feat(feishu): add random reaction emoji config

- Add random_reaction_emoji config for Feishu channel
- Update .env.example with new env vars
- Update documentation (README.zh.md)

.env.example

@@ -12,6 +12,10 @@
 # DISCORD_BOT_TOKEN=xxx
 # LINE_CHANNEL_SECRET=xxx
 # LINE_CHANNEL_ACCESS_TOKEN=xxx
+# Feishu (飞书)
+# PICOCLAW_CHANNELS_FEISHU_APP_ID=cli_xxx
+# PICOCLAW_CHANNELS_FEISHU_APP_SECRET=xxx
+# PICOCLAW_CHANNELS_FEISHU_RANDOM_REACTION_EMOJI=Typing,Onit
 
 # ── Web Search (optional) ────────────────
 # BRAVE_SEARCH_API_KEY=BSA...

docs/channels/feishu/README.zh.md

@@ -26,7 +26,8 @@
 | app_secret         | string | 是   | 飞书应用的 App Secret            |
 | encrypt_key        | string | 否   | 事件回调加密密钥                 |
 | verification_token | string | 否   | 用于Webhook事件验证的Token       |
-| allow_from         | array  | 否   | 用户ID白名单，空表示允许所有用户 |
+| allow_from         | array  | 否   | 用户ID白名单，空表示所有用户   |
+| random_reaction_emoji | array | 否   | 随机添加的表情列表，空则使用默认 "Pin" |
 
 ## 设置流程
 

pkg/channels/feishu/feishu_64.go

@@ -7,6 +7,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"math/rand"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -195,18 +196,29 @@ func (c *FeishuChannel) SendPlaceholder(ctx context.Context, chatID string) (str
 }
 
 // ReactToMessage implements channels.ReactionCapable.
-// Adds an "Pin" reaction and returns an undo function to remove it.
+// Adds a reaction (randomly chosen from config) and returns an undo function to remove it.
 func (c *FeishuChannel) ReactToMessage(ctx context.Context, chatID, messageID string) (func(), error) {
+	// Get emoji list from config
+	emojiList := c.config.RandomReactionEmoji
+	if len(emojiList) == 0 {
+		// Default to "Pin" if no config
+		emojiList = []string{"Pin"}
+	}
+
+	// Randomly choose one from the list
+	chosenEmoji := emojiList[rand.Intn(len(emojiList))]
+
 	req := larkim.NewCreateMessageReactionReqBuilder().
 		MessageId(messageID).
 		Body(larkim.NewCreateMessageReactionReqBodyBuilder().
-			ReactionType(larkim.NewEmojiBuilder().EmojiType("Pin").Build()).
+			ReactionType(larkim.NewEmojiBuilder().EmojiType(chosenEmoji).Build()).
 			Build()).
 		Build()
 
 	resp, err := c.client.Im.V1.MessageReaction.Create(ctx, req)
 	if err != nil {
 		logger.ErrorCF("feishu", "Failed to add reaction", map[string]any{
+			"emoji":     chosenEmoji,
 			"message_id": messageID,
 			"error":      err.Error(),
 		})
@@ -214,6 +226,7 @@ func (c *FeishuChannel) ReactToMessage(ctx context.Context, chatID, messageID st
 	}
 	if !resp.Success() {
 		logger.ErrorCF("feishu", "Reaction API error", map[string]any{
+			"emoji":      chosenEmoji,
 			"message_id": messageID,
 			"code":       resp.Code,
 			"msg":        resp.Msg,

pkg/config/config.go

@@ -268,6 +268,7 @@ type FeishuConfig struct {
 	GroupTrigger       GroupTriggerConfig  `json:"group_trigger,omitempty"`
 	Placeholder        PlaceholderConfig   `json:"placeholder,omitempty"`
 	ReasoningChannelID string              `json:"reasoning_channel_id"    env:"PICOCLAW_CHANNELS_FEISHU_REASONING_CHANNEL_ID"`
+	RandomReactionEmoji FlexibleStringSlice `json:"random_reaction_emoji"   env:"PICOCLAW_CHANNELS_FEISHU_RANDOM_REACTION_EMOJI"`
 }
 
 type DiscordConfig struct {