fix: release.sh clears Metro + Gradle cache before build (version consistency)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

release.sh

@@ -76,8 +76,11 @@ echo -e "  ${GREEN}✓${NC} SettingsScreen → Version $VERSION"
 echo ""
 
 # ── APK bauen ─────────────────────────────────
-echo -e "${GREEN}[2/5] APK bauen...${NC}"
+echo -e "${GREEN}[2/5] APK bauen (Cache leeren + Build)...${NC}"
 cd android
+# Metro + Gradle Cache leeren damit neue Version sauber eingebettet wird
+rm -rf node_modules/.cache 2>/dev/null
+cd android && ./gradlew clean 2>/dev/null; cd ..
 ./build.sh release
 cd ..