Fork xmrcheckout for Wownero (WOW)

Minimal changes from upstream xmrcheckout to support Wownero:
- Rate provider: Nonlogs WOW-BTC via Kraken BTC/USD
- Subaddress derivation: Wownero network byte overrides (53/63/54)
- Payment URI scheme: wownero:
- Dockerfile: Wownero binaries from Codeberg
- Display text: Monero→Wownero, XMR→WOW throughout UI
- Default daemon: 192.168.88.235:34568
- Added wownero-logo.svg

File and folder structure kept identical to upstream for easy sync.

ui/public/modal/btcpay.js

@@ -0,0 +1,136 @@
+(function () {
+  var state = {
+    baseUrl: "",
+    modal: null,
+    iframe: null,
+    handlers: [],
+  };
+
+  function normalizeBaseUrl(url) {
+    if (!url) {
+      return "";
+    }
+    try {
+      var parsed = new URL(url, window.location.href);
+      var path = parsed.pathname.replace(/\/api\/v1\/?$/, "").replace(/\/api\/?$/, "");
+      var normalized = parsed.origin + path;
+      return normalized.replace(/\/$/, "");
+    } catch (error) {
+      return String(url).replace(/\/$/, "");
+    }
+  }
+
+  function resolveInvoiceUrl(invoiceId) {
+    var base = state.baseUrl || "";
+    if (!base) {
+      base = "";
+    }
+    base = base.replace(/\/$/, "");
+    return base + "/i/" + encodeURIComponent(invoiceId);
+  }
+
+  function ensureModal() {
+    if (state.modal) {
+      return;
+    }
+    var overlay = document.createElement("div");
+    overlay.setAttribute("data-btcpay-modal", "true");
+    overlay.style.position = "fixed";
+    overlay.style.inset = "0";
+    overlay.style.display = "none";
+    overlay.style.alignItems = "center";
+    overlay.style.justifyContent = "center";
+    overlay.style.background = "rgba(16, 18, 23, 0.6)";
+    overlay.style.zIndex = "2147483647";
+    overlay.style.padding = "24px";
+
+    var container = document.createElement("div");
+    container.style.position = "relative";
+    container.style.width = "min(92vw, 520px)";
+    container.style.height = "min(86vh, 720px)";
+    container.style.background = "#f8f2e9";
+    container.style.borderRadius = "20px";
+    container.style.boxShadow = "0 24px 50px rgba(16, 18, 23, 0.35)";
+    container.style.overflow = "hidden";
+
+    var iframe = document.createElement("iframe");
+    iframe.setAttribute("title", "Payment request");
+    iframe.style.width = "100%";
+    iframe.style.height = "100%";
+    iframe.style.border = "0";
+    iframe.style.background = "transparent";
+    iframe.allow = "clipboard-read; clipboard-write";
+
+    container.appendChild(iframe);
+    overlay.appendChild(container);
+    document.body.appendChild(overlay);
+
+    overlay.addEventListener("click", function (event) {
+      if (event.target === overlay) {
+        hideFrame();
+      }
+    });
+
+    state.modal = overlay;
+    state.iframe = iframe;
+  }
+
+  function showInvoice(invoiceId) {
+    if (!invoiceId) {
+      return;
+    }
+    ensureModal();
+    if (!state.modal || !state.iframe) {
+      return;
+    }
+    state.iframe.src = resolveInvoiceUrl(invoiceId);
+    state.modal.style.display = "flex";
+  }
+
+  function hideFrame() {
+    if (!state.modal) {
+      return;
+    }
+    state.modal.style.display = "none";
+  }
+
+  function onModalReceiveMessage(callback) {
+    if (typeof callback !== "function") {
+      return;
+    }
+    state.handlers.push(callback);
+  }
+
+  function allowMessage(event) {
+    if (!state.baseUrl) {
+      return true;
+    }
+    try {
+      var origin = new URL(state.baseUrl, window.location.href).origin;
+      return event.origin === origin;
+    } catch (error) {
+      return false;
+    }
+  }
+
+  window.addEventListener("message", function (event) {
+    if (!allowMessage(event)) {
+      return;
+    }
+    state.handlers.forEach(function (handler) {
+      try {
+        handler(event);
+      } catch (error) {
+        return;
+      }
+    });
+  });
+
+  window.btcpay = window.btcpay || {};
+  window.btcpay.setApiUrlPrefix = function (baseUrl) {
+    state.baseUrl = normalizeBaseUrl(baseUrl);
+  };
+  window.btcpay.showInvoice = showInvoice;
+  window.btcpay.hideFrame = hideFrame;
+  window.btcpay.onModalReceiveMessage = onModalReceiveMessage;
+})();

ui/public/monero-logo.svg

@@ -0,0 +1 @@
+<svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 3756.09 3756.49"><title>monero</title><path d="M4128,2249.81C4128,3287,3287.26,4127.86,2250,4127.86S372,3287,372,2249.81,1212.76,371.75,2250,371.75,4128,1212.54,4128,2249.81Z" transform="translate(-371.96 -371.75)" style="fill:#fff"/><path id="_149931032" data-name=" 149931032" d="M2250,371.75c-1036.89,0-1879.12,842.06-1877.8,1878,0.26,207.26,33.31,406.63,95.34,593.12h561.88V1263L2250,2483.57,3470.52,1263v1579.9h562c62.12-186.48,95-385.85,95.37-593.12C4129.66,1212.76,3287,372,2250,372Z" transform="translate(-371.96 -371.75)" style="fill:#f26822"/><path id="_149931160" data-name=" 149931160" d="M1969.3,2764.17l-532.67-532.7v994.14H1029.38l-384.29.07c329.63,540.8,925.35,902.56,1604.91,902.56S3525.31,3766.4,3855,3225.6H3063.25V2231.47l-532.7,532.7-280.61,280.61-280.62-280.61h0Z" transform="translate(-371.96 -371.75)" style="fill:#4d4d4d"/></svg>

ui/public/wownero-logo.svg

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 26.0.1, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="svg898" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 64 64" style="enable-background:new 0 0 64 64;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#FF2AD4;}
+	.st1{fill:#FFFFFF;}
+	.st2{fill:#FFCC00;}
+</style>
+<path id="path6" class="st0" d="M61.5,19.5C54.6,3.3,35.8-4.3,19.5,2.5s-23.9,25.7-17,41.9s25.7,23.9,41.9,17
+	c7.7-3.2,13.8-9.3,17-17C64.8,36.5,64.8,27.5,61.5,19.5z"/>
+<path class="st1" d="M7.4,26.3h8.2v15.6v6.4l4.6-4.4l11.9-11.2l11.8,11.2l4.6,4.4v-6.4l0-15.6h8.1c0.4,1.8,0.6,3.7,0.6,5.6
+	c0,13.9-11.3,25.3-25.2,25.3S6.7,45.8,6.7,31.9C6.7,30,6.9,28.1,7.4,26.3 M5.3,23.5C0.7,38.3,8.9,54,23.7,58.6s30.5-3.7,35-18.4
+	c0.8-2.7,1.3-5.5,1.3-8.3c0-2.8-0.4-5.6-1.3-8.4H45.8l-0.1,18.4L32.1,28.8L18.3,41.9V23.5H5.3z"/>
+<path class="st2" d="M18.3,20.8H21v2.8v12l9.1-8.7l1.9-1.8l1.9,1.8l9.1,8.6v-12v-2.7h14.7C51.5,6.6,34.9,0.2,20.8,6.4
+	c-6.4,2.8-11.6,8-14.4,14.4H18.3z"/>
+</svg>