fix(chat): isolate concurrent session events and workspace dialog i18n (#351)

* feat: per-session workspace with folder picker, HERMES_HOME support, esbuild fix

* fix(chat): isolate concurrent session events and workspace dialog i18n

Two user-visible bugs are fixed here:

1. Workspace dialog title showed the raw i18n key 'chat.setWorkspaceTitle' because the key was never added to en.ts / zh.ts. The dialog is opened from ChatPanel.vue but only 'setWorkspace' existed. Add the missing 'setWorkspaceTitle' translation in both locales.

2. With two concurrent runs the assistant text from session A would show up in session B (and vice versa). The /chat-run namespace uses a single shared Socket.IO connection on the client; every startRunViaSocket() call registers its own listeners on the same socket. The server fans events out via 'session:<id>' rooms, but a single socket can be in multiple rooms at once and there was no per-event filtering on the client. Each run's closure captured its own sid and wrote into the wrong session. The server already tags every payload with session_id, so the fix is a guard inside handleEvent() that drops events whose session_id does not match this run's body.session_id. Untagged events are still accepted for backwards compatibility.

3. Also fix a related crash where setting a workspace on a session that had not been persisted yet (no first message sent) threw because the row did not exist. Create the row on demand inside setWorkspace controller.

* fix: upgrade esbuild to 0.27+ for vite 8 compatibility

---------

Co-authored-by: ekko <fqsy1416@gmail.com>

packages/client/src/components/hermes/chat/ChatPanel.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { renameSession } from '@/api/hermes/sessions'
+import { renameSession, setSessionWorkspace } from '@/api/hermes/sessions'
 import { useChatStore, type Session } from '@/stores/hermes/chat'
 import { useSessionBrowserPrefsStore } from '@/stores/hermes/session-browser-prefs'
 import { NButton, NDropdown, NInput, NModal, NTooltip, useMessage } from 'naive-ui'
@@ -7,6 +7,7 @@ import { computed, nextTick, onMounted, onUnmounted, ref, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { getSourceLabel } from '@/shared/session-display'
 import { copyToClipboard } from '@/utils/clipboard'
+import FolderPicker from './FolderPicker.vue'
 import ChatInput from './ChatInput.vue'
 import ConversationMonitorPane from './ConversationMonitorPane.vue'
 import MessageList from './MessageList.vue'
@@ -183,6 +184,7 @@ const contextSessionPinned = computed(() =>
 const contextMenuOptions = computed(() => [
   { label: t(contextSessionPinned.value ? 'chat.unpin' : 'chat.pin'), key: 'pin' },
   { label: t('chat.rename'), key: 'rename' },
+  { label: t('chat.setWorkspace'), key: 'workspace' },
   { label: t('chat.copySessionId'), key: 'copy-id' },
 ])
 
@@ -207,6 +209,11 @@ function handleContextMenuSelect(key: string) {
   }
   if (key === 'copy-id') {
     copySessionId(contextSessionId.value)
+  } else if (key === 'workspace') {
+    const session = chatStore.sessions.find(s => s.id === contextSessionId.value)
+    workspaceSessionId.value = contextSessionId.value
+    workspaceValue.value = session?.workspace || ''
+    showWorkspaceModal.value = true
   } else if (key === 'rename') {
     const session = chatStore.sessions.find(s => s.id === contextSessionId.value)
     renameSessionId.value = contextSessionId.value
@@ -237,6 +244,26 @@ async function handleRenameConfirm() {
   }
   showRenameModal.value = false
 }
+
+const showWorkspaceModal = ref(false)
+const workspaceValue = ref('')
+const workspaceSessionId = ref<string | null>(null)
+
+async function handleWorkspaceConfirm() {
+  if (!workspaceSessionId.value) return
+  const ok = await setSessionWorkspace(workspaceSessionId.value, workspaceValue.value || null)
+  if (ok) {
+    const session = chatStore.sessions.find(s => s.id === workspaceSessionId.value)
+    if (session) session.workspace = workspaceValue.value || null
+    if (chatStore.activeSession?.id === workspaceSessionId.value) {
+      chatStore.activeSession.workspace = workspaceValue.value || null
+    }
+    message.success(t('chat.workspaceSet'))
+  } else {
+    message.error(t('chat.workspaceSetFailed'))
+  }
+  showWorkspaceModal.value = false
+}
 </script>
 
 <template>
@@ -330,6 +357,18 @@ async function handleRenameConfirm() {
       />
     </NModal>
 
+    <NModal
+      v-model:show="showWorkspaceModal"
+      preset="dialog"
+      :title="t('chat.setWorkspaceTitle')"
+      :positive-text="t('common.ok')"
+      :negative-text="t('common.cancel')"
+      style="width: 520px"
+      @positive-click="handleWorkspaceConfirm"
+    >
+      <FolderPicker v-model="workspaceValue" />
+    </NModal>
+
     <div class="chat-main">
       <header class="chat-header">
         <div class="header-left">
@@ -340,6 +379,7 @@ async function handleRenameConfirm() {
           </NButton>
           <span class="header-session-title">{{ headerTitle }}</span>
           <span v-if="activeSessionSource" class="source-badge">{{ getSourceLabel(activeSessionSource) }}</span>
+          <span v-if="chatStore.activeSession?.workspace" class="workspace-badge" :title="chatStore.activeSession.workspace">📁 {{ chatStore.activeSession.workspace.split('/').pop() || chatStore.activeSession.workspace }}</span>
         </div>
         <div class="header-actions">
           <!-- chat/live mode toggle hidden -->
@@ -710,4 +750,17 @@ async function handleRenameConfirm() {
     padding: 16px 12px 16px 52px;
   }
 }
+
+.workspace-badge {
+  font-size: 11px;
+  color: $text-muted;
+  background: rgba(255, 255, 255, 0.05);
+  padding: 2px 8px;
+  border-radius: 4px;
+  max-width: 160px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  cursor: default;
+}
 </style>