commitlore-setup

Use when a git repository needs CommitLore wired up for the first time, or when its hook/notes configuration looks broken. Runs the diagnostic, installs the commit-msg validation hook, fixes the notes fetch refspec so records survive a clone or fetch, and builds the local record index. Trigger phrases include "set up commitlore in this repo", "install the commitlore hook", "commitlore doctor is warning", "why isn't…