feat(mobile-next): 补齐语音未听红点、录音浮层与 50-60s 时限

按 B-187 打回修复 4.3/4.4 阻塞项，输入框与按住说话改用 searchBg。

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

mobile-next/lib/company/brand/apply_official_styles.dart

@@ -17,7 +17,12 @@ void applyOfficialStylesFromTokens() {
   Styles.c_F4F5F7 = AppColors.chatBg;
   Styles.c_F8F9FA = AppColors.pageBg;
   Styles.c_F0F2F6 = AppColors.chatBg;
+  Styles.c_F2F3F5 = AppColors.searchBg;
   Styles.c_F2F8FF = AppColors.primaryActive;
+  Styles.durationOverlay = AppDuration.overlay;
+  Styles.durationOverlaySwitch = AppDuration.overlaySwitch;
+  Styles.reduceMotion = AppMotion.reduce;
+  Styles.motionOf = AppMotion.of;
   Styles.c_18E875 = AppColors.success;
   Styles.c_FFB300 = AppColors.warning;
   Styles.c_6085B1 = AppColors.avatarGray;
@@ -91,10 +96,18 @@ void applyOfficialStylesFromTokens() {
     color: AppColors.danger,
     fontSize: AppFont.body,
   );
+  Styles.ts_FF381F_12sp = TextStyle(
+    color: AppColors.danger,
+    fontSize: AppFont.small,
+  );
   Styles.ts_FF381F_10sp = TextStyle(
     color: AppColors.danger,
     fontSize: AppFont.small,
   );
+  Styles.ts_FFB300_12sp = TextStyle(
+    color: AppColors.warning,
+    fontSize: AppFont.small,
+  );
   Styles.ts_6085B1_17sp_medium = TextStyle(
     color: AppColors.avatarGray,
     fontSize: AppFont.body,