Move project from bordanlage/ to repo root

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

dashboard/src/components/nav/ChartPlaceholder.jsx

@@ -0,0 +1,37 @@
+import { useNMEA } from '../../hooks/useNMEA.js'
+
+export default function ChartPlaceholder() {
+  const { lat, lon } = useNMEA()
+  const signalkHost = import.meta.env.VITE_SIGNALK_HOST || 'localhost'
+
+  // SignalK has a built-in chart viewer
+  const chartUrl = `http://${signalkHost}:3000/@signalk/freeboard-sk/`
+
+  return (
+    <div style={styles.container}>
+      <iframe
+        src={chartUrl}
+        style={styles.iframe}
+        title="Chart"
+        onError={() => {}}
+      />
+      {lat != null && (
+        <div style={styles.coords}>
+          <span style={styles.coord}>{lat.toFixed(5)}°N</span>
+          <span style={styles.coord}>{lon.toFixed(5)}°E</span>
+        </div>
+      )}
+    </div>
+  )
+}
+
+const styles = {
+  container: { position: 'relative', flex: 1, borderRadius: 'var(--radius)', overflow: 'hidden', border: '1px solid var(--border)' },
+  iframe: { width: '100%', height: '100%', border: 'none', background: 'var(--surface2)' },
+  coords: {
+    position: 'absolute', bottom: 12, left: 12,
+    background: '#07111fcc', borderRadius: 6, padding: '6px 10px',
+    display: 'flex', gap: 12,
+  },
+  coord: { fontFamily: 'var(--font-mono)', fontSize: 12, color: 'var(--accent)' },
+}