App 2.19.2: Full screen for CarPlay (experiment)

Adds com.allgo.carplay.service to immersive.full in Android 9's
policy_control setting when switched on, removes only that entry when
off. Car build (system user) only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6

app/src/main/res/values/strings.xml

@@ -28,7 +28,7 @@
     <string name="vehicle_row_power_average">Power, 5-min average</string>
     <string name="power_kw">%1$.1f kW</string>
     <string name="power_waiting">needs a minute of data</string>
-    <string name="label_tire_unit">Tyre pressure unit</string>
+    <string name="label_tire_unit">Tyre pressure</string>
     <string name="label_accent">Accent colour</string>
     <string name="energy_kwh">%1$.1f kWh</string>
     <string name="energy_trip_note">net, after recuperation</string>
@@ -114,6 +114,10 @@
 
     <string name="label_full_screen">Full screen</string>
     <string name="hint_full_screen">Hides the car\'s top and bottom bars while this app is open. Swipe in from the top or bottom edge to show them briefly, e.g. for the climate controls.</string>
+    <string name="label_carplay_full_screen">Full screen for CarPlay (experiment)</string>
+    <string name="hint_carplay_full_screen">Hides the car\'s bars over CarPlay too, from its next start. A black strip? Reconnect the phone. Off restores the setting.</string>
+    <string name="hint_carplay_full_screen_unavailable">Needs the car build: only a system app may change this.</string>
+    <string name="carplay_full_screen_failed">Could not change the CarPlay full-screen setting</string>
     <string name="label_voice_key">Double-press the voice key to open this app</string>
     <string name="hint_voice_key">Press the voice key on the steering wheel twice quickly. The voice assistant may still react to the presses.</string>
     <string name="label_abrp_upload_enabled">Send live data</string>