Rewrite goal 5 as an aim, and plan a load reporting every mistake at once

todo.md

@@ -208,6 +208,9 @@ by a `data-import/` script, as README goal 12 asks.
 
 ### Library and CLI
 
+- Report every mistake a load finds in one error, as the decision "A load reports every
+  mistake at once" states: `New` and `NewTemplate` stop at the first, so data holding
+  two mistakes takes two runs to fix. Split it into sub-items before starting.
 - Rename `newRand` to `newGeneratorState` and `Generator.rand` to `state`: both name
   half of a `generatorState`, hiding its `{seq()}` counters, and `New`'s local `rng`
   shadows the `rng` interface.
@@ -297,10 +300,6 @@ by a `data-import/` script, as README goal 12 asks.
   together, where the fence counts them alternatives and compares neither. Have the error
   name the path spelling that holds, `{/geo.SE.locality.name}|{/geo.SE.municipality.name}`,
   as the README's rule on a rejected spelling asks.
-- Decide, in "An error is a contract by what it names", which of several mistakes a
-  load names, and link the entry to goal 5, which it serves and does not name. The
-  fence names the lowest by route and path, so a data edit can move which one is named;
-  proposed: fixed within a version, as seeded output is, and free to change in any release.
 - Name the file a link error comes from beside its category path, `sub.x
   (/d/a/sub/x.json): …`: with several `--data-path` layers the author has to work out
   which directory won, while a parse error on the same file names it.