Show refreshing status during library scan

- Add is_refreshing flag to AppState
- Display 'Refreshing library...' in status panel during scan
- Note: scan is currently blocking, message may be brief
- Infrastructure ready for future async scanning

src/main.rs

@@ -178,12 +178,14 @@ async fn handle_key_event(state: &mut AppState, player: &mut player::Player, key
             }
         }
         KeyCode::Char('r') => {
+            state.is_refreshing = true;
             tracing::info!("Rescanning...");
             let cache_dir = cache::get_cache_dir()?;
             let new_cache = scanner::scan_paths(&state.config.scan_paths.paths)?;
             new_cache.save(&cache_dir)?;
             state.cache = new_cache;
             state.refresh_flattened_items();
+            state.is_refreshing = false;
             tracing::info!("Rescan complete");
         }
         _ => {}

src/state/mod.rs

@@ -26,6 +26,7 @@ pub struct AppState {
     pub marked_files: HashSet<PathBuf>,
     pub playlist: Vec<PathBuf>,
     pub playlist_index: usize,
+    pub is_refreshing: bool,
 }
 
 #[derive(Debug, Clone)]
@@ -58,6 +59,7 @@ impl AppState {
             marked_files: HashSet::new(),
             playlist: Vec::new(),
             playlist_index: 0,
+            is_refreshing: false,
         }
     }
 

src/ui/mod.rs

@@ -65,11 +65,15 @@ fn render_status_panel(frame: &mut Frame, state: &AppState, area: Rect) {
         ])
         .split(area);
 
-    // Player state
-    let state_text = match state.player_state {
-        PlayerState::Stopped => "Stopped",
-        PlayerState::Playing => "Playing",
-        PlayerState::Paused => "Paused",
+    // Player state or refreshing status
+    let state_text = if state.is_refreshing {
+        "Refreshing library..."
+    } else {
+        match state.player_state {
+            PlayerState::Stopped => "Stopped",
+            PlayerState::Playing => "Playing",
+            PlayerState::Paused => "Paused",
+        }
     };
     let state_widget = Paragraph::new(state_text)
         .block(Block::default().borders(Borders::ALL).title("Status"))