refactor(wechat_kf): rename channel from wechatcom_kf and split corp_id

Rename the WeCom customer-service channel and give it its own corp_id
field so users no longer have to share `wechatcom_corp_id` with the
self-built WeCom app channel.

Renames (channel-side):
- channel type / const: wechatcom_kf -> wechat_kf
- package dir: channel/wechatcom_kf/ -> channel/wechat_kf/
- python files / classes: WechatComKf* -> WechatKf*
- config keys: wechatcom_kf_{secret,token,aes_key,port} ->
  wechat_kf_{secret,token,aes_key,port}; new wechat_kf_corp_id
- env vars: WECHATCOM_KF_* -> WECHAT_KF_*; new WECHAT_KF_CORP_ID
- log prefix / cursor file: [wechatcom_kf] -> [wechat_kf]
- web console CHANNEL_DEFS key + startup log line

Renames (docs):
- docs/channels/wecom-kf.mdx -> docs/channels/wechat-kf.mdx (zh/en/ja)
- update docs.json sidebar entries and all field names inside the docs

In addition, the Web Console "微信客服" entry now exposes its own
Corp ID field instead of reusing the wechatcom_app one, and includes
the screenshot of the visual config in the channel guide.

Web Console onboarding section is added (Tabs: Web Console / config
file) and the local URL `http://127.0.0.1:9899/` parenthetical is
dropped for consistency with other channel docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

config.py

@@ -151,12 +151,12 @@ available_setting = {
     "wechatcomapp_secret": "",  # 企业微信app的secret
     "wechatcomapp_agent_id": "",  # 企业微信app的agent_id
     "wechatcomapp_aes_key": "",  # 企业微信app的aes_key
-    # 微信客服(wechatcom_kf)的配置
-    # 注意: 微信客服与企微自建应用是两套不同的应用,共用 corp_id,但 secret/token/aes_key 各自独立
-    "wechatcom_kf_token": "",  # 微信客服回调token
-    "wechatcom_kf_port": 9888,  # 微信客服回调服务端口
-    "wechatcom_kf_secret": "",  # 微信客服应用的secret
-    "wechatcom_kf_aes_key": "",  # 微信客服回调aes_key
+    # 微信客服(wechat_kf)的配置
+    "wechat_kf_corp_id": "",  # 微信客服所在企业的corp_id
+    "wechat_kf_token": "",  # 微信客服回调token
+    "wechat_kf_port": 9888,  # 微信客服回调服务端口
+    "wechat_kf_secret": "",  # 微信客服应用的secret
+    "wechat_kf_aes_key": "",  # 微信客服回调aes_key
     # 飞书配置
     "feishu_port": 80,  # 飞书bot监听端口，仅webhook模式需要
     "feishu_app_id": "",  # 飞书机器人应用APP Id
@@ -180,7 +180,7 @@ available_setting = {
     # chatgpt指令自定义触发词
     "clear_memory_commands": ["#清除记忆"],  # 重置会话指令，必须以#开头
     # channel配置
-    "channel_type": "",  # 通道类型，支持多渠道同时运行。单个: "feishu"，多个: "feishu, dingtalk" 或 ["feishu", "dingtalk"]。可选值: web,feishu,dingtalk,wecom_bot,weixin,wechatmp,wechatmp_service,wechatcom_app,wechatcom_kf
+    "channel_type": "",  # 通道类型，支持多渠道同时运行。单个: "feishu"，多个: "feishu, dingtalk" 或 ["feishu", "dingtalk"]。可选值: web,feishu,dingtalk,wecom_bot,weixin,wechatmp,wechatmp_service,wechatcom_app,wechat_kf
     "web_console": True,  # 是否自动启动Web控制台（默认启动）。设为False可禁用
     "subscribe_msg": "",  # 订阅消息, 支持: wechatmp, wechatmp_service, wechatcom_app
     "debug": False,  # 是否开启debug模式，开启后会打印更多日志
@@ -417,9 +417,10 @@ def load_config():
         "wechatcomapp_agent_id": "WECHATCOMAPP_AGENT_ID",
         "wechatcomapp_secret": "WECHATCOMAPP_SECRET",
         "wechatcom_corp_id": "WECHATCOM_CORP_ID",
-        "wechatcom_kf_secret": "WECHATCOM_KF_SECRET",
-        "wechatcom_kf_token": "WECHATCOM_KF_TOKEN",
-        "wechatcom_kf_aes_key": "WECHATCOM_KF_AES_KEY",
+        "wechat_kf_corp_id": "WECHAT_KF_CORP_ID",
+        "wechat_kf_secret": "WECHAT_KF_SECRET",
+        "wechat_kf_token": "WECHAT_KF_TOKEN",
+        "wechat_kf_aes_key": "WECHAT_KF_AES_KEY",
         "qq_app_id": "QQ_APP_ID",
         "qq_app_secret": "QQ_APP_SECRET",
         "weixin_token": "WEIXIN_TOKEN",