fix: set block explorer URL after successful transaction

[pete-watters]

Summary & Motivation

The wallet screen includes a "View on Block Explorer" button that is rendered conditionally when transactionExplorer is set. After a successful transaction, the code sets this to null, so the button never appears.

To fix this, I changed it to set transactionExplorer to the Solscan URL using the transaction signature, consistent with how the constants package defines Solana explorer URLs in NETWORK_CONFIGS.

How I Tested These Changes

I tested this purely using code type checks. result.signature is already used in the success message on the line above — this just passes it to a Solscan URL instead of discarding it.

To manually test it I got the APP running locally and set up a project on the developer portal however I am continually seeing an error that 'The redirect URI 'phantom-rn-demo://phantom-auth-callback' is not whitelisted for this application.

Did you add a changeset?

This change is isolated to the examples so I did not add a changeset - no package code is modified.

Did you update the README files?

I did not, as this is adding a bug fix

Summary by CodeRabbit

• Bug Fixes
  • Enhanced transaction confirmation flow. The wallet now displays a Solscan blockchain explorer link with the transaction signature after successful transactions, enabling users to immediately access and verify detailed transaction confirmation and on-chain status rather than displaying an empty field.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 3f28dccd-ad56-49f7-88ae-9f45691bdc0e

📥 Commits

Reviewing files that changed from the base of the PR and between facd553 and ddaa720.

📒 Files selected for processing (1)

• examples/react-native-sdk-demo-app/app/wallet.tsx

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📝 Walkthrough

Walkthrough

A single file update in the React Native SDK demo app where the transaction explorer URL is now populated with a Solscan link based on the transaction signature after successful transactions, rather than being cleared to null.

Changes

Cohort / File(s)	Summary
Transaction Explorer URL Handling examples/react-native-sdk-demo-app/app/wallet.tsx	Modified transaction success handler to set the explorer URL to a Solscan link using the transaction signature instead of clearing it to null.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: setting the block explorer URL instead of clearing it after a successful transaction.
Description check	✅ Passed	The description follows the template structure with all required sections completed: Summary & Motivation clearly explains the fix, How I Tested These Changes details the testing approach, and responses to changeset and README questions are provided.

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[garlobrian52]

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