Fix VICE cross-compile and image cache-warming for release builds

build-image/Dockerfile: add bison (VICE's configure needs a yacc-compatible
parser generator, same category as the earlier flex fix) and exclude
packageRelease/signReleaseBundle from the cache-warm stage's gradlew run,
since those always fail there for lack of a keystore that's never baked
into the image.

vice_jni.c: guard getFrameCount()/setSoundEnabled() with #ifdef
HAVE_VICE_SRC like their sibling functions already do — they referenced
globals that only exist when VICE is linked in, breaking the documented
no-VICE placeholder build. Only surfaced now because the cache-warm stage
is the first thing to ever compile this file without VICE.

dist.sh: floor the untagged dev-build's versionCode at 1, since the
0.0.0-dev+<sha> placeholder otherwise computes to 0, which Android's
Gradle plugin rejects.

run-image.sh: wipe generated build artifacts (vice-src, vice-libs,
nibtools-src/libs, app/build, .cxx) before each run so it exercises a true
from-scratch build like CI does, instead of silently reusing artifacts
left over from a previous local run. Also chown the bind-mounted repo back
to the host user on exit, since the container runs as root and was
otherwise leaving root-owned files behind.

SchwertUndMagieOnPebbleCompanionApp/app/src/main/jni/vice_jni.c

@@ -807,7 +807,11 @@ JNI_FN(jboolean, getDriveLed)(JNIEnv *env, jobject obj) {
 
 JNI_FN(jint, getFrameCount)(JNIEnv *env, jobject obj) {
     (void)env; (void)obj;
+#ifdef HAVE_VICE_SRC
     return (jint)g_frame_count;
+#else
+    return 0;
+#endif
 }
 
 /* Schwert und Magie uploads a custom character set that redefines a handful of
@@ -895,7 +899,11 @@ JNI_FN(void, injectKey)(JNIEnv *env, jobject obj, jint keyCode, jboolean pressed
 
 JNI_FN(void, setSoundEnabled)(JNIEnv *env, jobject obj, jboolean enabled) {
     (void)env; (void)obj;
+#ifdef HAVE_VICE_SRC
     g_sound_enabled = enabled ? 1 : 0;
+#else
+    (void)enabled;
+#endif
 }
 
 JNI_FN(jboolean, saveState)(JNIEnv *env, jobject obj, jstring jpath) {