Add n.exchange transaction icon mapping

[j0ntz]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

none

Requirements

If you have made any visual changes to the GUI. Make sure you have:

• Tested on iOS device
• Tested on Android device
• Tested on small-screen device (iPod Touch)
• Tested on large-screen device (tablet)

Description

n.exchange (nexchange) swap transactions rendered the generic "Swap Funds" icon in transaction history and details because pluginIdIcons in src/actions/CategoriesActions.ts had no entry for the nexchange plugin id. This adds that mapping so the partner icon renders.

Path note: the icon asset is served at https://content.edge.app/exchangeIcons/nexchange/icon.png (verified 200 image/png), not the flat /nexchange.png path used by EdgeApp/edge-react-gui#6075 (403). This uses the exchangeIcons/<pluginId>/icon.png convention, the same pattern already merged for nymswap in EdgeApp/edge-react-gui#6078.

Supersedes #6075 with the corrected icon path.

Testing: forced pluginIdIcons lookup to nexchange on existing swap transaction rows via a throwaway local harness (reverted before commit) and confirmed the n.exchange logo loads from the content server and renders in both the transaction list and transaction detail scene on the iOS simulator (edge-funds, My Base 4 wallet). tsc, jest, and eslint pass via verify-repo.sh. Proof screenshots attached below.

Asana task: https://app.asana.com/0/0/1214071268047343

---

Note

Low Risk
Display-only icon URL mapping with no auth, payment, or swap logic changes.

Overview
n.exchange swap rows no longer fall back to the generic swap icon in transaction list and transaction details.

Adds nexchange to pluginIdIcons in CategoriesActions.ts, loading the partner logo from exchangeIcons/nexchange/icon.png on the content server (same convention as nymswap). CHANGELOG updated under 4.50.0.

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[j0ntz]

📸 Test evidence

agent proof 1214071268047343 01 nexchange icon list

agent proof 1214071268047343 02 nexchange icon detail

Captured by the agent's in-app test run (build-and-test).

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