chore: update whisper-rs to 0.15.1 to fix macOS ARM build (#7)

- Update whisper-rs: 0.14.4 → 0.15.1
- Update whisper-rs-sys: 0.13.1 → 0.14.1
- Adapt to API changes:
  - full_n_segments() now returns i32 directly
  - full_get_segment_text() replaced with get_segment()
  - WhisperSegment implements Display for text extraction

Fixes macOS ARM build failure in v0.4.0 release (i8mm CPU feature issue)

Refs #3

Author: wilcorrea

apps/tauri/src-tauri/Cargo.lock

@@ -26,7 +26,7 @@ notify = "7"
 tauri-plugin-updater = "2"
 cpal = "0.15"
 rubato = "0.16"
-whisper-rs = "0.14"
+whisper-rs = "0.15"
 reqwest = { version = "0.12", features = ["stream"] }
 tokio = { version = "1", features = ["fs"] }
 futures-util = "0.3"

apps/tauri/src-tauri/Cargo.toml

@@ -28,16 +28,13 @@ impl WhisperTranscriber {
             .full(params, audio)
             .map_err(|e| format!("Transcription failed: {}", e))?;
 
-        let num_segments = state
-            .full_n_segments()
-            .map_err(|e| format!("Failed to get segments: {}", e))?;
+        let num_segments = state.full_n_segments();
 
         let mut text = String::new();
         for i in 0..num_segments {
-            let segment = state
-                .full_get_segment_text(i)
-                .map_err(|e| format!("Failed to get segment {i}: {e}"))?;
-            text.push_str(&segment);
+            if let Some(segment) = state.get_segment(i) {
+                text.push_str(&format!("{}", segment));
+            }
         }
         Ok(text.trim().to_string())
     }