Fix network-aware config resolution across read and legacy command paths

[shrey32]

Summary

This PR finishes the network-resolution cleanup so explicit chain labels and runtime network overrides are consistently authoritative across command families.

What changed

• fixed read paths to resolve transport and RLUSD metadata from the requested network

  • price
  • market
  • top-level tx status
  • top-level tx history

• fixed XRPL command paths that were still mixing resolved network selection with ambient config

  • xrpl trustline status
  • xrpl pathfind
  • xrpl dex
  • xrpl amm

• fixed balance reads so explicit labels like ethereum-sepolia and xrpl-testnet use the correct network and chain label in output

• fixed legacy Curve wrappers to keep venue-specific mainnet routing aligned with the config/public client they use underneath

  • eth swap
  • eth lp

• cleaned up unit test noise in cli.test.ts

Tests

• added and expanded regression coverage in:
  • test/unit/network-resolution.test.ts
  • test/unit/eth-swap.test.ts
  • test/unit/eth-lp.test.ts