style(recording): rustfmt audio saver files to satisfy fmt gate

frontend/src-tauri/src/audio/incremental_saver.rs

@@ -488,7 +488,10 @@ mod tests {
     #[test]
     fn concat_escape_handles_single_quotes() {
         // A path with no quotes is unchanged.
-        assert_eq!(ffmpeg_concat_escape("C:/meetings/audio.mp4"), "C:/meetings/audio.mp4");
+        assert_eq!(
+            ffmpeg_concat_escape("C:/meetings/audio.mp4"),
+            "C:/meetings/audio.mp4"
+        );
         // A single quote is escaped as '\'' so the concat line stays valid.
         assert_eq!(
             ffmpeg_concat_escape("C:/meetings/Karan's Review/audio.mp4"),

frontend/src-tauri/src/audio/recording_saver.rs

@@ -450,7 +450,10 @@ impl RecordingSaver {
             // Even without audio, finalize the on-disk metadata so transcript-only
             // recordings are not left permanently in the "recording" state.
             if let Err(e) = self.finalize_metadata_status(recording_duration) {
-                warn!("Transcript-only recording saved, but metadata finalization failed: {}", e);
+                warn!(
+                    "Transcript-only recording saved, but metadata finalization failed: {}",
+                    e
+                );
             }
             info!("✅ Transcripts and metadata already saved incrementally");
             return Ok(None);