Yeah I have a well established ... well designed codebase that I had before agentic coding and it does support horizental scaling (more services integrations doing more or less the same).

I got lazy around claude fable and astra, and asked them to work in loop (pick specified issue, develop it, qa it ...) have a separate CTO checking on arch.

at the end both models swore that the code is perfect and well designed and nothing is lacking.

I ran the software and it suddenly started writing large amount of data to CSV files instead of the typical DB usage.

AI decided to use csv for testing, and just drifted away. 0 regards to the actual project, 0 regards to common sense.

anecdotal but really weird, the project category is rather standard, I wouldn't accept such a mistake from a junior developer.