Fix tab navigation to respect user choice and prevent jumping back to localhost

- Add user_navigated_away flag to track manual navigation
- Only auto-switch to localhost if user hasn't manually navigated away
- Reset flag when host disconnects to allow auto-selection
- Preserves user's tab navigation choices while still prioritizing localhost initially

dashboard/src/ui/mod.rs

@@ -57,6 +57,8 @@ pub struct TuiApp {
     host_index: usize,
     /// Should quit application
     should_quit: bool,
+    /// Track if user manually navigated away from localhost
+    user_navigated_away: bool,
 }
 
 impl TuiApp {
@@ -67,6 +69,7 @@ impl TuiApp {
             available_hosts: Vec::new(),
             host_index: 0,
             should_quit: false,
+            user_navigated_away: false,
         }
     }
 
@@ -159,22 +162,23 @@ impl TuiApp {
 
         self.available_hosts = sorted_hosts;
 
-        // Always prioritize localhost if it becomes available, even if another host is selected
+        // Prioritize localhost if it becomes available, but respect user navigation
         let localhost = gethostname::gethostname().to_string_lossy().to_string();
         if !self.available_hosts.is_empty() {
-            if self.available_hosts.contains(&localhost) {
+            if self.available_hosts.contains(&localhost) && !self.user_navigated_away {
-                // Localhost is available - always switch to it
+                // Localhost is available and user hasn't navigated away - switch to it
                 self.current_host = Some(localhost);
                 self.host_index = 0; // localhost is always first in sorted_hosts
             } else if self.current_host.is_none() {
-                // No localhost, no current host - select first available
+                // No current host - select first available (which is localhost if available)
                 self.current_host = Some(self.available_hosts[0].clone());
                 self.host_index = 0;
             } else if let Some(ref current) = self.current_host {
                 if !self.available_hosts.contains(current) {
-                    // Current host disconnected - select first available
+                    // Current host disconnected - select first available and reset navigation flag
                     self.current_host = Some(self.available_hosts[0].clone());
                     self.host_index = 0;
+                    self.user_navigated_away = false; // Reset since we're forced to switch
                 } else if let Some(index) = self.available_hosts.iter().position(|h| h == current) {
                     // Update index for current host
                     self.host_index = index;
@@ -227,6 +231,17 @@ impl TuiApp {
         }
 
         self.current_host = Some(self.available_hosts[self.host_index].clone());
+        
+        // Check if user navigated away from localhost
+        let localhost = gethostname::gethostname().to_string_lossy().to_string();
+        if let Some(ref current) = self.current_host {
+            if current != &localhost {
+                self.user_navigated_away = true;
+            } else {
+                self.user_navigated_away = false; // User navigated back to localhost
+            }
+        }
+        
         info!("Switched to host: {}", self.current_host.as_ref().unwrap());
     }