frontend: fix equipped-card preset auto-selection race

cardsAutoSelectByIccid latched its 'already handled' guard even when no
matching preset was found, so a card equipped before /api/presets had
loaded (the connect-time race with the status/availability polls) never
got auto-selected: navigating to SCP80/RAM showed no preset until the card
was re-inserted.  The guard is now latched only after a successful
selection, and cardsFetch re-runs the auto-selection once the store
arrives, so the card's preset is picked as soon as both resources are
available.

Bumps VERSION to 3.40.3 and the SW cache to simple-v488.

frontend/sw.js

@@ -1,4 +1,4 @@
-const CACHE = 'simple-v487';
+const CACHE = 'simple-v488';
 const URLS = [
   'index.html',
   'help.html',