fix(tui): unbreak CI tests after Act vocabulary pass

- Help backspace tests: filter near-miss uses modez (yolo no longer visible).
- Config view: header_lines accounts for ConfigSubtitle so status stays on-screen.
- Hotbar zh-Hant chrome expects Act mode label instead of Agent.

Author: Hmbown

crates/tui/src/tui/hotbar/setup.rs

@@ -1180,7 +1180,7 @@ mod tests {
             "命令",
             "就緒",
             "槽位",
-            "Agent模式",
+            "Act模式",
             "命令面板",
             "切換側邊欄",
         ] {

crates/tui/src/tui/views/help.rs

@@ -596,7 +596,9 @@ mod tests {
     #[test]
     fn backspace_widens_match_set() {
         let mut view = HelpView::new();
-        type_filter(&mut view, "yolox");
+        // Near-miss against the still-visible mode vocabulary so the last
+        // character removes a unique miss and broadens the match set.
+        type_filter(&mut view, "modez");
         let narrow = view.filtered.len();
         view.handle_key(key(KeyCode::Backspace));
         let wider = view.filtered.len();
@@ -609,7 +611,7 @@ mod tests {
     #[test]
     fn ctrl_h_widens_match_set() {
         let mut view = HelpView::new();
-        type_filter(&mut view, "yolox");
+        type_filter(&mut view, "modez");
         let narrow = view.filtered.len();
         view.handle_key(KeyEvent::new(KeyCode::Char('h'), KeyModifiers::CONTROL));
         let wider = view.filtered.len();

crates/tui/src/tui/views/mod.rs

@@ -2178,7 +2178,8 @@ impl ModalView for ConfigView {
             (lines, self.tr(MessageId::ConfigEditFooter).to_string())
         } else {
             let content_height = usize::from(inner.height);
-            let header_lines = 5usize;
+            // Title, subtitle, search, blank, column headers, separator.
+            let header_lines = 6usize;
             let bottom_lines = 1usize;
             // The action footer now lives inside the modal body (reserved by
             // `render_modal_text_footer` below) rather than on the border, so it