Fix stale comment counts found in review (#159)

backend/internal/store/admin.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 )
 
-// Series filter names (issue #140): the eight hygiene names are ordered
+// Series filter names (issue #140): the seven repair filters are ordered
 // permanent-then-fixable — the repairs nothing will ever undo first, the
 // ones a Poll can make right after. SeriesFilterFinished is not part of
 // that ordering: a finished Series is a deliberate state, not a repair, so
@@ -26,7 +26,7 @@ const (
 	SeriesFilterFinished     = "finished"
 )
 
-// SeriesFilter is one named hygiene predicate over the whole library. Site
+// SeriesFilter is one named filter predicate over the whole library. Site
 // and Kind narrow the row read; Name picks the predicate; Cutoff is the
 // staleness boundary the "stale" filter compares against, supplied by the
 // caller's clock — the store has no clock; Page is 1-based.