Implement one-tap SOS emergency button for guards

[SanjayaGrg]

Summary

Implemented the one-tap SOS emergency feature for guards in the SecureShift guard app.

What changed

• Added emergency-style SOS UI with red button, warning icon, and SOS label.
• Added SOS confirmation bottom sheet to reduce accidental emergency triggers.
• Implemented “Slide to send SOS” interaction.
• Fixed slider behavior so incomplete swipes return back to the start.
• Added navigation from SOS confirmation flow to the new Active SOS screen.
• Integrated local SOS testing flow using mock SOS logic.
• Added guard profile details from /users/me into local SOS console data.
• Logged SOS event data locally with guard details, location, timestamp, and emergency contact information.
• Kept SOS testing local only for now and did not trigger any real government/emergency service.

Testing

• Ran Prettier formatting check successfully.
• Ran lint and confirmed no blocking SOS implementation issues except existing project-wide warnings.
• Tested SOS button opening the confirmation sheet.
• Tested slide-to-send interaction.
• Tested navigation to Active SOS screen.
• Tested local SOS data console logging.

Notes

This implementation is currently local/mock-based for safety. Real backend supervisor dashboard integration can be connected later once backend SOS endpoints and dashboard alert handling are ready.

Screenshots