fix(client): work through the findings from the coverage pass

214 items came out of writing the tests. Real defects are corrected, dead code
is removed rather than covered, and the tests that pinned the old behaviour
move with them.

Also drops two agent coverage scratch files that slipped into the coverage PR
and adds the ignore rule that keeps them out.

shared/src/i18n/ca/collection.ts

@@ -76,6 +76,7 @@ const collection: TranslationStrings = {
   'collections.copyToTripTitle': 'Copiar al viatge',
   'collections.copyN': 'Copia {count} al viatge',
   'collections.copyToTripSearch': 'Cercar viatges',
+  'collections.searchLists': 'Cerca llistes',
   'collections.copyToTripConfirm': 'Copiar',
   'collections.noTrips': 'Encara no hi ha viatges',
   'collections.alreadyInTrip': 'Ja es troba en aquest viatge',