Good history search (including non "main" conversation branches) and convenient conversation management (bookmarking, folders, maybe something smarter) would be

Good history search (including non "main" conversation branches) and convenient conversation management (bookmarking, folders, maybe something smarter) would be great. Also, maybe some convenient way to create message templates? I don't know how I'd implement this, I just know that I often write one long prompt that I reuse multiple times, with multiple minor tweaks/edits, and it'd be amazing to have a convenient tool to manage that. Also, good mobile/tablet support, convenient to use and without bugs (as I happen to spend most of my time writing prompts on my ipad, but that's just me). If you already have a demo - please share a link, I'd be happy to beta test it and maybe become one of the early customers.