feat: give window closing its own Pencereler tab

The window switch sat on the Upload Service page, which implied a relationship
that does not exist: closing windows needs no ABRP token, no GPS, no upload
interval, and runs in its own service whether or not uploading is on. It is now
a sixth page of the pager, between Araç and Wi-Fi.

Splitting it in two while it moved, because the new page has room the card did
not: the switch and status stay together, and the event log gets its own card,
monospaced and no longer capped at four lines.

setOffscreenPageLimit switches from a hardcoded 4 to panes.length - 1. It was
already one short of the page count and would have gone stale again here.
refreshWindowClose runs on the two-second tick and dereferences views on a page
that may not be on screen, so the pager must not be free to detach them.

Six tabs share the bar where five did. Widget.EV.NavTab already autosizes down
to a 12sp floor, so the labels shrink rather than truncate.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

README.md

@@ -136,9 +136,10 @@ put them in a text file and tap **Import file** — see [Config file](#config-fi
 
 ## Configuration
 
-On the **Upload Service** page, **Kapı açılınca camları kapat** enables the WinClose
-integration independently of ABRP. It is off by default and restarts with the head unit
-once enabled; no ABRP token, GPS permission, speed threshold or driving timer is needed.
+On its own **Pencereler** page — not under Upload Service, since it shares nothing with
+ABRP — **Kapı açılınca camları kapat** enables the WinClose integration. It is off by
+default and restarts with the head unit once enabled; no ABRP token, GPS permission,
+speed threshold or driving timer is needed.
 
 The integration is adapted from the sibling WinClose `WindowHardware.kt`: SWI69
 `CarStateClient` door callback (transaction 6, value 0) triggers the VSM's