Initial commit - BTC Trading Dashboard

- FastAPI backend with PostgreSQL database connection
- Frontend dashboard with lightweight-charts
- Technical indicators (SMA, EMA, RSI, MACD, Bollinger Bands, etc.)
- Trading strategy simulation and backtesting
- Database connection to NAS at 20.20.20.20:5433
- Development server setup and documentation

src/api/dashboard/static/js/ui/sidebar.js

@@ -0,0 +1,23 @@
+export function toggleSidebar() {
+    const sidebar = document.getElementById('rightSidebar');
+    sidebar.classList.toggle('collapsed');
+    localStorage.setItem('sidebar_collapsed', sidebar.classList.contains('collapsed'));
+    
+    // Resize chart after sidebar toggle
+    setTimeout(() => {
+        if (window.dashboard && window.dashboard.chart) {
+            const container = document.getElementById('chart');
+            window.dashboard.chart.applyOptions({
+                width: container.clientWidth,
+                height: container.clientHeight
+            });
+        }
+    }, 350); // Wait for CSS transition
+}
+
+export function restoreSidebarState() {
+    const collapsed = localStorage.getItem('sidebar_collapsed') === 'true';
+    if (collapsed) {
+        document.getElementById('rightSidebar').classList.add('collapsed');
+    }
+}