feat(mobile,api): customizable notification alert sounds and critical alarms

[abarghoud]

Summary

Allows users to personalize their push notification alert tone and introduces critical intrusion alarms designed to reliably wake or alert users during security events.

What's New

• Customizable Alert Tones: Users can now select their preferred alert sound directly from the mobile app settings.
• 5 Distinct Audio Profiles:
  • Sentry Siren: High-urgency intrusion siren tone (default)
  • Cyber Pulse: Modern electronic vehicle chirp bursts
  • Tesla Horn: Distinct automotive dual-honk sound
  • Danger Sonar: Deep sonar ping followed by rapid warning blips
  • Klaxon Alarm: Classic naval emergency alarm tone
• In-App Sound Preview: Tap to play and stop any sound before saving your selection.
• Critical Security Alerts: Critical break-in events can break through Do Not Disturb and silent mode with high-priority audible alerts when enabled.
• Synchronized User Preferences: The chosen sound is saved to the user account and applied automatically to push notifications sent to the device.