B4 frontend: probe task management modal on the nodes page

- ProbeTasksModal: self-loading/self-saving surface (B3 probe-meta
  pattern), tasks grouped by region label (ungrouped last), editor
  with name/region/target/interval/auto-join + agent-node multi
  select snapshotting baseNodeIds for the base-diff save; delete
  with confirm. Toolbar entry on NodeList (RadarChart icon), wired
  in NodesPage; NodeList call sites in two component tests updated
  for the new required prop.
- i18n pages.nodes.probeTasks.* (25 keys) in all 13 locales: zh-CN
  translated, en-US English, others English placeholder per repo
  convention; insertion verified pure-additive (351 insertions,
  0 deletions) and the i18n dead-key failures are byte-identical
  to the B3 baseline.
- tsc clean; oxlint 0/0 (baseline parity); oxfmt clean on touched
  files (3 pre-existing drift files untouched).

frontend/src/pages/nodes/NodeList.tsx

@@ -27,6 +27,7 @@ import {
   InfoCircleOutlined,
   MoreOutlined,
   PlusOutlined,
+  RadarChartOutlined,
   RightOutlined,
   SafetyCertificateOutlined,
   TeamOutlined,
@@ -48,6 +49,7 @@ interface NodeListProps {
   onSelectionChange: (ids: number[]) => void;
   onAdd: () => void;
   onMtls: () => void;
+  onProbeTasks: () => void;
   onEdit: (node: NodeRecord) => void;
   onDelete: (node: NodeRecord) => void;
   onProbe: (node: NodeRecord) => void;
@@ -218,6 +220,7 @@ export default function NodeList({
   onSelectionChange,
   onAdd,
   onMtls,
+  onProbeTasks,
   onEdit,
   onDelete,
   onProbe,
@@ -618,6 +621,9 @@ export default function NodeList({
         <Button icon={<SafetyCertificateOutlined />} onClick={onMtls}>
           {t('pages.nodes.mtls.title')}
         </Button>
+        <Button icon={<RadarChartOutlined />} onClick={onProbeTasks}>
+          {t('pages.nodes.probeTasks.title')}
+        </Button>
         {selectedIds.length > 0 && (
           <Button icon={<CloudDownloadOutlined />} onClick={onUpdateSelected}>
             {t('pages.nodes.updateSelected', { count: selectedIds.length })}

frontend/src/pages/nodes/NodesPage.tsx

@@ -33,6 +33,7 @@ import { useNodeMutations } from '@/api/queries/useNodeMutations';
 import AppSidebar from '@/layouts/AppSidebar';
 import NodeList from './NodeList';
 import NodeFormModal from './NodeFormModal';
+import ProbeTasksModal from './ProbeTasksModal';
 import { setMessageInstance } from '@/utils/messageBus';
 import { HttpUtil } from '@/utils';
 import type { PanelUpdateInfo } from '../index/PanelUpdateModal';
@@ -104,6 +105,7 @@ export default function NodesPage() {
   const [formNode, setFormNode] = useState<NodeRecord | null>(null);
   const [selectedIds, setSelectedIds] = useState<number[]>([]);
   const [mtlsOpen, setMtlsOpen] = useState(false);
+  const [probeTasksOpen, setProbeTasksOpen] = useState(false);
   const [trustCa, setTrustCa] = useState('');
   const [copyingCa, setCopyingCa] = useState(false);
   const [savingTrustCa, setSavingTrustCa] = useState(false);
@@ -367,6 +369,7 @@ export default function NodesPage() {
                       onSelectionChange={setSelectedIds}
                       onAdd={onAdd}
                       onMtls={() => setMtlsOpen(true)}
+                      onProbeTasks={() => setProbeTasksOpen(true)}
                       onEdit={onEdit}
                       onDelete={onDelete}
                       onProbe={onProbe}
@@ -381,6 +384,12 @@ export default function NodesPage() {
           </Layout.Content>
         </Layout>
 
+        <ProbeTasksModal
+          open={probeTasksOpen}
+          onClose={() => setProbeTasksOpen(false)}
+          nodes={nodes}
+        />
+
         <NodeFormModal
           open={formOpen}
           mode={formMode}

frontend/src/pages/nodes/ProbeTasksModal.tsx

@@ -0,0 +1,331 @@
+import { useCallback, useMemo, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import {
+  Button,
+  Input,
+  InputNumber,
+  Modal,
+  Popconfirm,
+  Select,
+  Space,
+  Switch,
+  Table,
+  Tag,
+  Typography,
+  message,
+} from 'antd';
+import { DeleteOutlined, EditOutlined, PlusOutlined } from '@ant-design/icons';
+import type { ColumnsType } from 'antd/es/table';
+import { HttpUtil } from '@/utils';
+import type { NodeRecord } from '@/api/queries/useNodesQuery';
+
+// Item 7 B4: probe (latency) task management. The operator maintains
+// the target set here — grouped by the free-form region label, no
+// preset list (user ruling Q4). Like ProbeMetaSection the surface is
+// self-contained: it loads and saves on its own through the dedicated
+// endpoints, effective immediately (the master pushes the set on each
+// agent's next config poll; nothing restarts).
+interface ProbeTaskWire {
+  id: number;
+  name: string;
+  target: string;
+  interval: number;
+  autoJoin: boolean;
+  sort: number;
+  region: string;
+  nodeIds: number[];
+}
+
+interface TaskDraft {
+  id: number; // 0 = new task
+  name: string;
+  target: string;
+  interval: number;
+  autoJoin: boolean;
+  region: string;
+  nodeIds: number[];
+  baseNodeIds: number[] | null; // editor-open snapshot (existing tasks)
+}
+
+const TASKS_URL = '/panel/api/agent/probe-tasks';
+
+export default function ProbeTasksModal({
+  open,
+  onClose,
+  nodes,
+}: {
+  open: boolean;
+  onClose: () => void;
+  nodes: NodeRecord[];
+}) {
+  const { t } = useTranslation();
+  const [messageApi, messageContextHolder] = message.useMessage();
+  const [tasks, setTasks] = useState<ProbeTaskWire[] | null>(null);
+  const [draft, setDraft] = useState<TaskDraft | null>(null);
+  const [saving, setSaving] = useState(false);
+
+  const agentNodes = useMemo(() => nodes.filter((n) => n.nodeType === 'agent'), [nodes]);
+  const nodeName = useCallback(
+    (id: number) => nodes.find((n) => n.id === id)?.name ?? `#${id}`,
+    [nodes],
+  );
+
+  const load = useCallback(async () => {
+    const msg = await HttpUtil.get<ProbeTaskWire[]>(TASKS_URL, { silent: true });
+    if (msg?.success && msg.obj) {
+      setTasks(msg.obj);
+    } else {
+      messageApi.error(msg?.msg || t('pages.nodes.probeTasks.loadFailed'));
+    }
+  }, [messageApi, t]);
+
+  // Load on open (afterOpenChange is an event callback, so resetting
+  // the previous session's state here is not an effect write).
+  const onAfterOpenChange = (opened: boolean) => {
+    if (opened) {
+      setTasks(null);
+      setDraft(null);
+      void load();
+    }
+  };
+
+  // Group by region: region labels ascending, the ungrouped bucket
+  // last; inside a group the panel order (sort) rules.
+  const groups = useMemo(() => {
+    const byRegion = new Map<string, ProbeTaskWire[]>();
+    for (const task of tasks ?? []) {
+      const key = task.region ?? '';
+      const list = byRegion.get(key) ?? [];
+      list.push(task);
+      byRegion.set(key, list);
+    }
+    return [...byRegion.entries()]
+      .sort(([a], [b]) => {
+        if (a === b) return 0;
+        if (a === '') return 1;
+        if (b === '') return -1;
+        return a < b ? -1 : 1;
+      })
+      .map(([region, list]) => ({ region, list }));
+  }, [tasks]);
+
+  const startCreate = () =>
+    setDraft({
+      id: 0,
+      name: '',
+      target: '',
+      interval: 60,
+      autoJoin: false,
+      region: '',
+      nodeIds: [],
+      baseNodeIds: null,
+    });
+
+  const startEdit = (task: ProbeTaskWire) =>
+    setDraft({
+      id: task.id,
+      name: task.name,
+      target: task.target,
+      interval: task.interval,
+      autoJoin: task.autoJoin,
+      region: task.region ?? '',
+      nodeIds: [...task.nodeIds],
+      baseNodeIds: [...task.nodeIds],
+    });
+
+  async function onSave() {
+    if (!draft) return;
+    setSaving(true);
+    try {
+      const payload: Record<string, unknown> = {
+        id: draft.id,
+        name: draft.name,
+        target: draft.target,
+        interval: draft.interval,
+        autoJoin: draft.autoJoin,
+        region: draft.region,
+        nodeIds: draft.nodeIds,
+      };
+      if (draft.baseNodeIds) payload.baseNodeIds = draft.baseNodeIds;
+      const msg = await HttpUtil.put<{ id: number }>(TASKS_URL, payload, { silent: true });
+      if (msg?.success) {
+        messageApi.success(t('pages.nodes.probeTasks.saved'));
+        setDraft(null);
+        await load();
+      } else {
+        messageApi.error(msg?.msg || t('pages.nodes.probeTasks.saveFailed'));
+      }
+    } finally {
+      setSaving(false);
+    }
+  }
+
+  async function onDelete(task: ProbeTaskWire) {
+    const msg = await HttpUtil.delete(`${TASKS_URL}/${task.id}`, { silent: true });
+    if (msg?.success) {
+      messageApi.success(t('pages.nodes.probeTasks.deleted'));
+      if (draft?.id === task.id) setDraft(null);
+      await load();
+    } else {
+      messageApi.error(msg?.msg || t('pages.nodes.probeTasks.saveFailed'));
+    }
+  }
+
+  const columns: ColumnsType<ProbeTaskWire> = [
+    { title: t('pages.nodes.probeTasks.name'), dataIndex: 'name', key: 'name' },
+    {
+      title: t('pages.nodes.probeTasks.target'),
+      dataIndex: 'target',
+      key: 'target',
+      render: (v: string) => <Typography.Text code>{v}</Typography.Text>,
+    },
+    {
+      title: t('pages.nodes.probeTasks.interval'),
+      dataIndex: 'interval',
+      key: 'interval',
+      width: 90,
+      render: (v: number) => `${v}s`,
+    },
+    {
+      title: t('pages.nodes.probeTasks.autoJoin'),
+      dataIndex: 'autoJoin',
+      key: 'autoJoin',
+      width: 90,
+      render: (v: boolean) =>
+        v ? <Tag color="blue">{t('pages.nodes.probeTasks.autoJoinOn')}</Tag> : null,
+    },
+    {
+      title: t('pages.nodes.probeTasks.nodes'),
+      dataIndex: 'nodeIds',
+      key: 'nodeIds',
+      render: (ids: number[]) => <span title={ids.map(nodeName).join(', ')}>{ids.length}</span>,
+    },
+    {
+      title: t('pages.nodes.probeTasks.actions'),
+      key: 'actions',
+      width: 110,
+      render: (_, task) => (
+        <Space size="small">
+          <Button size="small" icon={<EditOutlined />} onClick={() => startEdit(task)}>
+            {t('pages.nodes.probeTasks.edit')}
+          </Button>
+          <Popconfirm
+            title={t('pages.nodes.probeTasks.deleteConfirm')}
+            onConfirm={() => void onDelete(task)}
+            okText={t('pages.nodes.probeTasks.delete')}
+            cancelText={t('pages.nodes.probeTasks.cancel')}
+          >
+            <Button size="small" danger icon={<DeleteOutlined />} />
+          </Popconfirm>
+        </Space>
+      ),
+    },
+  ];
+
+  const setDraftField = <K extends keyof TaskDraft>(key: K, value: TaskDraft[K]) =>
+    setDraft((d) => (d ? { ...d, [key]: value } : d));
+
+  return (
+    <Modal
+      open={open}
+      title={t('pages.nodes.probeTasks.title')}
+      onCancel={onClose}
+      afterOpenChange={onAfterOpenChange}
+      footer={null}
+      width={780}
+      destroyOnHidden
+    >
+      {messageContextHolder}
+      <Typography.Paragraph type="secondary" style={{ marginTop: 0 }}>
+        {t('pages.nodes.probeTasks.intro')}
+      </Typography.Paragraph>
+
+      {tasks === null ? (
+        <Typography.Text type="secondary">{t('pages.nodes.probeTasks.loading')}</Typography.Text>
+      ) : tasks.length === 0 && !draft ? (
+        <Typography.Text type="secondary">{t('pages.nodes.probeTasks.empty')}</Typography.Text>
+      ) : (
+        groups.map(({ region, list }) => (
+          <div key={region || '__ungrouped'} style={{ marginBottom: 16 }}>
+            <Typography.Text strong>
+              {region || t('pages.nodes.probeTasks.ungrouped')}
+            </Typography.Text>
+            <Table<ProbeTaskWire>
+              size="small"
+              rowKey="id"
+              columns={columns}
+              dataSource={list}
+              pagination={false}
+              style={{ marginTop: 6 }}
+            />
+          </div>
+        ))
+      )}
+
+      {draft ? (
+        <div
+          style={{
+            borderTop: '1px solid var(--ant-color-border-secondary, #f0f0f0)',
+            paddingTop: 12,
+            marginTop: 4,
+          }}
+        >
+          <Space direction="vertical" style={{ width: '100%' }} size="middle">
+            <Space wrap>
+              <Input
+                placeholder={t('pages.nodes.probeTasks.name')}
+                value={draft.name}
+                onChange={(e) => setDraftField('name', e.target.value)}
+                style={{ width: 180 }}
+              />
+              <Input
+                placeholder={t('pages.nodes.probeTasks.region')}
+                value={draft.region}
+                onChange={(e) => setDraftField('region', e.target.value)}
+                style={{ width: 130 }}
+              />
+              <Input
+                placeholder={t('pages.nodes.probeTasks.targetPlaceholder')}
+                value={draft.target}
+                onChange={(e) => setDraftField('target', e.target.value)}
+                style={{ width: 230, fontFamily: 'monospace' }}
+              />
+              <InputNumber
+                min={5}
+                max={3600}
+                value={draft.interval}
+                onChange={(v) => setDraftField('interval', v ?? 60)}
+                addonAfter="s"
+                style={{ width: 120 }}
+              />
+            </Space>
+            <Space wrap>
+              <span>
+                {t('pages.nodes.probeTasks.autoJoin')}{' '}
+                <Switch checked={draft.autoJoin} onChange={(v) => setDraftField('autoJoin', v)} />
+              </span>
+              <Select
+                mode="multiple"
+                placeholder={t('pages.nodes.probeTasks.nodesPlaceholder')}
+                value={draft.nodeIds}
+                onChange={(v) => setDraftField('nodeIds', v)}
+                options={agentNodes.map((n) => ({ value: n.id, label: n.name }))}
+                style={{ minWidth: 260 }}
+              />
+            </Space>
+            <Space>
+              <Button type="primary" loading={saving} onClick={() => void onSave()}>
+                {t('pages.nodes.probeTasks.save')}
+              </Button>
+              <Button onClick={() => setDraft(null)}>{t('pages.nodes.probeTasks.cancel')}</Button>
+            </Space>
+          </Space>
+        </div>
+      ) : (
+        <Button icon={<PlusOutlined />} onClick={startCreate} style={{ marginTop: 8 }}>
+          {t('pages.nodes.probeTasks.add')}
+        </Button>
+      )}
+    </Modal>
+  );
+}

frontend/src/test/node-list-category-chips.test.tsx

@@ -17,6 +17,7 @@ function renderNodes(nodes: NodeRecord[]) {
       onSelectionChange={noop}
       onAdd={noop}
       onMtls={noop}
+      onProbeTasks={noop}
       onEdit={noop}
       onDelete={noop}
       onProbe={noop}

frontend/src/test/node-list-rowkey.test.tsx

@@ -29,6 +29,7 @@ describe('NodeList desktop table row keys', () => {
         onSelectionChange={noop}
         onAdd={noop}
         onMtls={noop}
+        onProbeTasks={noop}
         onEdit={noop}
         onDelete={noop}
         onProbe={noop}

internal/web/translation/ar-EG.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/en-US.json

@@ -1099,6 +1099,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/es-ES.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/fa-IR.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/id-ID.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/ja-JP.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/pt-BR.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/ru-RU.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/tr-TR.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/uk-UA.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/vi-VN.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {

internal/web/translation/zh-CN.json

@@ -981,6 +981,33 @@
         "save": "保存状态页信息",
         "saved": "状态页信息已保存",
         "saveFailed": "状态页信息保存失败"
+      },
+      "probeTasks": {
+        "title": "延迟探测",
+        "intro": "由 agent 节点执行的 TCP 延迟探测。修改在各 agent 下一次拉取配置时生效（约 30 秒），无需重启。",
+        "loading": "加载中…",
+        "empty": "还没有探测任务，新增一个开始测延迟。",
+        "add": "新增探测",
+        "name": "名称",
+        "target": "目标",
+        "targetPlaceholder": "主机:端口，如 1.1.1.1:443",
+        "interval": "间隔（秒）",
+        "region": "地区",
+        "ungrouped": "未分组",
+        "autoJoin": "自动加入",
+        "autoJoinOn": "自动",
+        "nodes": "指派节点",
+        "nodesPlaceholder": "选择节点",
+        "actions": "操作",
+        "edit": "编辑",
+        "delete": "删除",
+        "deleteConfirm": "删除这个探测及其历史数据？",
+        "save": "保存",
+        "cancel": "取消",
+        "saved": "探测任务已保存",
+        "deleted": "探测任务已删除",
+        "loadFailed": "探测任务加载失败",
+        "saveFailed": "操作失败"
       }
     },
     "settings": {

internal/web/translation/zh-TW.json

@@ -959,6 +959,33 @@
         "save": "Save status page info",
         "saved": "Status page info saved",
         "saveFailed": "Saving status page info failed"
+      },
+      "probeTasks": {
+        "title": "Probe tasks",
+        "intro": "TCP latency probes run by agent nodes. Changes apply on each agent's next config poll (about 30 s); nothing restarts.",
+        "loading": "Loading…",
+        "empty": "No probe tasks yet. Add one to start measuring latency.",
+        "add": "Add probe",
+        "name": "Name",
+        "target": "Target",
+        "targetPlaceholder": "host:port, e.g. 1.1.1.1:443",
+        "interval": "Interval (s)",
+        "region": "Region",
+        "ungrouped": "Ungrouped",
+        "autoJoin": "Auto-join",
+        "autoJoinOn": "Auto",
+        "nodes": "Nodes",
+        "nodesPlaceholder": "Assign nodes",
+        "actions": "Actions",
+        "edit": "Edit",
+        "delete": "Delete",
+        "deleteConfirm": "Delete this probe and its history?",
+        "save": "Save",
+        "cancel": "Cancel",
+        "saved": "Probe task saved",
+        "deleted": "Probe task deleted",
+        "loadFailed": "Failed to load probe tasks",
+        "saveFailed": "Operation failed"
       }
     },
     "settings": {