Add audio support to WebRTC video player with mute/unmute controls

[Copilot]

Summary

Enables audio playback in the native WebRTC video player and adds mute/unmute controls. The previous implementation had audio disabled via useManualAudio = true to avoid microphone permission requests.

Key changes:

• Audio session configuration: Uses AVAudioSession.Category.playback for receive-only audio (no microphone access required)
• Remote audio track management: Properly extracts audio track from peer connection transceivers after remote SDP is set
• Mute/unmute UI: Added button at bottom-left of player using SF Symbols (speaker.wave.fill / speaker.slash.fill)
• State synchronization: ViewModel mute state always reflects actual audio track state

Technical details:

// Audio session configured for playback only
audioSession.setCategory(AVAudioSession.Category.playback.rawValue)
audioSession.setMode(AVAudioSession.Mode.spokenAudio.rawValue)

// Remote audio track extracted after SDP negotiation
remoteAudioTrack = peerConnection.transceivers
    .first(where: { $0.mediaType == .audio })?
    .receiver.track as? RTCAudioTrack

The implementation removes microphone-related warnings from the experimental disclaimer.

Screenshots

N/A - Audio feature, no visual changes beyond the mute button icon which follows existing control patterns.

Link to pull request in Documentation repository

Documentation: home-assistant/companion.home-assistant#

Any other notes

Audio mode uses .spokenAudio for optimal voice/camera audio playback. The mute button follows the same auto-hide behavior as other player controls (3-second timeout).

Original prompt

Let's start supporting audio on WebRTCVideoPlayerView, including control mute/unmute

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[bgoncal]

This change will be reverted by Lokalise. But at this moment it's fine, the current copy is better for the moment in time.

[Copilot]

Pull request overview

This PR adds audio playback support to the native WebRTC video player with mute/unmute controls. The previous implementation had audio disabled to avoid microphone permission requests. The implementation properly configures the audio session for receive-only playback, extracts the remote audio track after SDP negotiation, and provides UI controls for muting/unmuting.

Key changes:

• Audio session configured for playback-only mode (.playback category with .spokenAudio mode) to receive audio without requiring microphone access
• Remote audio track management added with proper extraction from peer connection transceivers after remote SDP is set
• Mute/unmute button added to video player controls with iOS 26.0+ glass effect styling

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
Sources/App/WebView/WebRTC/WebRTCClient.swift	Adds audio session configuration, remote audio track management, and mute/unmute methods
Sources/App/WebView/WebRTC/WebRTCViewPlayerViewModel.swift	Adds isMuted state and toggleMute() method for audio control
Sources/App/WebView/WebRTC/WebRTCVideoPlayerViewControls.swift	Adds mute/unmute button with speaker icons to player controls
Sources/App/WebView/WebRTC/WebRTCVideoPlayerView.swift	Integrates mute state and toggle action into controls view
Sources/Shared/DesignSystem/Components/ModalCloseButton.swift	Adds iOS 26.0+ glass effect styling with conditional padding
Sources/Shared/Resources/Swiftgen/Strings.swift	Updates experimental disclaimer text to remove microphone-related warnings
Sources/App/Resources/en.lproj/Localizable.strings	Updates experimental disclaimer localization string

[codecov]

Codecov Report

❌ Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@d29319d). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...red/DesignSystem/Components/ModalCloseButton.swift	0.00%	7 Missing ⚠️

Additional details and impacted files

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