deep reply chain rendering

currently in red dwarf, the reply rendering system works by fetching microcosm constellation for all replies for a given post. this results in a limited set of replies because it only fetches a single layer/depth of replies

the social-app version of red dwarf already fixes this, using a more robust reply tree construction system (albeit still slightly wrong) and fetches all reply depths at once from microcosm (instead of fetching by "parent" it fetches by "root") this is the social-app branch for red dwarf https://github.com/rimar1337/social-app/tree/merged-red-dwarf the code here is messy, so i include it here for reference