build(frontend): rebuild static/ so the restore UI actually ships (#2656)

    The dev merge took dev's static/index.html, which loads the pre-restore
    bundle, and left both bundles tracked. Merged as-is none of the frontend
    shipped: no Restore button, no modal, no Type column.

    Rebuild drops the superseded bundle and points index.html at a single one
    that carries restoreFromGit and this round's new note leaf. The CSS
    hashes identically to dev'"'"'s, so index.html differs by the script line
    alone.