fix(chat): keep route agent for conversation deep links

mateclaw-ui/src/utils/chatRouteHydration.ts

@@ -23,3 +23,14 @@ export function resolveRouteHydrationQuery(options: {
 
   return { agentId, conversationId }
 }
+
+export function resolveConversationAgentSelection(options: {
+  routeAgentId?: string
+  conversationAgentId?: IdLike | null
+  currentAgentId?: IdLike | null
+}): string {
+  if (options.routeAgentId) return options.routeAgentId
+  if (options.conversationAgentId != null) return String(options.conversationAgentId)
+  if (options.currentAgentId != null) return String(options.currentAgentId)
+  return ''
+}

mateclaw-ui/src/views/ChatConsole.vue

@@ -291,7 +291,7 @@ import { useChat } from '@/composables/chat/useChat'
 import RunOverviewPanel from '@/components/chat/RunOverviewPanel.vue'
 import { reconstructErrorInfo } from '@/types/chatError'
 import { reconcileMessages, extractMessages } from '@/utils/messageReconcile'
-import { resolveRouteHydrationQuery } from '@/utils/chatRouteHydration'
+import { resolveConversationAgentSelection, resolveRouteHydrationQuery } from '@/utils/chatRouteHydration'
 import type { Conversation, Agent, ModelConfig, ProviderInfo, ActiveModelsInfo, ChatAttachment, MessageContentPart, Message, ToolCallMeta } from '@/types'
 
 // 导入组件化组件
@@ -1632,7 +1632,7 @@ async function hydrateStateFromRoute() {
   if (conversationId && conversationId !== currentConversationId.value) {
     const matchedConversation = conversations.value.find(conv => conv.conversationId === conversationId)
     if (matchedConversation) {
-      await selectConversation(matchedConversation)
+      await selectConversation(matchedConversation, agentId)
     } else {
       // 会话不在已加载列表中（可能来自 Sessions 页面跳转），尝试加载消息
       currentConversationId.value = conversationId
@@ -1669,7 +1669,7 @@ function syncRouteState() {
   router.replace({ path: '/chat', query })
 }
 
-async function selectConversation(conv: Conversation) {
+async function selectConversation(conv: Conversation, routeAgentId = '') {
   if (isMobile.value) convPanelOpen.value = false
   // 切换到不同会话：只清理本地 UI/SSE（resetForNewConversation 会 stream.disconnect + 清变量），
   // 但不 POST /chat/{A}/stop —— 让 A 的后台 agent run 跑到完成。
@@ -1682,7 +1682,11 @@ async function selectConversation(conv: Conversation) {
     messageListRef.value?.resetScrollLock()
   }
   currentConversationId.value = conv.conversationId
-  selectedAgentId.value = conv.agentId || selectedAgentId.value
+  selectedAgentId.value = resolveConversationAgentSelection({
+    routeAgentId,
+    conversationAgentId: conv.agentId,
+    currentAgentId: selectedAgentId.value,
+  })
   // Opening another conversation: its pin (or the agent/global fallback) is
   // authoritative, so clear the previous conversation's manual-pick guard.
   userPickedModel.value = false

mateclaw-ui/src/views/__tests__/chatConsoleRouteHydration.test.ts

@@ -1,6 +1,6 @@
 // @vitest-environment happy-dom
 import { describe, expect, it } from 'vitest'
-import { resolveRouteHydrationQuery } from '@/utils/chatRouteHydration'
+import { resolveConversationAgentSelection, resolveRouteHydrationQuery } from '@/utils/chatRouteHydration'
 
 const agents = [{ id: 'agent-visible' }]
 const conversations = [{ conversationId: 'conv-listed' }]
@@ -34,3 +34,25 @@ describe('resolveRouteHydrationQuery', () => {
     })
   })
 })
+
+describe('resolveConversationAgentSelection', () => {
+  it('keeps a valid route agent when opening an existing conversation with stale metadata', () => {
+    const selected = resolveConversationAgentSelection({
+      routeAgentId: '20798621241343139868',
+      conversationAgentId: '2079862124313986',
+      currentAgentId: '',
+    })
+
+    expect(selected).toBe('20798621241343139868')
+  })
+
+  it('uses the conversation agent when no route agent is provided', () => {
+    const selected = resolveConversationAgentSelection({
+      routeAgentId: '',
+      conversationAgentId: '2079862124313986',
+      currentAgentId: 'fallback',
+    })
+
+    expect(selected).toBe('2079862124313986')
+  })
+})