table.Column<int>(type: "int", nullable: false),
-                ReviewComment = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: true),
-                ApplicantUserId = table.Column<Guid>(type: "char(36)", nullable: false),
-                SubmittedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                CollegeReviewedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                CollegeReviewedByUserId = table.Column<Guid>(type: "char(36)", nullable: true),
-                FinalReviewedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                FinalReviewedByUserId = table.Column<Guid>(type: "char(36)", nullable: true),
-                CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-            }, constraints: table =>
-            {
-                table.PrimaryKey("PK_GradeModifications", x => x.Id);
-                table.ForeignKey("FK_GradeModifications_GradeRecords", x => x.GradeRecordId, "GradeRecords", "Id", onDelete: ReferentialAction.Restrict);
-            });
-            migrationBuilder.CreateIndex("IX_GradeModifications_Status_CreatedAt", "GradeModifications", new[] { "Status", "CreatedAt" });
-
-            // CourseSubstitution
-            migrationBuilder.CreateTable("CourseSubstitutions", table => new
-            {
-                Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                StudentId = table.Column<Guid>(type: "char(36)", nullable: false),
-                OriginalCourseId = table.Column<Guid>(type: "char(36)", nullable: false),
-                SubstituteCourseId = table.Column<Guid>(type: "char(36)", nullable: false),
-                Reason = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: false),
-                Status = table.Column<int>(type: "int", nullable: false),
-                ReviewComment = table.Column<string>(type: "varchar(500)", maxLength: 500, nullable: true),
-                SubmittedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                ReviewedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                ReviewedByUserId = table.Column<Guid>(type: "char(36)", nullable: true),
-                CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-            }, constraints: table =>
-            {
-                table.PrimaryKey("PK_CourseSubstitutions", x => x.Id);
-                table.ForeignKey("FK_CourseSubstitutions_Students", x => x.StudentId, "Students", "Id", onDelete: ReferentialAction.Restrict);
-                table.ForeignKey("FK_CourseSubstitutions_OriginalCourse", x => x.OriginalCourseId, "Courses", "Id", onDelete: ReferentialAction.Restrict);
-                table.ForeignKey("FK_CourseSubstitutions_SubstituteCourse", x => x.SubstituteCourseId, "Courses", "Id", onDelete: ReferentialAction.Restrict);
-            });
-            migrationBuilder.CreateIndex("IX_CourseSubstitutions_Status_CreatedAt", "CourseSubstitutions", new[] { "Status", "CreatedAt" });
-            migrationBuilder.CreateIndex("IX_CourseSubstitutions_StudentId_OriginalCourseId", "CourseSubstitutions", new[] { "StudentId", "OriginalCourseId" }, unique: true);
-        }
-
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropTable("CourseSubstitutions");
-            migrationBuilder.DropTable("GradeModifications");
-            migrationBuilder.DropTable("DeferredExams");
-            migrationBuilder.DropTable("CourseExemptions");
-        }
-    }
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725190000_AcademicWarnings.cs

@@ -1,46 +0,0 @@
-using System;
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    public partial class AcademicWarnings : Migration
-    {
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.CreateTable("WarningRules", table => new
-            {
-                Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                Type = table.Column<int>(type: "int", nullable: false),
-                Name = table.Column<string>(type: "varchar(100)", maxLength: 100, nullable: false),
-                Threshold = table.Column<decimal>(type: "decimal(7,2)", precision: 7, scale: 2, nullable: false),
-                IsEnabled = table.Column<bool>(type: "tinyint(1)", nullable: false),
-                NotifyStudent = table.Column<bool>(type: "tinyint(1)", nullable: false),
-                NotifyCounselor = table.Column<bool>(type: "tinyint(1)", nullable: false),
-                AcademicTermId = table.Column<Guid>(type: "char(36)", nullable: false),
-                Description = table.Column<string>(type: "varchar(300)", maxLength: 300, nullable: true),
-                CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-            }, constraints: t => { t.PrimaryKey("PK_WarningRules", x => x.Id); t.ForeignKey("FK_WarningRules_AcademicTerms", x => x.AcademicTermId, "AcademicTerms", "Id", onDelete: ReferentialAction.Cascade); });
-            migrationBuilder.CreateIndex("IX_WarningRules_AcademicTermId_Type", "WarningRules", new[] { "AcademicTermId", "Type" }, unique: true);
-
-            migrationBuilder.CreateTable("WarningRecords", table => new
-            {
-                Id = table.Column<Guid>(type: "char(36)", nullable: false),
-                StudentId = table.Column<Guid>(type: "char(36)", nullable: false),
-                Type = table.Column<int>(type: "int", nullable: false),
-                Status = table.Column<int>(type: "int", nullable: false),
-                TriggerValue = table.Column<decimal>(type: "decimal(7,2)", precision: 7, scale: 2, nullable: false),
-                Detail = table.Column<string>(type: "varchar(1000)", maxLength: 1000, nullable: false),
-                AcknowledgedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
-                AcknowledgeComment = table.Column<string>(type: "varchar(300)", maxLength: 300, nullable: true),
-                AcademicTermId = table.Column<Guid>(type: "char(36)", nullable: false),
-                CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
-                UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
-            }, constraints: t => { t.PrimaryKey("PK_WarningRecords", x => x.Id); t.ForeignKey("FK_WarningRecords_Students", x => x.StudentId, "Students", "Id", onDelete: ReferentialAction.Restrict); });
-            migrationBuilder.CreateIndex("IX_WarningRecords_StudentId_AcademicTermId_Type", "WarningRecords", new[] { "StudentId", "AcademicTermId", "Type" }, unique: true);
-            migrationBuilder.CreateIndex("IX_WarningRecords_Status", "WarningRecords", "Status");
-        }
-        protected override void Down(MigrationBuilder migrationBuilder) { migrationBuilder.DropTable("WarningRecords"); migrationBuilder.DropTable("WarningRules"); }
-    }
-}

src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260725200000_WarningAutoCheck.cs

@@ -1,27 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
-{
-    public partial class WarningAutoCheck : Migration
-    {
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropTable("WarningSchedules");
-            migrationBuilder.AddColumn<bool>("AutoCheckEnabled", "WarningRules", type: "tinyint(1)", nullable: false, defaultValue: false);
-            migrationBuilder.AddColumn<int?>("CheckDayOfWeek", "WarningRules", type: "int", nullable: true);
-            migrationBuilder.AddColumn<int>("CheckHour", "WarningRules", type: "int", nullable: false, defaultValue: 8);
-            migrationBuilder.AddColumn<int>("CheckMinute", "WarningRules", type: "int", nullable: false, defaultValue: 0);
-            migrationBuilder.AddColumn<DateTime?>("LastCheckAt", "WarningRules", type: "datetime(6)", nullable: true);
-        }
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropColumn("LastCheckAt", "WarningRules");
-            migrationBuilder.DropColumn("CheckMinute", "WarningRules");
-            migrationBuilder.DropColumn("CheckHour", "WarningRules");
-            migrationBuilder.DropColumn("CheckDayOfWeek", "WarningRules");
-            migrationBuilder.DropColumn("AutoCheckEnabled", "WarningRules");
-            // WarningSchedules table recreation omitted for brevity
-        }
-    }
-}

src/Jiaowu.Api/Jiaowu.Api.csproj

@@ -6,10 +6,13 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <SpaRoot>$([System.IO.Path]::GetFullPath('$(MSBuildProjectDirectory)/../../web'))</SpaRoot>
     <BuildFrontendOnPublish Condition="'$(BuildFrontendOnPublish)' == ''">true</BuildFrontendOnPublish>
+    <NpmCommand Condition="'$(OS)' == 'Windows_NT'">call npm.cmd</NpmCommand>
+    <NpmCommand Condition="'$(NpmCommand)' == ''">npm</NpmCommand>
   </PropertyGroup>
 
   <ItemGroup>
     <Content Remove="wwwroot\**\*" />
+    <Content Update="appsettings.Development.json" CopyToPublishDirectory="Never" />
   </ItemGroup>
 
   <ItemGroup>
@@ -29,10 +32,19 @@
   <Target
     Name="BuildVueFrontendForPublish"
     AfterTargets="ComputeFilesToPublish"
-    Condition="'$(BuildFrontendOnPublish)' == 'true' and Exists('$(SpaRoot)/package.json')">
-    <Message Importance="high" Text="Building Vue frontend for ASP.NET Core publish..." />
-    <Exec WorkingDirectory="$(SpaRoot)" Command="npm ci" />
-    <Exec WorkingDirectory="$(SpaRoot)" Command="npm run build" />
+    Condition="Exists('$(SpaRoot)/package.json')">
+    <Message
+      Condition="'$(BuildFrontendOnPublish)' == 'true'"
+      Importance="high"
+      Text="Building Vue frontend for ASP.NET Core publish..." />
+    <Exec
+      Condition="'$(BuildFrontendOnPublish)' == 'true'"
+      WorkingDirectory="$(SpaRoot)"
+      Command="$(NpmCommand) ci" />
+    <Exec
+      Condition="'$(BuildFrontendOnPublish)' == 'true'"
+      WorkingDirectory="$(SpaRoot)"
+      Command="$(NpmCommand) run build" />
 
     <ItemGroup>
       <FrontendFiles Include="$(MSBuildProjectDirectory)\wwwroot\**\*" />

src/Jiaowu.Api/Jiaowu.Api.http

@@ -1,14 +0,0 @@
-@Host = http://localhost:5255
-
-GET {{Host}}/health
-Accept: application/json
-
-###
-
-POST {{Host}}/api/auth/login
-Content-Type: application/json
-
-{
-  "userName": "admin",
-  "password": "Admin@123456"
-}

src/Jiaowu.Api/Program.cs

@@ -27,7 +27,22 @@ if (databaseOptions.Provider.Equals("SQLite", StringComparison.OrdinalIgnoreCase
     throw new InvalidOperationException("SQLite 仅允许在 Development 环境使用。生产环境请配置 MySql。");
 }
 
-builder.Services.AddDbContext<AppDbContext>(options =>
+var allowedHosts = builder.Configuration["AllowedHosts"];
+if (!builder.Environment.IsDevelopment() &&
+    (string.IsNullOrWhiteSpace(allowedHosts) || allowedHosts == "*"))
+{
+    throw new InvalidOperationException(
+        "生产环境必须通过 AllowedHosts 配置明确的访问域名，不能使用通配符。");
+}
+
+if (databaseOptions.CommandTimeoutSeconds is < 5 or > 300)
+{
+    throw new InvalidOperationException(
+        "Database:CommandTimeoutSeconds 必须在 5 到 300 秒之间。");
+}
+
+builder.Services.AddSingleton(databaseOptions);
+builder.Services.AddDbContextPool<AppDbContext>(options =>
 {
     if (databaseOptions.Provider.Equals("SQLite", StringComparison.OrdinalIgnoreCase))
     {
@@ -59,7 +74,14 @@ builder.Services.AddDbContext<AppDbContext>(options =>
         throw new InvalidOperationException(
             "缺少 MySQL 连接串。请通过 ConnectionStrings__MySql 环境变量配置。");
     }
-    options.UseMySQL(connectionString);
+    options.UseMySQL(connectionString, mySqlOptions =>
+    {
+        mySqlOptions.CommandTimeout(databaseOptions.CommandTimeoutSeconds);
+        mySqlOptions.EnableRetryOnFailure(
+            maxRetryCount: 5,
+            maxRetryDelay: TimeSpan.FromSeconds(10),
+            errorNumbersToAdd: null);
+    });
 });
 
 builder.Services
@@ -79,9 +101,11 @@ builder.Services
 
 var jwtOptions = builder.Configuration.GetSection(JwtOptions.SectionName).Get<JwtOptions>()
     ?? throw new InvalidOperationException("缺少 Jwt 配置。");
-if (Encoding.UTF8.GetByteCount(jwtOptions.Key) < 32)
+if (Encoding.UTF8.GetByteCount(jwtOptions.Key) < 32 ||
+    jwtOptions.Key.Contains("REPLACE", StringComparison.OrdinalIgnoreCase))
 {
-    throw new InvalidOperationException("Jwt:Key 至少需要 32 字节。");
+    throw new InvalidOperationException(
+        "Jwt:Key 必须配置为至少 32 字节的随机生产密钥，不能使用示例值。");
 }
 
 builder.Services.Configure<JwtOptions>(
@@ -92,7 +116,6 @@ builder.Services.AddScoped<ICurrentUserDataScope, CurrentUserDataScope>();
 builder.Services.AddScoped<DatabaseInitializer>();
 builder.Services.AddScoped<DevelopmentSqliteMigrator>();
 builder.Services.AddScoped<TimetableDataService>();
-builder.Services.AddScoped<DevelopmentDemoDataSeeder>();
 builder.Services.AddScoped<AutomaticScheduleGenerator>();
 builder.Services.AddScoped<AutomaticScheduleJobProcessor>();
 builder.Services.AddSingleton<AutomaticScheduleJobQueue>();
@@ -147,13 +170,17 @@ builder.Services.AddCors(options =>
     options.AddPolicy("Web", policy =>
     {
         var origins = builder.Configuration.GetSection("Cors:Origins").Get<string[]>()
-            ?? ["http://localhost:5173"];
-        policy.WithOrigins(origins)
-            .AllowAnyHeader()
-            .AllowAnyMethod();
+            ?? [];
+        if (origins.Length > 0)
+        {
+            policy.WithOrigins(origins)
+                .AllowAnyHeader()
+                .AllowAnyMethod();
+        }
     });
 });
 
+builder.Services.AddResponseCompression(options => options.EnableForHttps = true);
 builder.Services.AddProblemDetails();
 builder.Services.AddExceptionHandler(options =>
 {
@@ -215,6 +242,7 @@ builder.Services.AddSwaggerGen(options =>
 var app = builder.Build();
 
 app.UseExceptionHandler();
+app.UseResponseCompression();
 if (app.Environment.IsDevelopment())
 {
     app.UseSwagger();
@@ -246,13 +274,10 @@ app.UseAuthentication();
 app.UseAuthorization();
 app.UseMiddleware<AuditMiddleware>();
 app.MapControllers();
-app.MapGet("/health", () => Results.Ok(new
-{
-    Status = "healthy",
-    Database = databaseOptions.Provider,
-    Environment = app.Environment.EnvironmentName,
-    Time = DateTimeOffset.UtcNow
-})).AllowAnonymous();
+app.MapGet("/health/live", () => Results.Ok(new { Status = "healthy" }))
+    .AllowAnonymous();
+app.MapGet("/health", CheckDatabaseHealthAsync).AllowAnonymous();
+app.MapGet("/health/ready", CheckDatabaseHealthAsync).AllowAnonymous();
 app.MapFallback(async context =>
 {
     if (context.Request.Path.StartsWithSegments("/api") ||
@@ -280,14 +305,35 @@ app.MapFallback(async context =>
 using (var scope = app.Services.CreateScope())
 {
     await scope.ServiceProvider.GetRequiredService<DatabaseInitializer>()
-        .InitializeAsync();
+        .InitializeAsync(
+            args.Contains("--migrate-only", StringComparer.OrdinalIgnoreCase));
 }
 
-if (args.Contains("--seed-only", StringComparer.OrdinalIgnoreCase))
+if (args.Contains("--migrate-only", StringComparer.OrdinalIgnoreCase))
 {
     return;
 }
 
 app.Run();
 
+static async Task<IResult> CheckDatabaseHealthAsync(
+    AppDbContext db,
+    CancellationToken cancellationToken)
+{
+    try
+    {
+        return await db.Database.CanConnectAsync(cancellationToken)
+            ? Results.Ok(new { Status = "healthy" })
+            : Results.Json(
+                new { Status = "unhealthy" },
+                statusCode: StatusCodes.Status503ServiceUnavailable);
+    }
+    catch
+    {
+        return Results.Json(
+            new { Status = "unhealthy" },
+            statusCode: StatusCodes.Status503ServiceUnavailable);
+    }
+}
+
 public partial class Program;

src/Jiaowu.Api/appsettings.Development.json

@@ -6,12 +6,13 @@
     "SQLite": "Data Source=data/jiaowu-dev.sqlite"
   },
   "Jwt": {
-    "Key": "jiaowu-development-secret-key-change-before-production"
+    "Key": "jiaowu-development-secret-key-change-before-production",
+    "ExpireMinutes": 480
   },
-  "SeedAdmin": {
-    "UserName": "admin",
-    "Password": "Admin@123456",
-    "DisplayName": "系统管理员"
+  "Cors": {
+    "Origins": [
+      "http://localhost:5173"
+    ]
   },
   "Logging": {
     "LogLevel": {

src/Jiaowu.Api/appsettings.json

@@ -1,6 +1,8 @@
 {
   "Database": {
-    "Provider": "MySql"
+    "Provider": "MySql",
+    "ApplyMigrationsOnStartup": false,
+    "CommandTimeoutSeconds": 30
   },
   "ConnectionStrings": {
     "MySql": ""
@@ -8,13 +10,11 @@
   "Jwt": {
     "Issuer": "Jiaowu.Api",
     "Audience": "Jiaowu.Web",
-    "Key": "REPLACE_IN_PRODUCTION_WITH_A_LONG_RANDOM_SECRET",
-    "ExpireMinutes": 480
+    "Key": "",
+    "ExpireMinutes": 60
   },
   "Cors": {
-    "Origins": [
-      "http://localhost:5173"
-    ]
+    "Origins": []
   },
   "Logging": {
     "LogLevel": {

tests/Jiaowu.Api.Tests/GradeCalculatorTests.cs

@@ -18,7 +18,10 @@ public sealed class GradeCalculatorTests
     {
         Assert.Equal(
             expected,
-            GradeCalculator.AreWeightsValid(regular, midterm, final));
+            GradeCalculator.AreWeightsValid(
+                regular,
+                final,
+                [new GradeItem { Name = "期中成绩", Weight = midterm }]));
     }
 
     [Fact]
@@ -26,11 +29,11 @@ public sealed class GradeCalculatorTests
     {
         var total = GradeCalculator.CalculateTotal(
             83,
-            null,
             91,
+            [],
             30,
-            0,
             70,
+            [],
             GradeExamStatus.Normal);
 
         Assert.Equal(88.6m, total);
@@ -43,10 +46,10 @@ public sealed class GradeCalculatorTests
         Assert.Null(GradeCalculator.CalculateTotal(
             83,
             null,
-            null,
+            [],
             30,
-            0,
             70,
+            [],
             GradeExamStatus.Normal));
     }
 
@@ -56,6 +59,6 @@ public sealed class GradeCalculatorTests
     [InlineData(GradeExamStatus.Exempt)]
     public void Exceptional_exam_status_has_no_numeric_total(GradeExamStatus status)
     {
-        Assert.Null(GradeCalculator.CalculateTotal(90, null, 90, 30, 0, 70, status));
+        Assert.Null(GradeCalculator.CalculateTotal(90, 90, [], 30, 70, [], status));
     }
 }

tests/Jiaowu.Api.Tests/MySqlMigrationTests.cs

@@ -0,0 +1,36 @@
+using Jiaowu.Api.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace Jiaowu.Api.Tests;
+
+public sealed class MySqlMigrationTests
+{
+    private const string LatestMigration =
+        "20260725120917_ProductionSchemaCompletion";
+
+    [Fact]
+    public void Production_migration_is_discoverable_and_generates_mysql_sql()
+    {
+        var options = new DbContextOptionsBuilder<AppDbContext>()
+            .UseMySQL(
+                "Server=localhost;Database=jiaowu;User=__test__;Password=__not_used__;")
+            .Options;
+        using var db = new AppDbContext(options);
+
+        Assert.Contains(LatestMigration, db.Database.GetMigrations());
+
+        var script = db.GetService<IMigrator>().GenerateScript(
+            fromMigration: "20260725040310_SchedulePublishJobs",
+            toMigration: LatestMigration);
+
+        Assert.Contains("CREATE TABLE `GradeItems`", script);
+        Assert.Contains("CREATE TABLE `EvaluationSetups`", script);
+        Assert.Contains("CREATE TABLE `WarningRules`", script);
+        Assert.Contains("SET `ExamDate` = DATE(`StartsAt`)", script);
+        Assert.Contains("DEFAULT 1", script);
+        Assert.DoesNotContain("0001-01-01", script);
+        Assert.DoesNotContain("0000-00-00", script);
+    }
+}

tests/Jiaowu.Api.Tests/TimetableExcelExporterTests.cs

@@ -83,7 +83,8 @@ public sealed class TimetableExcelExporterTests
                     ["李老师"],
                     ["计算机科学 2601 班"],
                     null)
-            ]);
+            ],
+            []);
 
         var bytes = TimetableExcelExporter.Create(timetable);
 

web/src/style.css

@@ -1052,7 +1052,6 @@ button { cursor: pointer; }
 .public-timetable-link { display: block; margin: 14px 0 18px; color: #176b87; font-size: 13px; font-weight: 650; text-align: center; text-decoration: none; }
 .account-activation-link { display: block; margin: -8px 0 18px; color: #315b73; font-size: 13px; font-weight: 650; text-align: center; text-decoration: none; }
 .login-submit { width: 100%; margin-top: 6px; height: 46px; }
-.dev-hint { margin-top: 24px; padding: 13px 15px; display: flex; justify-content: space-between; color: #767e8d; background: #f5f7fa; font-size: 11px; }
 
 @media (max-width: 1100px) {
   .metric-grid { grid-template-columns: repeat(2, 1fr); }

web/src/views/LoginView.vue

@@ -9,8 +9,8 @@ const router = useRouter()
 const auth = useAuthStore()
 const loading = ref(false)
 const form = reactive({
-  userName: String(route.query.userName ?? 'admin'),
-  password: route.query.activated ? '' : 'Admin@123456',
+  userName: String(route.query.userName ?? ''),
+  password: '',
 })
 
 async function submit() {
@@ -84,10 +84,6 @@ async function submit() {
         </el-button>
         <router-link class="public-timetable-link" to="/timetable">无需登录，查询班级课表 →</router-link>
         <router-link class="account-activation-link" to="/activate">学生首次登录？自助激活账号 →</router-link>
-        <div class="dev-hint">
-          <b>本地开发账号</b>
-          <span>admin / Admin@123456</span>
-        </div>
       </form>
     </section>
   </main>