i too have discovered that feature chats are surely a winner (as well as a pre-requirement for parallelization)

in a similar vein, i match github project issues to md files committed to repo

essentially, the github issue content is just a link to the md file in the repo also, epics are folders with links (+ a readme that gets updated after each task)

i am very happy about it too

it's also very fast and handy to reference either from claude using @ .ie: did you consider what has been done @

other major improvements that worked for me were - DOC_INDEX.md build around the concept of "read this if you are working on X (infra, db, frontend, domain, ....)" - COMMON_TASKS.md (if you need to do X read Y, if you need to add a new frontend component read HOW_TO_ADD_A_COMPONENT.md )

common tasks tend to be increase quality when they are epxpressed in a checklist format