Use small triangle arrow for playlist playing indicator

Replace large arrow with small triangle (▸) to match the style
used for directory indicators before nerd fonts were introduced.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-player"
-version = "0.1.27"
+version = "0.1.29"
 edition = "2021"
 
 [dependencies]

src/ui/mod.rs

@@ -321,12 +321,17 @@ 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() {
+            let mut line_spans = vec![Span::raw(indicator)];
-                Line::from(highlight_search_matches(&filename, &playlist_search_query, is_selected))
+            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