I would indeed (like Altman promised for OpenAI; 'we're gonna steamroll you'), implement all these cases (and many more) on their side, so their 'chat' becomes a full toolkit for building, visualising, prompting etc and allow people to plugin their data/processes (maybe with a few partners for that part which they can easily replace or have multiple of).

Currently, the "Added to project" button that remains for n seconds and you have to wait for to add another file (sometimes Claude generates 4-5 files per chat) is such an annoyance that I guess they should stick to training and nothing else.