To each their own, and everyone's experience seems to vary, but I have a hard time picturing people using Claude/ChatGPT web UIs for any serious developmen. It seems like so much time would he wasted recreating good context, copy/pasting, etc.
We have tools like Aider (which has copy/paste mode if you don't have API access for some reason), Cline, CoPilot edit mode, and more. Things like having a conventions file and exposing the dependencies list and easy additional of files into context seem essential to me in order to make LLMs productive, and I always spend more time steering results when easy consistent context isn't at my fingertips.
Before tue advent of proper IDE integrations and editors like Zed, copy pasting form the web UI was basically how things were done, and man was it daunting. As you say, having good, fine grained, repeatable and we'll integrated context management is paramount to efficient LLM based work.
We have tools like Aider (which has copy/paste mode if you don't have API access for some reason), Cline, CoPilot edit mode, and more. Things like having a conventions file and exposing the dependencies list and easy additional of files into context seem essential to me in order to make LLMs productive, and I always spend more time steering results when easy consistent context isn't at my fingertips.