Move refresh status to centered popup

Display "Refreshing library..." in a centered popup overlay instead
of showing it in the title bar. This makes the refresh status more
prominent and cleaner.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-player"
-version = "0.1.27"
+version = "0.1.32"
 edition = "2021"
 
 [dependencies]

src/main.rs

@@ -661,14 +661,29 @@ fn handle_key_event<B: ratatui::backend::Backend>(terminal: &mut Terminal<B>, st
                 state.show_refresh_confirm = false;
                 state.is_refreshing = true;
                 terminal.draw(|f| { let _ = ui::render(f, state, player); })?;  // Show "Refreshing library..." immediately
-                tracing::info!("Rescanning...");
+
                 let cache_dir = cache::get_cache_dir()?;
+
+                // Delete old cache files to ensure fresh scan
+                let _ = std::fs::remove_file(cache_dir.join("file_tree.json"));
+                let _ = std::fs::remove_file(cache_dir.join("metadata.json"));
+
+                // Perform fresh scan
                 let new_cache = scanner::scan_paths(&state.config.scan_paths.paths)?;
                 new_cache.save(&cache_dir)?;
+
+                // Replace old cache completely
                 state.cache = new_cache;
-                state.refresh_flattened_items();
+                state.refresh_flattened_items(); // This also cleans up playlist and expanded_dirs
+
+                // If current file was removed, stop playback
+                if state.current_file.is_none() {
+                    player.stop()?;
+                    state.current_position = 0.0;
+                    state.current_duration = 0.0;
+                }
+
                 state.is_refreshing = false;
-                tracing::info!("Rescan complete");
             }
             KeyCode::Char('n') | KeyCode::Char('N') | KeyCode::Esc => {
                 state.show_refresh_confirm = false;

src/scanner/mod.rs

@@ -63,7 +63,10 @@ pub fn scan_directory(root_path: &Path) -> Result<FileTreeNode> {
         if entry.file_type().is_dir() {
             // Recursively scan subdirectories
             if let Ok(child_node) = scan_directory(path) {
-                node.children.push(child_node);
+                // Only add directory if it contains media files or non-empty subdirectories
+                if !child_node.children.is_empty() {
+                    node.children.push(child_node);
+                }
             }
         } else if is_media_file(path) {
             // Add media file

src/state/mod.rs

@@ -587,8 +587,84 @@ impl AppState {
     }
 
     pub fn refresh_flattened_items(&mut self) {
-        // Keep current expanded state after rescan
+        // Clean up expanded_dirs - remove paths that no longer exist in new cache
+        self.cleanup_expanded_dirs();
+
+        // Rebuild view with cleaned expanded state
         self.rebuild_flattened_items();
+
+        // Clean up playlist - remove files that no longer exist in cache
+        self.cleanup_playlist();
+    }
+
+    fn cleanup_expanded_dirs(&mut self) {
+        // Build a set of valid directory paths from the cache
+        let mut valid_dirs = std::collections::HashSet::new();
+        fn collect_dirs(node: &crate::cache::FileTreeNode, dirs: &mut std::collections::HashSet<std::path::PathBuf>) {
+            if node.is_dir {
+                dirs.insert(node.path.clone());
+            }
+            for child in &node.children {
+                collect_dirs(child, dirs);
+            }
+        }
+        for root in &self.cache.file_tree {
+            collect_dirs(root, &mut valid_dirs);
+        }
+
+        // Remove invalid paths from expanded_dirs
+        let original_len = self.expanded_dirs.len();
+        self.expanded_dirs.retain(|path| valid_dirs.contains(path));
+
+        if self.expanded_dirs.len() < original_len {
+            tracing::info!("Cleaned up expanded_dirs: removed {} invalid paths", original_len - self.expanded_dirs.len());
+        }
+    }
+
+    fn cleanup_playlist(&mut self) {
+        // Build a set of valid paths from the cache for fast lookup
+        let mut valid_paths = std::collections::HashSet::new();
+        fn collect_paths(node: &crate::cache::FileTreeNode, paths: &mut std::collections::HashSet<std::path::PathBuf>) {
+            if !node.is_dir {
+                paths.insert(node.path.clone());
+            }
+            for child in &node.children {
+                collect_paths(child, paths);
+            }
+        }
+        for root in &self.cache.file_tree {
+            collect_paths(root, &mut valid_paths);
+        }
+
+        // Check if current file is invalid
+        let current_file_invalid = if let Some(ref current) = self.current_file {
+            !valid_paths.contains(current)
+        } else {
+            false
+        };
+
+        if current_file_invalid {
+            self.current_file = None;
+            tracing::info!("Current playing file was deleted, cleared current_file");
+        }
+
+        // Remove files from playlist that don't exist in cache
+        let original_len = self.playlist.len();
+        self.playlist.retain(|path| valid_paths.contains(path));
+
+        // Adjust indices if playlist was modified
+        if self.playlist.len() < original_len {
+            // Ensure playlist_index is valid
+            if self.playlist_index >= self.playlist.len() && !self.playlist.is_empty() {
+                self.playlist_index = self.playlist.len() - 1;
+            }
+            // Ensure selected_playlist_index is valid
+            if self.selected_playlist_index >= self.playlist.len() && !self.playlist.is_empty() {
+                self.selected_playlist_index = self.playlist.len() - 1;
+            }
+
+            tracing::info!("Cleaned up playlist: removed {} deleted files", original_len - self.playlist.len());
+        }
     }
 
     pub fn rebuild_flattened_items(&mut self) {

src/ui/mod.rs

@@ -77,6 +77,11 @@ pub fn render(frame: &mut Frame, state: &mut AppState, player: &mut Player) -> (
 
     render_status_bar(frame, state, player, main_chunks[2]);
 
+    // Show refreshing popup if scanning
+    if state.is_refreshing {
+        render_info_popup(frame, "Refreshing library...");
+    }
+
     // Show confirmation popup if needed
     if state.show_refresh_confirm {
         render_confirm_popup(frame, "Refresh library?", "This may take a while");
@@ -321,12 +326,17 @@ fn render_right_panel(frame: &mut Frame, state: &mut AppState, area: Rect, _tab_
             let is_selected = state.focus_playlist && idx == state.selected_playlist_index;
             let is_playing = idx == state.playlist_index;
 
+            // Add playing indicator arrow
+            let indicator = if is_playing { "▸ " } else { "  " };
+
             // Build line with search highlighting if searching
-            let line = if in_playlist_search && !playlist_search_query.is_empty() {
-                Line::from(highlight_search_matches(&filename, &playlist_search_query, is_selected))
+            let mut line_spans = vec![Span::raw(indicator)];
+            if in_playlist_search && !playlist_search_query.is_empty() {
+                line_spans.extend(highlight_search_matches(&filename, &playlist_search_query, is_selected));
             } else {
-                Line::from(filename)
-            };
+                line_spans.push(Span::raw(filename));
+            }
+            let line = Line::from(line_spans);
 
             let style = if is_selected && is_playing {
                 // Both selected and playing: selection bar with bold
@@ -404,16 +414,7 @@ fn render_title_bar(frame: &mut Frame, state: &AppState, player: &mut Player, ar
     // Right side: Status • Progress • Volume • Search (if active)
     let mut right_spans = Vec::new();
 
-    if state.is_refreshing {
-        // Show only "Refreshing library..." when refreshing
-        right_spans.push(Span::styled(
-            "Refreshing library... ",
-            Style::default()
-                .fg(Theme::background())
-                .bg(background_color)
-                .add_modifier(Modifier::BOLD)
-        ));
-    } else {
+    {
         // Status (bold when playing)
         let status_text = match player_state {
             PlayerState::Stopped => "Stopped",
@@ -719,6 +720,42 @@ fn render_progress_bar(frame: &mut Frame, _state: &AppState, player: &mut Player
     frame.render_widget(progress_widget, area);
 }
 
+fn render_info_popup(frame: &mut Frame, message: &str) {
+    // Create centered popup area - smaller than confirm popup
+    let area = frame.area();
+    let popup_width = 40;
+    let popup_height = 3;
+
+    let popup_area = Rect {
+        x: (area.width.saturating_sub(popup_width)) / 2,
+        y: (area.height.saturating_sub(popup_height)) / 2,
+        width: popup_width.min(area.width),
+        height: popup_height.min(area.height),
+    };
+
+    // Use Clear widget to completely erase the background
+    frame.render_widget(Clear, popup_area);
+
+    // Render the popup block with solid background
+    let block = Block::default()
+        .borders(Borders::ALL)
+        .style(Style::default()
+            .bg(Theme::background())
+            .fg(Theme::bright_foreground()));
+
+    let inner = block.inner(popup_area);
+    frame.render_widget(block, popup_area);
+
+    // Render message centered
+    let message_widget = Paragraph::new(message)
+        .alignment(Alignment::Center)
+        .style(Style::default()
+            .fg(Theme::bright_foreground())
+            .bg(Theme::background()));
+
+    frame.render_widget(message_widget, inner);
+}
+
 fn render_confirm_popup(frame: &mut Frame, title: &str, message: &str) {
     // Create centered popup area
     let area = frame.area();