Add shuffle and repeat controls with end-of-playlist fix

src/ui/library_tab.py

@@ -256,6 +256,13 @@ class LibraryTab(QWidget):
 
         layout.addLayout(toolbar)
 
+    def playable_row_indices(self) -> list[int]:
+        indices = []
+        for row in range(self.library_table.rowCount()):
+            if not self.library_table.isRowHidden(row):
+                indices.append(row)
+        return indices
+
     def play_track_at_index(self, index: int, start_position_ms: int = 0, auto_play: bool = True):
         if index < 0 or index >= self.library_table.rowCount():
             return