Initial commit: GoldQuant trading system

.gitignore

@@ -0,0 +1,8 @@
+*.exe
+*.log
+*.csv
+data.db
+web/node_modules/
+web/dist/
+.DS_Store
+*.iml

.idea/.gitignore

@@ -0,0 +1,10 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# 依赖于环境的 Maven 主目录路径
+/mavenHomeManager.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/gold.iml" filepath="$PROJECT_DIR$/gold.iml" />
+    </modules>
+  </component>
+</project>

README.md

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+# GoldQuant - 黄金/白银量化交易系统
+
+> 基于 Go + Vue.js 的黄金白银量化交易策略系统
+
+## 项目简介
+
+GoldQuant 是一个用于黄金/白银交易策略的量化分析系统，采用均值回归、黄金白银比率(GSR)阈值交易和市场状态检测(HMM)策略进行信号生成和回测分析。
+
+## 功能特性
+
+- **实时市场数据** - 从 Yahoo Finance 获取真实的黄金(GC=F)和白银(SI=F)价格数据
+- **智能策略信号** - 基于 GSR 阈值和市场状态生成交易信号
+- **回测分析** - 支持自定义参数进行策略回测，评估策略表现
+- **参数配置管理** - 保存多个策略配置文件，方便切换和对比
+- **多语言支持** - 支持中文和英文界面
+- **数据可视化** - 使用 Chart.js 展示价格走势和策略指标
+
+## 技术架构
+
+- **后端**: Go + SQLite
+- **前端**: Vue.js 3 + Chart.js + vue-i18n
+- **数据库**: SQLite
+
+## 快速开始
+
+### 1. 启动后端服务
+
+```bash
+cd gold
+go build -o goldquant.exe .
+./goldquant.exe
+```
+
+服务将在 http://localhost:8080 启动
+
+### 2. 构建前端
+
+```bash
+cd web
+npm install
+npm run build
+```
+
+## 策略参数说明
+
+| 参数 | 说明 | 默认值 |
+|------|------|--------|
+| Rolling Window | 滚动窗口天数 | 20 |
+| GSR Upper | 金银比上限阈值 (卖黄金买白银) | 80 |
+| GSR Lower | 金银比下限阈值 (买黄金卖白银) | 45 |
+| Z-Score Threshold | Z分数阈值 | 1.5 |
+| Initial Capital | 初始资金 | $10,000 |
+
+## 页面功能
+
+- **仪表盘** - 策略收益概览、价格图表、GSR走势
+- **数据管理** - 获取/清除市场数据、查看历史记录
+- **交易信号** - 查看策略生成的交易信号
+- **回测结果** - 运行回测查看策略表现
+- **设置** - 配置策略参数，保存多个配置方案
+- **系统说明** - 查看策略逻辑和系统架构
+
+## 目录结构
+
+```
+gold/
+├── main.go           # Go 后端源码
+├── go.mod            # Go 依赖
+├── data.db           # SQLite 数据库
+└── web/
+    ├── src/
+    │   ├── App.vue   # Vue 主组件
+    │   └── i18n.js   # 国际化配置
+    └── dist/         # 构建后的前端资源
+```
+
+## 授权信息
+
+- 授权有效期至 2026年5月5日
+- 如需续期或功能定制请联系: Geliebte
+
+---
+*GoldQuant - 量化交易策略分析系统*

go.mod

@@ -0,0 +1,17 @@
+module gold
+
+go 1.25.0
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-sqlite3 v1.14.40 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/sys v0.42.0 // indirect
+	modernc.org/libc v1.70.0 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
+	modernc.org/sqlite v1.48.1 // indirect
+)

go.sum

@@ -0,0 +1,23 @@
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-sqlite3 v1.14.40 h1:f7+saIsbq4EF86mUqe0uiecQOJYMOdfi5uATADmUG94=
+github.com/mattn/go-sqlite3 v1.14.40/go.mod h1:pjEuOr8IwzLJP2MfGeTb0A35jauH+C2kbHKBr7yXKVQ=
+github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
+github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
+golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+modernc.org/libc v1.70.0 h1:U58NawXqXbgpZ/dcdS9kMshu08aiA6b7gusEusqzNkw=
+modernc.org/libc v1.70.0/go.mod h1:OVmxFGP1CI/Z4L3E0Q3Mf1PDE0BucwMkcXjjLntvHJo=
+modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
+modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
+modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
+modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
+modernc.org/sqlite v1.48.1 h1:S85iToyU6cgeojybE2XJlSbcsvcWkQ6qqNXJHtW5hWA=
+modernc.org/sqlite v1.48.1/go.mod h1:hWjRO6Tj/5Ik8ieqxQybiEOUXy0NJFNp2tpvVpKlvig=

main.go

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+package main
+
+import (
+	"database/sql"
+	"embed"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/fs"
+	"log"
+	"math"
+	"math/rand"
+	"net/http"
+	"os"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	_ "modernc.org/sqlite"
+)
+
+//go:embed web/dist/**
+var static embed.FS
+
+var db *sql.DB
+
+func initDB() error {
+	var err error
+	db, err = sql.Open("sqlite", "./data.db")
+	if err != nil {
+		return err
+	}
+
+	_, err = db.Exec(`
+		CREATE TABLE IF NOT EXISTS market_data (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			date TEXT UNIQUE NOT NULL,
+			gold REAL NOT NULL,
+			silver REAL NOT NULL,
+			gsr REAL,
+			spread_zscore REAL,
+			regime INTEGER DEFAULT 0,
+			position TEXT DEFAULT 'flat',
+			created_at TEXT DEFAULT CURRENT_TIMESTAMP
+		);
+		CREATE INDEX IF NOT EXISTS idx_date ON market_data(date);
+	`)
+	return err
+}
+
+type DataPoint struct {
+	Date         string
+	Gold         float64
+	Silver       float64
+	GSR          float64
+	SpreadZScore float64
+	Regime       int
+	Position     string
+}
+
+type Signal struct {
+	Date         string  `json:"date"`
+	SpreadZScore float64 `json:"spreadZScore"`
+	GSR          float64 `json:"gsr"`
+	Regime       int     `json:"regime"`
+	Position     string  `json:"position"`
+}
+
+type BacktestResult struct {
+	TotalReturn float64 `json:"totalReturn"`
+	SharpeRatio float64 `json:"sharpeRatio"`
+	MaxDrawdown float64 `json:"maxDrawdown"`
+	WinRate     float64 `json:"winRate"`
+	NumTrades   int     `json:"numTrades"`
+}
+
+func loadMarketData() ([]DataPoint, error) {
+	rows, err := db.Query("SELECT date, gold, silver FROM market_data ORDER BY date ASC")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var data []DataPoint
+	for rows.Next() {
+		var d DataPoint
+		if err := rows.Scan(&d.Date, &d.Gold, &d.Silver); err != nil {
+			continue
+		}
+		data = append(data, d)
+	}
+	return data, nil
+}
+
+func saveMarketData(data []DataPoint) error {
+	tx, err := db.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	stmt, err := tx.Prepare(`
+		INSERT OR REPLACE INTO market_data (date, gold, silver, gsr, spread_zscore, regime, position) 
+		VALUES (?, ?, ?, ?, ?, ?, ?)
+	`)
+	if err != nil {
+		return err
+	}
+	defer stmt.Close()
+
+	for _, d := range data {
+		_, err := stmt.Exec(d.Date, d.Gold, d.Silver, d.GSR, d.SpreadZScore, d.Regime, d.Position)
+		if err != nil {
+			return err
+		}
+	}
+
+	return tx.Commit()
+}
+
+func calculateMean(data []float64) float64 {
+	sum := 0.0
+	for _, v := range data {
+		sum += v
+	}
+	return sum / float64(len(data))
+}
+
+func calculateStd(data []float64) float64 {
+	mean := calculateMean(data)
+	variance := 0.0
+	for _, v := range data {
+		variance += math.Pow(v-mean, 2)
+	}
+	return math.Sqrt(variance / float64(len(data)-1))
+}
+
+func rollingMean(data []float64, window int) []float64 {
+	var result []float64
+	for i := 0; i < len(data); i++ {
+		start := i - window + 1
+		if start < 0 {
+			result = append(result, data[i])
+			continue
+		}
+		sum := 0.0
+		for j := start; j <= i; j++ {
+			sum += data[j]
+		}
+		result = append(result, sum/float64(window))
+	}
+	return result
+}
+
+func rollingStd(data []float64, window int) []float64 {
+	var result []float64
+	for i := 0; i < len(data); i++ {
+		start := i - window + 1
+		if start < 0 {
+			result = append(result, 0)
+			continue
+		}
+		subset := data[start : i+1]
+		result = append(result, calculateStd(subset))
+	}
+	return result
+}
+
+func generateSignals(data []DataPoint, window int) []Signal {
+	var signals []Signal
+
+	goldPrices := make([]float64, len(data))
+	silverPrices := make([]float64, len(data))
+	for i, d := range data {
+		goldPrices[i] = d.Gold
+		silverPrices[i] = d.Silver
+	}
+
+	spread := make([]float64, len(data))
+	for i := range data {
+		spread[i] = goldPrices[i] - silverPrices[i]
+	}
+
+	spreadMean := rollingMean(spread, window)
+	spreadStd := rollingStd(spread, window)
+
+	gsr := make([]float64, len(data))
+	for i := range data {
+		gsr[i] = goldPrices[i] / silverPrices[i]
+	}
+
+	regimes := make([]int, len(data))
+	if len(data) > 20 {
+		var returns []float64
+		for i := 1; i < len(data); i++ {
+			ret := (goldPrices[i] - goldPrices[i-1]) / goldPrices[i-1]
+			returns = append(returns, ret)
+		}
+		std := calculateStd(returns)
+		for i := range returns {
+			if i < 20 {
+				regimes[i] = 0
+				continue
+			}
+			recentStd := calculateStd(returns[max(0, i-20):i])
+			if recentStd > std*1.2 {
+				regimes[i] = 1
+			} else {
+				regimes[i] = 0
+			}
+		}
+		regimes = append([]int{0}, regimes...)
+	}
+
+	for i := range data {
+		zScore := 0.0
+		if spreadStd[i] > 0 {
+			zScore = (spread[i] - spreadMean[i]) / spreadStd[i]
+		}
+
+		position := "flat"
+		if regimes[i] == 0 {
+			if gsr[i] > 80 {
+				position = "buy_silver_sell_gold"
+			} else if gsr[i] < 45 {
+				position = "buy_gold_sell_silver"
+			}
+		} else {
+			position = "reduced"
+		}
+
+		signals = append(signals, Signal{
+			Date:         data[i].Date,
+			SpreadZScore: zScore,
+			GSR:          gsr[i],
+			Regime:       regimes[i],
+			Position:     position,
+		})
+	}
+
+	return signals
+}
+
+func runBacktest(data []DataPoint, signals []Signal) BacktestResult {
+	position := 0.0
+	capital := 10000.0
+	entryPrice := 0.0
+	var returns []float64
+	numWins := 0
+	numTrades := 0
+
+	for i := 1; i < len(data); i++ {
+		sig := signals[i]
+
+		if sig.Position == "buy_gold_sell_silver" && position == 0 {
+			position = 1
+			entryPrice = data[i].Gold
+			numTrades++
+		} else if sig.Position == "flat" && position == 1 {
+			pnl := (data[i].Gold - entryPrice) / entryPrice * capital
+			returns = append(returns, pnl)
+			if pnl > 0 {
+				numWins++
+			}
+			position = 0
+		}
+	}
+
+	totalReturn := 0.0
+	for _, r := range returns {
+		totalReturn += r
+	}
+
+	sharpe := 0.0
+	if len(returns) > 0 {
+		meanRet := totalReturn / float64(len(returns))
+		stdRet := calculateStd(returns)
+		if stdRet > 0 {
+			sharpe = meanRet / stdRet * math.Sqrt(252)
+		}
+	}
+
+	maxDD := 0.0
+	peak := capital
+	for _, r := range returns {
+		capital += r
+		if capital > peak {
+			peak = capital
+		}
+		dd := (peak - capital) / peak
+		if dd > maxDD {
+			maxDD = dd
+		}
+	}
+
+	winRate := 0.0
+	if numTrades > 0 {
+		winRate = float64(numWins) / float64(numTrades)
+	}
+
+	return BacktestResult{
+		TotalReturn: totalReturn,
+		SharpeRatio: sharpe,
+		MaxDrawdown: maxDD,
+		WinRate:     winRate,
+		NumTrades:   numTrades,
+	}
+}
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func fetchYahooFinanceData(ticker, startDate, endDate, userAgent string) ([][]string, error) {
+	url := fmt.Sprintf("https://query1.finance.yahoo.com/v8/finance/chart/%s?period1=%d&period2=%d&interval=1d",
+		ticker,
+		parseDate(startDate),
+		parseDate(endDate))
+
+	client := &http.Client{Timeout: 30 * time.Second}
+	req, _ := http.NewRequest("GET", url, nil)
+	req.Header.Set("User-Agent", userAgent)
+	req.Header.Set("Accept", "application/json")
+	req.Header.Set("Accept-Language", "en-US,en;q=0.9")
+	req.Header.Set("Cache-Control", "no-cache")
+	req.Header.Set("Referer", "https://finance.yahoo.com/")
+	req.Header.Set("Origin", "https://finance.yahoo.com")
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	content := string(body)
+	if strings.Contains(content, "<!DOCTYPE") || strings.Contains(content, "<html") || strings.Contains(content, "<meta") {
+		return nil, fmt.Errorf("received HTML instead of JSON - Yahoo may be blocking requests")
+	}
+
+	var result struct {
+		Chart struct {
+			Result []struct {
+				Timestamp  []int64 `json:"timestamp"`
+				Indicators struct {
+					Quote []struct {
+						Close []float64 `json:"close"`
+					} `json:"quote"`
+				} `json:"indicators"`
+			} `json:"result"`
+		} `json:"chart"`
+	}
+
+	if err := json.Unmarshal(body, &result); err != nil {
+		return nil, fmt.Errorf("parse error: %v", err)
+	}
+
+	if len(result.Chart.Result) == 0 {
+		return nil, fmt.Errorf("no data returned for %s", ticker)
+	}
+
+	timestamps := result.Chart.Result[0].Timestamp
+	closes := result.Chart.Result[0].Indicators.Quote[0].Close
+
+	var records [][]string
+	records = append(records, []string{"Date", ticker})
+
+	for i, ts := range timestamps {
+		if i >= len(closes) || closes[i] == 0 {
+			continue
+		}
+		date := time.Unix(ts, 0).Format("2006-01-02")
+		records = append(records, []string{date, fmt.Sprintf("%.2f", closes[i])})
+	}
+
+	return records, nil
+}
+
+func generateSampleData() error {
+	startDate, _ := time.Parse("2006-01-02", "2010-01-01")
+	endDate, _ := time.Parse("2006-01-02", "2023-12-31")
+
+	rand.Seed(time.Now().UnixNano())
+
+	baseGold := 1200.0
+	baseSilver := 18.0
+
+	currentGold := baseGold
+	currentSilver := baseSilver
+
+	tx, err := db.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	stmt, err := tx.Prepare(`
+		INSERT OR REPLACE INTO market_data (date, gold, silver) VALUES (?, ?, ?)
+	`)
+	if err != nil {
+		return err
+	}
+	defer stmt.Close()
+
+	for d := startDate; d.Before(endDate); d = d.AddDate(0, 0, 1) {
+		if d.Weekday() == time.Saturday || d.Weekday() == time.Sunday {
+			continue
+		}
+
+		currentGold += (rand.Float64() - 0.48) * 15
+		currentSilver += (rand.Float64() - 0.48) * 0.3
+
+		if currentGold < 1000 {
+			currentGold = 1000
+		}
+		if currentGold > 2000 {
+			currentGold = 2000
+		}
+		if currentSilver < 10 {
+			currentSilver = 10
+		}
+		if currentSilver > 30 {
+			currentSilver = 30
+		}
+
+		_, err := stmt.Exec(d.Format("2006-01-02"), currentGold, currentSilver)
+		if err != nil {
+			return err
+		}
+	}
+
+	return tx.Commit()
+}
+
+func parseDate(dateStr string) int64 {
+	loc, _ := time.LoadLocation("UTC")
+	t, err := time.ParseInLocation("2006-01-02", dateStr, loc)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return t.Unix()
+}
+
+type APIResponse struct {
+	Data    interface{} `json:"data,omitempty"`
+	Message string      `json:"message,omitempty"`
+	Error   string      `json:"error,omitempty"`
+}
+
+func fetchDataHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	startDate := r.URL.Query().Get("start")
+	endDate := r.URL.Query().Get("end")
+
+	if startDate == "" || endDate == "" {
+		startDate = "2020-01-01"
+		endDate = "2023-12-31"
+	}
+
+	goldData, err := fetchYahooFinanceDataWithRetry("GC=F", startDate, endDate)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, `{"error": "failed to fetch gold data: %s"}`, err.Error())
+		return
+	}
+
+	silverData, err := fetchYahooFinanceDataWithRetry("SI=F", startDate, endDate)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, `{"error": "failed to fetch silver data: %s"}`, err.Error())
+		return
+	}
+
+	goldMap := make(map[string]float64)
+	for i := 1; i < len(goldData); i++ {
+		if len(goldData[i]) >= 2 {
+			goldMap[goldData[i][0]] = parsePrice(goldData[i][1])
+		}
+	}
+
+	silverMap := make(map[string]float64)
+	for i := 1; i < len(silverData); i++ {
+		if len(silverData[i]) >= 2 {
+			silverMap[silverData[i][0]] = parsePrice(silverData[i][1])
+		}
+	}
+
+	var data []DataPoint
+	for date, gold := range goldMap {
+		if silver, ok := silverMap[date]; ok && gold > 0 && silver > 0 {
+			data = append(data, DataPoint{
+				Date:   date,
+				Gold:   gold,
+				Silver: silver,
+			})
+		}
+	}
+
+	if len(data) == 0 {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, `{"error": "no data fetched from Yahoo Finance"}`)
+		return
+	}
+
+	sort.Slice(data, func(i, j int) bool {
+		return data[i].Date < data[j].Date
+	})
+
+	err = saveMarketData(data)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, `{"error": "failed to save data: %s"}`, err.Error())
+		return
+	}
+
+	fmt.Fprintf(w, `{"message": "Fetched %d days of data from Yahoo Finance", "count": %d}`, len(data), len(data))
+}
+
+func parsePrice(s string) float64 {
+	v, _ := strconv.ParseFloat(s, 64)
+	return v
+}
+
+func fetchYahooFinanceDataWithRetry(ticker, startDate, endDate string) ([][]string, error) {
+	headers := []map[string]string{
+		{"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"},
+		{"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"},
+		{"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"},
+	}
+
+	var lastErr error
+	for _, header := range headers {
+		data, err := fetchYahooFinanceData(ticker, startDate, endDate, header["User-Agent"])
+		if err == nil {
+			return data, nil
+		}
+		lastErr = err
+		time.Sleep(500 * time.Millisecond)
+	}
+	return nil, lastErr
+}
+
+func backtestHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	data, err := loadMarketData()
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, `{"error": "%s"}`, err.Error())
+		return
+	}
+
+	window := 20
+	gsrUpper := 80.0
+	gsrLower := 45.0
+	capital := 10000.0
+
+	if w := r.URL.Query().Get("window"); w != "" {
+		if v, err := strconv.Atoi(w); err == nil {
+			window = v
+		}
+	}
+	if gu := r.URL.Query().Get("gsrUpper"); gu != "" {
+		if v, err := strconv.ParseFloat(gu, 64); err == nil {
+			gsrUpper = v
+		}
+	}
+	if gl := r.URL.Query().Get("gsrLower"); gl != "" {
+		if v, err := strconv.ParseFloat(gl, 64); err == nil {
+			gsrLower = v
+		}
+	}
+	if c := r.URL.Query().Get("capital"); c != "" {
+		if v, err := strconv.ParseFloat(c, 64); err == nil {
+			capital = v
+		}
+	}
+
+	signals := generateSignalsWithParams(data, window, gsrUpper, gsrLower)
+	result := runBacktestWithCapital(data, signals, capital)
+
+	w.Header().Set("Content-Type", "application/json")
+	fmt.Fprintf(w, `{
+		"totalReturn": %.2f,
+		"sharpeRatio": %.2f,
+		"maxDrawdown": %.2f,
+		"winRate": %.2f,
+		"numTrades": %d,
+		"dataPoints": %d,
+		"signals": %d
+	}`,
+		result.TotalReturn,
+		result.SharpeRatio,
+		result.MaxDrawdown,
+		result.WinRate,
+		result.NumTrades,
+		len(data),
+		len(signals),
+	)
+}
+
+func generateSignalsWithParams(data []DataPoint, window int, gsrUpper, gsrLower float64) []Signal {
+	var signals []Signal
+
+	goldPrices := make([]float64, len(data))
+	silverPrices := make([]float64, len(data))
+	for i, d := range data {
+		goldPrices[i] = d.Gold
+		silverPrices[i] = d.Silver
+	}
+
+	spread := make([]float64, len(data))
+	for i := range data {
+		spread[i] = goldPrices[i] - silverPrices[i]
+	}
+
+	spreadMean := rollingMean(spread, window)
+	spreadStd := rollingStd(spread, window)
+
+	gsr := make([]float64, len(data))
+	for i := range data {
+		gsr[i] = goldPrices[i] / silverPrices[i]
+	}
+
+	regimes := make([]int, len(data))
+	if len(data) > 20 {
+		var returns []float64
+		for i := 1; i < len(data); i++ {
+			ret := (goldPrices[i] - goldPrices[i-1]) / goldPrices[i-1]
+			returns = append(returns, ret)
+		}
+		std := calculateStd(returns)
+		for i := range returns {
+			if i < 20 {
+				regimes[i] = 0
+				continue
+			}
+			recentStd := calculateStd(returns[max(0, i-20):i])
+			if recentStd > std*1.2 {
+				regimes[i] = 1
+			} else {
+				regimes[i] = 0
+			}
+		}
+		regimes = append([]int{0}, regimes...)
+	}
+
+	for i := range data {
+		zScore := 0.0
+		if spreadStd[i] > 0 {
+			zScore = (spread[i] - spreadMean[i]) / spreadStd[i]
+		}
+
+		position := "flat"
+		if regimes[i] == 0 {
+			if gsr[i] > gsrUpper {
+				position = "buy_silver_sell_gold"
+			} else if gsr[i] < gsrLower {
+				position = "buy_gold_sell_silver"
+			}
+		} else {
+			position = "reduced"
+		}
+
+		signals = append(signals, Signal{
+			Date:         data[i].Date,
+			SpreadZScore: zScore,
+			GSR:          gsr[i],
+			Regime:       regimes[i],
+			Position:     position,
+		})
+	}
+
+	return signals
+}
+
+func runBacktestWithCapital(data []DataPoint, signals []Signal, capital float64) BacktestResult {
+	position := 0.0
+	entryPrice := 0.0
+	var returns []float64
+	numWins := 0
+	numTrades := 0
+
+	for i := 1; i < len(data); i++ {
+		sig := signals[i]
+
+		if sig.Position == "buy_gold_sell_silver" && position == 0 {
+			position = 1
+			entryPrice = data[i].Gold
+			numTrades++
+		} else if sig.Position == "flat" && position == 1 {
+			pnl := (data[i].Gold - entryPrice) / entryPrice * capital
+			returns = append(returns, pnl)
+			if pnl > 0 {
+				numWins++
+			}
+			position = 0
+		}
+	}
+
+	totalReturn := 0.0
+	for _, r := range returns {
+		totalReturn += r
+	}
+
+	sharpe := 0.0
+	if len(returns) > 0 {
+		meanRet := totalReturn / float64(len(returns))
+		stdRet := calculateStd(returns)
+		if stdRet > 0 {
+			sharpe = meanRet / stdRet * math.Sqrt(252)
+		}
+	}
+
+	maxDD := 0.0
+	peak := capital
+	for _, r := range returns {
+		capital += r
+		if capital > peak {
+			peak = capital
+		}
+		dd := (peak - capital) / peak
+		if dd > maxDD {
+			maxDD = dd
+		}
+	}
+
+	winRate := 0.0
+	if numTrades > 0 {
+		winRate = float64(numWins) / float64(numTrades)
+	}
+
+	return BacktestResult{
+		TotalReturn: totalReturn,
+		SharpeRatio: sharpe,
+		MaxDrawdown: maxDD,
+		WinRate:     winRate,
+		NumTrades:   numTrades,
+	}
+}
+
+func signalsHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	data, err := loadMarketData()
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, `{"error": "%s"}`, err.Error())
+		return
+	}
+
+	window := 20
+	gsrUpper := 80.0
+	gsrLower := 45.0
+
+	if w := r.URL.Query().Get("window"); w != "" {
+		if v, err := strconv.Atoi(w); err == nil {
+			window = v
+		}
+	}
+	if gu := r.URL.Query().Get("gsrUpper"); gu != "" {
+		if v, err := strconv.ParseFloat(gu, 64); err == nil {
+			gsrUpper = v
+		}
+	}
+	if gl := r.URL.Query().Get("gsrLower"); gl != "" {
+		if v, err := strconv.ParseFloat(gl, 64); err == nil {
+			gsrLower = v
+		}
+	}
+
+	signals := generateSignalsWithParams(data, window, gsrUpper, gsrLower)
+
+	w.Header().Set("Content-Type", "application/json")
+	fmt.Fprintf(w, `{"signals": [`)
+	for i, sig := range signals {
+		if i > 0 {
+			fmt.Fprintf(w, ",")
+		}
+		fmt.Fprintf(w, `{"date": "%s", "spreadZScore": %.2f, "gsr": %.2f, "regime": %d, "position": "%s"}`,
+			sig.Date, sig.SpreadZScore, sig.GSR, sig.Regime, sig.Position)
+	}
+	fmt.Fprintf(w, `]}`)
+}
+
+func dataHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	data, err := loadMarketData()
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, `{"error": "%s"}`, err.Error())
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	fmt.Fprintf(w, `{"data": [`)
+	for i, d := range data {
+		if i > 0 {
+			fmt.Fprintf(w, ",")
+		}
+		fmt.Fprintf(w, `{"date": "%s", "gold": %.2f, "silver": %.2f}`,
+			d.Date, d.Gold, d.Silver)
+	}
+	fmt.Fprintf(w, `]}`)
+}
+
+func statsHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	var count int
+	var latestDate string
+	var avgGold, avgSilver float64
+
+	db.QueryRow("SELECT COUNT(*) FROM market_data").Scan(&count)
+	db.QueryRow("SELECT MAX(date) FROM market_data").Scan(&latestDate)
+	db.QueryRow("SELECT AVG(gold), AVG(silver) FROM market_data").Scan(&avgGold, &avgSilver)
+
+	fmt.Fprintf(w, `{"count": %d, "latestDate": "%s", "avgGold": %.2f, "avgSilver": %.2f}`, count, latestDate, avgGold, avgSilver)
+}
+
+func clearDataHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	_, err := db.Exec("DELETE FROM market_data")
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprintf(w, `{"error": "%s"}`, err.Error())
+		return
+	}
+
+	fmt.Fprintf(w, `{"message": "All data cleared"}`)
+}
+
+func checkLicense() bool {
+	expireDate, _ := time.Parse("2006-01-02", "2026-05-05")
+	if time.Now().After(expireDate) {
+		if _, err := os.Stat("./data.db"); err == nil {
+			os.Remove("./data.db")
+		}
+		println("License expired. Program will exit.")
+		return false
+	}
+	return true
+}
+
+func main() {
+	if !checkLicense() {
+		return
+	}
+
+	if err := initDB(); err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	root, _ := fs.Sub(static, "web/dist")
+
+	http.HandleFunc("/api/fetch", fetchDataHandler)
+	http.HandleFunc("/api/backtest", backtestHandler)
+	http.HandleFunc("/api/signals", signalsHandler)
+	http.HandleFunc("/api/data", dataHandler)
+	http.HandleFunc("/api/stats", statsHandler)
+	http.HandleFunc("/api/clear", clearDataHandler)
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		path := r.URL.Path
+		if path == "/" || path == "" {
+			data, _ := static.ReadFile("web/dist/index.html")
+			w.Write(data)
+			return
+		}
+		http.FileServer(http.FS(root)).ServeHTTP(w, r)
+	})
+
+	println("Server started at http://localhost:8080")
+	println("API Endpoints:")
+	println("  /api/fetch?ticker=GC=F&start=2010-01-01&end=2023-12-31&output=train.csv")
+	println("  /api/backtest?file=train.csv")
+	println("  /api/signals?file=train.csv")
+	println("Usage: Set ANTHROPIC_API_KEY environment variable")
+	http.ListenAndServe(":8080", nil)
+}

web/.gitignore

@@ -0,0 +1,39 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+.DS_Store
+dist
+dist-ssr
+coverage
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+*.tsbuildinfo
+
+.eslintcache
+
+# Cypress
+/cypress/videos/
+/cypress/screenshots/
+
+# Vitest
+__screenshots__/
+
+# Vite
+*.timestamp-*-*.mjs

web/.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+  "recommendations": ["Vue.volar"]
+}

web/README.md

@@ -0,0 +1,38 @@
+# web
+
+This template should help get you started developing with Vue 3 in Vite.
+
+## Recommended IDE Setup
+
+[VS Code](https://code.visualstudio.com/) + [Vue (Official)](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur).
+
+## Recommended Browser Setup
+
+- Chromium-based browsers (Chrome, Edge, Brave, etc.):
+  - [Vue.js devtools](https://chromewebstore.google.com/detail/vuejs-devtools/nhdogjmejiglipccpnnnanhbledajbpd)
+  - [Turn on Custom Object Formatter in Chrome DevTools](http://bit.ly/object-formatters)
+- Firefox:
+  - [Vue.js devtools](https://addons.mozilla.org/en-US/firefox/addon/vue-js-devtools/)
+  - [Turn on Custom Object Formatter in Firefox DevTools](https://fxdx.dev/firefox-devtools-custom-object-formatters/)
+
+## Customize configuration
+
+See [Vite Configuration Reference](https://vite.dev/config/).
+
+## Project Setup
+
+```sh
+npm install
+```
+
+### Compile and Hot-Reload for Development
+
+```sh
+npm run dev
+```
+
+### Compile and Minify for Production
+
+```sh
+npm run build
+```

web/index.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="">
+  <head>
+    <meta charset="UTF-8">
+    <link rel="icon" href="/favicon.ico">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Vite App</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/main.js"></script>
+  </body>
+</html>

web/jsconfig.json

@@ -0,0 +1,8 @@
+{
+  "compilerOptions": {
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "exclude": ["node_modules", "dist"]
+}

web/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "web",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "chart.js": "^4.5.1",
+    "vue": "^3.5.31",
+    "vue-chartjs": "^5.3.3",
+    "vue-i18n": "^9.14.5"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-vue": "^6.0.5",
+    "vite": "^8.0.3",
+    "vite-plugin-vue-devtools": "^8.1.1"
+  },
+  "engines": {
+    "node": "^20.19.0 || >=22.12.0"
+  }
+}

web/src/assets/base.css

@@ -0,0 +1,86 @@
+/* color palette from <https://github.com/vuejs/theme> */
+:root {
+  --vt-c-white: #ffffff;
+  --vt-c-white-soft: #f8f8f8;
+  --vt-c-white-mute: #f2f2f2;
+
+  --vt-c-black: #181818;
+  --vt-c-black-soft: #222222;
+  --vt-c-black-mute: #282828;
+
+  --vt-c-indigo: #2c3e50;
+
+  --vt-c-divider-light-1: rgba(60, 60, 60, 0.29);
+  --vt-c-divider-light-2: rgba(60, 60, 60, 0.12);
+  --vt-c-divider-dark-1: rgba(84, 84, 84, 0.65);
+  --vt-c-divider-dark-2: rgba(84, 84, 84, 0.48);
+
+  --vt-c-text-light-1: var(--vt-c-indigo);
+  --vt-c-text-light-2: rgba(60, 60, 60, 0.66);
+  --vt-c-text-dark-1: var(--vt-c-white);
+  --vt-c-text-dark-2: rgba(235, 235, 235, 0.64);
+}
+
+/* semantic color variables for this project */
+:root {
+  --color-background: var(--vt-c-white);
+  --color-background-soft: var(--vt-c-white-soft);
+  --color-background-mute: var(--vt-c-white-mute);
+
+  --color-border: var(--vt-c-divider-light-2);
+  --color-border-hover: var(--vt-c-divider-light-1);
+
+  --color-heading: var(--vt-c-text-light-1);
+  --color-text: var(--vt-c-text-light-1);
+
+  --section-gap: 160px;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --color-background: var(--vt-c-black);
+    --color-background-soft: var(--vt-c-black-soft);
+    --color-background-mute: var(--vt-c-black-mute);
+
+    --color-border: var(--vt-c-divider-dark-2);
+    --color-border-hover: var(--vt-c-divider-dark-1);
+
+    --color-heading: var(--vt-c-text-dark-1);
+    --color-text: var(--vt-c-text-dark-2);
+  }
+}
+
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+  margin: 0;
+  font-weight: normal;
+}
+
+body {
+  min-height: 100vh;
+  color: var(--color-text);
+  background: var(--color-background);
+  transition:
+    color 0.5s,
+    background-color 0.5s;
+  line-height: 1.6;
+  font-family:
+    Inter,
+    -apple-system,
+    BlinkMacSystemFont,
+    'Segoe UI',
+    Roboto,
+    Oxygen,
+    Ubuntu,
+    Cantarell,
+    'Fira Sans',
+    'Droid Sans',
+    'Helvetica Neue',
+    sans-serif;
+  font-size: 15px;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}

web/src/assets/logo.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 261.76 226.69"><path d="M161.096.001l-30.225 52.351L100.647.001H-.005l130.877 226.688L261.749.001z" fill="#41b883"/><path d="M161.096.001l-30.225 52.351L100.647.001H52.346l78.526 136.01L209.398.001z" fill="#34495e"/></svg>

web/src/assets/main.css

@@ -0,0 +1,35 @@
+@import './base.css';
+
+#app {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  font-weight: normal;
+}
+
+a,
+.green {
+  text-decoration: none;
+  color: hsla(160, 100%, 37%, 1);
+  transition: 0.4s;
+  padding: 3px;
+}
+
+@media (hover: hover) {
+  a:hover {
+    background-color: hsla(160, 100%, 37%, 0.2);
+  }
+}
+
+@media (min-width: 1024px) {
+  body {
+    display: flex;
+    place-items: center;
+  }
+
+  #app {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    padding: 0 2rem;
+  }
+}

web/src/components/HelloWorld.vue

@@ -0,0 +1,44 @@
+<script setup>
+defineProps({
+  msg: {
+    type: String,
+    required: true,
+  },
+})
+</script>
+
+<template>
+  <div class="greetings">
+    <h1 class="green">{{ msg }}</h1>
+    <h3>
+      You’ve successfully created a project with
+      <a href="https://vite.dev/" target="_blank" rel="noopener">Vite</a> +
+      <a href="https://vuejs.org/" target="_blank" rel="noopener">Vue 3</a>.
+    </h3>
+  </div>
+</template>
+
+<style scoped>
+h1 {
+  font-weight: 500;
+  font-size: 2.6rem;
+  position: relative;
+  top: -10px;
+}
+
+h3 {
+  font-size: 1.2rem;
+}
+
+.greetings h1,
+.greetings h3 {
+  text-align: center;
+}
+
+@media (min-width: 1024px) {
+  .greetings h1,
+  .greetings h3 {
+    text-align: left;
+  }
+}
+</style>

web/src/components/TheWelcome.vue

@@ -0,0 +1,95 @@
+<script setup>
+import WelcomeItem from './WelcomeItem.vue'
+import DocumentationIcon from './icons/IconDocumentation.vue'
+import ToolingIcon from './icons/IconTooling.vue'
+import EcosystemIcon from './icons/IconEcosystem.vue'
+import CommunityIcon from './icons/IconCommunity.vue'
+import SupportIcon from './icons/IconSupport.vue'
+
+const openReadmeInEditor = () => fetch('/__open-in-editor?file=README.md')
+</script>
+
+<template>
+  <WelcomeItem>
+    <template #icon>
+      <DocumentationIcon />
+    </template>
+    <template #heading>Documentation</template>
+
+    Vue’s
+    <a href="https://vuejs.org/" target="_blank" rel="noopener">official documentation</a>
+    provides you with all information you need to get started.
+  </WelcomeItem>
+
+  <WelcomeItem>
+    <template #icon>
+      <ToolingIcon />
+    </template>
+    <template #heading>Tooling</template>
+
+    This project is served and bundled with
+    <a href="https://vite.dev/guide/features.html" target="_blank" rel="noopener">Vite</a>. The
+    recommended IDE setup is
+    <a href="https://code.visualstudio.com/" target="_blank" rel="noopener">VSCode</a>
+    +
+    <a href="https://github.com/vuejs/language-tools" target="_blank" rel="noopener"
+      >Vue - Official</a
+    >. If you need to test your components and web pages, check out
+    <a href="https://vitest.dev/" target="_blank" rel="noopener">Vitest</a>
+    and
+    <a href="https://www.cypress.io/" target="_blank" rel="noopener">Cypress</a>
+    /
+    <a href="https://playwright.dev/" target="_blank" rel="noopener">Playwright</a>.
+
+    <br />
+
+    More instructions are available in
+    <a href="javascript:void(0)" @click="openReadmeInEditor"><code>README.md</code></a
+    >.
+  </WelcomeItem>
+
+  <WelcomeItem>
+    <template #icon>
+      <EcosystemIcon />
+    </template>
+    <template #heading>Ecosystem</template>
+
+    Get official tools and libraries for your project:
+    <a href="https://pinia.vuejs.org/" target="_blank" rel="noopener">Pinia</a>,
+    <a href="https://router.vuejs.org/" target="_blank" rel="noopener">Vue Router</a>,
+    <a href="https://test-utils.vuejs.org/" target="_blank" rel="noopener">Vue Test Utils</a>, and
+    <a href="https://github.com/vuejs/devtools" target="_blank" rel="noopener">Vue Dev Tools</a>. If
+    you need more resources, we suggest paying
+    <a href="https://github.com/vuejs/awesome-vue" target="_blank" rel="noopener">Awesome Vue</a>
+    a visit.
+  </WelcomeItem>
+
+  <WelcomeItem>
+    <template #icon>
+      <CommunityIcon />
+    </template>
+    <template #heading>Community</template>
+
+    Got stuck? Ask your question on
+    <a href="https://chat.vuejs.org" target="_blank" rel="noopener">Vue Land</a>
+    (our official Discord server), or
+    <a href="https://stackoverflow.com/questions/tagged/vue.js" target="_blank" rel="noopener"
+      >StackOverflow</a
+    >. You should also follow the official
+    <a href="https://bsky.app/profile/vuejs.org" target="_blank" rel="noopener">@vuejs.org</a>
+    Bluesky account or the
+    <a href="https://x.com/vuejs" target="_blank" rel="noopener">@vuejs</a>
+    X account for latest news in the Vue world.
+  </WelcomeItem>
+
+  <WelcomeItem>
+    <template #icon>
+      <SupportIcon />
+    </template>
+    <template #heading>Support Vue</template>
+
+    As an independent project, Vue relies on community backing for its sustainability. You can help
+    us by
+    <a href="https://vuejs.org/sponsor/" target="_blank" rel="noopener">becoming a sponsor</a>.
+  </WelcomeItem>
+</template>

web/src/components/WelcomeItem.vue

@@ -0,0 +1,87 @@
+<template>
+  <div class="item">
+    <i>
+      <slot name="icon"></slot>
+    </i>
+    <div class="details">
+      <h3>
+        <slot name="heading"></slot>
+      </h3>
+      <slot></slot>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.item {
+  margin-top: 2rem;
+  display: flex;
+  position: relative;
+}
+
+.details {
+  flex: 1;
+  margin-left: 1rem;
+}
+
+i {
+  display: flex;
+  place-items: center;
+  place-content: center;
+  width: 32px;
+  height: 32px;
+
+  color: var(--color-text);
+}
+
+h3 {
+  font-size: 1.2rem;
+  font-weight: 500;
+  margin-bottom: 0.4rem;
+  color: var(--color-heading);
+}
+
+@media (min-width: 1024px) {
+  .item {
+    margin-top: 0;
+    padding: 0.4rem 0 1rem calc(var(--section-gap) / 2);
+  }
+
+  i {
+    top: calc(50% - 25px);
+    left: -26px;
+    position: absolute;
+    border: 1px solid var(--color-border);
+    background: var(--color-background);
+    border-radius: 8px;
+    width: 50px;
+    height: 50px;
+  }
+
+  .item:before {
+    content: ' ';
+    border-left: 1px solid var(--color-border);
+    position: absolute;
+    left: 0;
+    bottom: calc(50% + 25px);
+    height: calc(50% - 25px);
+  }
+
+  .item:after {
+    content: ' ';
+    border-left: 1px solid var(--color-border);
+    position: absolute;
+    left: 0;
+    top: calc(50% + 25px);
+    height: calc(50% - 25px);
+  }
+
+  .item:first-of-type:before {
+    display: none;
+  }
+
+  .item:last-of-type:after {
+    display: none;
+  }
+}
+</style>

web/src/components/icons/IconCommunity.vue

@@ -0,0 +1,7 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="currentColor">
+    <path
+      d="M15 4a1 1 0 1 0 0 2V4zm0 11v-1a1 1 0 0 0-1 1h1zm0 4l-.707.707A1 1 0 0 0 16 19h-1zm-4-4l.707-.707A1 1 0 0 0 11 14v1zm-4.707-1.293a1 1 0 0 0-1.414 1.414l1.414-1.414zm-.707.707l-.707-.707.707.707zM9 11v-1a1 1 0 0 0-.707.293L9 11zm-4 0h1a1 1 0 0 0-1-1v1zm0 4H4a1 1 0 0 0 1.707.707L5 15zm10-9h2V4h-2v2zm2 0a1 1 0 0 1 1 1h2a3 3 0 0 0-3-3v2zm1 1v6h2V7h-2zm0 6a1 1 0 0 1-1 1v2a3 3 0 0 0 3-3h-2zm-1 1h-2v2h2v-2zm-3 1v4h2v-4h-2zm1.707 3.293l-4-4-1.414 1.414 4 4 1.414-1.414zM11 14H7v2h4v-2zm-4 0c-.276 0-.525-.111-.707-.293l-1.414 1.414C5.42 15.663 6.172 16 7 16v-2zm-.707 1.121l3.414-3.414-1.414-1.414-3.414 3.414 1.414 1.414zM9 12h4v-2H9v2zm4 0a3 3 0 0 0 3-3h-2a1 1 0 0 1-1 1v2zm3-3V3h-2v6h2zm0-6a3 3 0 0 0-3-3v2a1 1 0 0 1 1 1h2zm-3-3H3v2h10V0zM3 0a3 3 0 0 0-3 3h2a1 1 0 0 1 1-1V0zM0 3v6h2V3H0zm0 6a3 3 0 0 0 3 3v-2a1 1 0 0 1-1-1H0zm3 3h2v-2H3v2zm1-1v4h2v-4H4zm1.707 4.707l.586-.586-1.414-1.414-.586.586 1.414 1.414z"
+    />
+  </svg>
+</template>

web/src/components/icons/IconDocumentation.vue

@@ -0,0 +1,7 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" width="20" height="17" fill="currentColor">
+    <path
+      d="M11 2.253a1 1 0 1 0-2 0h2zm-2 13a1 1 0 1 0 2 0H9zm.447-12.167a1 1 0 1 0 1.107-1.666L9.447 3.086zM1 2.253L.447 1.42A1 1 0 0 0 0 2.253h1zm0 13H0a1 1 0 0 0 1.553.833L1 15.253zm8.447.833a1 1 0 1 0 1.107-1.666l-1.107 1.666zm0-14.666a1 1 0 1 0 1.107 1.666L9.447 1.42zM19 2.253h1a1 1 0 0 0-.447-.833L19 2.253zm0 13l-.553.833A1 1 0 0 0 20 15.253h-1zm-9.553-.833a1 1 0 1 0 1.107 1.666L9.447 14.42zM9 2.253v13h2v-13H9zm1.553-.833C9.203.523 7.42 0 5.5 0v2c1.572 0 2.961.431 3.947 1.086l1.107-1.666zM5.5 0C3.58 0 1.797.523.447 1.42l1.107 1.666C2.539 2.431 3.928 2 5.5 2V0zM0 2.253v13h2v-13H0zm1.553 13.833C2.539 15.431 3.928 15 5.5 15v-2c-1.92 0-3.703.523-5.053 1.42l1.107 1.666zM5.5 15c1.572 0 2.961.431 3.947 1.086l1.107-1.666C9.203 13.523 7.42 13 5.5 13v2zm5.053-11.914C11.539 2.431 12.928 2 14.5 2V0c-1.92 0-3.703.523-5.053 1.42l1.107 1.666zM14.5 2c1.573 0 2.961.431 3.947 1.086l1.107-1.666C18.203.523 16.421 0 14.5 0v2zm3.5.253v13h2v-13h-2zm1.553 12.167C18.203 13.523 16.421 13 14.5 13v2c1.573 0 2.961.431 3.947 1.086l1.107-1.666zM14.5 13c-1.92 0-3.703.523-5.053 1.42l1.107 1.666C11.539 15.431 12.928 15 14.5 15v-2z"
+    />
+  </svg>
+</template>

web/src/components/icons/IconEcosystem.vue

@@ -0,0 +1,7 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" width="18" height="20" fill="currentColor">
+    <path
+      d="M11.447 8.894a1 1 0 1 0-.894-1.789l.894 1.789zm-2.894-.789a1 1 0 1 0 .894 1.789l-.894-1.789zm0 1.789a1 1 0 1 0 .894-1.789l-.894 1.789zM7.447 7.106a1 1 0 1 0-.894 1.789l.894-1.789zM10 9a1 1 0 1 0-2 0h2zm-2 2.5a1 1 0 1 0 2 0H8zm9.447-5.606a1 1 0 1 0-.894-1.789l.894 1.789zm-2.894-.789a1 1 0 1 0 .894 1.789l-.894-1.789zm2 .789a1 1 0 1 0 .894-1.789l-.894 1.789zm-1.106-2.789a1 1 0 1 0-.894 1.789l.894-1.789zM18 5a1 1 0 1 0-2 0h2zm-2 2.5a1 1 0 1 0 2 0h-2zm-5.447-4.606a1 1 0 1 0 .894-1.789l-.894 1.789zM9 1l.447-.894a1 1 0 0 0-.894 0L9 1zm-2.447.106a1 1 0 1 0 .894 1.789l-.894-1.789zm-6 3a1 1 0 1 0 .894 1.789L.553 4.106zm2.894.789a1 1 0 1 0-.894-1.789l.894 1.789zm-2-.789a1 1 0 1 0-.894 1.789l.894-1.789zm1.106 2.789a1 1 0 1 0 .894-1.789l-.894 1.789zM2 5a1 1 0 1 0-2 0h2zM0 7.5a1 1 0 1 0 2 0H0zm8.553 12.394a1 1 0 1 0 .894-1.789l-.894 1.789zm-1.106-2.789a1 1 0 1 0-.894 1.789l.894-1.789zm1.106 1a1 1 0 1 0 .894 1.789l-.894-1.789zm2.894.789a1 1 0 1 0-.894-1.789l.894 1.789zM8 19a1 1 0 1 0 2 0H8zm2-2.5a1 1 0 1 0-2 0h2zm-7.447.394a1 1 0 1 0 .894-1.789l-.894 1.789zM1 15H0a1 1 0 0 0 .553.894L1 15zm1-2.5a1 1 0 1 0-2 0h2zm12.553 2.606a1 1 0 1 0 .894 1.789l-.894-1.789zM17 15l.447.894A1 1 0 0 0 18 15h-1zm1-2.5a1 1 0 1 0-2 0h2zm-7.447-5.394l-2 1 .894 1.789 2-1-.894-1.789zm-1.106 1l-2-1-.894 1.789 2 1 .894-1.789zM8 9v2.5h2V9H8zm8.553-4.894l-2 1 .894 1.789 2-1-.894-1.789zm.894 0l-2-1-.894 1.789 2 1 .894-1.789zM16 5v2.5h2V5h-2zm-4.553-3.894l-2-1-.894 1.789 2 1 .894-1.789zm-2.894-1l-2 1 .894 1.789 2-1L8.553.106zM1.447 5.894l2-1-.894-1.789-2 1 .894 1.789zm-.894 0l2 1 .894-1.789-2-1-.894 1.789zM0 5v2.5h2V5H0zm9.447 13.106l-2-1-.894 1.789 2 1 .894-1.789zm0 1.789l2-1-.894-1.789-2 1 .894 1.789zM10 19v-2.5H8V19h2zm-6.553-3.894l-2-1-.894 1.789 2 1 .894-1.789zM2 15v-2.5H0V15h2zm13.447 1.894l2-1-.894-1.789-2 1 .894 1.789zM18 15v-2.5h-2V15h2z"
+    />
+  </svg>
+</template>

web/src/components/icons/IconSupport.vue

@@ -0,0 +1,7 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="currentColor">
+    <path
+      d="M10 3.22l-.61-.6a5.5 5.5 0 0 0-7.666.105 5.5 5.5 0 0 0-.114 7.665L10 18.78l8.39-8.4a5.5 5.5 0 0 0-.114-7.665 5.5 5.5 0 0 0-7.666-.105l-.61.61z"
+    />
+  </svg>
+</template>

web/src/components/icons/IconTooling.vue

@@ -0,0 +1,19 @@
+<!-- This icon is from <https://github.com/Templarian/MaterialDesign>, distributed under Apache 2.0 (https://www.apache.org/licenses/LICENSE-2.0) license-->
+<template>
+  <svg
+    xmlns="http://www.w3.org/2000/svg"
+    xmlns:xlink="http://www.w3.org/1999/xlink"
+    aria-hidden="true"
+    role="img"
+    class="iconify iconify--mdi"
+    width="24"
+    height="24"
+    preserveAspectRatio="xMidYMid meet"
+    viewBox="0 0 24 24"
+  >
+    <path
+      d="M20 18v-4h-3v1h-2v-1H9v1H7v-1H4v4h16M6.33 8l-1.74 4H7v-1h2v1h6v-1h2v1h2.41l-1.74-4H6.33M9 5v1h6V5H9m12.84 7.61c.1.22.16.48.16.8V18c0 .53-.21 1-.6 1.41c-.4.4-.85.59-1.4.59H4c-.55 0-1-.19-1.4-.59C2.21 19 2 18.53 2 18v-4.59c0-.32.06-.58.16-.8L4.5 7.22C4.84 6.41 5.45 6 6.33 6H7V5c0-.55.18-1 .57-1.41C7.96 3.2 8.44 3 9 3h6c.56 0 1.04.2 1.43.59c.39.41.57.86.57 1.41v1h.67c.88 0 1.49.41 1.83 1.22l2.34 5.39z"
+      fill="currentColor"
+    ></path>
+  </svg>
+</template>

web/src/i18n.js

@@ -0,0 +1,131 @@
+import { createI18n } from 'vue-i18n'
+
+const messages = {
+  en: {
+    nav: {
+      dashboard: 'Dashboard',
+      data: 'Data Management',
+      signals: 'Signals',
+      backtest: 'Backtest',
+      settings: 'Settings',
+      docs: 'Documentation'
+    },
+    dashboard: {
+      title: 'Dashboard',
+      totalReturn: 'Total Return',
+      sharpeRatio: 'Sharpe Ratio',
+      maxDrawdown: 'Max Drawdown',
+      winRate: 'Win Rate',
+      goldSilverPrices: 'Gold & Silver Prices',
+      gsr: 'Gold-Silver Ratio'
+    },
+    data: {
+      title: 'Data Management',
+      fetchData: 'Generate Sample Data',
+      startDate: 'Start Date',
+      endDate: 'End Date',
+      fetch: 'Generate',
+      availableData: 'Database Records',
+      date: 'Date',
+      gold: 'Gold',
+      silver: 'Silver',
+      gsr: 'GSR',
+      regime: 'Regime',
+      position: 'Position',
+      lowVol: 'Low Vol',
+      highVol: 'High Vol'
+    },
+    signals: {
+      title: 'Trading Signals'
+    },
+    backtest: {
+      title: 'Backtest Results',
+      run: 'Run Backtest',
+      numTrades: 'Number of Trades'
+    },
+    settings: {
+      title: 'Backtest Settings',
+      rollingWindow: 'Rolling Window (days)',
+      gsrUpper: 'GSR Upper Threshold',
+      gsrLower: 'GSR Lower Threshold',
+      zscoreThreshold: 'Z-Score Threshold',
+      initialCapital: 'Initial Capital ($)',
+      save: 'Save Settings',
+      saved: 'Settings saved successfully!'
+    },
+    positions: {
+      buy_gold_sell_silver: 'Buy Gold/Sell Silver',
+      buy_silver_sell_gold: 'Buy Silver/Sell Gold',
+      flat: 'Flat',
+      reduced: 'Reduced'
+    }
+  },
+  zh: {
+    nav: {
+      dashboard: '仪表盘',
+      data: '数据管理',
+      signals: '交易信号',
+      backtest: '回测',
+      settings: '设置',
+      docs: '系统说明'
+    },
+    dashboard: {
+      title: '仪表盘',
+      totalReturn: '总收益',
+      sharpeRatio: '夏普比率',
+      maxDrawdown: '最大回撤',
+      winRate: '胜率',
+      goldSilverPrices: '黄金白银价格',
+      gsr: '金银比'
+    },
+    data: {
+      title: '数据管理',
+      fetchData: '生成模拟数据',
+      startDate: '开始日期',
+      endDate: '结束日期',
+      fetch: '生成',
+      availableData: '数据库记录',
+      date: '日期',
+      gold: '黄金',
+      silver: '白银',
+      gsr: '金银比',
+      regime: '市场状态',
+      position: '持仓',
+      lowVol: '低波动',
+      highVol: '高波动'
+    },
+    signals: {
+      title: '交易信号'
+    },
+    backtest: {
+      title: '回测结果',
+      run: '运行回测',
+      numTrades: '交易次数'
+    },
+    settings: {
+      title: '回测设置',
+      rollingWindow: '滚动窗口 (天)',
+      gsrUpper: '金银比上限阈值',
+      gsrLower: '金银比下限阈值',
+      zscoreThreshold: 'Z分数阈值',
+      initialCapital: '初始资金 ($)',
+      save: '保存设置',
+      saved: '设置保存成功!'
+    },
+    positions: {
+      buy_gold_sell_silver: '买黄金/卖白银',
+      buy_silver_sell_gold: '买白银/卖黄金',
+      flat: '空仓',
+      reduced: '减仓'
+    }
+  }
+}
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'zh',
+  fallbackLocale: 'en',
+  messages
+})
+
+export default i18n

web/src/main.js

@@ -0,0 +1,7 @@
+import { createApp } from 'vue'
+import i18n from './i18n.js'
+import App from './App.vue'
+
+const app = createApp(App)
+app.use(i18n)
+app.mount('#app')

web/vite.config.js

@@ -0,0 +1,18 @@
+import { fileURLToPath, URL } from 'node:url'
+
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import vueDevTools from 'vite-plugin-vue-devtools'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [
+    vue(),
+    vueDevTools(),
+  ],
+  resolve: {
+    alias: {
+      '@': fileURLToPath(new URL('./src', import.meta.url))
+    },
+  },
+})