diff --git a/build_ui/src/api/train/attendance.js b/build_ui/src/api/train/attendance.js
index 42451341f..98a4d185c 100644
--- a/build_ui/src/api/train/attendance.js
+++ b/build_ui/src/api/train/attendance.js
@@ -26,3 +26,12 @@ export function adjustAttendance(checkinId, data) {
     data: data
   })
 }
+
+// 3.4 课次学员考勤名册 (纯只读，供培训管理员点名首次签到)
+export function getLessonRoster(lessonId) {
+  return request({
+    url: `/train/attendance/lessons/${lessonId}/roster`,
+    method: 'get'
+  })
+}
+
diff --git a/build_ui/src/views/train/checkin/index.vue b/build_ui/src/views/train/checkin/index.vue
index 57748824f..624a54f3e 100644
--- a/build_ui/src/views/train/checkin/index.vue
+++ b/build_ui/src/views/train/checkin/index.vue
@@ -1,87 +1,214 @@
 <template>
   <div class="app-container">
-    <el-form v-show="showSearch" ref="queryForm" :model="queryParams" size="small" :inline="true">
-      <el-form-item label="培训计划" prop="planName">
-        <el-input v-model="queryParams.planName" placeholder="请输入计划名称" clearable @keyup.enter.native="handleQuery" />
-      </el-form-item>
-      <el-form-item label="学员" prop="studentName">
-        <el-input v-model="queryParams.studentName" placeholder="请输入学员姓名" clearable @keyup.enter.native="handleQuery" />
-      </el-form-item>
-      <el-form-item label="课程" prop="courseName">
-        <el-input v-model="queryParams.courseName" placeholder="请输入课程名称" clearable @keyup.enter.native="handleQuery" />
-      </el-form-item>
-      <el-form-item label="考勤状态" prop="attendanceStatus">
-        <el-select v-model="queryParams.attendanceStatus" placeholder="全部" clearable>
-          <el-option v-for="item in attendanceStatuses" :key="item.value" :label="item.label" :value="item.value" />
-        </el-select>
-      </el-form-item>
-      <el-form-item>
-        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
-        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
-      </el-form-item>
-    </el-form>
-    <el-row :gutter="10" class="mb8">
-      <el-col :span="1.5">
-        <el-button
-          v-hasPermi="['train:attendance:export']"
-          type="warning"
-          plain
-          icon="el-icon-download"
-          size="mini"
-          @click="handleExport"
-        >导出</el-button>
-      </el-col>
-      <right-toolbar :show-search.sync="showSearch" @queryTable="getList" />
-    </el-row>
-    <el-alert title="考勤由课次签到、签退生成；具备管理权限时，可对异常或争议记录执行全留痕人工修正。" type="info" :closable="false" show-icon class="mb8" />
-    <el-table v-loading="loading" :data="rows">
-      <el-table-column label="培训计划" prop="planName" min-width="150" show-overflow-tooltip />
-      <el-table-column label="课程" prop="courseName" min-width="140" show-overflow-tooltip />
-      <el-table-column label="学员" prop="studentName" min-width="100" />
-      <el-table-column label="班牌" min-width="130" show-overflow-tooltip>
-        <template slot-scope="scope">{{ scope.row.boardName || scope.row.boardSn || "-" }}</template>
-      </el-table-column>
-      <el-table-column label="签到方式" align="center" width="100">
-        <template slot-scope="scope">{{ labelOf(checkinWays, scope.row.checkinWay) }}</template>
-      </el-table-column>
-      <el-table-column label="考勤状态" align="center" width="100">
-        <template slot-scope="scope">{{ labelOf(attendanceStatuses, scope.row.attendanceStatus) }}</template>
-      </el-table-column>
-      <el-table-column label="签到时间" prop="signInTime" width="170" />
-      <el-table-column label="签退时间" prop="signOutTime" width="170" />
-      <el-table-column label="人工修正" align="center" width="90">
-        <template slot-scope="scope">{{ scope.row.manualFlag === 1 ? "是" : "否" }}</template>
-      </el-table-column>
-      <el-table-column label="备注/调整说明" prop="remark" min-width="150" show-overflow-tooltip>
-        <template slot-scope="scope">{{ scope.row.remark || "-" }}</template>
-      </el-table-column>
-      <el-table-column label="操作" align="center" class-name="small-padding fixed-width" width="140">
-        <template slot-scope="scope">
-          <el-button
-            v-if="scope.row.signInTime && !scope.row.signOutTime"
-            v-hasPermi="['train:attendance:checkin']"
-            size="mini"
-            type="text"
-            icon="el-icon-circle-check"
-            @click="handleSignOut(scope.row)"
-          >签退</el-button>
-          <el-button
-            v-hasPermi="['train:attendance:edit']"
-            size="mini"
-            type="text"
-            icon="el-icon-edit"
-            @click="handleAdjust(scope.row)"
-          >调整</el-button>
-        </template>
-      </el-table-column>
-    </el-table>
-    <pagination
-      v-show="total > 0"
-      :total="total"
-      :page.sync="queryParams.pageNum"
-      :limit.sync="queryParams.pageSize"
-      @pagination="getList"
-    />
+    <el-tabs v-model="activeTab" type="border-card">
+      <!-- Tab 1: 课次考勤与点名签到 (UC-17 培训管理员首次签到闭环) -->
+      <el-tab-pane label="课次考勤点名 / 签到" name="roster">
+        <el-form :model="rosterQuery" size="small" :inline="true">
+          <el-form-item label="培训计划">
+            <el-select
+              v-model="rosterQuery.planId"
+              placeholder="请选择培训计划"
+              filterable
+              style="width: 280px;"
+              @change="handlePlanChange"
+            >
+              <el-option
+                v-for="item in planOptions"
+                :key="item.planId"
+                :label="item.planName"
+                :value="item.planId"
+              />
+            </el-select>
+          </el-form-item>
+          <el-form-item label="课次">
+            <el-select
+              v-model="rosterQuery.lessonId"
+              placeholder="请选择课次"
+              filterable
+              :disabled="!rosterQuery.planId"
+              :loading="lessonSelectLoading"
+              style="width: 380px;"
+              @change="handleLessonChange"
+            >
+              <el-option
+                v-for="item in lessonOptions"
+                :key="item.lessonId"
+                :label="item.label"
+                :value="item.lessonId"
+              />
+            </el-select>
+          </el-form-item>
+          <el-form-item>
+            <el-button
+              type="primary"
+              icon="el-icon-refresh"
+              size="mini"
+              :disabled="!rosterQuery.lessonId"
+              @click="loadRoster"
+            >刷新名册</el-button>
+          </el-form-item>
+        </el-form>
+
+        <el-alert
+          title="课次应到学员考勤名册：展示该课次全部应到参训人员；未签到学员可点击【签到】完成首次签到录入；已签到学员支持签退与留痕调整。"
+          type="info"
+          :closable="false"
+          show-icon
+          class="mb8"
+        />
+
+        <el-table v-loading="rosterLoading" :data="rosterList" empty-text="请选择培训计划与课次以加载应到学员名册">
+          <el-table-column label="学员姓名" prop="studentName" min-width="110" />
+          <el-table-column label="学员ID/工号" prop="studentId" min-width="120" show-overflow-tooltip />
+          <el-table-column label="性别" prop="gender" align="center" width="70" />
+          <el-table-column label="所属机构/部门" prop="deptName" min-width="140" show-overflow-tooltip />
+          <el-table-column label="联系电话" prop="phoneMasked" min-width="120" />
+          <el-table-column label="考勤状态" align="center" width="110">
+            <template slot-scope="scope">
+              <el-tag v-if="scope.row.attendanceStatus === null || scope.row.attendanceStatus === undefined" type="info" size="small">未签到</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 0" type="danger" size="small">缺勤</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 1" type="success" size="small">正常</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 2" type="warning" size="small">迟到</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 3" type="warning" size="small">早退</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 4" type="primary" size="small">请假</el-tag>
+              <span v-else>-</span>
+            </template>
+          </el-table-column>
+          <el-table-column label="签到时间" prop="signInTime" width="160">
+            <template slot-scope="scope">{{ scope.row.signInTime || "-" }}</template>
+          </el-table-column>
+          <el-table-column label="签退时间" prop="signOutTime" width="160">
+            <template slot-scope="scope">{{ scope.row.signOutTime || "-" }}</template>
+          </el-table-column>
+          <el-table-column label="签到方式" align="center" width="100">
+            <template slot-scope="scope">{{ labelOf(checkinWays, scope.row.checkinWay) }}</template>
+          </el-table-column>
+          <el-table-column label="操作" align="center" class-name="small-padding fixed-width" width="180">
+            <template slot-scope="scope">
+              <el-button
+                v-if="scope.row.canSignIn"
+                v-hasPermi="['train:attendance:checkin']"
+                size="mini"
+                type="text"
+                icon="el-icon-circle-check"
+                @click="handleRosterSignIn(scope.row)"
+              >签到</el-button>
+              <el-button
+                v-if="scope.row.canSignOut"
+                v-hasPermi="['train:attendance:checkin']"
+                size="mini"
+                type="text"
+                icon="el-icon-time"
+                @click="handleRosterSignOut(scope.row)"
+              >签退</el-button>
+              <el-button
+                v-if="scope.row.canAdjust"
+                v-hasPermi="['train:attendance:edit']"
+                size="mini"
+                type="text"
+                icon="el-icon-edit"
+                @click="handleAdjust(scope.row)"
+              >调整</el-button>
+            </template>
+          </el-table-column>
+        </el-table>
+      </el-tab-pane>
+
+      <!-- Tab 2: 考勤流水记录 (原有流水与查询视图) -->
+      <el-tab-pane label="考勤流水记录" name="history">
+        <el-form v-show="showSearch" ref="queryForm" :model="queryParams" size="small" :inline="true">
+          <el-form-item label="培训计划" prop="planName">
+            <el-input v-model="queryParams.planName" placeholder="请输入计划名称" clearable @keyup.enter.native="handleQuery" />
+          </el-form-item>
+          <el-form-item label="学员" prop="studentName">
+            <el-input v-model="queryParams.studentName" placeholder="请输入学员姓名" clearable @keyup.enter.native="handleQuery" />
+          </el-form-item>
+          <el-form-item label="课程" prop="courseName">
+            <el-input v-model="queryParams.courseName" placeholder="请输入课程名称" clearable @keyup.enter.native="handleQuery" />
+          </el-form-item>
+          <el-form-item label="考勤状态" prop="attendanceStatus">
+            <el-select v-model="queryParams.attendanceStatus" placeholder="全部" clearable>
+              <el-option v-for="item in attendanceStatuses" :key="item.value" :label="item.label" :value="item.value" />
+            </el-select>
+          </el-form-item>
+          <el-form-item>
+            <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
+            <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
+          </el-form-item>
+        </el-form>
+
+        <el-row :gutter="10" class="mb8">
+          <el-col :span="1.5">
+            <el-button
+              v-hasPermi="['train:attendance:export']"
+              type="warning"
+              plain
+              icon="el-icon-download"
+              size="mini"
+              @click="handleExport"
+            >导出</el-button>
+          </el-col>
+          <right-toolbar :show-search.sync="showSearch" @queryTable="getList" />
+        </el-row>
+
+        <el-table v-loading="loading" :data="rows">
+          <el-table-column label="培训计划" prop="planName" min-width="150" show-overflow-tooltip />
+          <el-table-column label="课程" prop="courseName" min-width="140" show-overflow-tooltip />
+          <el-table-column label="学员" prop="studentName" min-width="100" />
+          <el-table-column label="班牌" min-width="130" show-overflow-tooltip>
+            <template slot-scope="scope">{{ scope.row.boardName || scope.row.boardSn || "-" }}</template>
+          </el-table-column>
+          <el-table-column label="签到方式" align="center" width="100">
+            <template slot-scope="scope">{{ labelOf(checkinWays, scope.row.checkinWay) }}</template>
+          </el-table-column>
+          <el-table-column label="考勤状态" align="center" width="100">
+            <template slot-scope="scope">
+              <el-tag v-if="scope.row.attendanceStatus === 0" type="danger" size="small">缺勤</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 1" type="success" size="small">正常</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 2" type="warning" size="small">迟到</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 3" type="warning" size="small">早退</el-tag>
+              <el-tag v-else-if="scope.row.attendanceStatus === 4" type="primary" size="small">请假</el-tag>
+              <span v-else>-</span>
+            </template>
+          </el-table-column>
+          <el-table-column label="签到时间" prop="signInTime" width="170" />
+          <el-table-column label="签退时间" prop="signOutTime" width="170" />
+          <el-table-column label="人工修正" align="center" width="90">
+            <template slot-scope="scope">{{ scope.row.manualFlag === 1 ? "是" : "否" }}</template>
+          </el-table-column>
+          <el-table-column label="备注/调整说明" prop="remark" min-width="150" show-overflow-tooltip>
+            <template slot-scope="scope">{{ scope.row.remark || "-" }}</template>
+          </el-table-column>
+          <el-table-column label="操作" align="center" class-name="small-padding fixed-width" width="140">
+            <template slot-scope="scope">
+              <el-button
+                v-if="scope.row.signInTime && !scope.row.signOutTime"
+                v-hasPermi="['train:attendance:checkin']"
+                size="mini"
+                type="text"
+                icon="el-icon-circle-check"
+                @click="handleSignOut(scope.row)"
+              >签退</el-button>
+              <el-button
+                v-hasPermi="['train:attendance:edit']"
+                size="mini"
+                type="text"
+                icon="el-icon-edit"
+                @click="handleAdjust(scope.row)"
+              >调整</el-button>
+            </template>
+          </el-table-column>
+        </el-table>
+
+        <pagination
+          v-show="total > 0"
+          :total="total"
+          :page.sync="queryParams.pageNum"
+          :limit.sync="queryParams.pageSize"
+          @pagination="getList"
+        />
+      </el-tab-pane>
+    </el-tabs>
 
     <!-- 人工调整考勤对话框 (UC-19 / P0) -->
     <el-dialog title="人工调整考勤 (Attendance Adjustment)" :visible.sync="adjustOpen" width="520px" append-to-body>
@@ -124,12 +251,15 @@
 
 <script>
 import { listCheckin } from '@/api/train/checkin'
-import { adjustAttendance, signOutAttendance } from '@/api/train/attendance'
+import { adjustAttendance, signOutAttendance, signInAttendance, getLessonRoster } from '@/api/train/attendance'
+import { listPlan } from '@/api/train/plan'
+import { getPlanTimetable } from '@/api/train/timetable'
 
 export default {
   name: 'Checkin',
   data() {
     return {
+      activeTab: 'roster',
       loading: true,
       showSearch: true,
       total: 0,
@@ -155,10 +285,23 @@ export default {
         attendanceStatus: [
           { required: true, message: '请选择调整后的考勤状态', trigger: 'change' }
         ]
+      },
+      // 课次考勤名册 (Roster) 相关数据
+      planOptions: [],
+      lessonOptions: [],
+      lessonSelectLoading: false,
+      rosterLoading: false,
+      rosterList: [],
+      rosterQuery: {
+        planId: null,
+        lessonId: null
       }
     }
   },
-  created() { this.getList() },
+  created() {
+    this.getList()
+    this.loadPlans()
+  },
   methods: {
     getList() {
       this.loading = true
@@ -167,6 +310,104 @@ export default {
         this.total = response.total
       }).finally(() => { this.loading = false })
     },
+    loadPlans() {
+      listPlan({ pageNum: 1, pageSize: 100 }).then(response => {
+        this.planOptions = response.rows || []
+        if (this.planOptions.length > 0 && !this.rosterQuery.planId) {
+          this.rosterQuery.planId = this.planOptions[0].planId
+          this.handlePlanChange(this.rosterQuery.planId)
+        }
+      }).catch(() => {})
+    },
+    handlePlanChange(planId) {
+      this.rosterQuery.lessonId = null
+      this.rosterList = []
+      this.lessonOptions = []
+      if (!planId) return
+      this.lessonSelectLoading = true
+      getPlanTimetable(planId).then(res => {
+        const list = []
+        if (res.data && res.data.days) {
+          res.data.days.forEach(day => {
+            if (day.lessons && day.lessons.length) {
+              day.lessons.forEach(l => {
+                const timeStr = l.startTime ? l.startTime.substring(5, 16) : ''
+                const endStr = l.endTime ? l.endTime.substring(11, 16) : ''
+                list.push({
+                  lessonId: l.lessonId,
+                  courseName: l.courseName,
+                  teacherName: l.teacherName,
+                  startTime: l.startTime,
+                  endTime: l.endTime,
+                  label: `${l.courseName || '课程'} (${timeStr} ~ ${endStr}) 讲师:${l.teacherName || '-'}`
+                })
+              })
+            }
+          })
+        }
+        this.lessonOptions = list
+        if (list.length > 0) {
+          this.rosterQuery.lessonId = list[0].lessonId
+          this.loadRoster()
+        }
+      }).finally(() => {
+        this.lessonSelectLoading = false
+      })
+    },
+    handleLessonChange(lessonId) {
+      if (lessonId) {
+        this.loadRoster()
+      } else {
+        this.rosterList = []
+      }
+    },
+    loadRoster() {
+      if (!this.rosterQuery.lessonId) return
+      this.rosterLoading = true
+      getLessonRoster(this.rosterQuery.lessonId).then(res => {
+        this.rosterList = res.data || []
+      }).catch(err => {
+        const msg = (err && (err.msg || err.message)) || '获取课次考勤名册失败'
+        this.$modal.msgError(msg)
+      }).finally(() => {
+        this.rosterLoading = false
+      })
+    },
+    handleRosterSignIn(row) {
+      this.$modal.confirm(`确认对学员【${row.studentName}】执行课次首次签到？`).then(() => {
+        return signInAttendance({
+          enrollmentId: row.enrollmentId,
+          lessonId: this.rosterQuery.lessonId,
+          checkinWay: 4 // 教师/管理员代签
+        })
+      }).then(() => {
+        this.$modal.msgSuccess(`学员【${row.studentName}】签到成功`)
+        this.loadRoster()
+        this.getList()
+      }).catch(err => {
+        if (err !== 'cancel') {
+          const msg = (err && (err.msg || err.message)) || '签到操作失败'
+          this.$modal.msgError(msg)
+        }
+      })
+    },
+    handleRosterSignOut(row) {
+      this.$modal.confirm(`确认对学员【${row.studentName}】执行课次签退？`).then(() => {
+        return signOutAttendance({
+          enrollmentId: row.enrollmentId,
+          lessonId: row.lessonId || this.rosterQuery.lessonId
+        })
+      }).then(() => {
+        this.$modal.msgSuccess(`学员【${row.studentName}】签退成功`)
+        this.loadRoster()
+        this.getList()
+      }).catch(err => {
+        if (err !== 'cancel') {
+          const msg = (err && (err.msg || err.message)) || '签退操作失败'
+          this.$modal.msgError(msg)
+        }
+      })
+    },
     labelOf(options, value) {
       const match = options.find(item => item.value === value)
       return match ? match.label : '-'
@@ -210,6 +451,12 @@ export default {
           this.$modal.msgSuccess('考勤调整成功并已记录审计留痕')
           this.adjustOpen = false
           this.getList()
+          if (this.rosterQuery.lessonId) {
+            this.loadRoster()
+          }
+        }).catch(err => {
+          const msg = (err && (err.msg || err.message)) || '考勤调整失败'
+          this.$modal.msgError(msg)
         }).finally(() => {
           this.adjustSubmitting = false
         })
@@ -224,6 +471,9 @@ export default {
       }).then(() => {
         this.$modal.msgSuccess('签退成功')
         this.getList()
+        if (this.rosterQuery.lessonId) {
+          this.loadRoster()
+        }
       }).catch(() => {})
     }
   }