Ask for a short plan with file list before edits.
Reject plans that touch configs you did not name.
Start the edit turn from the approved plan only.
Run tests after the first small patch.
Save the working checklist into AGENTS.md.
Change one variable at a time and confirm what actually helped.
If a company policy is involved, rule that out before chasing client settings.
Write the working steps into a short checklist for next time.
Export or screenshot a good setup so reinstalls are faster.
If it still flakes, retest on a clean network such as phone hotspot.