path_provider_tvos

• Fix: getApplicationSupportDirectory() no longer returns a path that does not exist. The tvOS sandbox refuses to create Library/Application Support, and that failure was swallowed (try?), so callers received a path and only discovered the problem at their first write. It now returns null, which path_provider surfaces as MissingPlatformDirectoryException at the call site.
• Docs: corrected the claim that tvOS has "a normal app sandbox" where the standard lookups work unchanged. Verified on a physical Apple TV 4K (tvOS 26.5): only Library/Caches and tmp are writable — writes to Documents are denied, and Library/Application Support cannot be created. The tvOS simulator permits all of these, which is why this went unnoticed.
• getApplicationDocumentsDirectory() now logs a one-time warning on tvOS. The path is still returned — Documents exists and reads work — but writes to it fail on a physical Apple TV, and silently handing back a path for the most common path_provider call made that failure hard to trace.
• Behaviour change: apps calling getApplicationSupportDirectory() on tvOS now get an exception instead of an unusable path. Switch to getApplicationCacheDirectory(), and note that tvOS storage is purgeable by platform contract — durable data belongs on a server or in iCloud key-value storage.

• Add Swift Package Manager support: ships a tvos/Package.swift so the package can be consumed via SwiftPM (the Flutter 3.44 default) alongside the existing CocoaPods podspec. No API or behaviour change.

Initial release — hand-written, maintained tvOS implementation of path_provider for flutter-tvos. Upstream path_provider_foundation is a dart:ffi / native-assets plugin that the tvOS toolchain cannot build, so this package is not generated output — it is a thin native (NSSearchPath… / NSTemporaryDirectory) implementation answering the same method-channel contract.

• Supported: getTemporaryDirectory(), getApplicationDocumentsDirectory(), getApplicationSupportDirectory() (auto-created), getApplicationCacheDirectory() (auto-created), getLibraryDirectory().
• Not supported on tvOS: getDownloadsDirectory() returns null (no user Downloads dir in the tvOS sandbox); getExternalStoragePath* / getExternalCachePaths throw UnsupportedError (Android-only, same as iOS).

Verified end-to-end on a physical Apple TV via video_player_tvos (14/14 integration tests). See README.md and PORTING_REPORT.md for detail.