The checklist and the obstacle data sorted texts without a compare
function. They now sort by code units through one shared compareCodeUnits,
the order a bare sort gave, the same on every machine; the material data of
a lock's parts no longer orders by the server's locale, so its hash cannot
change with it. The note editor takes the focus through a ref instead of
autoFocus, a direct function reference in a map becomes a call, and the
GPX import's default fields are a named constant.
Maurice