fix(tui): use actual tmux prefix in welcome dialog and status bar

src/tmux/mod.rs

@@ -11,6 +11,7 @@ pub use session::Session;
 pub use status_bar::{get_session_info_for_current, get_status_for_current_session};
 pub use status_detection::detect_status_from_content;
 pub use terminal_session::{ContainerTerminalSession, TerminalSession};
+pub use utils::tmux_prefix_display;
 
 #[cfg(any(test, feature = "test-support"))]
 #[doc(hidden)]

src/tmux/status_bar.rs

@@ -63,11 +63,12 @@ pub fn apply_status_bar(
     set_session_option(session_name, "status-right-length", "80")?;
 
     set_session_option(session_name, "status-style", &format!("bg={bg},fg={fg}"))?;
+    let prefix = crate::tmux::utils::tmux_prefix_display();
     set_session_option(
         session_name,
         "status-left",
         &format!(
-            " #[fg={accent},bold]#S#[fg={fg},nobold] \u{2502} #[fg={hint}]Ctrl+b d#[fg={hint}] to detach ",
+            " #[fg={accent},bold]#S#[fg={fg},nobold] \u{2502} #[fg={hint}]{prefix} d#[fg={hint}] to detach ",
         ),
     )?;
     set_session_option(session_name, "status-left-length", "50")?;

src/tmux/utils.rs

@@ -158,6 +158,30 @@ pub fn is_pane_running_shell(session_name: &str) -> bool {
         .unwrap_or(false)
 }
 
+/// Returns the tmux prefix key formatted for display (e.g. "Ctrl+a", "Ctrl+b").
+/// Reads `tmux show-option -gv prefix`; falls back to "Ctrl+b" if tmux is
+/// unavailable or the option can't be parsed.
+pub fn tmux_prefix_display() -> String {
+    let raw = Command::new("tmux")
+        .args(["show-option", "-gv", "prefix"])
+        .output()
+        .ok()
+        .and_then(|o| String::from_utf8(o.stdout).ok())
+        .map(|s| s.trim().to_string())
+        .unwrap_or_default();
+
+    // tmux reports prefix as e.g. "C-b", "C-a", "M-b". Convert to display form.
+    if let Some(key) = raw.strip_prefix("C-") {
+        format!("Ctrl+{}", key.to_uppercase())
+    } else if let Some(key) = raw.strip_prefix("M-") {
+        format!("Alt+{}", key.to_uppercase())
+    } else if !raw.is_empty() {
+        raw
+    } else {
+        "Ctrl+b".to_string()
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

src/tui/dialogs/welcome.rs

@@ -42,34 +42,33 @@ impl WelcomeDialog {
             .constraints([Constraint::Min(1), Constraint::Length(2)])
             .split(inner);
 
+        let prefix = crate::tmux::tmux_prefix_display();
+        let detach_key = format!("  {} then d   ", prefix);
+        let scroll_key = format!("  {} then [   ", prefix);
+        let note = format!("Note: Press {}, release, THEN press the next key.", prefix);
+
         let content = vec![
             Line::from("When you attach or start an AOE session, "),
             Line::from("you're working directly in tmux."),
             Line::from("Essential tmux commands:"),
             Line::from(""),
             Line::from(vec![
-                Span::styled(
-                    "  Ctrl+b then d   ",
-                    Style::default().fg(theme.title).bold(),
-                ),
+                Span::styled(detach_key, Style::default().fg(theme.title).bold()),
                 Span::styled(
                     "Detach (exit without stopping)",
                     Style::default().fg(theme.text),
                 ),
             ]),
             Line::from(vec![
-                Span::styled(
-                    "  Ctrl+b then [   ",
-                    Style::default().fg(theme.title).bold(),
-                ),
+                Span::styled(scroll_key, Style::default().fg(theme.title).bold()),
                 Span::styled(
                     "Scroll mode (arrows to scroll, q to exit)",
                     Style::default().fg(theme.text),
                 ),
             ]),
             Line::from(""),
             Line::from(Span::styled(
-                "Note: Press Ctrl+b, release, THEN press the next key.",
+                note,
                 Style::default().fg(theme.hint).italic(),
             )),
             Line::from(""),