diff --git a/docs/superpowers/specs/2026-04-22-disk-monitor-design.md b/docs/superpowers/specs/2026-04-22-disk-monitor-design.md
index 493cc00..508a532 100644
--- a/docs/superpowers/specs/2026-04-22-disk-monitor-design.md
+++ b/docs/superpowers/specs/2026-04-22-disk-monitor-design.md
@@ -721,10 +721,14 @@ CREATE TABLE IF NOT EXISTS `disk_monitor_notify_log` (
 ```json
 {
   "pageNum": 1,
-  "pageSize": 10
+  "pageSize": 100,
+  "sortField": "startedAt",
+  "sortOrder": "desc"
 }
 ```
 
+说明：该接口默认用于“最近任务”区域，后端应按 `startedAt desc` 返回最近记录，前端再截取前 10 条进行展示。
+
 ### 列表字段
 
 - `jobId`
diff --git a/frontend/src/api/system/diskMonitor/interface/index.ts b/frontend/src/api/system/diskMonitor/interface/index.ts
index 2a85450..0d27871 100644
--- a/frontend/src/api/system/diskMonitor/interface/index.ts
+++ b/frontend/src/api/system/diskMonitor/interface/index.ts
@@ -71,7 +71,10 @@ export namespace DiskMonitor {
         jobNo: string
     }
 
-    export interface JobListParams extends ReqPage {}
+    export interface JobListParams extends ReqPage {
+        sortField?: 'startedAt'
+        sortOrder?: 'asc' | 'desc'
+    }
 
     export interface JobListItem {
         id: number
diff --git a/frontend/src/views/systemMonitor/diskMonitor/components/DiskMonitorTargetDialog.vue b/frontend/src/views/systemMonitor/diskMonitor/components/DiskMonitorTargetDialog.vue
index 877fecf..1735f72 100644
--- a/frontend/src/views/systemMonitor/diskMonitor/components/DiskMonitorTargetDialog.vue
+++ b/frontend/src/views/systemMonitor/diskMonitor/components/DiskMonitorTargetDialog.vue
@@ -5,7 +5,7 @@
                 <el-input
                     :model-value="props.modelValue.driveLetter"
                     placeholder="例如 C:"
-                    maxlength="10"
+                    maxlength="2"
                     @update:model-value="value => patchTarget({ driveLetter: String(value).trim().toUpperCase() })"
                 />
             </el-form-item>
diff --git a/frontend/src/views/systemMonitor/diskMonitor/components/DiskMonitorTargetTable.vue b/frontend/src/views/systemMonitor/diskMonitor/components/DiskMonitorTargetTable.vue
index c5658ba..8eab772 100644
--- a/frontend/src/views/systemMonitor/diskMonitor/components/DiskMonitorTargetTable.vue
+++ b/frontend/src/views/systemMonitor/diskMonitor/components/DiskMonitorTargetTable.vue
@@ -5,10 +5,10 @@
                 <h3 class="table-title">监控目标</h3>
                 <p class="table-description">维护需要监控的盘符与通知目标</p>
             </div>
-            <el-button type="primary" @click="emit('add')">新增目标</el-button>
+            <el-button type="primary" :disabled="props.disabled" @click="emit('add')">新增目标</el-button>
         </div>
 
-        <el-table :data="rows" border stripe>
+        <el-table :data="props.rows" border stripe>
             <el-table-column prop="driveLetter" label="盘符" min-width="90" />
             <el-table-column label="是否监控" min-width="100">
                 <template #default="{ row }">
@@ -44,8 +44,12 @@
             </el-table-column>
             <el-table-column label="操作" width="140" fixed="right">
                 <template #default="{ row, $index }">
-                    <el-button link type="primary" @click="emit('edit', row, $index)">编辑</el-button>
-                    <el-button link type="danger" @click="emit('remove', $index)">删除</el-button>
+                    <el-button link type="primary" :disabled="props.disabled" @click="emit('edit', row, $index)">
+                        编辑
+                    </el-button>
+                    <el-button link type="danger" :disabled="props.disabled" @click="emit('remove', $index)">
+                        删除
+                    </el-button>
                 </template>
             </el-table-column>
         </el-table>
@@ -60,9 +64,15 @@ defineOptions({
     name: 'DiskMonitorTargetTable'
 })
 
-defineProps<{
-    rows: DiskMonitor.TargetItem[]
-}>()
+const props = withDefaults(
+    defineProps<{
+        rows: DiskMonitor.TargetItem[]
+        disabled?: boolean
+    }>(),
+    {
+        disabled: false
+    }
+)
 
 const emit = defineEmits<{
     add: []
diff --git a/frontend/src/views/systemMonitor/diskMonitor/components/NotificationHttpEditor.vue b/frontend/src/views/systemMonitor/diskMonitor/components/NotificationHttpEditor.vue
index 07f6eff..67ba075 100644
--- a/frontend/src/views/systemMonitor/diskMonitor/components/NotificationHttpEditor.vue
+++ b/frontend/src/views/systemMonitor/diskMonitor/components/NotificationHttpEditor.vue
@@ -69,7 +69,8 @@ const handleRemove = (index: number) => {
 }
 
 const handleTimeoutChange = (index: number, value: number | undefined) => {
-    patchRow(index, 'timeoutMs', Number(value || 0))
+    const nextTimeout = typeof value === 'number' && value >= 100 ? value : 100
+    patchRow(index, 'timeoutMs', nextTimeout)
 }
 
 const patchRow = <K extends keyof DiskMonitor.NotifyHttpTarget>(
diff --git a/frontend/src/views/systemMonitor/diskMonitor/index.vue b/frontend/src/views/systemMonitor/diskMonitor/index.vue
index 98c1ae7..29fe4e4 100644
--- a/frontend/src/views/systemMonitor/diskMonitor/index.vue
+++ b/frontend/src/views/systemMonitor/diskMonitor/index.vue
@@ -19,7 +19,13 @@
             @run="handleRun"
         />
 
-        <DiskMonitorTargetTable :rows="targetList" @add="openAddTarget" @edit="openEditTarget" @remove="removeTarget" />
+        <DiskMonitorTargetTable
+            :rows="targetList"
+            :disabled="formBusy"
+            @add="openAddTarget"
+            @edit="openEditTarget"
+            @remove="removeTarget"
+        />
 
         <DiskMonitorTargetDialog
             v-model:visible="targetDialogVisible"
@@ -62,6 +68,7 @@ import {
     normalizeTargetItem,
     validatePolicy,
     validateTarget,
+    validateTargetList,
     validateTargetNotifications
 } from './utils/form'
 
@@ -167,15 +174,18 @@ const loadJobList = async () => {
         // 统一拉取最近任务列表，并按 startedAt 倒序确保摘要展示真实最新任务
         const response = await getDiskMonitorJobList({
             pageNum: 1,
-            pageSize: 10
+            pageSize: 100,
+            sortField: 'startedAt',
+            sortOrder: 'desc'
         })
         const records = [...(response.data?.records || [])].sort((a, b) => {
             const first = new Date(a.startedAt).getTime()
             const second = new Date(b.startedAt).getTime()
             return second - first
         })
-        jobList.value = records
-        latestJob.value = records[0] || null
+        // 前端保留 startedAt 的兜底排序，同时通过显式排序参数要求后端返回真正的最新任务。
+        jobList.value = records.slice(0, 10)
+        latestJob.value = jobList.value[0] || null
     } finally {
         loading.jobs = false
     }
@@ -229,11 +239,23 @@ const handleSave = async () => {
         return
     }
 
+    const normalizedTargets = targetList.value.map(item => ({
+        ...normalizeTargetItem(item),
+        driveLetter: item.driveLetter.trim().toUpperCase()
+    }))
+    const targetListErrorMessage = validateTargetList(normalizedTargets)
+    if (targetListErrorMessage) {
+        ElMessage.warning(targetListErrorMessage)
+        return
+    }
+
     loading.save = true
     try {
+        // 整页保存前再次规范化所有盘符配置，避免历史脏数据绕过弹窗校验链路。
+        targetList.value = normalizedTargets
         await saveDiskMonitorPolicy({
             policy: policyForm.value,
-            targets: targetList.value
+            targets: normalizedTargets
         })
         ElMessage.success('配置保存成功')
         // 保存完成后重新拉取数据，避免本地状态与服务端策略偏差
diff --git a/frontend/src/views/systemMonitor/diskMonitor/utils/form.ts b/frontend/src/views/systemMonitor/diskMonitor/utils/form.ts
index 698eb49..c135cfd 100644
--- a/frontend/src/views/systemMonitor/diskMonitor/utils/form.ts
+++ b/frontend/src/views/systemMonitor/diskMonitor/utils/form.ts
@@ -1,5 +1,7 @@
 import type { DiskMonitor } from '@/api/system/diskMonitor/interface'
 
+const DRIVE_LETTER_PATTERN = /^[A-Z]:$/
+
 export const createDefaultPolicy = (): DiskMonitor.PolicyItem => ({
     policyName: '默认磁盘监控策略',
     monitorEnabled: true,
@@ -46,6 +48,7 @@ export const validatePolicy = (policy: DiskMonitor.PolicyItem) => {
 
 export const validateTarget = (target: DiskMonitor.TargetItem, exists: string[]) => {
     if (!target.driveLetter) return '盘符不能为空'
+    if (!DRIVE_LETTER_PATTERN.test(target.driveLetter)) return '盘符格式必须为类似 C: 的单个盘符'
     if (exists.includes(target.driveLetter)) return '盘符不能重复'
     if (target.warningUsagePercent < 1 || target.warningUsagePercent > 100) return '预警使用率必须在 1-100 之间'
     if (target.alarmUsagePercent < 1 || target.alarmUsagePercent > 100) return '告警使用率必须在 1-100 之间'
@@ -55,16 +58,54 @@ export const validateTarget = (target: DiskMonitor.TargetItem, exists: string[])
 
 export const validateTargetNotifications = (target: DiskMonitor.TargetItem) => {
     if (target.notifyPathEnabled) {
-        const hasInvalidPath = (target.notifyPathList || []).some(item => !item.path?.trim())
+        const enabledPathTargets = (target.notifyPathList || []).filter(item => item.enabled)
+        if (!enabledPathTargets.length) return '路径通知至少需要一个启用的通知目标'
+
+        const hasInvalidPath = enabledPathTargets.some(item => !item.path?.trim())
         if (hasInvalidPath) return '路径通知目标路径不能为空'
     }
 
     if (target.notifyHttpEnabled) {
-        const hasInvalidUrl = (target.notifyHttpList || []).some(item => {
+        const enabledHttpTargets = (target.notifyHttpList || []).filter(item => item.enabled)
+        if (!enabledHttpTargets.length) return 'HTTP 通知至少需要一个启用的通知目标'
+
+        const hasInvalidUrl = enabledHttpTargets.some(item => {
             const url = item.url?.trim()
             return !url || !/^https?:\/\/\S+$/i.test(url)
         })
         if (hasInvalidUrl) return 'HTTP 通知目标 URL 需要为有效的 HTTP/HTTPS 地址'
+
+        const hasInvalidTimeout = enabledHttpTargets.some(
+            item => !Number.isFinite(item.timeoutMs) || item.timeoutMs < 100
+        )
+        if (hasInvalidTimeout) return 'HTTP 通知超时时间不能小于 100 毫秒'
+    }
+
+    return ''
+}
+
+export const validateTargetList = (targets: DiskMonitor.TargetItem[]) => {
+    for (let index = 0; index < targets.length; index += 1) {
+        const target = targets[index]
+        const normalizedTarget: DiskMonitor.TargetItem = {
+            ...normalizeTargetItem(target),
+            driveLetter: target.driveLetter.trim().toUpperCase()
+        }
+        const exists = targets
+            .filter((_, targetIndex) => targetIndex !== index)
+            .map(item => item.driveLetter.trim().toUpperCase())
+
+        const targetErrorMessage = validateTarget(normalizedTarget, exists)
+        if (targetErrorMessage) {
+            const label = normalizedTarget.driveLetter || `第 ${index + 1} 个监控目标`
+            return `${label}：${targetErrorMessage}`
+        }
+
+        const notifyErrorMessage = validateTargetNotifications(normalizedTarget)
+        if (notifyErrorMessage) {
+            const label = normalizedTarget.driveLetter || `第 ${index + 1} 个监控目标`
+            return `${label}：${notifyErrorMessage}`
+        }
     }
 
     return ''
diff --git a/frontend/src/views/systemMonitor/index.vue b/frontend/src/views/systemMonitor/index.vue
index a3d24a7..e5975a6 100644
--- a/frontend/src/views/systemMonitor/index.vue
+++ b/frontend/src/views/systemMonitor/index.vue
@@ -1,9 +1,99 @@
 <template>
-    <div>系统监控页面占位</div>
+    <div class="system-monitor-page">
+        <div class="page-header">
+            <h2 class="page-title">系统监控</h2>
+            <p class="page-description">从这里进入各类运行监控能力，目前已接入磁盘监控配置入口。</p>
+        </div>
+
+        <div class="monitor-grid">
+            <section class="monitor-card">
+                <div class="card-content">
+                    <h3 class="card-title">磁盘监控</h3>
+                    <p class="card-description">
+                        配置多盘符监控、预警与告警阈值、启动监控、定时监控以及通知目标。
+                    </p>
+                </div>
+                <el-button type="primary" @click="openDiskMonitor">进入配置</el-button>
+            </section>
+        </div>
+    </div>
 </template>
 
 <script setup lang="ts">
+import { useRouter } from 'vue-router'
+
 defineOptions({
     name: 'SystemMonitorPage'
 })
+
+const router = useRouter()
+
+const openDiskMonitor = async () => {
+    // 系统监控页作为模块入口，保持磁盘监控返回链路闭环。
+    await router.push('/systemMonitor/diskMonitor')
+}
 </script>
+
+<style scoped lang="scss">
+.system-monitor-page {
+    display: flex;
+    flex-direction: column;
+    gap: 16px;
+    padding: 20px;
+}
+
+.page-header {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+}
+
+.page-title {
+    margin: 0;
+    font-size: 22px;
+    color: #111827;
+}
+
+.page-description {
+    margin: 0;
+    font-size: 13px;
+    color: #6b7280;
+}
+
+.monitor-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
+    gap: 16px;
+}
+
+.monitor-card {
+    display: flex;
+    flex-direction: column;
+    justify-content: space-between;
+    gap: 16px;
+    min-height: 180px;
+    padding: 20px;
+    border: 1px solid #e5e7eb;
+    border-radius: 12px;
+    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
+}
+
+.card-content {
+    display: flex;
+    flex-direction: column;
+    gap: 10px;
+}
+
+.card-title {
+    margin: 0;
+    font-size: 18px;
+    color: #111827;
+}
+
+.card-description {
+    margin: 0;
+    font-size: 13px;
+    line-height: 1.7;
+    color: #4b5563;
+}
+</style>