diff --git a/frontend/app/javascript/dashboard/components-next/message/bubbles/Activity.vue b/frontend/app/javascript/dashboard/components-next/message/bubbles/Activity.vue
index 9126cad7..f95dd14d 100644
--- a/frontend/app/javascript/dashboard/components-next/message/bubbles/Activity.vue
+++ b/frontend/app/javascript/dashboard/components-next/message/bubbles/Activity.vue
@@ -6,49 +6,234 @@ import { messageTimestamp } from 'shared/helpers/timeHelper';
 import BaseBubble from './Base.vue';
 import { useMessageContext } from '../provider.js';
 
-const { content, createdAt } = useMessageContext();
+const { content, contentAttributes, createdAt } = useMessageContext();
 
 const { locale, t } = useI18n();
 
+// Mirrors Chatwoot v4.14 conversations.activity. Unknown/custom activity types
+// and the unreachable upstream sla.updated branch intentionally use content.
+const ACTIVITY_KEYS = {
+  'status.resolved': 'STATUS_RESOLVED',
+  'status.contact_resolved': 'RESOLVED_BY',
+  'status.open': 'STATUS_OPEN',
+  'status.pending': 'STATUS_PENDING',
+  'status.snoozed': 'STATUS_SNOOZED',
+  'status.auto_resolved_days': 'STATUS_AUTO_RESOLVED_DAYS',
+  'status.auto_resolved_hours': 'STATUS_AUTO_RESOLVED_HOURS',
+  'status.auto_resolved_minutes': 'STATUS_AUTO_RESOLVED_MINUTES',
+  'status.system_auto_open': 'STATUS_SYSTEM_AUTO_OPEN',
+  'priority.added': 'PRIORITY_ADDED',
+  'priority.updated': 'PRIORITY_UPDATED',
+  'priority.removed': 'PRIORITY_REMOVED',
+  'assignee.self_assigned': 'ASSIGNEE_SELF_ASSIGNED',
+  'assignee.assigned': 'ASSIGNEE_ASSIGNED',
+  'assignee.removed': 'ASSIGNEE_REMOVED',
+  'team.assigned': 'TEAM_ASSIGNED',
+  'team.assigned_with_assignee': 'TEAM_ASSIGNED_WITH_ASSIGNEE',
+  'team.removed': 'TEAM_REMOVED',
+  'labels.added': 'LABELS_ADDED',
+  'labels.removed': 'LABELS_REMOVED',
+  'sla.added': 'SLA_ADDED',
+  'sla.removed': 'SLA_REMOVED',
+  muted: 'MUTED',
+  unmuted: 'UNMUTED',
+  'captain.resolved': 'CAPTAIN_RESOLVED',
+  'captain.resolved_with_reason': 'CAPTAIN_RESOLVED_WITH_REASON',
+  'captain.resolved_by_tool': 'CAPTAIN_RESOLVED_BY_TOOL',
+  'captain.open': 'CAPTAIN_OPEN',
+  'captain.open_with_reason': 'CAPTAIN_OPEN_WITH_REASON',
+  'captain.auto_opened_after_agent_reply':
+    'CAPTAIN_AUTO_OPENED_AFTER_AGENT_REPLY',
+  'agent_bot.error_moved_to_open': 'BOT_WEBHOOK_FAILURE',
+  'csat.not_sent_due_to_messaging_window': 'CSAT_RESTRICTED',
+  'auto_resolve.not_sent_due_to_messaging_window': 'AUTO_RESOLVE_RESTRICTED',
+  auto_resolution_message: 'AUTO_RESOLUTION_MESSAGE',
+  'linear.issue_created': 'LINEAR_CREATED',
+  'linear.issue_linked': 'LINEAR_LINKED',
+  'linear.issue_unlinked': 'LINEAR_UNLINKED',
+  'whatsapp_call.permission_requested': 'WHATSAPP_CALL_PERMISSION_REQUESTED',
+  'whatsapp_call.permission_granted': 'WHATSAPP_CALL_PERMISSION_GRANTED',
+};
+
+const FIXED_CONTENT_KEYS = {
+  'Conversation was reopened due to agent bot webhook failure':
+    'BOT_WEBHOOK_FAILURE',
+  'Conversation was marked open by system due to an error with the agent bot.':
+    'BOT_WEBHOOK_FAILURE',
+  'CSAT survey not sent due to outgoing message restrictions':
+    'CSAT_RESTRICTED',
+  'Auto-resolve message not sent due to outgoing message restrictions':
+    'AUTO_RESOLVE_RESTRICTED',
+  'Resolving the conversation as it has been inactive for a while. Please start a new conversation if you need further assistance.':
+    'AUTO_RESOLUTION_MESSAGE',
+  'System reopened the conversation due to a new incoming message.':
+    'STATUS_SYSTEM_AUTO_OPEN',
+  'Conversation was marked open automatically after an agent reply':
+    'CAPTAIN_AUTO_OPENED_AFTER_AGENT_REPLY',
+};
+
+const CONTENT_PATTERNS = [
+  [
+    /^Conversation was marked resolved by (.+) due to inactivity$/,
+    'CAPTAIN_RESOLVED',
+    ['userName'],
+  ],
+  [
+    /^Conversation was marked resolved by (.+) \((.+)\)$/,
+    'CAPTAIN_RESOLVED_WITH_REASON',
+    ['userName', 'reason'],
+  ],
+  [
+    /^Conversation was marked resolved by (.+): (.+)$/,
+    'CAPTAIN_RESOLVED_BY_TOOL',
+    ['userName', 'reason'],
+  ],
+  [
+    /^Conversation was marked open by (.+) \((.+)\)$/,
+    'CAPTAIN_OPEN_WITH_REASON',
+    ['userName', 'reason'],
+  ],
+  [/^Conversation was marked open by (.+)$/, 'CAPTAIN_OPEN', ['userName']],
+  [/^Conversation was resolved by (.+)$/, 'RESOLVED_BY', ['contactName']],
+  [
+    /^Conversation was marked resolved by system due to (\d+) days of inactivity$/,
+    'STATUS_AUTO_RESOLVED_DAYS',
+    ['count'],
+  ],
+  [
+    /^Conversation was marked resolved by system due to (\d+) hours of inactivity$/,
+    'STATUS_AUTO_RESOLVED_HOURS',
+    ['count'],
+  ],
+  [
+    /^Conversation was marked resolved by system due to (\d+) minutes of inactivity$/,
+    'STATUS_AUTO_RESOLVED_MINUTES',
+    ['count'],
+  ],
+  [
+    /^Conversation was marked resolved by (.+)$/,
+    'STATUS_RESOLVED',
+    ['userName'],
+  ],
+  [/^Conversation was reopened by (.+)$/, 'STATUS_OPEN', ['userName']],
+  [
+    /^Conversation was marked as pending by (.+)$/,
+    'STATUS_PENDING',
+    ['userName'],
+  ],
+  [/^Conversation was snoozed by (.+)$/, 'STATUS_SNOOZED', ['userName']],
+  [
+    /^(.+) set the priority to (.+)$/,
+    'PRIORITY_ADDED',
+    ['userName', 'newPriority'],
+  ],
+  [
+    /^(.+) changed the priority from (.+) to (.+)$/,
+    'PRIORITY_UPDATED',
+    ['userName', 'oldPriority', 'newPriority'],
+  ],
+  [/^(.+) removed the priority$/, 'PRIORITY_REMOVED', ['userName']],
+  [
+    /^(.+) self-assigned this conversation$/,
+    'ASSIGNEE_SELF_ASSIGNED',
+    ['userName'],
+  ],
+  [
+    /^Assigned to (.+) via (.+) by (.+)$/,
+    'TEAM_ASSIGNED_WITH_ASSIGNEE',
+    ['assigneeName', 'teamName', 'userName'],
+  ],
+  [
+    /^Assigned to (.+) by (.+)$/,
+    'ASSIGNEE_ASSIGNED',
+    ['assigneeName', 'userName'],
+  ],
+  [/^Conversation unassigned by (.+)$/, 'ASSIGNEE_REMOVED', ['userName']],
+  [/^Unassigned from (.+) by (.+)$/, 'TEAM_REMOVED', ['teamName', 'userName']],
+  [/^(.+) added SLA policy (.+)$/, 'SLA_ADDED', ['userName', 'slaName']],
+  [/^(.+) removed SLA policy (.*)$/, 'SLA_REMOVED', ['userName', 'slaName']],
+  [/^(.+) added (.+)$/, 'LABELS_ADDED', ['userName', 'labels']],
+  [/^(.+) removed (.+)$/, 'LABELS_REMOVED', ['userName', 'labels']],
+  [/^(.+) has muted the conversation$/, 'MUTED', ['userName']],
+  [/^(.+) has unmuted the conversation$/, 'UNMUTED', ['userName']],
+  [
+    /^Linear issue (\S+) was created by (.+)$/,
+    'LINEAR_CREATED',
+    ['issueId', 'userName'],
+  ],
+  [
+    /^Linear issue (\S+) was linked by (.+)$/,
+    'LINEAR_LINKED',
+    ['issueId', 'userName'],
+  ],
+  [
+    /^Linear issue (\S+) was unlinked by (.+)$/,
+    'LINEAR_UNLINKED',
+    ['issueId', 'userName'],
+  ],
+  [
+    /^Sent a call permission request to (.+)\.$/,
+    'WHATSAPP_CALL_PERMISSION_REQUESTED',
+    ['contactName'],
+  ],
+  [
+    /^(.+) accepted the call permission request\.$/,
+    'WHATSAPP_CALL_PERMISSION_GRANTED',
+    ['contactName'],
+  ],
+];
+
 const localizedContent = computed(() => {
   const normalizedContent = String(content.value ?? '');
-  const resolvedBy = normalizedContent.match(
-    /^Conversation was resolved by (.+)$/
-  );
-  if (resolvedBy) {
-    const name = ['Anonymous Visitor', 'visitor'].includes(resolvedBy[1])
-      ? t('CONVERSATION.ACTIVITY.ANONYMOUS_VISITOR')
-      : resolvedBy[1];
-    return t('CONVERSATION.ACTIVITY.RESOLVED_BY', { name });
-  }
+  const structuredActivity = contentAttributes.value?.activity;
   if (
-    normalizedContent ===
-    'Conversation was reopened due to agent bot webhook failure'
+    structuredActivity &&
+    !Object.hasOwn(ACTIVITY_KEYS, structuredActivity.type)
   ) {
-    return t('CONVERSATION.ACTIVITY.BOT_WEBHOOK_FAILURE');
+    return normalizedContent;
   }
-  if (
-    normalizedContent ===
-    'CSAT survey not sent due to outgoing message restrictions'
-  ) {
-    return t('CONVERSATION.ACTIVITY.CSAT_RESTRICTED');
-  }
-  const linear = normalizedContent.match(
-    /^Linear issue (\S+) was (created|linked|unlinked) by (.+)$/
-  );
-  if (linear) {
-    const params = {
-      issueId: linear[1],
-      name: linear[3],
-    };
-    if (linear[2] === 'created') {
-      return t('CONVERSATION.ACTIVITY.LINEAR_CREATED', params);
+
+  let key = structuredActivity
+    ? ACTIVITY_KEYS[structuredActivity.type]
+    : FIXED_CONTENT_KEYS[normalizedContent];
+  let params = structuredActivity;
+
+  if (!structuredActivity && !key) {
+    const matchedPattern = CONTENT_PATTERNS.find(([pattern]) =>
+      pattern.test(normalizedContent)
+    );
+    if (matchedPattern) {
+      const [pattern, patternKey, paramNames] = matchedPattern;
+      const match = normalizedContent.match(pattern);
+      key = patternKey;
+      params = Object.fromEntries(
+        paramNames.map((paramName, index) => [paramName, match[index + 1]])
+      );
     }
-    if (linear[2] === 'linked') {
-      return t('CONVERSATION.ACTIVITY.LINEAR_LINKED', params);
-    }
-    return t('CONVERSATION.ACTIVITY.LINEAR_UNLINKED', params);
   }
+
+  if (key) {
+    params = { ...params };
+    if (Array.isArray(params.labels)) params.labels = params.labels.join(', ');
+    if (['Anonymous Visitor', 'visitor'].includes(params.contactName)) {
+      params.contactName = t('CONVERSATION.ACTIVITY.ANONYMOUS_VISITOR');
+    }
+    if (params.userName === 'Automation System') {
+      params.userName = t('CONVERSATION.ACTIVITY.AUTOMATION_SYSTEM');
+    }
+    ['oldPriority', 'newPriority'].forEach(priorityKey => {
+      const priority = params[priorityKey];
+      if (['urgent', 'high', 'medium', 'low'].includes(priority)) {
+        // eslint-disable-next-line @intlify/vue-i18n/no-dynamic-keys
+        params[priorityKey] = t(
+          `CONVERSATION.PRIORITY.OPTIONS.${priority.toUpperCase()}`
+        );
+      }
+    });
+    // eslint-disable-next-line @intlify/vue-i18n/no-dynamic-keys
+    return t(`CONVERSATION.ACTIVITY.${key}`, params);
+  }
+
   return normalizedContent;
 });
 
diff --git a/frontend/app/javascript/dashboard/components-next/message/bubbles/specs/Activity.spec.js b/frontend/app/javascript/dashboard/components-next/message/bubbles/specs/Activity.spec.js
index f762ffa7..50a5e968 100644
--- a/frontend/app/javascript/dashboard/components-next/message/bubbles/specs/Activity.spec.js
+++ b/frontend/app/javascript/dashboard/components-next/message/bubbles/specs/Activity.spec.js
@@ -1,10 +1,20 @@
 import { config, mount } from '@vue/test-utils';
-import { afterAll, beforeAll, describe, expect, it, vi } from 'vitest';
+import {
+  afterAll,
+  beforeAll,
+  beforeEach,
+  describe,
+  expect,
+  it,
+  vi,
+} from 'vitest';
+import VueDOMPurifyHTML from 'vue-dompurify-html';
 
 import Activity from '../Activity.vue';
 
 const mocks = vi.hoisted(() => ({
   content: '',
+  contentAttributes: {},
 }));
 
 vi.mock('shared/helpers/timeHelper', () => ({
@@ -30,6 +40,7 @@ vi.mock('../../provider.js', async () => {
   return {
     useMessageContext: () => ({
       content: ref(mocks.content),
+      contentAttributes: ref(mocks.contentAttributes),
       createdAt: ref(1786018000),
     }),
   };
@@ -38,11 +49,7 @@ vi.mock('../../provider.js', async () => {
 const mountActivity = () =>
   mount(Activity, {
     global: {
-      directives: {
-        dompurifyHtml: (element, binding) => {
-          element.innerHTML = binding.value;
-        },
-      },
+      plugins: [VueDOMPurifyHTML],
       stubs: {
         BaseBubble: {
           template: '<div><slot /></div>',
@@ -52,6 +59,12 @@ const mountActivity = () =>
   });
 
 describe('Activity bubble', () => {
+  beforeEach(() => {
+    i18n.global.locale.value = 'zh_CN';
+    mocks.content = '';
+    mocks.contentAttributes = {};
+  });
+
   it('allows long links in system messages to wrap inside the bubble', () => {
     mocks.content = `来源页面：<a href="${longURL}">${longURL}</a>`;
     const wrapper = mountActivity();
@@ -68,8 +81,36 @@ describe('Activity bubble', () => {
   });
 
   it.each([
-    ['Conversation was resolved by Anonymous Visitor', '会话已由匿名访客解决'],
-    ['Conversation was resolved by Alice', '会话已由Alice解决'],
+    [
+      'Conversation was resolved by Anonymous Visitor',
+      '会话已由 匿名访客 解决',
+    ],
+    [
+      'Conversation was marked resolved by Alice',
+      '会话已由 Alice 标记为已解决',
+    ],
+    ['Conversation was reopened by Alice', '会话已由 Alice 重新打开'],
+    [
+      'Conversation was marked as pending by Alice',
+      '会话已由 Alice 标记为待处理',
+    ],
+    ['Conversation was snoozed by Alice', '会话已由 Alice 推迟'],
+    [
+      'Conversation was marked resolved by system due to 2 hours of inactivity',
+      '会话因 2 小时无活动已由系统自动解决',
+    ],
+    [
+      'Alice changed the priority from low to high',
+      'Alice 将优先级从 低 更改为 高',
+    ],
+    ['Assigned to Bob by Alice', 'Alice 将会话分配给 Bob'],
+    [
+      'Assigned to Bob via Support by Alice',
+      'Alice 通过团队 Support 将会话分配给 Bob',
+    ],
+    ['Alice added vip, billing', 'Alice 添加了标签：vip, billing'],
+    ['Alice removed SLA policy Gold', 'Alice 移除了 SLA 策略 Gold'],
+    ['Alice has muted the conversation', 'Alice 已将会话静音'],
     [
       'Conversation was reopened due to agent bot webhook failure',
       '由于客服机器人 Webhook 失败，会话已重新打开',
@@ -78,19 +119,20 @@ describe('Activity bubble', () => {
       'CSAT survey not sent due to outgoing message restrictions',
       '由于发送消息受限，未发送 CSAT 调查',
     ],
+    [
+      'Auto-resolve message not sent due to outgoing message restrictions',
+      '由于发送消息受限，未发送自动解决消息',
+    ],
     [
       'Linear issue ENG-1 was created by Alice',
       'Linear 问题 ENG-1 已由 Alice 创建',
     ],
     [
-      'Linear issue ENG-1 was linked by Alice',
-      'Linear 问题 ENG-1 已由 Alice 关联',
+      'Conversation was marked resolved by Captain due to inactivity',
+      'Captain 因无活动将会话标记为已解决',
     ],
-    [
-      'Linear issue ENG-1 was unlinked by Alice',
-      'Linear 问题 ENG-1 已由 Alice 取消关联',
-    ],
-  ])('localizes known backend activity content: %s', (content, expected) => {
+    ['Sent a call permission request to Bob.', '已向 Bob 发送通话权限请求。'],
+  ])('localizes known legacy activity content: %s', (content, expected) => {
     mocks.content = content;
     const wrapper = mountActivity();
 
@@ -99,6 +141,215 @@ describe('Activity bubble', () => {
     );
   });
 
+  it.each([
+    [
+      { type: 'status.resolved', userName: 'Alice' },
+      '会话已由 Alice 标记为已解决',
+    ],
+    [
+      { type: 'status.contact_resolved', contactName: 'visitor' },
+      '会话已由 匿名访客 解决',
+    ],
+    [{ type: 'status.open', userName: 'Alice' }, '会话已由 Alice 重新打开'],
+    [
+      { type: 'status.pending', userName: 'Alice' },
+      '会话已由 Alice 标记为待处理',
+    ],
+    [{ type: 'status.snoozed', userName: 'Alice' }, '会话已由 Alice 推迟'],
+    [
+      { type: 'status.auto_resolved_days', count: 2 },
+      '会话因 2 天无活动已由系统自动解决',
+    ],
+    [
+      { type: 'status.auto_resolved_hours', count: 3 },
+      '会话因 3 小时无活动已由系统自动解决',
+    ],
+    [
+      { type: 'status.auto_resolved_minutes', count: 15 },
+      '会话因 15 分钟无活动已由系统自动解决',
+    ],
+    [
+      { type: 'status.system_auto_open' },
+      '收到新的传入消息后，系统重新打开了会话。',
+    ],
+    [
+      { type: 'priority.added', userName: 'Alice', newPriority: 'urgent' },
+      'Alice 将优先级设为 紧急的',
+    ],
+    [
+      {
+        type: 'priority.updated',
+        userName: 'Alice',
+        oldPriority: 'low',
+        newPriority: 'high',
+      },
+      'Alice 将优先级从 低 更改为 高',
+    ],
+    [{ type: 'priority.removed', userName: 'Alice' }, 'Alice 移除了优先级'],
+    [
+      { type: 'assignee.self_assigned', userName: 'Alice' },
+      'Alice 将此会话分配给自己',
+    ],
+    [
+      { type: 'assignee.assigned', userName: 'Alice', assigneeName: 'Bob' },
+      'Alice 将会话分配给 Bob',
+    ],
+    [{ type: 'assignee.removed', userName: 'Alice' }, 'Alice 取消了会话分配'],
+    [
+      { type: 'team.assigned', userName: 'Alice', teamName: 'Support' },
+      'Alice 将会话分配给团队 Support',
+    ],
+    [
+      {
+        type: 'team.assigned_with_assignee',
+        userName: 'Alice',
+        teamName: 'Support',
+        assigneeName: 'Bob',
+      },
+      'Alice 通过团队 Support 将会话分配给 Bob',
+    ],
+    [
+      { type: 'team.removed', userName: 'Alice', teamName: 'Support' },
+      'Alice 将会话从团队 Support 中移除',
+    ],
+    [
+      { type: 'labels.added', userName: 'Alice', labels: ['vip', 'billing'] },
+      'Alice 添加了标签：vip, billing',
+    ],
+    [
+      { type: 'labels.removed', userName: 'Alice', labels: 'vip' },
+      'Alice 移除了标签：vip',
+    ],
+    [
+      { type: 'sla.added', userName: 'Alice', slaName: 'Gold' },
+      'Alice 添加了 SLA 策略 Gold',
+    ],
+    [
+      { type: 'sla.removed', userName: 'Alice', slaName: 'Gold' },
+      'Alice 移除了 SLA 策略 Gold',
+    ],
+    [{ type: 'muted', userName: 'Alice' }, 'Alice 已将会话静音'],
+    [{ type: 'unmuted', userName: 'Alice' }, 'Alice 已取消会话静音'],
+    [
+      { type: 'captain.resolved', userName: 'Captain' },
+      'Captain 因无活动将会话标记为已解决',
+    ],
+    [
+      {
+        type: 'captain.resolved_with_reason',
+        userName: 'Captain',
+        reason: 'Done',
+      },
+      'Captain 将会话标记为已解决（Done）',
+    ],
+    [
+      { type: 'captain.resolved_by_tool', userName: 'Captain', reason: 'Done' },
+      'Captain 将会话标记为已解决：Done',
+    ],
+    [{ type: 'captain.open', userName: 'Captain' }, 'Captain 将会话标记为打开'],
+    [
+      {
+        type: 'captain.open_with_reason',
+        userName: 'Captain',
+        reason: 'Reply',
+      },
+      'Captain 将会话标记为打开（Reply）',
+    ],
+    [
+      { type: 'captain.auto_opened_after_agent_reply' },
+      '客服回复后，会话已自动标记为打开',
+    ],
+    [
+      { type: 'agent_bot.error_moved_to_open' },
+      '由于客服机器人 Webhook 失败，会话已重新打开',
+    ],
+    [
+      { type: 'csat.not_sent_due_to_messaging_window' },
+      '由于发送消息受限，未发送 CSAT 调查',
+    ],
+    [
+      { type: 'auto_resolve.not_sent_due_to_messaging_window' },
+      '由于发送消息受限，未发送自动解决消息',
+    ],
+    [
+      { type: 'auto_resolution_message' },
+      '会话已有一段时间没有活动，现将自动解决。如需进一步帮助，请发起新会话。',
+    ],
+    [
+      { type: 'linear.issue_created', issueId: 'ENG-1', userName: 'Alice' },
+      'Linear 问题 ENG-1 已由 Alice 创建',
+    ],
+    [
+      { type: 'linear.issue_linked', issueId: 'ENG-1', userName: 'Alice' },
+      'Linear 问题 ENG-1 已由 Alice 关联',
+    ],
+    [
+      { type: 'linear.issue_unlinked', issueId: 'ENG-1', userName: 'Alice' },
+      'Linear 问题 ENG-1 已由 Alice 取消关联',
+    ],
+    [
+      { type: 'whatsapp_call.permission_requested', contactName: 'Bob' },
+      '已向 Bob 发送通话权限请求。',
+    ],
+    [
+      { type: 'whatsapp_call.permission_granted', contactName: 'Bob' },
+      'Bob 已接受通话权限请求。',
+    ],
+  ])('localizes a structured activity type', (activity, expected) => {
+    mocks.content = 'Untranslated fallback';
+    mocks.contentAttributes = { activity };
+    const wrapper = mountActivity();
+
+    expect(wrapper.get('[data-bubble-name="activity"] span').text()).toBe(
+      expected
+    );
+  });
+
+  it.each([
+    ['custom.unknown', 'Conversation was resolved by Alice'],
+    ['sla.updated', 'Alice added SLA policy Gold'],
+    ['toString', 'Conversation was reopened by Alice'],
+    ['constructor', 'Conversation was marked as pending by Alice'],
+  ])(
+    'falls back to stored content for unsupported structured type %s',
+    (type, content) => {
+      mocks.content = content;
+      mocks.contentAttributes = { activity: { type } };
+
+      expect(mountActivity().get('span').text()).toBe(content);
+    }
+  );
+
+  it('uses the English activity catalog when the dashboard locale is English', () => {
+    i18n.global.locale.value = 'en';
+    mocks.contentAttributes = {
+      activity: {
+        type: 'priority.updated',
+        userName: 'Automation System',
+        oldPriority: 'low',
+        newPriority: 'high',
+      },
+    };
+
+    expect(mountActivity().get('span').text()).toBe(
+      'Automation System changed the priority from Low to High'
+    );
+  });
+
+  it('sanitizes malicious dynamic activity names with the real directive', () => {
+    mocks.contentAttributes = {
+      activity: {
+        type: 'status.resolved',
+        userName: 'Alice<img src=x onerror="window.activityXss = true">',
+      },
+    };
+    const content = mountActivity().get('span');
+
+    expect(content.text()).toBe('会话已由 Alice 标记为已解决');
+    expect(content.get('img').attributes('onerror')).toBeUndefined();
+    expect(window.activityXss).toBeUndefined();
+  });
+
   it('renders an empty activity when content is null', () => {
     mocks.content = null;
     const wrapper = mountActivity();
diff --git a/frontend/app/javascript/dashboard/i18n/locale/en/conversation.json b/frontend/app/javascript/dashboard/i18n/locale/en/conversation.json
index fdfbcad3..71b0b70b 100644
--- a/frontend/app/javascript/dashboard/i18n/locale/en/conversation.json
+++ b/frontend/app/javascript/dashboard/i18n/locale/en/conversation.json
@@ -4,12 +4,46 @@
     "CSAT_REPLY_MESSAGE": "Please rate the conversation",
     "ACTIVITY": {
       "ANONYMOUS_VISITOR": "Anonymous visitor",
-      "RESOLVED_BY": "Conversation was resolved by {name}",
+      "AUTOMATION_SYSTEM": "Automation System",
+      "RESOLVED_BY": "Conversation was resolved by {contactName}",
+      "STATUS_RESOLVED": "Conversation was marked resolved by {userName}",
+      "STATUS_OPEN": "Conversation was reopened by {userName}",
+      "STATUS_PENDING": "Conversation was marked as pending by {userName}",
+      "STATUS_SNOOZED": "Conversation was snoozed by {userName}",
+      "STATUS_AUTO_RESOLVED_DAYS": "Conversation was marked resolved by system due to {count} days of inactivity",
+      "STATUS_AUTO_RESOLVED_HOURS": "Conversation was marked resolved by system due to {count} hours of inactivity",
+      "STATUS_AUTO_RESOLVED_MINUTES": "Conversation was marked resolved by system due to {count} minutes of inactivity",
+      "STATUS_SYSTEM_AUTO_OPEN": "System reopened the conversation due to a new incoming message.",
+      "PRIORITY_ADDED": "{userName} set the priority to {newPriority}",
+      "PRIORITY_UPDATED": "{userName} changed the priority from {oldPriority} to {newPriority}",
+      "PRIORITY_REMOVED": "{userName} removed the priority",
+      "ASSIGNEE_SELF_ASSIGNED": "{userName} self-assigned this conversation",
+      "ASSIGNEE_ASSIGNED": "Assigned to {assigneeName} by {userName}",
+      "ASSIGNEE_REMOVED": "Conversation unassigned by {userName}",
+      "TEAM_ASSIGNED": "Assigned to {teamName} by {userName}",
+      "TEAM_ASSIGNED_WITH_ASSIGNEE": "Assigned to {assigneeName} via {teamName} by {userName}",
+      "TEAM_REMOVED": "Unassigned from {teamName} by {userName}",
+      "LABELS_ADDED": "{userName} added {labels}",
+      "LABELS_REMOVED": "{userName} removed {labels}",
+      "SLA_ADDED": "{userName} added SLA policy {slaName}",
+      "SLA_REMOVED": "{userName} removed SLA policy {slaName}",
+      "MUTED": "{userName} has muted the conversation",
+      "UNMUTED": "{userName} has unmuted the conversation",
+      "CAPTAIN_RESOLVED": "Conversation was marked resolved by {userName} due to inactivity",
+      "CAPTAIN_RESOLVED_WITH_REASON": "Conversation was marked resolved by {userName} ({reason})",
+      "CAPTAIN_RESOLVED_BY_TOOL": "Conversation was marked resolved by {userName}: {reason}",
+      "CAPTAIN_OPEN": "Conversation was marked open by {userName}",
+      "CAPTAIN_OPEN_WITH_REASON": "Conversation was marked open by {userName} ({reason})",
+      "CAPTAIN_AUTO_OPENED_AFTER_AGENT_REPLY": "Conversation was marked open automatically after an agent reply",
       "BOT_WEBHOOK_FAILURE": "Conversation was reopened because the agent bot webhook failed",
       "CSAT_RESTRICTED": "CSAT survey was not sent due to outgoing message restrictions",
-      "LINEAR_CREATED": "Linear issue {issueId} was created by {name}",
-      "LINEAR_LINKED": "Linear issue {issueId} was linked by {name}",
-      "LINEAR_UNLINKED": "Linear issue {issueId} was unlinked by {name}"
+      "AUTO_RESOLVE_RESTRICTED": "Auto-resolve message was not sent due to outgoing message restrictions",
+      "AUTO_RESOLUTION_MESSAGE": "Resolving the conversation as it has been inactive for a while. Please start a new conversation if you need further assistance.",
+      "LINEAR_CREATED": "Linear issue {issueId} was created by {userName}",
+      "LINEAR_LINKED": "Linear issue {issueId} was linked by {userName}",
+      "LINEAR_UNLINKED": "Linear issue {issueId} was unlinked by {userName}",
+      "WHATSAPP_CALL_PERMISSION_REQUESTED": "Sent a call permission request to {contactName}.",
+      "WHATSAPP_CALL_PERMISSION_GRANTED": "{contactName} accepted the call permission request."
     },
     "404": "Sorry, we cannot find the conversation. Please try again",
     "SWITCH_VIEW_LAYOUT": "Switch the layout",
diff --git a/frontend/app/javascript/dashboard/i18n/locale/zh_CN/conversation.json b/frontend/app/javascript/dashboard/i18n/locale/zh_CN/conversation.json
index 181bdcdd..d4e80997 100644
--- a/frontend/app/javascript/dashboard/i18n/locale/zh_CN/conversation.json
+++ b/frontend/app/javascript/dashboard/i18n/locale/zh_CN/conversation.json
@@ -4,12 +4,46 @@
     "CSAT_REPLY_MESSAGE": "请为会话评分",
     "ACTIVITY": {
       "ANONYMOUS_VISITOR": "匿名访客",
-      "RESOLVED_BY": "会话已由{name}解决",
+      "AUTOMATION_SYSTEM": "自动化系统",
+      "RESOLVED_BY": "会话已由 {contactName} 解决",
+      "STATUS_RESOLVED": "会话已由 {userName} 标记为已解决",
+      "STATUS_OPEN": "会话已由 {userName} 重新打开",
+      "STATUS_PENDING": "会话已由 {userName} 标记为待处理",
+      "STATUS_SNOOZED": "会话已由 {userName} 推迟",
+      "STATUS_AUTO_RESOLVED_DAYS": "会话因 {count} 天无活动已由系统自动解决",
+      "STATUS_AUTO_RESOLVED_HOURS": "会话因 {count} 小时无活动已由系统自动解决",
+      "STATUS_AUTO_RESOLVED_MINUTES": "会话因 {count} 分钟无活动已由系统自动解决",
+      "STATUS_SYSTEM_AUTO_OPEN": "收到新的传入消息后，系统重新打开了会话。",
+      "PRIORITY_ADDED": "{userName} 将优先级设为 {newPriority}",
+      "PRIORITY_UPDATED": "{userName} 将优先级从 {oldPriority} 更改为 {newPriority}",
+      "PRIORITY_REMOVED": "{userName} 移除了优先级",
+      "ASSIGNEE_SELF_ASSIGNED": "{userName} 将此会话分配给自己",
+      "ASSIGNEE_ASSIGNED": "{userName} 将会话分配给 {assigneeName}",
+      "ASSIGNEE_REMOVED": "{userName} 取消了会话分配",
+      "TEAM_ASSIGNED": "{userName} 将会话分配给团队 {teamName}",
+      "TEAM_ASSIGNED_WITH_ASSIGNEE": "{userName} 通过团队 {teamName} 将会话分配给 {assigneeName}",
+      "TEAM_REMOVED": "{userName} 将会话从团队 {teamName} 中移除",
+      "LABELS_ADDED": "{userName} 添加了标签：{labels}",
+      "LABELS_REMOVED": "{userName} 移除了标签：{labels}",
+      "SLA_ADDED": "{userName} 添加了 SLA 策略 {slaName}",
+      "SLA_REMOVED": "{userName} 移除了 SLA 策略 {slaName}",
+      "MUTED": "{userName} 已将会话静音",
+      "UNMUTED": "{userName} 已取消会话静音",
+      "CAPTAIN_RESOLVED": "{userName} 因无活动将会话标记为已解决",
+      "CAPTAIN_RESOLVED_WITH_REASON": "{userName} 将会话标记为已解决（{reason}）",
+      "CAPTAIN_RESOLVED_BY_TOOL": "{userName} 将会话标记为已解决：{reason}",
+      "CAPTAIN_OPEN": "{userName} 将会话标记为打开",
+      "CAPTAIN_OPEN_WITH_REASON": "{userName} 将会话标记为打开（{reason}）",
+      "CAPTAIN_AUTO_OPENED_AFTER_AGENT_REPLY": "客服回复后，会话已自动标记为打开",
       "BOT_WEBHOOK_FAILURE": "由于客服机器人 Webhook 失败，会话已重新打开",
       "CSAT_RESTRICTED": "由于发送消息受限，未发送 CSAT 调查",
-      "LINEAR_CREATED": "Linear 问题 {issueId} 已由 {name} 创建",
-      "LINEAR_LINKED": "Linear 问题 {issueId} 已由 {name} 关联",
-      "LINEAR_UNLINKED": "Linear 问题 {issueId} 已由 {name} 取消关联"
+      "AUTO_RESOLVE_RESTRICTED": "由于发送消息受限，未发送自动解决消息",
+      "AUTO_RESOLUTION_MESSAGE": "会话已有一段时间没有活动，现将自动解决。如需进一步帮助，请发起新会话。",
+      "LINEAR_CREATED": "Linear 问题 {issueId} 已由 {userName} 创建",
+      "LINEAR_LINKED": "Linear 问题 {issueId} 已由 {userName} 关联",
+      "LINEAR_UNLINKED": "Linear 问题 {issueId} 已由 {userName} 取消关联",
+      "WHATSAPP_CALL_PERMISSION_REQUESTED": "已向 {contactName} 发送通话权限请求。",
+      "WHATSAPP_CALL_PERMISSION_GRANTED": "{contactName} 已接受通话权限请求。"
     },
     "404": "抱歉，我们找不到对话。请重试",
     "SWITCH_VIEW_LAYOUT": "切换布局",