Add exempt_users config to skip muting specific users

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

main.go

@@ -14,10 +14,11 @@ import (
 )
 
 type Config struct {
-	Token     string `json:"token"`
-	GuildID   string `json:"guild_id"`
-	ChannelID string `json:"channel_id"`
-	Keybind   string `json:"keybind"`
+	Token       string   `json:"token"`
+	GuildID     string   `json:"guild_id"`
+	ChannelID   string   `json:"channel_id"`
+	Keybind     string   `json:"keybind"`
+	ExemptUsers []string `json:"exempt_users"`
 }
 
 func loadConfig() (*Config, error) {
@@ -103,9 +104,13 @@ func toggleMute(dg *discordgo.Session, cfg *Config, muted bool) {
 		log.Printf("guild not in state cache (is the bot in the server?): %v", err)
 		return
 	}
+	exempt := make(map[string]bool, len(cfg.ExemptUsers))
+	for _, id := range cfg.ExemptUsers {
+		exempt[id] = true
+	}
 	count := 0
 	for _, vs := range guild.VoiceStates {
-		if vs.ChannelID == cfg.ChannelID {
+		if vs.ChannelID == cfg.ChannelID && !exempt[vs.UserID] {
 			if err := dg.GuildMemberMute(cfg.GuildID, vs.UserID, muted); err != nil {
 				log.Printf("  warning: user %s: %v", vs.UserID, err)
 			}