Initial release.

Features #

• AutoSaveTextEditingController — a drop-in TextEditingController replacement that automatically persists and restores text drafts.
• AutoSaveController typedef — a concise alias for AutoSaveTextEditingController to reduce boilerplate in consuming code.
• Debounce — configurable debounceDuration (default 500 ms) prevents excessive write operations during active typing.
• TTL (Time-To-Live) — optional maxDraftAge automatically expires and deletes stale drafts on load.
• AppLifecycle awareness — pending debounce timers are flushed immediately when the app becomes inactive, paused, or detached, preventing draft loss.
• Storage-agnostic design — the AutoSaveStorage abstract interface decouples the controller from any specific storage backend; bring your own implementation.
• Global configuration — AutoSave.init(storage:) registers a single-instance fallback storage used by all controllers that do not provide their own storage argument.
• Per-controller injection — pass a storage argument directly to the constructor to override the global instance on a per-controller basis.
• Length guard — maxDraftLength (default 10 000 chars) silently skips saves for oversized drafts without deleting previously saved content.
• Empty-text guard — saving an empty text field deletes the stored draft, keeping storage clean.
• Priority control — prioritizeDraftOverInitial governs whether a restored draft overwrites an explicitly provided initial text value.
• clearDraft() — programmatically deletes the persisted draft and resets the text field in one call.
• Zero third-party dependencies — only the Flutter SDK is required.