A Matrix bot that automatically pins chat messages to an archive channel. This uses nio-template as a base.
Matrix doesn't natively have a Discord-like "pin" feature. This adds one: it will automatically quote any message the bot is in to the configured pins_room if the message is reacted to with a 📌 emoji. It will automatically join all channels it is invited to.
Follow SETUP.md in tree for how to set it up: notably, for me I had to set the pins_room config to the "Internal room ID", and not the published address.