src/Jiaowu.Api/Controllers/DashboardController.cs

@@ -135,9 +135,143 @@ public sealed class DashboardController(
             currentTerm,
             counts,
             pending,
+            await BuildGreetingAsync(scope, currentTermId, counts, pending, cancellationToken),
             DateTime.UtcNow));
     }
 
+    [HttpGet("greeting")]
+    public async Task<ActionResult<DashboardGreeting>> GetGreeting(
+        CancellationToken cancellationToken)
+    {
+        var currentTermId = await db.AcademicTerms.AsNoTracking()
+            .Where(x => x.IsCurrent)
+            .Select(x => (Guid?)x.Id)
+            .FirstOrDefaultAsync(cancellationToken);
+
+        return Ok(await BuildGreetingAsync(
+            currentUserDataScope.Current,
+            currentTermId,
+            null,
+            null,
+            cancellationToken));
+    }
+
+    private async Task<DashboardGreeting> BuildGreetingAsync(
+        CurrentUserScope scope,
+        Guid? currentTermId,
+        DashboardCounts? counts,
+        DashboardPending? pending,
+        CancellationToken cancellationToken)
+    {
+        var name = string.IsNullOrWhiteSpace(scope.DisplayName) ? "" : $"{scope.DisplayName}，";
+        var greeting = GetTimeGreeting();
+        var isManager = scope.IsInRole(SystemRoles.SuperAdmin) ||
+                        scope.IsInRole(SystemRoles.AcademicAdmin) ||
+                        scope.IsInRole(SystemRoles.CollegeAdmin) ||
+                        scope.IsInRole(SystemRoles.Leader) ||
+                        scope.IsInRole(SystemRoles.Counselor);
+
+        if (!isManager && scope.IsInRole(SystemRoles.Student))
+        {
+            var studentId = await db.Students.AsNoTracking()
+                .Where(x => x.UserId == scope.UserId)
+                .Select(x => (Guid?)x.Id)
+                .FirstOrDefaultAsync(cancellationToken);
+            if (!studentId.HasValue)
+                return new DashboardGreeting("Student", $"{name}{greeting}", "绑定学籍后，将为你生成课程与成绩学习概览。", "学习节奏", []);
+
+            var enrollments = db.CourseEnrollments.AsNoTracking().Where(x =>
+                x.StudentId == studentId.Value &&
+                x.Status == CourseEnrollmentStatus.Enrolled &&
+                currentTermId.HasValue &&
+                x.CourseSelectionOffering!.CourseSelectionRound!.AcademicTermId == currentTermId.Value);
+            var selectedCourses = await enrollments.CountAsync(cancellationToken);
+            var selectedCredits = await enrollments.SumAsync(
+                x => (decimal?)x.CourseSelectionOffering!.TeachingTask!.Course!.Credits,
+                cancellationToken) ?? 0;
+            var publishedGrades = db.GradeRecords.AsNoTracking().Where(x =>
+                x.StudentId == studentId.Value &&
+                x.GradeSheet!.Status == GradeSheetStatus.Published);
+            var gradeCount = await publishedGrades.CountAsync(cancellationToken);
+            var average = await publishedGrades
+                .Where(x => x.ExamStatus == GradeExamStatus.Normal && x.TotalScore.HasValue)
+                .AverageAsync(x => (decimal?)x.TotalScore, cancellationToken);
+            var failed = await publishedGrades.CountAsync(x =>
+                x.ExamStatus == GradeExamStatus.Normal && x.TotalScore.HasValue && x.TotalScore < 60,
+                cancellationToken);
+
+            var subtitle = failed > 0
+                ? $"已发布成绩中有 {failed} 门课程需要重点关注，建议优先查看课程反馈。"
+                : selectedCourses > 0
+                    ? $"本学期已选 {selectedCourses} 门课、{selectedCredits:0.#} 学分，保持现在的学习节奏。"
+                    : "本学期暂未发现有效选课记录，可先查看选课安排。";
+            return new DashboardGreeting("Student", $"{name}{greeting}", subtitle, "学习节奏",
+            [
+                new DashboardGreetingInsight("本学期课程", $"{selectedCourses} 门", $"共 {selectedCredits:0.#} 学分", "calm"),
+                new DashboardGreetingInsight("已发布成绩", $"{gradeCount} 门", average.HasValue ? $"平均分 {average.Value:0.0}" : "等待成绩发布", "calm"),
+                new DashboardGreetingInsight("重点关注", $"{failed} 门", failed > 0 ? "建议尽早安排复习与答疑" : "当前无不及格记录", failed > 0 ? "attention" : "positive")
+            ]);
+        }
+
+        if (!isManager && scope.IsInRole(SystemRoles.Teacher))
+        {
+            var teacherId = await db.Teachers.AsNoTracking()
+                .Where(x => x.UserId == scope.UserId && x.Status == TeacherStatus.Active)
+                .Select(x => (Guid?)x.Id)
+                .FirstOrDefaultAsync(cancellationToken);
+            if (!teacherId.HasValue)
+                return new DashboardGreeting("Teacher", $"{name}{greeting}", "绑定教师档案后，将为你生成本学期教学负荷概览。", "教学节奏", []);
+
+            var tasks = db.TeachingTasks.AsNoTracking().Where(x =>
+                currentTermId.HasValue && x.AcademicTermId == currentTermId.Value &&
+                x.Teachers.Any(t => t.TeacherId == teacherId.Value));
+            var teachingClasses = await tasks.CountAsync(cancellationToken);
+            var estimatedHours = await tasks.SumAsync(
+                x => (int?)(x.WeeklyHours * (x.EndWeek - x.StartWeek + 1)), cancellationToken) ?? 0;
+            var gradeSheets = db.GradeSheets.AsNoTracking().Where(x =>
+                x.TeachingTask!.Teachers.Any(t => t.TeacherId == teacherId.Value) &&
+                currentTermId.HasValue && x.TeachingTask.AcademicTermId == currentTermId.Value);
+            var pendingGrades = await gradeSheets.CountAsync(x =>
+                x.Status == GradeSheetStatus.Draft ||
+                x.Status == GradeSheetStatus.Returned, cancellationToken);
+            var submittedGrades = await gradeSheets.CountAsync(x => x.Status == GradeSheetStatus.Submitted, cancellationToken);
+            var subtitle = pendingGrades > 0
+                ? $"有 {pendingGrades} 张成绩登记册尚待提交，完成后可进入审核流程。"
+                : teachingClasses > 0
+                    ? $"本学期承担 {teachingClasses} 个教学班，预计授课 {estimatedHours} 学时。"
+                    : "本学期暂未分配教学班，请留意教学任务安排。";
+            return new DashboardGreeting("Teacher", $"{name}{greeting}", subtitle, "教学节奏",
+            [
+                new DashboardGreetingInsight("教学班", $"{teachingClasses} 个", $"预计 {estimatedHours} 学时", "calm"),
+                new DashboardGreetingInsight("待提交成绩", $"{pendingGrades} 张", pendingGrades > 0 ? "请在截止日前完成登记" : "当前无需提交", pendingGrades > 0 ? "attention" : "positive"),
+                new DashboardGreetingInsight("审核中成绩", $"{submittedGrades} 张", submittedGrades > 0 ? "等待审核结果" : "暂无审核中登记册", "calm")
+            ]);
+        }
+
+        var actionable = pending is null ? 0 : pending.TeacherApplications + pending.GradeSheets +
+            pending.CourseAdjustments + pending.StudentStatusChanges + pending.GradeModifications +
+            pending.ClassroomReservations + pending.GeneralApprovals;
+        var taskCount = counts?.TeachingTasks ?? 0;
+        var scheduledCount = counts?.ScheduledTeachingTasks ?? 0;
+        var subtitleForManager = actionable > 0
+            ? $"当前有 {actionable} 项待办需要跟进，优先处理时效性审核事项。"
+            : taskCount > 0
+                ? $"本学期 {taskCount} 个教学班正在运行，当前没有积压待办。"
+                : "当前学期运行数据已就绪，可从教学任务开始推进。";
+        return new DashboardGreeting("Manager", $"{name}{greeting}", subtitleForManager, "运行态势",
+        [
+            new DashboardGreetingInsight("当前待办", $"{actionable} 项", actionable > 0 ? "优先处理可操作事项" : "暂无积压", actionable > 0 ? "attention" : "positive"),
+            new DashboardGreetingInsight("本学期教学班", $"{taskCount} 个", "教学运行规模", "calm"),
+            new DashboardGreetingInsight("已进入课表", $"{scheduledCount} 个", taskCount > 0 ? $"覆盖 {Math.Round(scheduledCount * 100d / taskCount)}% 教学班" : "等待教学任务发布", "calm")
+        ]);
+    }
+
+    private static string GetTimeGreeting()
+    {
+        var hour = DateTime.UtcNow.AddHours(8).Hour;
+        return hour < 11 ? "早上好" : hour < 14 ? "中午好" : hour < 18 ? "下午好" : "晚上好";
+    }
+
     private async Task<DashboardPending> LoadPendingAsync(
         CurrentUserScope scope,
         Guid? restrictedCollegeId,
@@ -276,8 +410,22 @@ public sealed record DashboardResponse(
     DashboardTerm? CurrentTerm,
     DashboardCounts Counts,
     DashboardPending Pending,
+    DashboardGreeting Greeting,
     DateTime GeneratedAt);
 
+public sealed record DashboardGreeting(
+    string Role,
+    string Title,
+    string Subtitle,
+    string Label,
+    IReadOnlyList<DashboardGreetingInsight> Insights);
+
+public sealed record DashboardGreetingInsight(
+    string Label,
+    string Value,
+    string Hint,
+    string Tone);
+
 public sealed record DashboardAudience(
     string Level,
     string Title,

web/src/views/DashboardView.vue

@@ -57,9 +57,23 @@ interface DashboardData {
     classroomReservations: number
     generalApprovals: number
   }
+  greeting: DashboardGreeting
   generatedAt: string
 }
 
+interface DashboardGreeting {
+  role: string
+  title: string
+  subtitle: string
+  label: string
+  insights: Array<{
+    label: string
+    value: string
+    hint: string
+    tone: 'calm' | 'positive' | 'attention'
+  }>
+}
+
 interface DashboardLink {
   key: string
   label: string
@@ -390,8 +404,8 @@ onMounted(async () => {
             <i>数据范围</i>
           </div>
           <p class="overview-eyebrow">ACADEMIC OPERATIONS</p>
-          <h1>{{ data.audience.title }}</h1>
+          <h1>{{ data.greeting.title }}</h1>
-          <p class="overview-description">{{ data.audience.description }}</p>
+          <p class="overview-description">{{ data.greeting.subtitle }}</p>
         </div>
 
         <button class="pending-brief" type="button" @click="router.push(primaryActionRoute)">
@@ -436,6 +450,21 @@ onMounted(async () => {
         </div>
       </section>
 
+      <section class="greeting-insights" :aria-label="data.greeting.label">
+        <span class="greeting-insights-label">{{ data.greeting.label }}</span>
+        <div>
+          <article
+            v-for="insight in data.greeting.insights"
+            :key="insight.label"
+            :class="`greeting-insight ${insight.tone}`"
+          >
+            <span>{{ insight.label }}</span>
+            <strong>{{ insight.value }}</strong>
+            <small>{{ insight.hint }}</small>
+          </article>
+        </div>
+      </section>
+
       <section class="overview-metrics" aria-label="关键教学数据">
         <button
           v-for="metric in adminMetrics"
@@ -586,6 +615,43 @@ onMounted(async () => {
   background-size: 32px 32px, 32px 32px, auto;
 }
 
+.greeting-insights {
+  display: grid;
+  grid-template-columns: 120px minmax(0, 1fr);
+  gap: 18px;
+  align-items: stretch;
+  padding: 17px 21px;
+  border: 1px solid #dce6eb;
+  background: #f7faf9;
+}
+
+.greeting-insights-label {
+  align-self: center;
+  color: var(--dashboard-teal);
+  font: 700 10px/1.5 Consolas, monospace;
+  letter-spacing: .12em;
+}
+
+.greeting-insights > div {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 10px;
+}
+
+.greeting-insight {
+  min-width: 0;
+  padding-left: 13px;
+  display: grid;
+  gap: 3px;
+  border-left: 2px solid #a9bcc6;
+}
+
+.greeting-insight.positive { border-color: var(--dashboard-teal); }
+.greeting-insight.attention { border-color: var(--dashboard-amber); }
+.greeting-insight span { color: #687788; font-size: 11px; }
+.greeting-insight strong { color: var(--dashboard-navy); font-size: 20px; }
+.greeting-insight small { overflow: hidden; color: #84909d; font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
+
 .overview-hero::after {
   content: "";
   position: absolute;
@@ -1155,6 +1221,7 @@ button:focus-visible {
 }
 
 @media (max-width: 1100px) {
+  .greeting-insights { grid-template-columns: 1fr; gap: 12px; }
   .dashboard-work-grid {
     grid-template-columns: 1fr;
   }
@@ -1170,6 +1237,8 @@ button:focus-visible {
 }
 
 @media (max-width: 760px) {
+  .greeting-insights { padding: 15px; }
+  .greeting-insights > div { grid-template-columns: 1fr; }
   .admin-dashboard { gap: 10px; }
 
   .overview-hero {

web/src/views/StudentDashboardView.vue

@@ -70,6 +70,18 @@ interface GradeItem {
   publishedAt?: string
 }
 
+interface DashboardGreeting {
+  title: string
+  subtitle: string
+  label: string
+  insights: Array<{
+    label: string
+    value: string
+    hint: string
+    tone: 'calm' | 'positive' | 'attention'
+  }>
+}
+
 const router = useRouter()
 const auth = useAuthStore()
 const loading = ref(true)
@@ -79,6 +91,7 @@ const notifications = ref<NotificationItem[]>([])
 const unreadCount = ref(0)
 const exams = ref<ExamItem[]>([])
 const grades = ref<GradeItem[]>([])
+const dashboardGreeting = ref<DashboardGreeting | null>(null)
 const now = ref(new Date())
 
 const categoryLabels: Record<string, string> = {
@@ -281,6 +294,7 @@ async function loadOverview() {
     http.get('/notifications', { params: { page: 1, pageSize: 5 } }),
     http.get('/exams/my-schedule'),
     http.get('/grades/student/transcript'),
+    http.get<DashboardGreeting>('/dashboard/greeting'),
   ])
 
   if (results[0].status === 'fulfilled') {
@@ -304,6 +318,9 @@ async function loadOverview() {
   } else {
     failedSections.value.push('考试成绩')
   }
+  if (results[4].status === 'fulfilled') {
+    dashboardGreeting.value = results[4].value.data
+  }
   loading.value = false
 }
 
@@ -315,8 +332,8 @@ onMounted(loadOverview)
     <section class="student-overview-hero">
       <div class="student-hero-copy">
         <span class="section-kicker">MY ACADEMIC DAY</span>
-        <h2>{{ greeting }}，{{ auth.user?.displayName ?? '同学' }}</h2>
+        <h2>{{ dashboardGreeting?.title ?? `${greeting}，${auth.user?.displayName ?? '同学'}` }}</h2>
-        <p>{{ todayLabel }}<template v-if="timetable?.term"> · {{ timetable.term.name }}</template></p>
+        <p>{{ dashboardGreeting?.subtitle ?? todayLabel }}<template v-if="!dashboardGreeting && timetable?.term"> · {{ timetable.term.name }}</template></p>
       </div>
       <div class="today-status">
         <span>今日课程</span>
@@ -325,6 +342,15 @@ onMounted(loadOverview)
       </div>
     </section>
 
+    <section v-if="dashboardGreeting?.insights.length" class="student-greeting-insights" :aria-label="dashboardGreeting.label">
+      <span>{{ dashboardGreeting.label }}</span>
+      <article v-for="insight in dashboardGreeting.insights" :key="insight.label" :class="insight.tone">
+        <small>{{ insight.label }}</small>
+        <strong>{{ insight.value }}</strong>
+        <em>{{ insight.hint }}</em>
+      </article>
+    </section>
+
     <el-alert
       v-if="failedSections.length"
       type="warning"
@@ -539,6 +565,36 @@ onMounted(loadOverview)
   font-size: 13px;
 }
 
+.student-greeting-insights {
+  padding: 15px 21px;
+  display: grid;
+  grid-template-columns: 105px repeat(3, minmax(0, 1fr));
+  gap: 12px;
+  border: 1px solid #dce6eb;
+  background: #f7faf9;
+}
+
+.student-greeting-insights > span {
+  align-self: center;
+  color: var(--teal);
+  font: 700 10px/1.5 Consolas, monospace;
+  letter-spacing: .11em;
+}
+
+.student-greeting-insights article {
+  min-width: 0;
+  padding-left: 12px;
+  display: grid;
+  gap: 3px;
+  border-left: 2px solid #a9bcc6;
+}
+
+.student-greeting-insights article.positive { border-color: var(--teal); }
+.student-greeting-insights article.attention { border-color: #c4812a; }
+.student-greeting-insights small { color: #667488; font-size: 10px; }
+.student-greeting-insights strong { color: var(--ink); font-size: 19px; }
+.student-greeting-insights em { overflow: hidden; color: var(--muted); font-size: 10px; font-style: normal; text-overflow: ellipsis; white-space: nowrap; }
+
 .today-status {
   min-width: 180px;
   margin-left: auto;
@@ -871,12 +927,14 @@ onMounted(loadOverview)
 }
 
 @media (max-width: 980px) {
+  .student-greeting-insights { grid-template-columns: 1fr repeat(3, minmax(0, 1fr)); }
   .student-overview-grid {
     grid-template-columns: 1fr;
   }
 }
 
 @media (max-width: 600px) {
+  .student-greeting-insights { padding: 15px 18px; grid-template-columns: 1fr; }
   .student-overview {
     gap: 12px;
   }