Supporting a basic tagging system in Shiori adds a big explosion of complexity...we've hit the "oh shit, there's a lot of stuff to keep track of" phase of the side project (has to work with api, cli, mcp, notion sync, naming validation, drag and drop, optimistic update + syncing, tag views with realtime sync + instant loading, new routes, new submenu components and interactions, etc etc) Worth it, but it's gonna be a slow burn to get all the details right.