refactor: use unified time formatting method

auditui/app.py

@@ -347,8 +347,8 @@ class Auditui(App):
         progress_percent = min(100.0, max(
             0.0, (chapter_elapsed / chapter_total) * 100.0))
         progress_bar.update(progress=progress_percent)
-        chapter_elapsed_str = self._format_time(chapter_elapsed)
+        chapter_elapsed_str = LibraryClient.format_time(chapter_elapsed)
-        chapter_total_str = self._format_time(chapter_total)
+        chapter_total_str = LibraryClient.format_time(chapter_total)
         progress_info.update(
             f"{chapter_name} | {chapter_elapsed_str} / {chapter_total_str}")
         progress_info.display = True
@@ -361,17 +361,6 @@ class Auditui(App):
         progress_info.display = False
         progress_bar.display = False
 
-    def _format_time(self, seconds: float) -> str:
-        """Format seconds as HH:MM:SS or MM:SS."""
-        total_seconds = int(seconds)
-        hours = total_seconds // 3600
-        minutes = (total_seconds % 3600) // 60
-        secs = total_seconds % 60
-
-        if hours > 0:
-            return f"{hours:02d}:{minutes:02d}:{secs:02d}"
-        return f"{minutes:02d}:{secs:02d}"
-
     def _save_position_periodically(self) -> None:
         """Periodically save playback position."""
         self.playback.update_position_if_needed()

auditui/library.py

@@ -227,3 +227,15 @@ class LibraryClient:
             parts.append(f"{minutes} minute{'s' if minutes != 1 else ''}")
 
         return " ".join(parts) if parts else default_none
+
+    @staticmethod
+    def format_time(seconds: float) -> str:
+        """Format seconds as HH:MM:SS or MM:SS."""
+        total_seconds = int(seconds)
+        hours = total_seconds // 3600
+        minutes = (total_seconds % 3600) // 60
+        secs = total_seconds % 60
+
+        if hours > 0:
+            return f"{hours:02d}:{minutes:02d}:{secs:02d}"
+        return f"{minutes:02d}:{secs:02d}"

auditui/playback.py

@@ -244,7 +244,7 @@ class PlaybackController:
                 if last_position is not None and last_position > 0:
                     start_position = last_position
                     notify(
-                        f"Resuming from {self._format_position(start_position)}")
+                        f"Resuming from {LibraryClient.format_time(start_position)}")
             except Exception:
                 pass
 
@@ -513,17 +513,6 @@ class PlaybackController:
         except Exception:
             pass
 
-    def _format_position(self, seconds: float) -> str:
-        """Format position in seconds as HH:MM:SS or MM:SS."""
-        total_seconds = int(seconds)
-        hours = total_seconds // 3600
-        minutes = (total_seconds % 3600) // 60
-        secs = total_seconds % 60
-
-        if hours > 0:
-            return f"{hours:02d}:{minutes:02d}:{secs:02d}"
-        return f"{minutes:02d}:{secs:02d}"
-
     def update_position_if_needed(self) -> None:
         """Periodically save position if enough time has passed."""
         if not (self.is_playing and self.library_client and self.current_asin):