[Code quality] useStellarNetwork hook duplicates config access pattern

[nonsobethel0-dev]

Description

The useStellarNetwork hook duplicates logic that already exists in the config utility. Multiple ways to access network config creates confusion.

Current behavior

Two different ways to get network configuration.

Expected behavior

Consolidate into a single pattern for accessing network config.

Files

• hooks/useStellarNetwork.ts
• lib/config.ts

Impact

Developer confusion about which method to use.