Improve wallet session recovery and error handling

[Kalebtron1]

Why this matters

Session resilience reduces user drop-off and lowers support overhead.

Problem

Wallet session recovery and error handling are inconsistent across reload and reconnect scenarios.

Scope

• Improve session restore on app reload.
• Handle expired/invalid sessions gracefully.
• Standardize high-frequency wallet error messages.

Implementation guidance

• Key files: src/hooks/useWallet.tsx, wallet-related UI feedback components.
• Reuse shared error mapping where possible.
• Keep message tone actionable and concise.

Out of scope

• New wallet provider integration.

Acceptance criteria

• Session state restores predictably after refresh.
• Frequent wallet failures show clear user guidance.

Validation

• Test reload with connected wallet.
• Test expired/disconnected scenario and verify UX.

PR requirements

• Include Closes #13.
• Include before/after behavior notes.

Complexity

• Medium (150 points)

[Gadflyxx]

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

gm maintainer would love to work on this issue

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[Ayilojay]

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

Hi Maintainer! I will like to work on this issue

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[swankybae]

@swankybae has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hello maintainer,
I would love to work on this .

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[Cerome360]

@Cerome360 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I'd like to work on #13. I read through the issue, and I like that it's focused on the user experience around wallet reliability rather than adding new functionality. Looking forward to contributing.

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[kaybie234]

@kaybie234 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi! I'd like to work on this issue because it aligns with my interest in improving user experience. I have some experience working with React and frontend applications, and I'm comfortable reading existing code to understand how wallet sessions are managed. I'll focus on implementing the required changes carefully, testing the reload and expired session scenarios, and following the project's coding standards.

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