feat: domain blocker plugin

internal/db/db.go

@@ -386,6 +386,24 @@ func (d *Database) UpdateChannelPlugin(id int64, enabled bool) error {
 	return err
 }
 
+// UpdateChannelPluginConfig updates a channel plugin's configuration
+func (d *Database) UpdateChannelPluginConfig(id int64, config map[string]interface{}) error {
+	// Convert config to JSON
+	configJSON, err := json.Marshal(config)
+	if err != nil {
+		return err
+	}
+
+	query := `
+		UPDATE channel_plugin
+		SET config = ?
+		WHERE id = ?
+	`
+
+	_, err = d.db.Exec(query, string(configJSON), id)
+	return err
+}
+
 // DeleteChannelPlugin deletes a channel plugin
 func (d *Database) DeleteChannelPlugin(id int64) error {
 	query := `