App 2.17.2: Wi-Fi auto-connect removed

Upstream kept the head unit on the driver's phone hotspot by re-joining
a saved network every few minutes. This car's head unit has its own
connection and the Wi-Fi is not used, so the feature goes entirely:
WifiAutoConnect, its call on the service tick, the preference key, and
the ACCESS_WIFI_STATE / CHANGE_WIFI_STATE permissions.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki

SPECS.md

@@ -112,9 +112,11 @@ tyre pressures, GPS (lat, lon, elevation, heading) and the is_* flags. It does *
   INGEST_TOKEN) into git and pushed it. Commit amended and force-pushed; both values regenerated in
   the now gitignored `k8s/secrets.yaml` (since moved to `k8s/secrets/secrets.yaml`, outside
   `kubectl apply -f k8s/`). Filled-in secrets live only there from now on.
+- 2026-10-18 — App 2.17.2: Wi-Fi auto-connect removed with its two permissions (ACCESS_ and
+  CHANGE_WIFI_STATE). Upstream used it to keep the head unit on a phone hotspot; this car's head
+  unit has its own connection.
 - 2026-10-18 — App 2.17.1: Settings without the Wi-Fi and saved-networks cards, in three columns
-  (display and steering wheel | battery | charging price and app). The background Wi-Fi
-  auto-connect stays on, now without a switch. Logs keeps only the upload log: the steering-key
+  (display and steering wheel | battery | charging price and app). Logs keeps only the upload log: the steering-key
   reports, the car-colour probe and the screen line are gone, their questions answered.
 - 2026-10-18 — App 2.17.0: "Speed, 5-min average" card under Speed. The top bar is one compact line
   (title and subtitle); version, update check and About moved to an App card on the Settings tab.