[Feature Request]: Sleep Timer Reset via Headphone Button

[rafaelkrysciak]

Summary

Allow users to reset the sleep timer using a headphone media button (Bluetooth or wired), providing a low-effort alternative to the existing shake-to-reset gesture.

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Problem

Shaking a phone in bed requires physical effort, finding the device in the dark, and unwanted movement right as the user is drifting off to sleep. A single headphone button click allows resetting the timer without moving or looking at a screen.

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Proposed Flow

1. Audio Warning: When 10–15 seconds remain on the sleep timer, play a subtle audio cue or fade out the volume.
2. Button Intercept: During this grace period, pressing the headphone play/pause button resets the timer instead of stopping playback.
3. Seamless Resume: Playback volume restores immediately, and the timer extends for the configured duration.

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Settings Integration

Under Settings > Sleep Timer:

• Reset Trigger: [ Shake ] | [ Headphone Button ] | [ Both ]
• Reset Duration: Duration added per trigger (e.g., +15 min or Reset to original).
• Warning Window: Length of the audio cue/fade period (e.g., 15 seconds).

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Acceptance Criteria

• Pressing the headphone button during the warning window resets the timer and restores volume.
• Works alongside or independently of the existing shake-to-reset feature.
• Retains standard media button behavior (play/pause) outside of the warning window.
• Compatible with both Bluetooth and wired headset controls.