diff --git a/pkg/config/config.go b/pkg/config/config.go
index a732b9fb1..5d34408fe 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -504,18 +504,16 @@ type WeComAppConfig struct {
 }
 
 type WeComAIBotConfig struct {
-	Enabled        bool                `json:"enabled" env:"PICOCLAW_CHANNELS_WECOM_AIBOT_ENABLED"`
-	Token          string              `json:"token"   env:"PICOCLAW_CHANNELS_WECOM_AIBOT_TOKEN"`
-	EncodingAESKey string              `json:"encoding_aes_key" env:"PICOCLAW_CHANNELS_WECOM_AIBOT_ENCODING_AES_KEY"`
-	WebhookPath    string              `json:"webhook_path"     env:"PICOCLAW_CHANNELS_WECOM_AIBOT_WEBHOOK_PATH"`
-	AllowFrom      FlexibleStringSlice `json:"allow_from" env:"PICOCLAW_CHANNELS_WECOM_AIBOT_ALLOW_FROM"`
-	ReplyTimeout   int                 `json:"reply_timeout" env:"PICOCLAW_CHANNELS_WECOM_AIBOT_REPLY_TIMEOUT"`
-	// MaxSteps is the maximum streaming steps.
-	MaxSteps int `json:"max_steps" env:"PICOCLAW_CHANNELS_WECOM_AIBOT_MAX_STEPS"`
-	// WelcomeMessage is sent on enter_chat event; empty = no welcome.
-	WelcomeMessage     string `json:"welcome_message"              env:"PICOCLAW_CHANNELS_WECOM_AIBOT_WELCOME_MESSAGE"`
-	ProcessingMessage  string `json:"processing_message,omitempty" env:"PICOCLAW_CHANNELS_WECOM_AIBOT_PROCESSING_MESSAGE"`
-	ReasoningChannelID string `json:"reasoning_channel_id" env:"PICOCLAW_CHANNELS_WECOM_AIBOT_REASONING_CHANNEL_ID"`
+	Enabled            bool                `json:"enabled"                      env:"PICOCLAW_CHANNELS_WECOM_AIBOT_ENABLED"`
+	Token              string              `json:"token"                        env:"PICOCLAW_CHANNELS_WECOM_AIBOT_TOKEN"`
+	EncodingAESKey     string              `json:"encoding_aes_key"             env:"PICOCLAW_CHANNELS_WECOM_AIBOT_ENCODING_AES_KEY"`
+	WebhookPath        string              `json:"webhook_path"                 env:"PICOCLAW_CHANNELS_WECOM_AIBOT_WEBHOOK_PATH"`
+	AllowFrom          FlexibleStringSlice `json:"allow_from"                   env:"PICOCLAW_CHANNELS_WECOM_AIBOT_ALLOW_FROM"`
+	ReplyTimeout       int                 `json:"reply_timeout"                env:"PICOCLAW_CHANNELS_WECOM_AIBOT_REPLY_TIMEOUT"`
+	MaxSteps           int                 `json:"max_steps"                    env:"PICOCLAW_CHANNELS_WECOM_AIBOT_MAX_STEPS"`       // Maximum streaming steps
+	WelcomeMessage     string              `json:"welcome_message"              env:"PICOCLAW_CHANNELS_WECOM_AIBOT_WELCOME_MESSAGE"` // Sent on enter_chat event; empty = no welcome
+	ProcessingMessage  string              `json:"processing_message,omitempty" env:"PICOCLAW_CHANNELS_WECOM_AIBOT_PROCESSING_MESSAGE"`
+	ReasoningChannelID string              `json:"reasoning_channel_id"         env:"PICOCLAW_CHANNELS_WECOM_AIBOT_REASONING_CHANNEL_ID"`
 }
 
 type PicoConfig struct {