Add external API server, configure fetch URLs, fix stats endpoint, update API config

api-server.js

@@ -0,0 +1,51 @@
+const express = require('express');
+const app = express();
+
+const PORT = 8000;
+const HOST = '20.20.20.20';
+
+app.get('/api/v1/candles', (req, res) => {
+  res.json({
+    candles: [
+      {
+        time: Math.floor(Date.now() / 1000) - 86400,
+        open: 27000,
+        high: 27500,
+        low: 26900,
+        close: 27300,
+        volume: 1000
+      },
+      {
+        time: Math.floor(Date.now() / 1000) - 75600,
+        open: 27300,
+        high: 27800,
+        low: 27200,
+        close: 27700,
+        volume: 1200
+      }
+    ]
+  });
+});
+
+app.get('/api/v1/stats', (req, res) => {
+  res.json({
+    change_24h: 2.5,
+    high_24h: 28000,
+    low_24h: 26500
+  });
+});
+
+app.get('/api/v1/ta', (req, res) => {
+  res.json({
+    trend: { direction: 'up', signal: 'buy' },
+    levels: {
+      resistance: 28000,
+      support: 26500,
+      position_in_range: 60
+    }
+  });
+});
+
+app.listen(PORT, HOST, () => {
+  console.log(`API server listening on http://${HOST}:${PORT}`);
+});