papyrus_android 0.1.0

Android System WebView implementation for Papyrus.

0.1.0

• Initial release.
• Android System WebView backend for the Papyrus federated plugin.
• Maps PapyrusSecurityPolicy, navigation policy, and resource interception to Android WebView APIs using the native Flutter platform-view path.
• shouldInterceptRequest runs on a background thread; resource interception bridge dispatches to the main thread via Handler.post.
• Supports ephemeral storage, file-access constraints, dark-mode hint, mixed-content policy, download interception, and permission requests.