docs: fix inaccuracies, add translations, and expand channel docs (#1837)

## Config field fixes (cross-verified against Go source)
- MaixCam: server_address → host + port
- IRC: use_tls → tls, channels_to_join → channels (all 6 languages)
- WeCom AI Bot: callback port 18791 → 18790
- credential_encryption: base_url → api_base, add required model field,
  remove incorrect passphrase-only mode docs
- providers.md: agents.defaults.model → model_name (×4), remove
  non-existent session.backlog_limit
- migration guide, troubleshooting: agents.defaults.model → model_name
- ANTIGRAVITY_AUTH: fix file path, Go 1.21 → 1.25, model → model_name
- spawn-tasks: fix truncated file, add Heartbeat introduction
- tools_configuration: add Tavily/SearXNG/GLMSearch, exec allow_remote/
  timeout_seconds/custom_allow_patterns, cron allow_command, skills
  github/search_cache, clawhub timeout/max_zip_size/max_response_size
- configuration: fix builtin skills path (build-time embedded, not cwd),
  HEARTBEAT.md marked auto-generated

## Broken link fixes (15 total)
- chat-apps.md: WeCom/Matrix links with wrong relative paths
- providers.md: migration link with extra docs/ prefix
- hardware-compatibility.md: README links with wrong depth (all 5 langs)
- chat-apps.md: WhatsApp dead links → anchor links (zh/ja)

## Getting-started accuracy
- README (all 6 langs): add picoclaw.io as recommended download,
  add missing picoclaw model CLI command
- docker.md: clarify first-run trigger condition (all 6 langs)
- configuration.md: fix builtin skills path description (all 6 langs)

## QQ channel
- Add quick setup via q.qq.com/qqbot/openclaw (one-click bot creation)
- Add manual setup as fallback (all 6 languages)

## Feishu channel
- Update setup flow: WebSocket/SDK mode, no webhook URL needed
- Preserve Lark international domain note (all 6 languages)

## chat-apps.md
- Add Feishu, Slack, IRC, OneBot detail sections (all 6 languages)
- Add MaixCam section to ja/fr/pt-br/vi
- Fix all channel doc links to point to correct language version

## New translations (25 files, 5 docs × 5 languages)
debug.md, credential_encryption.md, hardware-compatibility.md,
ANTIGRAVITY_AUTH.md, ANTIGRAVITY_USAGE.md → zh/ja/fr/pt-br/vi

## Channel docs (6 languages each, 60 new files)
telegram, discord, qq, feishu, maixcam, dingtalk, line, slack, onebot,
wecom/wecom_aibot, wecom/wecom_app, wecom/wecom_bot

Co-authored-by: BeaconCat <BeaconCat@users.noreply.github.com>

docs/channels/feishu/README.zh.md

@@ -1,3 +1,5 @@
+> 返回 [README](../../../README.zh.md)
+
 # 飞书
 
 飞书（国际版名称：Lark）是字节跳动旗下的企业协作平台。它通过事件驱动的 Webhook 同时支持中国和全球市场。
@@ -33,9 +35,16 @@
 
 ## 设置流程
 
-1. 前往 [飞书开放平台](https://open.feishu.cn/)（国际版用户请前往 [Lark 开放平台](https://open.larksuite.com/)）创建应用程序
-2. 获取 App ID 和 App Secret
-3. 配置事件订阅和Webhook URL
-4. 设置加密(可选,生产环境建议启用)
-5. 将 App ID、App Secret、Encrypt Key 和 Verification Token(如果启用加密) 填入配置文件中
-6. 自定义你希望 PicoClaw react 你消息时的表情（可选, Reference URL: [Feishu Emoji List](https://open.larkoffice.com/document/server-docs/im-v1/message-reaction/emojis-introduce))
+1. 前往 [飞书开放平台](https://open.feishu.cn/)（国际版用户请前往 [Lark 开放平台](https://open.larksuite.com/)）创建应用
+2. 在应用设置中启用**机器人**能力
+3. 创建版本并发布应用（应用发布后配置才会生效）
+4. 获取 **App ID**（以 `cli_` 开头）和 **App Secret**
+5. 将 App ID 和 App Secret 填入 PicoClaw 配置文件
+6. 运行 `picoclaw gateway` 启动服务
+7. 在飞书中搜索机器人名称，开始对话
+
+> PicoClaw 使用 WebSocket/SDK 模式连接飞书，无需配置公网回调地址或 Webhook URL。
+>
+> `encrypt_key` 和 `verification_token` 为可选项，生产环境建议启用事件加密。
+>
+> 自定义表情参考：[飞书表情列表](https://open.larkoffice.com/document/server-docs/im-v1/message-reaction/emojis-introduce)