test(gates): the complexity ratchet names a function by what it is bound to

ESLint leaves an arrow bound to a const or a property unnamed, so three ratchet keys were
(anonymous) and ranked by position again. A tiny rule reports each unnamed function's
binding (const, property, assignment, else <callee> callback) at the head complexity
reports, and the keys line up by location.

frontend/src/lib/sourceSize.contract.test.ts

@@ -61,11 +61,11 @@ const COMPLEX: Record<string, number> = {
   "components/PlexCollectionView.tsx::PlexCollectionView": 41,
   "components/PlexDiscover.tsx::PlexDiscover": 21,
   "components/PlexInfo.tsx::PlexInfo": 65,
-  "components/PlexPlayer.tsx::(anonymous)": 22,
+  "components/PlexPlayer.tsx::onKey": 22,
   "components/PlexPlayer.tsx::PlexPlayer": 103,
   "components/PlexPlaylistView.tsx::PlexPlaylistView": 22,
   "components/PlexSidebar.tsx::PlexSidebar": 32,
-  "components/PlexStatsOverlay.tsx::(anonymous)": 25,
+  "components/PlexStatsOverlay.tsx::sample": 25,
   "components/Scheduler.tsx::JobRow": 21,
   "components/Scheduler.tsx::Scheduler": 21,
   "components/SetupWizard.tsx::SetupWizard": 21,
@@ -90,7 +90,7 @@ const COMPLEX: Record<string, number> = {
   "components/ui/anchoredPopoverHooks.ts::useAnchoredPopover": 30,
   "components/usePlaylistActions.tsx::pushSteps": 23,
   "components/usePlexActiveFilters.ts::buildPlexActiveFilters": 25,
-  "components/useVideoActions.tsx::(anonymous)": 25,
+  "components/useVideoActions.tsx::items": 25,
   "lib/api/core.ts::localizeDetail": 48,
   "lib/api/core.ts::req": 22,
   "lib/api/plex.ts::appendPlexFilters": 26,