[PATCH b4 2/2] review-tui: read native_ansi_color for the trailer overlay header

[Konstantin Khorenko <khorenko@virtuozzo.com>]

The review status overlay picks its reverse-video header style off
App.ansi_color, a tri-state that stays None until the theme is
switched at runtime, so it never reflects an ansi theme set via
TEXTUAL_THEME and the header falls back to the wrong style. Read
native_ansi_color instead, with a getattr fallback for Textual
releases that predate the property.

Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
Assisted-by: claude-sonnet-5
---
 src/b4/review_tui/_review_app.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/b4/review_tui/_review_app.py b/src/b4/review_tui/_review_app.py
index e1082e9..da60455 100644
--- a/src/b4/review_tui/_review_app.py
+++ b/src/b4/review_tui/_review_app.py
@@ -924,7 +924,7 @@ from b4.review_tui._modals import (
 
             if has_content:
                 text.append('\n')
-            if self.app.ansi_color:
+            if getattr(self.app, 'native_ansi_color', self.app.ansi_color):
                 text.append(f' {header} ', style=f'bold reverse {colour}')
             else:
                 text.append(f' {header} ', style=f'bold {ts["surface"]} on {colour}')
-- 
2.43.0