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/onebot/README.fr.md

@@ -0,0 +1,33 @@
+> Retour au [README](../../../README.fr.md)
+
+# OneBot
+
+OneBot est un standard de protocole ouvert pour les bots QQ, fournissant une interface unifiée pour diverses implémentations de bots QQ (par exemple go-cqhttp, Mirai). Il utilise WebSocket pour la communication.
+
+## Configuration
+
+```json
+{
+  "channels": {
+    "onebot": {
+      "enabled": true,
+      "ws_url": "ws://localhost:8080",
+      "access_token": "",
+      "allow_from": []
+    }
+  }
+}
+```
+
+| Champ        | Type   | Requis | Description                                                          |
+| ------------ | ------ | ------ | -------------------------------------------------------------------- |
+| enabled      | bool   | Oui    | Activer ou non le canal OneBot                                       |
+| ws_url       | string | Oui    | URL WebSocket du serveur OneBot                                      |
+| access_token | string | Non    | Jeton d'accès pour la connexion au serveur OneBot                    |
+| allow_from   | array  | Non    | Liste blanche d'ID utilisateurs ; vide signifie tous les utilisateurs |
+
+## Procédure de configuration
+
+1. Déployez une implémentation compatible OneBot (par exemple napcat)
+2. Configurez l'implémentation OneBot pour activer le service WebSocket et définir un jeton d'accès (si nécessaire)
+3. Renseignez l'URL WebSocket et le jeton d'accès dans le fichier de configuration

docs/channels/onebot/README.ja.md

@@ -0,0 +1,33 @@
+> [README](../../../README.ja.md) に戻る
+
+# OneBot
+
+OneBot は QQ ボット向けのオープンプロトコル標準で、複数の QQ ボット実装（例: go-cqhttp、Mirai）に統一されたインターフェースを提供します。通信には WebSocket を使用します。
+
+## 設定
+
+```json
+{
+  "channels": {
+    "onebot": {
+      "enabled": true,
+      "ws_url": "ws://localhost:8080",
+      "access_token": "",
+      "allow_from": []
+    }
+  }
+}
+```
+
+| フィールド   | 型     | 必須   | 説明                                                             |
+| ------------ | ------ | ------ | ---------------------------------------------------------------- |
+| enabled      | bool   | はい   | OneBot チャンネルを有効にするかどうか                            |
+| ws_url       | string | はい   | OneBot サーバーの WebSocket URL                                  |
+| access_token | string | いいえ | OneBot サーバーへの接続に使用するアクセストークン                |
+| allow_from   | array  | いいえ | ユーザーIDのホワイトリスト。空の場合は全ユーザーを許可           |
+
+## セットアップ手順
+
+1. OneBot 互換の実装（例: napcat）をデプロイする
+2. OneBot 実装で WebSocket サービスを有効にし、アクセストークンを設定する（必要な場合）
+3. WebSocket URL とアクセストークンを設定ファイルに入力する

docs/channels/onebot/README.md

@@ -0,0 +1,33 @@
+> Back to [README](../../../README.md)
+
+# OneBot
+
+OneBot is an open protocol standard for QQ bots, providing a unified interface for various QQ bot implementations (e.g. go-cqhttp, Mirai). It uses WebSocket for communication.
+
+## Configuration
+
+```json
+{
+  "channels": {
+    "onebot": {
+      "enabled": true,
+      "ws_url": "ws://localhost:8080",
+      "access_token": "",
+      "allow_from": []
+    }
+  }
+}
+```
+
+| Field        | Type   | Required | Description                                                      |
+| ------------ | ------ | -------- | ---------------------------------------------------------------- |
+| enabled      | bool   | Yes      | Whether to enable the OneBot channel                             |
+| ws_url       | string | Yes      | WebSocket URL of the OneBot server                               |
+| access_token | string | No       | Access token for connecting to the OneBot server                 |
+| allow_from   | array  | No       | User ID whitelist; empty means all users are allowed             |
+
+## Setup
+
+1. Deploy a OneBot-compatible implementation (e.g. napcat)
+2. Configure the OneBot implementation to enable the WebSocket service and set an access token (if needed)
+3. Fill in the WebSocket URL and access token in the configuration file

docs/channels/onebot/README.pt-br.md

@@ -0,0 +1,33 @@
+> Voltar ao [README](../../../README.pt-br.md)
+
+# OneBot
+
+OneBot é um padrão de protocolo aberto para bots QQ, fornecendo uma interface unificada para diversas implementações de bots QQ (ex.: go-cqhttp, Mirai). Utiliza WebSocket para comunicação.
+
+## Configuração
+
+```json
+{
+  "channels": {
+    "onebot": {
+      "enabled": true,
+      "ws_url": "ws://localhost:8080",
+      "access_token": "",
+      "allow_from": []
+    }
+  }
+}
+```
+
+| Campo        | Tipo   | Obrigatório | Descrição                                                            |
+| ------------ | ------ | ----------- | -------------------------------------------------------------------- |
+| enabled      | bool   | Sim         | Se o canal OneBot deve ser habilitado                                |
+| ws_url       | string | Sim         | URL WebSocket do servidor OneBot                                     |
+| access_token | string | Não         | Token de acesso para conexão ao servidor OneBot                      |
+| allow_from   | array  | Não         | Lista de permissão de IDs de usuário; vazio permite todos            |
+
+## Configuração passo a passo
+
+1. Implante uma implementação compatível com OneBot (ex.: napcat)
+2. Configure a implementação OneBot para habilitar o serviço WebSocket e definir um token de acesso (se necessário)
+3. Preencha a URL WebSocket e o token de acesso no arquivo de configuração

docs/channels/onebot/README.vi.md

@@ -0,0 +1,33 @@
+> Quay lại [README](../../../README.vi.md)
+
+# OneBot
+
+OneBot là tiêu chuẩn giao thức mở dành cho bot QQ, cung cấp giao diện thống nhất cho nhiều triển khai bot QQ khác nhau (ví dụ: go-cqhttp, Mirai). Nó sử dụng WebSocket để giao tiếp.
+
+## Cấu hình
+
+```json
+{
+  "channels": {
+    "onebot": {
+      "enabled": true,
+      "ws_url": "ws://localhost:8080",
+      "access_token": "",
+      "allow_from": []
+    }
+  }
+}
+```
+
+| Trường       | Kiểu   | Bắt buộc | Mô tả                                                                |
+| ------------ | ------ | -------- | -------------------------------------------------------------------- |
+| enabled      | bool   | Có       | Có bật kênh OneBot hay không                                         |
+| ws_url       | string | Có       | URL WebSocket của máy chủ OneBot                                     |
+| access_token | string | Không    | Token truy cập để kết nối với máy chủ OneBot                         |
+| allow_from   | array  | Không    | Danh sách trắng ID người dùng; để trống cho phép tất cả              |
+
+## Quy trình thiết lập
+
+1. Triển khai một bản triển khai tương thích OneBot (ví dụ: napcat)
+2. Cấu hình bản triển khai OneBot để bật dịch vụ WebSocket và đặt token truy cập (nếu cần)
+3. Điền URL WebSocket và token truy cập vào file cấu hình

docs/channels/onebot/README.zh.md

@@ -1,3 +1,5 @@
+> 返回 [README](../../../README.zh.md)
+
 # OneBot
 
 OneBot 是一个面向 QQ 机器人的开放协议标准，为多种 QQ 机器人实现（例如 go-cqhttp、Mirai）提供了统一的接口。它使用 WebSocket 进行通信。