Implement subscription notification preferences and management

[Smartdevs17]

Description

Build a notification preference center allowing users to control subscription-related notifications (renewal reminders, payment confirmations, dunning warnings) by channel and frequency.

Acceptance Criteria

• Notification preference management UI
• Channel selection (push, email, SMS, in-app)
• Frequency control (immediate, daily digest, weekly summary)
• Opt-in/opt-out per notification type
• Quiet hours configuration
• Notification delivery analytics

Technical Scope

• src/hooks/useNotifications.ts
• src/services/notificationService.ts
• src/screens/SettingsScreen.tsx
• Edge: notification delivery guarantee, spam prevention, preference sync across devices

[rohan911438]

@rohan911438 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Would love to work on it

ℹ️ Repo Maintainers: To accept this application, review their application or assign @rohan911438 to this issue.

[drips-wave]

Congratulations, @rohan911438! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @rohan911438: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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🌊 Happy Wave 🌊

[drips-wave]

This issue has been completed by @rohan911438 as part of the Stellar Wave Program's 5th Wave 🥳

😎 @rohan911438: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

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