Added #

• Initial release of the native_googleads Flutter plugin.
• Android and iOS implementations using native SDKs (Kotlin/Swift).
• Interstitial and rewarded ads with lifecycle callbacks.
• Banner and native ads with platform views.
• Helper widgets: BannerAdWidget and NativeAdWidget.
• Configuration via AdConfig and AdRequestConfig.
• Built-in Google test ad unit IDs and example app.

Added #

• Preloaded rendering support for widgets:
  • BannerAdWidget(preloadedBannerId: ...)
  • NativeAdWidget(preloadedNativeAdId: ...)
• Production/test ID validation policy in Dart:
  • Warn or throw on Google test IDs in release; configurable via setAdIdValidationPolicy.
• New example pages: Preloaded Banner, Preloaded Native, and Preloaded Fullscreen Ads; UI overflow fixes and graceful failure handling.

Changed #

• README and example docs updated to remove unimplemented features and reflect current APIs.
• Example: renamed UI actions to “Preload” for interstitial/rewarded; removed Multi-Preload Manager demo.

Tests #

• Unit tests for validation policy behavior (warn-only, strict, and disabled modes).