fix(desktop): render the reader's own group lines in the active language

The GroupRow preview and the group transcript spelled the reader as the
English literal 'You' under every locale, so a zh roster read "You: …"
beside otherwise Chinese chrome. Add `group.you` to all four Bot Mode
bundles and use it at the three RENDER sites (bot-row preview,
group-chat-view speaker display and clicked label).

The persisted author marker written into the room log
(group-chat-parts.tsx, group-rounds.ts) stays the English sentinel:
group-activity.ts compares it by value, so translating it in place would
corrupt existing logs and break the comparison. The i18n.ts header now
documents that split.

apps/desktop/src/plugins/hermes-bots/bot-row.test.tsx

@@ -248,4 +248,20 @@ describe('a group row', () => {
     expect(japanese.getByText('ボット3体')).toBeTruthy()
     expect(japanese.getByRole('button', { name: 'crew, ボット3体, 3体中3体が利用可能' })).toBeTruthy()
   })
+
+  it('names the reader in the active language when their line is the latest, without touching the log marker', () => {
+    // 'You' is the persisted author sentinel on the log entry; only its rendering localizes.
+    act(() =>
+      $groupChats.set({ crew: { log: [{ at: 1, from: { kind: 'user', name: 'You' }, text: 'ship it' }], running: false, watermarks: {} } })
+    )
+    locale.current = 'zh'
+
+    const chinese = render(row)
+
+    expect(chinese.getByText('你: ship it')).toBeTruthy()
+    expect(chinese.queryByText(/^You:/)).toBeNull()
+    expect($groupChats.get().crew.log[0].from.name).toBe('You')
+
+    act(() => $groupChats.set({}))
+  })
 })

apps/desktop/src/plugins/hermes-bots/bot-row.tsx

@@ -500,7 +500,7 @@ export function GroupRow({ active, group, members, needsYou, onOpen, onDisband,
   )
 
   const preview = last
-    ? `${last.from?.kind === 'user' ? 'You' : `@${lastHandle}`}: ${stripPreviewMarkdown(last.text) || '…'}`
+    ? `${last.from?.kind === 'user' ? b.group.you : `@${lastHandle}`}: ${stripPreviewMarkdown(last.text) || '…'}`
     : b.group.memberCount(members.length)
 
   const availableMembers = members.filter(member => botSourceStatus(member).available).length

apps/desktop/src/plugins/hermes-bots/group-chat-view.tsx

@@ -991,7 +991,7 @@ export function GroupChatWorkspace({ group, members, onBack, visible = true }: G
         ) || null
 
     const display = isUser
-      ? 'You'
+      ? b.group.you
       : displayName(
           member || {
             name: entry.from.name
@@ -1005,7 +1005,7 @@ export function GroupChatWorkspace({ group, members, onBack, visible = true }: G
     // Clicked: append the gateway name so same-named agents on
     // two connections are tellable apart on demand.
     const label = isUser
-      ? 'You'
+      ? b.group.you
       : revealed
         ? `${display}${entry.from.source ? `-${entry.from.source}` : ''} (@${botHandle(entry.from.name, member || undefined)})`
         : display

apps/desktop/src/plugins/hermes-bots/i18n.ts

@@ -19,9 +19,9 @@
  *  - **Syntax and identifiers**: cron expressions and their examples, React
  *    keys, workspace ids.
  *  - **`'You'`**, the author marker on room-log entries. It is persisted into
- *    the log and compared as a sentinel (`group-activity.ts`), so translating
- *    it in place would break both. Localizing it needs the marker and its
- *    rendering split apart — worth doing, not doable as a rename.
+ *    the log and compared as a sentinel (`group-activity.ts`), so it stays
+ *    English where it is WRITTEN (`group-chat-parts.tsx`, `group-rounds.ts`);
+ *    the places that RENDER the reader's own lines use `group.you` instead.
  *
  * Locales follow kanban: `en` / `ja` / `zh` / `zh-hant`. Arabic falls through
  * the resolution chain (active locale → this plugin's `en` → the key) the
@@ -216,6 +216,8 @@ type BotsMessages = {
     pictureGenerationFailed: string
     nameTaken: (name: string) => string
     memberCount: (count: number) => string
+    /** The reader's own lines in a room: the transcript speaker and the roster preview. */
+    you: string
     /** How many of a room's members are reachable right now. */
     availableCount: (available: number, total: number) => string
     settingsHint: (group: string) => string
@@ -471,6 +473,7 @@ const en: BotsMessages = {
     pictureGenerationFailed: 'Group picture generation failed',
     nameTaken: name => `A group named “${name}” already exists.`,
     memberCount: count => `${count} bots`,
+    you: 'You',
     availableCount: (available, total) => `${available} of ${total} available`,
     settingsHint: group => `Group settings — rename ${group} or set a room picture`,
     settingsLabel: group => `Group settings for ${group}`,
@@ -718,6 +721,7 @@ const ja: BotsMessages = {
     pictureGenerationFailed: 'グループ画像の生成に失敗しました',
     nameTaken: name => `「${name}」という名前のグループはすでに存在します。`,
     memberCount: count => `ボット${count}体`,
+    you: 'あなた',
     availableCount: (available, total) => `${total}体中${available}体が利用可能`,
     settingsHint: group => `グループ設定 — ${group}の名前変更やルーム画像の設定`,
     settingsLabel: group => `${group}のグループ設定`,
@@ -960,6 +964,7 @@ const zh: BotsMessages = {
     pictureGenerationFailed: '群组图片生成失败',
     nameTaken: name => `已存在名为“${name}”的群聊。`,
     memberCount: count => `${count} 个机器人`,
+    you: '你',
     availableCount: (available, total) => `${total} 个中 ${available} 个可用`,
     settingsHint: group => `群聊设置 — 重命名 ${group} 或设置房间图片`,
     settingsLabel: group => `${group} 的群聊设置`,
@@ -1202,6 +1207,7 @@ const zhHant: BotsMessages = {
     pictureGenerationFailed: '群組圖片產生失敗',
     nameTaken: name => `已存在名為「${name}」的群組聊天。`,
     memberCount: count => `${count} 個機器人`,
+    you: '您',
     availableCount: (available, total) => `${total} 個中 ${available} 個可用`,
     settingsHint: group => `群組設定 — 重新命名 ${group} 或設定房間圖片`,
     settingsLabel: group => `${group} 的群組設定`,