[akargi]

Summary

Implements issue #70 (pre-flight balance checks in placeOrder) and issue #71 (Horizon client singleton reacting to config changes) as two focused commits on one feature branch.

Issue #71 — Horizon client (src/lib/stellar/horizon.ts, src/lib/stellar/dex.ts)

• Replaced the module-load singleton with getHorizonClient() that caches by stellarConfig.horizonUrl and recreates the client when the URL changes
• Added
  esetHorizonClient() for tests / config reloads; kept the deprecated horizon Proxy export (delegates to the getter) so existing import { horizon } callers keep working but never see a stale endpoint
• Internal callers (�ccountExists, getBalances, submitTransaction, DEX builders) now go through getHorizonClient(); documents that stellarConfig is static after startup

Issue #70 — placeOrder pre-validation (src/services/tradeService.ts)

• Early param validation (amount/price/address) before any network call
• Pre-flight checks via checkOrderBalance before trustline/offer construction: XLM for buy (amount*price + fees) and asset + XLM-for-fees for sell, with clear per-side error messages including shortfalls
• checkOrderBalance now returns the fetched �alances so placeOrder reuses them instead of fetching twice; no trustline/offer tx is built or signed for doomed orders

Closes #70
Closes #71

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Project	Deployment	Actions	Updated
inter-changabletrade-fricks	Ready	Preview	Nov 9, 2026 5:25am UTC