feat: notification ringtone and settings overhaul

[williscool]

Android 8+: Tapping "Notification Ringtone" opens the system channel
settings where users can configure the sound

Android 7.x: Continues to use the ringtone picker (existing behavior)
System settings: Now shows channels organized into Main, Alarm, and
Silent groups instead of all under "Other"

fixes #145 fixes #135

---

Note

Modernizes notification sounds and channel structure.

• Adds channel groups group_main, group_alarm, group_silent and assigns existing channels accordingly in NotificationChannels; creates groups before channels
• Introduces NotificationSoundPreference that on Android 8+ opens system ACTION_CHANNEL_NOTIFICATION_SETTINGS for a given channelId, and on Android 7.x uses the ringtone picker; updates summaries to show current sound
• Updates NotificationSettingsFragmentX and ReminderSettingsFragmentX to use NotificationSoundPreference, handle activity results, refresh summaries on resume, and add links to system app notification settings
• Adds helper APIs getChannelSoundUri and getChannelSoundTitle to read channel sound info
• Updates XML (notification_preferences_x.xml, reminder_preferences_x.xml) and resources (attrs.xml, strings.xml) for new preference, channel groups, and labels
• Expands Robolectric tests to verify group creation/assignments and sound helper behavior, keeping channel creation idempotent

^{Written by Cursor Bugbot for commit 7af0b41. This will update automatically on new commits. Configure here.}

[github-actions]

Code Coverage Report

Overall Project	32.63% -0.45%	🍏
Files changed	47.27%	❌

Module	Coverage
app	44.06% -0.47%	❌
x8664Debug	21.44% -0.43%	❌

Files

Module	File	Coverage
app	NotificationChannels.kt	89.28% -7.54%	🍏
	NotificationSoundPreference.kt	34.15% -58.23%	❌
	NotificationSettingsFragmentX.kt	17.84% -37.84%	❌
	ReminderSettingsFragmentX.kt	0% -37.96%	❌
x8664Debug	NotificationChannels.kt	92.17% -7.83%	🍏
	NotificationSoundPreference.kt	34.76% -57.62%	❌
	ReminderSettingsFragmentX.kt	24.09% -23.36%	❌
	NotificationSettingsFragmentX.kt	17.84% -37.84%	❌

[github-actions]

📊 Code Coverage Summary

Coverage Type	Coverage
Overall	null
Changed Files	100

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[github-actions]

Build artifacts for PR #148 (commit a89c806) are available:

• Debug APKs (arm64-v8a, x86_64)
• Release APKs (arm64-v8a, x86_64)
• AAB

You can download these artifacts from the "Artifacts" section of the workflow run.

[github-actions]

📊 Code Coverage Summary

Coverage Type	Coverage
Overall	21.45
Changed Files	50.3

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[github-actions]

Build artifacts for PR #148 (commit b528966) are available:

• Debug APKs (arm64-v8a, x86_64)
• Release APKs (arm64-v8a, x86_64)
• AAB

You can download these artifacts from the "Artifacts" section of the workflow run.

[github-actions]

Build artifacts for PR #148 (commit 554f4bc) are available:

• Debug APKs (arm64-v8a, x86_64)
• Release APKs (arm64-v8a, x86_64)
• AAB

You can download these artifacts from the "Artifacts" section of the workflow run.

[github-actions]

📊 Code Coverage Summary

Coverage Type	Coverage
Overall	30.91
Changed Files	47.79

View detailed coverage report

[github-actions]

📊 Code Coverage Summary

Coverage Type	Coverage
Overall	32.63
Changed Files	47.79

View detailed coverage report