📊 Implement SubscriptionDetail screen

[Smartdevs17]

Problem

The navigation references a SubscriptionDetail screen that does not exist, causing crashes when users try to view subscription details.

Context

Users cannot view detailed information about their subscriptions, reducing the app's usefulness.

Proposed Solution

Create the SubscriptionDetail screen:

1. Display full subscription details (name, price, next billing, category)
2. Show payment history if available
3. Allow pause/resume/cancel actions
4. Display associated crypto stream if applicable

Acceptance Criteria

• Screen renders with all subscription details
• Payment history section (if data available)
• Pause button pauses subscription
• Resume button resumes subscription
• Cancel button with confirmation dialog
• Back navigation works correctly

Technical Notes

New File: src/screens/SubscriptionDetailScreen.tsx
Navigation: src/navigation/AppNavigator.tsx
Types: src/types/subscription.ts

Constraints

• Must handle subscription not found error
• Loading state while fetching details
• Offline handling

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[devdianax]

@devdianax has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

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Congratulations, @devdianax! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on March 30, 2026.

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This issue has been completed by @devdianax as part of the Stellar Wave Program's 3rd Wave 🥳

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