docs: document gateway.log_level in all READMEs and i18n configuration docs (#2178)

* docs: document gateway.log_level in all READMEs and i18n configuration docs

Add gateway log level note to Channels section in all 9 READMEs and
add Gateway Log Level section to zh/fr/ja/pt-br/vi configuration docs.

- gateway.log_level (default: fatal) controls log verbosity
- Supported values: debug, info, warn, error, fatal
- Can also be set via PICOCLAW_LOG_LEVEL env var
- English docs/configuration.md already had this section

* fix(docs): correct gateway.log_level default from fatal to warn

DefaultConfig() sets Gateway.LogLevel to "warn", not "fatal".
Update all READMEs and i18n configuration docs to reflect the
actual default value.

---------

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

docs/configuration.md

@@ -38,12 +38,12 @@ PICOCLAW_HOME=/srv/picoclaw PICOCLAW_CONFIG=/srv/picoclaw/main.json picoclaw gat
 ```json
 {
   "gateway": {
-    "log_level": "fatal"
+    "log_level": "warn"
   }
 }
 ```
 
-When omitted, the default is `fatal`. Supported values: `debug`, `info`, `warn`, `error`, `fatal`.
+When omitted, the default is `warn`. Supported values: `debug`, `info`, `warn`, `error`, `fatal`.
 
 You can also override this with the environment variable `PICOCLAW_LOG_LEVEL`.
 

docs/fr/configuration.md

@@ -31,6 +31,22 @@ PICOCLAW_HOME=/opt/picoclaw picoclaw agent
 PICOCLAW_HOME=/srv/picoclaw PICOCLAW_CONFIG=/srv/picoclaw/main.json picoclaw gateway
 ```
 
+### Niveau de Log du Gateway
+
+`gateway.log_level` contrôle la verbosité des logs du Gateway, configurable dans `config.json` :
+
+```json
+{
+  "gateway": {
+    "log_level": "warn"
+  }
+}
+```
+
+La valeur par défaut est `warn`. Valeurs supportées : `debug`, `info`, `warn`, `error`, `fatal`.
+
+Peut également être surchargé via la variable d'environnement : `PICOCLAW_LOG_LEVEL=info`
+
 ### Structure du Workspace
 
 PicoClaw stocke les données dans votre workspace configuré (par défaut : `~/.picoclaw/workspace`) :

docs/ja/configuration.md

@@ -31,6 +31,22 @@ PICOCLAW_HOME=/opt/picoclaw picoclaw agent
 PICOCLAW_HOME=/srv/picoclaw PICOCLAW_CONFIG=/srv/picoclaw/main.json picoclaw gateway
 ```
 
+### Gateway ログレベル
+
+`gateway.log_level` は Gateway のログ詳細度を制御します。`config.json` で設定できます：
+
+```json
+{
+  "gateway": {
+    "log_level": "warn"
+  }
+}
+```
+
+デフォルト値は `warn` です。サポートされる値：`debug`、`info`、`warn`、`error`、`fatal`。
+
+環境変数でも上書き可能です：`PICOCLAW_LOG_LEVEL=info`
+
 ### ワークスペースレイアウト
 
 PicoClaw は設定されたワークスペース（デフォルト: `~/.picoclaw/workspace`）にデータを保存します：

docs/pt-br/configuration.md

@@ -31,6 +31,22 @@ PICOCLAW_HOME=/opt/picoclaw picoclaw agent
 PICOCLAW_HOME=/srv/picoclaw PICOCLAW_CONFIG=/srv/picoclaw/main.json picoclaw gateway
 ```
 
+### Nível de Log do Gateway
+
+`gateway.log_level` controla a verbosidade dos logs do Gateway, configurável em `config.json`:
+
+```json
+{
+  "gateway": {
+    "log_level": "warn"
+  }
+}
+```
+
+O valor padrão é `warn`. Valores suportados: `debug`, `info`, `warn`, `error`, `fatal`.
+
+Também pode ser substituído pela variável de ambiente: `PICOCLAW_LOG_LEVEL=info`
+
 ### Layout do Workspace
 
 O PicoClaw armazena dados no seu workspace configurado (padrão: `~/.picoclaw/workspace`):

docs/vi/configuration.md

@@ -31,6 +31,22 @@ PICOCLAW_HOME=/opt/picoclaw picoclaw agent
 PICOCLAW_HOME=/srv/picoclaw PICOCLAW_CONFIG=/srv/picoclaw/main.json picoclaw gateway
 ```
 
+### Mức Log của Gateway
+
+`gateway.log_level` kiểm soát mức độ chi tiết của log Gateway, có thể cấu hình trong `config.json`:
+
+```json
+{
+  "gateway": {
+    "log_level": "warn"
+  }
+}
+```
+
+Giá trị mặc định là `warn`. Các giá trị được hỗ trợ: `debug`, `info`, `warn`, `error`, `fatal`.
+
+Cũng có thể ghi đè bằng biến môi trường: `PICOCLAW_LOG_LEVEL=info`
+
 ### Bố Cục Workspace
 
 PicoClaw lưu trữ dữ liệu trong workspace đã cấu hình (mặc định: `~/.picoclaw/workspace`):

docs/zh/configuration.md

@@ -31,6 +31,22 @@ PICOCLAW_HOME=/opt/picoclaw picoclaw agent
 PICOCLAW_HOME=/srv/picoclaw PICOCLAW_CONFIG=/srv/picoclaw/main.json picoclaw gateway
 ```
 
+### Gateway 日志等级
+
+`gateway.log_level` 控制 Gateway 的日志详细程度，可在 `config.json` 中配置：
+
+```json
+{
+  "gateway": {
+    "log_level": "warn"
+  }
+}
+```
+
+默认值为 `warn`。支持的值：`debug`、`info`、`warn`、`error`、`fatal`。
+
+也可通过环境变量覆盖：`PICOCLAW_LOG_LEVEL=info`
+
 ### 工作区布局 (Workspace Layout)
 
 PicoClaw 将数据存储在您配置的工作区中（默认：`~/.picoclaw/workspace`）：