App 2.33.0: set the drive mode from Settings, only in P at a standstill

The owner lifted the read-only rule for the drive mode alone. Settings
has Eco, Normal, Sport, Snow and Custom; the lit button is what the car
reports. A tap reads gear and speed fresh and writes only in P at 0 km/h
(DriveModeWrite, unit-tested; unreadable is a refusal), through a CPM-only
write behind EVHardware's standstill gate, then reads the mode back and
says what the car reports. The wide layout's charging price joined the
battery card so the page still fits. Not tried on the car.

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

app/src/test/java/com/evsuite/abrp/DriveModeWriteTest.java

@@ -0,0 +1,42 @@
+package com.evsuite.abrp;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+/** The drive mode write's rules — pure JVM. */
+public class DriveModeWriteTest {
+
+    @Test
+    public void onlyInPAtAStandstill() {
+        assertEquals(DriveModeWrite.Verdict.ALLOWED, DriveModeWrite.check(0f, 1));
+        assertEquals(DriveModeWrite.Verdict.NOT_IN_P, DriveModeWrite.check(0f, 4));
+        assertEquals(DriveModeWrite.Verdict.NOT_IN_P, DriveModeWrite.check(0f, 3));
+        assertEquals(DriveModeWrite.Verdict.NOT_IN_P, DriveModeWrite.check(30f, 2));
+        assertEquals(DriveModeWrite.Verdict.MOVING, DriveModeWrite.check(0.5f, 1));
+    }
+
+    @Test
+    public void unreadableIsRefused() {
+        assertEquals(DriveModeWrite.Verdict.UNREADABLE, DriveModeWrite.check(null, 1));
+        assertEquals(DriveModeWrite.Verdict.UNREADABLE, DriveModeWrite.check(0f, null));
+        assertEquals(DriveModeWrite.Verdict.UNREADABLE, DriveModeWrite.check(Float.NaN, 1));
+        assertEquals(DriveModeWrite.Verdict.UNREADABLE, DriveModeWrite.check(-1f, 1));
+    }
+
+    @Test
+    public void resultIsWhatTheCarReports() {
+        assertEquals(DriveModeWrite.Outcome.APPLIED, DriveModeWrite.outcome(4, 4));
+        assertEquals(DriveModeWrite.Outcome.NOT_APPLIED, DriveModeWrite.outcome(4, 2));
+        assertEquals(DriveModeWrite.Outcome.UNREAD, DriveModeWrite.outcome(4, null));
+    }
+
+    @Test
+    public void buttonsByCode() {
+        assertEquals(0, DriveModeWrite.indexOf(2));
+        assertEquals(2, DriveModeWrite.indexOf(4));
+        assertEquals(4, DriveModeWrite.indexOf(7));
+        assertEquals(-1, DriveModeWrite.indexOf(5));
+        assertEquals(-1, DriveModeWrite.indexOf(null));
+    }
+}