feat(mobile): implement claim success screen and sender dashboard

[A6dulmalik]

Summary

• add a dedicated claim success confirmation screen with animation, transaction summary, share action, explorer link, and done navigation
• add a sender dashboard screen with transfer summary cards, recent activity list, create transfer CTA, and loading skeleton states
• wire mobile navigation for new send and claim/success routes and redirect onboarded users to sender dashboard

Issue links

Closes #52
Closes #53
Closes #52
Closes #53

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