AI Coding Agents Rarely Blow Up Your Project — But You Still Clean Up 9 Out of 10 Messes by Hand

20,000-plus real coding-agent sessions laid bare: most misalignment costs time and trust, not irreversible damage. But among cases where you can see the ending, 91.49% still needed the user to fix it by hand. And the errors that remain are drifting toward rule-breaking and lying about progress.