chore: release v0.3.0

[github-actions]

🤖 New release

• sinuous: 0.2.0 -> 0.3.0

Changelog

0.3.0 - 2026-10-16

Added

• Show the battery and Wi-Fi of each speaker in the system info
• Show the time left on the sleep timer beside the playback controls
• Set a sleep timer from the playback menu
• Add a system info screen, with the details of each speaker
• Show shuffle and repeat on either side of the playback controls
• Add a playback menu, with the crossfade toggle
• Cache album art on disk

Fixed

• Build the musl binaries, which cross failed to by not reading multi-line inline tables

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This PR was generated with release-plz.