valgrind clean

src/stt.zig

@@ -955,6 +955,9 @@ pub const SttSession = struct {
                 self.parseVoskResult(result_str) catch |err| {
                     self.options.event_handler.onError(err, "Failed to parse Vosk result");
                 };
+
+                // Reset recognizer after getting final result to clear internal buffers
+                c.vosk_recognizer_reset(self.vosk_recognizer);
             }
         } else if (accept_result == 0) {
             // Partial result available (optional - for real-time feedback)
@@ -1286,6 +1289,9 @@ pub const SttSession = struct {
         // Free processing buffer
         self.allocator.free(self.processing_buffer);
 
+        // Clean up ALSA global configuration cache
+        _ = c.snd_config_update_free_global();
+
         // Mark as uninitialized
         self.initialized = false;
     }