figma-typings-audit

Upgrade @figma/plugin-typings and absorb what the new version exposes. Diffs the .d.ts between the installed and the target version (that package ships no changelog), sorts the changes into breakage / new API / silently-added fields, maps each onto the sandbox handlers, the hand-written Zod mirrors in shared, and the tool registry — then bumps the package and builds whatever the user picks. Use whenever the user…