fix(audio): 修复音频设备选择逻辑中的边界检查

- 更新设备ID的边界检查逻辑，确保在选择音频设备时不会超出设备列表范围，提升稳定性。

Author: huangjunsen0406

src/audio_codecs/audio_codec.py

@@ -88,7 +88,7 @@ def _auto_pick_device(self, kind: str) -> Optional[int]:
             if "WASAPI" in name:
                 key = "default_input_device" if kind == "input" else "default_output_device"
                 cand = ha.get(key, -1)
-                if isinstance(cand, int) and cand >= 0:
+                if isinstance(cand, int) and 0 <= cand < len(devices):
                     d = devices[cand]
                     if (kind == "input" and d["max_input_channels"] > 0) or (
                         kind == "output" and d["max_output_channels"] > 0