App 2.30.0: a chibi fox as the third Mascot

FoxFigure draws a sitting fox with a scarf in the accent colour whose
ears and tail act the mood with the face: wagging, stiff, drooping,
laid back. The chibi's shared parts (frame, eyes, mouths, limbs by
mood, effects) moved into ChibiBase, which both figures extend.
Settings → Mascot: Classic / Chibi / Fox.

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/MascotMoodTest.java

@@ -64,6 +64,7 @@ public class MascotMoodTest {
     @Test
     public void characterFromPref() {
         assertEquals(MascotCharacter.CHIBI, MascotCharacter.fromPref("CHIBI"));
+        assertEquals(MascotCharacter.FOX, MascotCharacter.fromPref("FOX"));
         assertEquals(MascotCharacter.CLASSIC, MascotCharacter.fromPref("CLASSIC"));
         assertEquals(MascotCharacter.CLASSIC, MascotCharacter.fromPref(null));
         assertEquals(MascotCharacter.CLASSIC, MascotCharacter.fromPref("NOPE"));