Swaps: add coinos staging (mutinynet) Boltz provider

Point mutinynet wallets at the new self-hosted staging Boltz backend
(swap-staging.coinos.io) by default, instead of mainnet api.boltz.exchange.
Backend: dedicated boltz CLN + shared mut bitcoind on cs, behind a CORS shim
+ cloudflared.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/api.js b/src/api.js
index 186a0ca..64ff331 100644
--- a/src/api.js
+++ b/src/api.js
@@ -145,6 +145,7 @@ function nk(base, net) { return net === 'mainnet' ? base : `${base}:${net}`; }
 // way: a provider can fail a swap but never steal (we claim/refund on-chain).
 export const BOLTZ_PRESETS = [
   { id: 'local', label: 'Local (regtest)', api: '/boltz', ws: 'ws://localhost:9004/v2/ws' },
+  { id: 'staging', label: 'coinos staging (mutinynet)', api: 'https://swap-staging.coinos.io', ws: 'wss://swap-staging.coinos.io/v2/ws' },
   { id: 'boltz', label: 'Boltz Exchange', api: 'https://api.boltz.exchange' },
   { id: 'middleway', label: 'Middle Way', api: 'https://api.middle-way.space' },
   { id: 'zeus', label: 'ZEUS Swaps', api: 'https://swaps.zeuslsp.com/api' },
@@ -163,7 +164,8 @@ export function setBoltzCustom({ api, ws }) {
 }
 export function getBoltzProviderId() {
   try { const id = localStorage.getItem(BOLTZ_PROVIDER_KEY); if (id && BOLTZ_PRESETS.some((p) => p.id === id)) return id; } catch {}
-  return getNetwork() === 'regtest' ? 'local' : 'boltz'; // default per network
+  const net = getNetwork(); // default per network
+  return net === 'regtest' ? 'local' : net === 'mutinynet' ? 'staging' : 'boltz';
 }
 export function setBoltzProviderId(id) { try { localStorage.setItem(BOLTZ_PROVIDER_KEY, id); } catch {} }