attachment_engine_android 0.0.1-dev.1

Android implementation of attachment_engine providing native PDF, audio/video playback, download, share, and intent handling.

0.0.1-dev.1

• Initial release: the Android implementation extracted from attachment_engine 0.1.0 as part of the federated-plugin split. Implements AttachmentEnginePlatform from attachment_engine_platform_interface on top of hand-written Kotlin (Media3/ExoPlayer, PdfRenderer, WebView, HttpURLConnection-based resumable download, FileProvider-based share/open).
• Migrates every request/response native call (PDF, audio/video control, share, open-externally, paths, download start/resume/cancel) from hand-written MethodChannel string dispatch to the pigeon-generated HostApis in attachment_engine_platform_interface (Messages.g.kt). The audio/video/download event streams are unchanged, hand-written EventChannels.