clearPodCacheOnly method
Clears only Pod-related cache, preserves local places structure allPlaces cache is cleared because it contains merged data.
Implementation
void clearPodCacheOnly() {
_allPlacesCache = null; // Clear merged cache (will be rebuilt)
_podPlacesCache = null; // Clear Pod cache
_lastCacheTime = null;
_wasLoggedInWhenCached = null;
// Note: Local places are cached in PlacesService._cachedLocalPlaces, not here.
}