JHipster 9.1.0 just dropped. For years, that sentence put a specific knot in Sam's stomach — version bumps meant a git-merge adventure, surprise conflicts, and the nagging fear of a file you'd customized getting quietly overwritten. OtakuShelf is on 9.0.0 and Sam actually likes it the way it is. So the real question isn't "how do I upgrade," it's "should I, and what will it cost me?" The agent can answer both before a single file changes.
First, how big is this really?
Sam starts by scoping it:
How risky is upgrading /Users/sam/projects/otakushelf to JHipster 9.1.0?
The upgrade_advisor tool reads OtakuShelf's .yo-rc.json and entity configs and reports back the shape of the jump:








