feat(feishu): enhance #2791 with cardkit streaming + ASR fixes

- rewrite streaming reply to official cardkit v2.0 API (default on, auto-fallback)
- fix Whisper hallucination: bump ASR sample rate to 16k, pass language=zh
- fix lock-over-IO and tmp file cleanup from #2791
- drop deprecated feishu_bot_name; quiet unknown-key warnings
- docs: cardkit permission and feishu_stream_reply usage

config-template.json

@@ -24,8 +24,7 @@
   "linkai_app_code": "",
   "feishu_app_id": "",
   "feishu_app_secret": "",
-  "feishu_bot_name": "",
-  "feishu_stream_reply": false,
+  "feishu_stream_reply": true,
   "dingtalk_client_id": "",
   "dingtalk_client_secret": "",
   "wecom_bot_id": "",