Fix cargo fmt formatting and diarize threading test mock

src-tauri/src/commands/transcribe.rs

@@ -33,7 +33,11 @@ pub fn transcribe_file(
     if response.msg_type == "error" {
         return Err(format!(
             "Transcription error: {}",
-            response.payload.get("message").and_then(|v| v.as_str()).unwrap_or("unknown")
+            response
+                .payload
+                .get("message")
+                .and_then(|v| v.as_str())
+                .unwrap_or("unknown")
         ));
     }
 
@@ -42,9 +46,7 @@ pub fn transcribe_file(
 
 /// Download and validate the diarization model via the Python sidecar.
 #[tauri::command]
-pub fn download_diarize_model(
-    hf_token: String,
-) -> Result<Value, String> {
+pub fn download_diarize_model(hf_token: String) -> Result<Value, String> {
     let manager = sidecar();
     manager.ensure_running()?;
 
@@ -116,7 +118,11 @@ pub fn run_pipeline(
     if response.msg_type == "error" {
         return Err(format!(
             "Pipeline error: {}",
-            response.payload.get("message").and_then(|v| v.as_str()).unwrap_or("unknown")
+            response
+                .payload
+                .get("message")
+                .and_then(|v| v.as_str())
+                .unwrap_or("unknown")
         ));
     }