fix(client): correct the Chinese hero slogan to 探索未至之境

The shipped copy read 探索未知之境; the product slogan is 探索未至之境.
English copy is untouched.

packages/client/ui-conversation/src/client/locales.ts

@@ -60,7 +60,7 @@ export const zh = {
   'access.confirm.acknowledge': '我已了解风险，并愿意继续',
   'access.confirm.cancel': '取消',
   'access.confirm.enable': '启用 Full access',
-  'hero.headline': '探索未知之境',
+  'hero.headline': '探索未至之境',
   'hero.preview': '预览版',
   'hero.chooseWorkspace': '选择工作区',
   'session.hierarchy': '会话层级',

packages/client/ui-conversation/tests/skeleton.spec.tsx

@@ -356,7 +356,7 @@ describe('ConversationRoot resident composer', () => {
     const header = b.view.container.querySelector('header')
     expect(host).not.toBeNull()
     expect(header?.getAttribute('aria-hidden')).toBe('true')
-    expect(b.view.getByText('探索未知之境')).toBeTruthy()
+    expect(b.view.getByText('探索未至之境')).toBeTruthy()
     expect(b.view.getByText('预览版')).toBeTruthy()
     expect(b.view.queryByTestId('view-chat')).toBeNull()
     // The same machine-backed textarea is live in the hero, and the
@@ -380,7 +380,7 @@ describe('ConversationRoot resident composer', () => {
     const b = mount(conversationSnapshot({ composerPhase: 'blank', blank: true, openState: 'loading' }))
     const root = b.view.container.querySelector('[data-phase]')
     expect(root?.getAttribute('data-phase')).toBe('settling')
-    expect(b.view.queryByText('探索未知之境')).toBeNull()
+    expect(b.view.queryByText('探索未至之境')).toBeNull()
   })
 
   it('settling phase: a session the list has no row for settles conservatively', () => {
@@ -405,7 +405,7 @@ describe('ConversationRoot resident composer', () => {
     // blank the column for the history round-trip.
     const root = b.view.container.querySelector('[data-phase]')
     expect(root?.getAttribute('data-phase')).toBe('hero')
-    expect(b.view.getByText('探索未知之境')).toBeTruthy()
+    expect(b.view.getByText('探索未至之境')).toBeTruthy()
     expect(b.view.getByRole('textbox')).toBeTruthy()
   })
 
@@ -423,7 +423,7 @@ describe('ConversationRoot resident composer', () => {
     expect(after.value).toBe('kept across flip')
     expect(b.chat.store.getSnapshot().draft).toBe('kept across flip')
     expect(b.view.container.querySelector('[data-conversation-scroll]')?.contains(after)).toBe(true)
-    expect(b.view.queryByText('探索未知之境')).toBeNull()
+    expect(b.view.queryByText('探索未至之境')).toBeNull()
     expect(b.view.getByTestId('view-chat')).toBeTruthy()
   })