fix: only set loop_count from record_pos when transitioning from record state

Co-authored-by: aider (deepseek/deepseek-reasoner) <aider@aider.chat>

src/looper.c

@@ -75,7 +75,7 @@ int process_callback(jack_nframes_t nframes, void *arg) {
         channels[c].loop_count = 0;
         break;
       case STATE_LOOPING:
-        if (channels[c].record_pos > 0)
+        if (channels[c].prev_state == STATE_RECORD && channels[c].record_pos > 0)
           channels[c].loop_count = channels[c].record_pos;
         channels[c].playback_pos = 0;
         break;