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/indicators/macd.js

@@ -0,0 +1,60 @@
+import { MA } from './ma.js';
+import { BaseIndicator } from './base.js';
+
+export class MACDIndicator extends BaseIndicator {
+    calculate(candles) {
+        const fast = this.params.fast || 12;
+        const slow = this.params.slow || 26;
+        const signal = this.params.signal || 9;
+        
+        const fastEma = MA.ema(candles, fast, 'close');
+        const slowEma = MA.ema(candles, slow, 'close');
+        
+        const macdLine = fastEma.map((f, i) => (f !== null && slowEma[i] !== null) ? f - slowEma[i] : null);
+        
+        const signalLine = new Array(candles.length).fill(null);
+        const multiplier = 2 / (signal + 1);
+        let ema = 0;
+        let sum = 0;
+        let count = 0;
+        
+        for (let i = 0; i < macdLine.length; i++) {
+            if (macdLine[i] === null) continue;
+            count++;
+            if (count < signal) {
+                sum += macdLine[i];
+            } else if (count === signal) {
+                sum += macdLine[i];
+                ema = sum / signal;
+                signalLine[i] = ema;
+            } else {
+                ema = (macdLine[i] - ema) * multiplier + ema;
+                signalLine[i] = ema;
+            }
+        }
+        
+        return macdLine.map((m, i) => ({
+            macd: m,
+            signal: signalLine[i],
+            histogram: (m !== null && signalLine[i] !== null) ? m - signalLine[i] : null
+        }));
+    }
+    
+    getMetadata() {
+        return {
+            name: 'MACD',
+            description: 'Moving Average Convergence Divergence - trend & momentum',
+            inputs: [
+                { name: 'fast', label: 'Fast Period', type: 'number', default: 12 },
+                { name: 'slow', label: 'Slow Period', type: 'number', default: 26 },
+                { name: 'signal', label: 'Signal Period', type: 'number', default: 9 }
+            ],
+            plots: [
+                { id: 'macd', color: '#2196f3', title: 'MACD' },
+                { id: 'signal', color: '#ff5722', title: 'Signal' },
+                { id: 'histogram', color: '#607d8b', title: 'Histogram', type: 'histogram' }
+            ],
+            displayMode: 'pane'
+        };
+    }
+}