fix(mobile): remount the Android chat title when its theme or name changes

apps/mobile/src/ui/chat/conversation-screen.tsx

@@ -879,7 +879,14 @@ function ChatConversation({
               }
             : {
                 headerTitleAlign: 'left' as const,
-                headerTitle: () => title,
+                headerTitle: () => (
+                  <View
+                    key={`${theme.scheme}:${theme.fontScale}:${bot?.displayName ?? channel?.name ?? ''}`}
+                    style={{ maxWidth: windowWidth - (theme.touch + space.x5) * 3 }}
+                  >
+                    {title}
+                  </View>
+                ),
                 headerRight: () => trailing,
                 ...(canGoBack && !floatingHeader ? {} : { headerLeft: () => back }),
               }),

changes/2416-android-chat-title.md

@@ -0,0 +1,11 @@
+---
+section: Fixed
+---
+
+## en
+
+- On Android, the Bot's name in the chat header no longer shrinks to "M…" after switching between light and dark while the chat is open ([#2416](https://github.com/BotHarness/DeepSeekBot/pull/2416)).
+
+## zh
+
+- Android 聊天页里切换浅色/深色主题后，顶部的 Bot 名称不会再被截成 “M…”（[#2416](https://github.com/BotHarness/DeepSeekBot/pull/2416)）。