Improves audio player functionality and configuration

[RedC4ke]

Updates the audio player to improve functionality and configuration options.

• Forwards the rewind/fast-forward interval configuration to the system media controls, ensuring the configured values are used instead of the defaults.
• Simplifies the internal playback state stream by adding .distinct() to prevent redundant emissions, optimizing performance.

[Copilot]

Pull request overview

This PR updates the mt_audio public API and internal streaming to improve playback control behavior and reduce redundant state emissions, while updating docs/examples to match the new API.

Changes:

• Forward ffRewindInterval into AudioServiceConfig so system media controls use the configured seek interval.
• Replace MtAudioSource (and setSource) with explicit setAudioItem / setPlaylist APIs across library + examples/docs.
• Simplify playback state stream wiring and apply .distinct() to reduce redundant emissions.

Reviewed changes

Copilot reviewed 14 out of 16 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
pubspec.lock	Updates transitive dependency lockfile entries.
lib/src/player/mt_audio_player.dart	Forwards seek intervals into AudioServiceConfig; simplifies playback state stream and adds setAudioItem/setPlaylist.
lib/src/models/mt_audio_source.dart	Removes the sealed MtAudioSource model hierarchy (breaking change).
lib/src/handler/mt_audio_handler.dart	Adds setItem/setPlaylist; forwards player errors into errorStream; renames Android Auto delegate field.
lib/src/carplay/mt_carplay_delegate.dart	Updates documentation snippet to new setAudioItem API.
lib/src/android_auto/mt_android_auto_delegate.dart	Updates documentation snippet to new setAudioItem API.
lib/mt_audio.dart	Stops exporting removed mt_audio_source.dart.
example/pubspec.lock	Updates example lockfile (path package version + transitive lock).
example/lib/providers/example_carplay_delegate.dart	Migrates example delegate to setAudioItem / setPlaylist.
example/lib/providers/example_android_auto_delegate.dart	Migrates example delegate to setAudioItem.
example/lib/pages/queue_page.dart	Migrates example UI to setPlaylist.
example/lib/pages/home_page.dart	Migrates example UI to new source-loading methods and renames helper.
README.md	Updates package positioning + usage examples to new API and new install version text.
CLAUDE.md	Updates internal module notes to reflect the new two-method source API.
CHANGELOG.md	Adds a 0.2.0-beta.3 entry describing the breaking changes and fixes.
.github/workflows/publish.yml	Expands tag trigger patterns to include prerelease-style tags.

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[Copilot]

README now instructs installing mt_audio: ^0.2.0-beta.3, but pubspec.yaml in this repo still declares version: 0.2.0-beta.2. Either bump the package version (and regenerate locks) or keep the README version aligned with the actual package version to avoid publishing/install confusion.

[Copilot]

CHANGELOG introduces a 0.2.0-beta.3 entry, but the package pubspec.yaml still declares version: 0.2.0-beta.2. Please align the changelog entry with the actual package version being released (or bump pubspec.yaml accordingly) so tags/publishing and user expectations match.

[Copilot]

The tag filters here use GitHub Actions glob patterns (not regex). Patterns like "v[0-9]+.[0-9]+.[0-9]+-" treat '+' as a literal character and are unlikely to match normal semver tags (and '' is unnecessary). Consider switching to glob-appropriate patterns (e.g., v[0-9].[0-9].[0-9]- or v*..-*), and likewise updating the non-suffixed tag pattern for consistency.

Suggested change

	- "v[0-9]+.[0-9]+.[0-9]+"
	- "v[0-9]+.[0-9]+.[0-9]+-**"
	- "v[0-9]*.[0-9]*.[0-9]*"
	- "v[0-9]*.[0-9]*.[0-9]*-*"

[Copilot]

This new _player.errorStream.listen(...) subscription isn’t stored/cancelled, and dispose() closes _errorSubject before calling _player.dispose(). That creates a race where an error event can arrive during disposal (or before _player.dispose() runs) and attempt _errorSubject.add(...) after the subject is closed, throwing a bad state error. Store the subscription and cancel it in dispose(), or reorder disposal so the player is disposed (or listeners cancelled) before closing the subjects.