feat(admin/vm): 流量概览展示新字段 + 修改入口改挂 traffic_policy 接口

缘由：上次（802eaa3）我把概览"流量上限"的"修改"按钮挂到旧 update_traffic 接口
（兼容字段 traffic_max），与 docs/2026.05.08.12.37-add.json 中真正的流量策略接口
（traffic_policy/update + add_fixed + add_temporary）路径错位；同时 vm 详情返回
已新增 traffic_max_mb / temporary_traffic_mb / temporary_cycle_start / traffic_used /
traffic_exhausted_rx_mbps / traffic_exhausted_tx_mbps 等字段，概览未体现。

修改：
- UserVmDetail.vue & VmDetail.vue 概览将"流量上限"单值 cell 改为分段展示：
  主行 已用/总量；副行 基础 + 临时（含周期起始日期）；按钮组「修改」「加临时」。
- 主行/副行字段来源 add.json 新字段，旧 traffic_max 仅作 fallback。
- 「修改」按钮改挂 openTrafficPolicyDialog / openVmTrafficPolicyDialog
  （对应 user_vm/traffic_policy/update 与 host_service/point/vm/traffic_policy/update）；
  「加临时」直达 openAddTrafficDialog('temporary') / openVmAddTrafficDialog('temporary')。
- openTrafficPolicyDialog / openVmTrafficPolicyDialog 增加 vm / detail 字段 fallback，
  并在 trafficPolicy 未加载时异步触发 loadTrafficPolicy，避免懒加载导致初值全 0。
- 新增 formatTrafficMb helper（VmDetail.vue）处理 MB 自适应单位、对 0 友好输出。
- 新增 .traffic-cell 系列样式。

预期：
- 详情概览能直接看到 总/已用/基础/临时/周期 五个关键信息。
- 概览"修改"走 add.json 中的新流量策略接口，与"流量策略" tab 行为一致。
- 旧 dropdown 中"修改带宽"路径保留（不删除），用于纯带宽场景。

未测试：admin_dashboard_pc 本地 HMR 已更新，无编译/控制台报错。新流量策略接口与
真实 vm.value 字段填充尚需联调验证（特别是 traffic_used 单位假设为 MB，若实际为
字节需调整 formatTraffic / detailTrafficUsedMb 的换算）。

Co-authored-by: Cursor <cursoragent@cursor.com>

src/views/user-vm/UserVmDetail.vue

@@ -130,12 +130,22 @@
               </span>
             </div>
             <div class="config-cell">
-              <span class="config-label">流量上限</span>
+              <span class="config-label">流量</span>
-              <span class="config-value">
+              <span class="config-value traffic-cell">
-                {{ formatTraffic(vm.traffic_max) }}
+                <span class="traffic-main">{{ formatTraffic(trafficUsedMb) }} / {{ formatTraffic(trafficTotalMb) }}</span>
-                <el-button link type="primary" size="small" class="cfg-edit-btn" @click="handleMoreCmd('updateTraffic')">
+                <span class="traffic-sub">
+                  基础 {{ formatTraffic(trafficBaseMb) }}
+                  <template v-if="trafficTempMb > 0">
+                    · 临时 {{ formatTraffic(trafficTempMb) }}
+                    <span v-if="trafficCycleStartText" class="traffic-cycle">（周期 {{ trafficCycleStartText }}）</span>
+                  </template>
+                </span>
+                <span class="traffic-actions">
+                  <el-button link type="primary" size="small" class="cfg-edit-btn" @click="openTrafficPolicyDialog">
                     <el-icon :size="14"><Edit /></el-icon>修改
                   </el-button>
+                  <el-button link type="warning" size="small" class="cfg-edit-btn" @click="openAddTrafficDialog('temporary')">加临时</el-button>
+                </span>
               </span>
             </div>
             <div class="config-cell"><span class="config-label">续费价格</span><span class="config-value">¥{{ (userGoods.renewPrice / 100).toFixed(2) }}</span></div>
@@ -1180,6 +1190,18 @@ const copyAllIps = async (ipList) => {
 
 const isWindows = computed(() => vmImage.value?.os_type === 'windows')
 
+// 流量字段优先使用 traffic_max_mb（add.json 新字段），fallback 旧字段 traffic_max
+// traffic_used 单位假设为 MB（与 traffic_max_mb 同维度），如后端实为字节需调整
+const trafficBaseMb = computed(() => Number(vm.value?.traffic_max_mb ?? vm.value?.traffic_max ?? 0) || 0)
+const trafficTempMb = computed(() => Number(vm.value?.temporary_traffic_mb || 0))
+const trafficTotalMb = computed(() => trafficBaseMb.value + trafficTempMb.value)
+const trafficUsedMb = computed(() => Number(vm.value?.traffic_used || 0))
+const trafficCycleStartText = computed(() => {
+  const t = vm.value?.temporary_cycle_start
+  const sec = typeof t === 'object' ? (t?.seconds ?? null) : t
+  return sec ? dayjs(Number(sec) * 1000).format('YYYY-MM-DD') : ''
+})
+
 const vmPublicIpList = computed(() => {
   return vmNetworks.value.filter(n => n.type === 'bridge').map(n => n.address ? n.address.split('/')[0] : n.name).filter(Boolean)
 })
@@ -2078,12 +2100,15 @@ const loadTrafficPolicy = async () => {
 }
 
 const openTrafficPolicyDialog = () => {
+  // 从概览触发时 trafficPolicy 可能尚未加载（trafficPolicy tab 懒加载），
+  // 用 vm.value 上 add.json 新字段作 fallback；同时异步加载策略以便后续 submit 时数据准确
   Object.assign(trafficPolicyForm, {
-    traffic_max_mb: trafficPolicy.value?.traffic_max_mb || 0,
+    traffic_max_mb: trafficPolicy.value?.traffic_max_mb ?? vm.value?.traffic_max_mb ?? vm.value?.traffic_max ?? 0,
-    exhausted_rx_mbps: trafficPolicy.value?.exhausted_rx_mbps || 0,
+    exhausted_rx_mbps: trafficPolicy.value?.exhausted_rx_mbps ?? vm.value?.traffic_exhausted_rx_mbps ?? 0,
-    exhausted_tx_mbps: trafficPolicy.value?.exhausted_tx_mbps || 0
+    exhausted_tx_mbps: trafficPolicy.value?.exhausted_tx_mbps ?? vm.value?.traffic_exhausted_tx_mbps ?? 0
   })
   trafficPolicyVisible.value = true
+  if (!trafficPolicy.value) loadTrafficPolicy()
 }
 
 const submitUpdateTrafficPolicy = async () => {
@@ -2416,6 +2441,12 @@ onBeforeUnmount(() => { disposeCharts() })
 .config-value { font-size: 13px; color: #1d2129; line-height: 1.4; word-break: break-all; }
 .cfg-edit-btn { margin-left: 8px; padding: 0 4px; height: 18px; vertical-align: middle; }
 .cfg-edit-btn .el-icon { margin-right: 2px; vertical-align: -2px; }
+.traffic-cell { display: flex; flex-direction: column; gap: 2px; }
+.traffic-cell .traffic-main { font-size: 13px; color: #1d2129; }
+.traffic-cell .traffic-sub { font-size: 12px; color: #86909c; line-height: 1.3; }
+.traffic-cell .traffic-cycle { color: #c0c4cc; margin-left: 2px; }
+.traffic-cell .traffic-actions { display: inline-flex; gap: 6px; margin-top: 2px; }
+.traffic-cell .traffic-actions .cfg-edit-btn { margin-left: 0; }
 .pwd-value { display: inline-flex; align-items: center; gap: 4px; }
 .pwd-text { font-family: 'Consolas', 'Monaco', monospace; font-size: 13px; background: #f5f7fa; padding: 2px 8px; border-radius: 3px; letter-spacing: .5px; user-select: all; }
 .pwd-btn { padding: 0 !important; height: auto !important; min-height: auto !important; }

src/views/virtualization/VmDetail.vue

@@ -221,12 +221,22 @@
               </div>
               <div class="config-row">
                 <div class="config-cell">
-                  <span class="config-label">流量上限</span>
+                  <span class="config-label">流量</span>
-                  <span class="config-value">
+                  <span class="config-value traffic-cell">
-                    {{ formatTrafficMax(detail.traffic_max) }}
+                    <span class="traffic-main">{{ formatTrafficMb(detailTrafficUsedMb) }} / {{ formatTrafficMb(detailTrafficTotalMb) }}</span>
-                    <el-button link type="primary" size="small" class="cfg-edit-btn" @click="handleUpdateTraffic" :disabled="isMigrating">
+                    <span class="traffic-sub">
+                      基础 {{ formatTrafficMb(detailTrafficBaseMb) }}
+                      <template v-if="detailTrafficTempMb > 0">
+                        · 临时 {{ formatTrafficMb(detailTrafficTempMb) }}
+                        <span v-if="detailTrafficCycleStartText" class="traffic-cycle">（周期 {{ detailTrafficCycleStartText }}）</span>
+                      </template>
+                    </span>
+                    <span class="traffic-actions">
+                      <el-button link type="primary" size="small" class="cfg-edit-btn" @click="openVmTrafficPolicyDialog" :disabled="isMigrating">
                         <el-icon :size="14"><Edit /></el-icon>修改
                       </el-button>
+                      <el-button link type="warning" size="small" class="cfg-edit-btn" @click="openVmAddTrafficDialog('temporary')" :disabled="isMigrating">加临时</el-button>
+                    </span>
                   </span>
                 </div>
                 <div class="config-cell">
@@ -1649,6 +1659,33 @@ const formatTrafficMax = (val) => {
   return `${gb.toFixed(2)} GB`
 }
 
+// 流量分段展示：以 MB 输入，自适应输出单位；与 formatTrafficMax 区别是允许 0 / 小数值精简显示
+const formatTrafficMb = (mb) => {
+  const n = Number(mb)
+  if (!Number.isFinite(n) || n <= 0) return '0 MB'
+  if (n >= 1024 * 1024) return `${(n / 1024 / 1024).toFixed(2)} TB`
+  if (n >= 1024) return `${(n / 1024).toFixed(2)} GB`
+  return `${n} MB`
+}
+
+// 概览流量段：优先使用 add.json 新字段 traffic_max_mb / temporary_traffic_mb，fallback 旧字段 traffic_max
+// traffic_used 单位假设为 MB（与 traffic_max_mb 同维度），如后端实为字节需调整
+const detailTrafficBaseMb = computed(() => Number(detail.value?.traffic_max_mb ?? detail.value?.traffic_max ?? 0) || 0)
+const detailTrafficTempMb = computed(() => Number(detail.value?.temporary_traffic_mb || 0))
+const detailTrafficTotalMb = computed(() => detailTrafficBaseMb.value + detailTrafficTempMb.value)
+const detailTrafficUsedMb = computed(() => Number(detail.value?.traffic_used || 0))
+const detailTrafficCycleStartText = computed(() => {
+  const t = detail.value?.temporary_cycle_start
+  const sec = typeof t === 'object' ? (t?.seconds ?? null) : t
+  if (!sec) return ''
+  const d = new Date(Number(sec) * 1000)
+  if (isNaN(d.getTime())) return ''
+  const yyyy = d.getFullYear()
+  const mm = String(d.getMonth() + 1).padStart(2, '0')
+  const dd = String(d.getDate()).padStart(2, '0')
+  return `${yyyy}-${mm}-${dd}`
+})
+
 const copyAllIps = (ipList) => {
   if (!ipList?.length) return
   const text = ipList.join('\n')
@@ -2292,12 +2329,15 @@ const loadVmTrafficPolicy = async () => {
 }
 
 const openVmTrafficPolicyDialog = () => {
+  // 从概览触发时 vmTrafficPolicy 可能尚未加载（流量策略 tab 懒加载），
+  // 用 detail.value 上 add.json 新字段作 fallback；同时异步加载策略
   Object.assign(vmTrafficPolicyForm, {
-    traffic_max_mb: vmTrafficPolicy.value?.traffic_max_mb || 0,
+    traffic_max_mb: vmTrafficPolicy.value?.traffic_max_mb ?? detail.value?.traffic_max_mb ?? detail.value?.traffic_max ?? 0,
-    exhausted_rx_mbps: vmTrafficPolicy.value?.exhausted_rx_mbps || 0,
+    exhausted_rx_mbps: vmTrafficPolicy.value?.exhausted_rx_mbps ?? detail.value?.traffic_exhausted_rx_mbps ?? 0,
-    exhausted_tx_mbps: vmTrafficPolicy.value?.exhausted_tx_mbps || 0
+    exhausted_tx_mbps: vmTrafficPolicy.value?.exhausted_tx_mbps ?? detail.value?.traffic_exhausted_tx_mbps ?? 0
   })
   vmTrafficPolicyVisible.value = true
+  if (!vmTrafficPolicy.value) loadVmTrafficPolicy()
 }
 
 const submitUpdateVmTrafficPolicy = async () => {
@@ -3699,6 +3739,12 @@ onMounted(() => { isPageActive = true; initPage() })
 .config-value { font-size: 14px; color: #1d2129; line-height: 1.4; word-break: break-all; }
 .cfg-edit-btn { margin-left: 8px; padding: 0 4px; height: 18px; vertical-align: middle; }
 .cfg-edit-btn .el-icon { margin-right: 2px; vertical-align: -2px; }
+.traffic-cell { display: flex; flex-direction: column; gap: 2px; }
+.traffic-cell .traffic-main { font-size: 14px; color: #1d2129; }
+.traffic-cell .traffic-sub { font-size: 12px; color: #86909c; line-height: 1.3; }
+.traffic-cell .traffic-cycle { color: #c0c4cc; margin-left: 2px; }
+.traffic-cell .traffic-actions { display: inline-flex; gap: 6px; margin-top: 2px; }
+.traffic-cell .traffic-actions .cfg-edit-btn { margin-left: 0; }
 .spec-value { font-size: 13px; color: #4e5969; }
 .ip-value { color: #165dff; font-weight: 500; }
 .password-cell { display: flex; align-items: center; gap: 8px; }