fix: KuCoin timestamp sync, improve no-coins handling, update README icons

- Add server time synchronization for KuCoin API to fix timestamp error (400002)
- Return empty list instead of error when no available coins (ai500.go)
- Save cycle record even when no candidate coins (show in frontend without red error)
- Update Claude icon to Anthropic dark brand color (#141413)
- Add exchange and AI model icons to README.md and README.ja.md

README.ja.md

@@ -103,6 +103,43 @@ Binance互換の分散型無期限先物取引所！
 
 ---
 
+## 対応取引所
+
+### CEX（中央集権型取引所）
+
+| 取引所 | ステータス | 登録（手数料割引） |
+|:-------|:----------:|:-------------------|
+| <img src="web/public/exchange-icons/binance.jpg" width="20" height="20" style="vertical-align: middle;"/> **Binance** | ✅ | [登録](https://www.binance.com/join?ref=NOFXENG) |
+| <img src="web/public/exchange-icons/bybit.png" width="20" height="20" style="vertical-align: middle;"/> **Bybit** | ✅ | [登録](https://partner.bybit.com/b/83856) |
+| <img src="web/public/exchange-icons/okx.svg" width="20" height="20" style="vertical-align: middle;"/> **OKX** | ✅ | [登録](https://www.okx.com/join/1865360) |
+| <img src="web/public/exchange-icons/bitget.svg" width="20" height="20" style="vertical-align: middle;"/> **Bitget** | ✅ | [登録](https://www.bitget.com/referral/register?from=referral&clacCode=c8a43172) |
+| <img src="web/public/exchange-icons/kucoin.svg" width="20" height="20" style="vertical-align: middle;"/> **KuCoin** | ✅ | [登録](https://www.kucoin.com/r/broker/CXEV7XKK) |
+| <img src="web/public/exchange-icons/gate.svg" width="20" height="20" style="vertical-align: middle;"/> **Gate** | ✅ | [登録](https://www.gatenode.xyz/share/VQBGUAxY) |
+
+### Perp-DEX（分散型無期限取引所）
+
+| 取引所 | ステータス | 登録（手数料割引） |
+|:-------|:----------:|:-------------------|
+| <img src="web/public/exchange-icons/hyperliquid.png" width="20" height="20" style="vertical-align: middle;"/> **Hyperliquid** | ✅ | [登録](https://app.hyperliquid.xyz/join/AITRADING) |
+| <img src="web/public/exchange-icons/aster.svg" width="20" height="20" style="vertical-align: middle;"/> **Aster DEX** | ✅ | [登録](https://www.asterdex.com/en/referral/fdfc0e) |
+| <img src="web/public/exchange-icons/lighter.png" width="20" height="20" style="vertical-align: middle;"/> **Lighter** | ✅ | [登録](https://app.lighter.xyz/?referral=68151432) |
+
+---
+
+## 対応AIモデル
+
+| AIモデル | ステータス | APIキー取得 |
+|:---------|:----------:|:------------|
+| <img src="web/public/icons/deepseek.svg" width="20" height="20" style="vertical-align: middle;"/> **DeepSeek** | ✅ | [APIキー取得](https://platform.deepseek.com) |
+| <img src="web/public/icons/qwen.svg" width="20" height="20" style="vertical-align: middle;"/> **Qwen** | ✅ | [APIキー取得](https://dashscope.console.aliyun.com) |
+| <img src="web/public/icons/openai.svg" width="20" height="20" style="vertical-align: middle;"/> **OpenAI (GPT)** | ✅ | [APIキー取得](https://platform.openai.com) |
+| <img src="web/public/icons/claude.svg" width="20" height="20" style="vertical-align: middle;"/> **Claude** | ✅ | [APIキー取得](https://console.anthropic.com) |
+| <img src="web/public/icons/gemini.svg" width="20" height="20" style="vertical-align: middle;"/> **Gemini** | ✅ | [APIキー取得](https://aistudio.google.com) |
+| <img src="web/public/icons/grok.svg" width="20" height="20" style="vertical-align: middle;"/> **Grok** | ✅ | [APIキー取得](https://console.x.ai) |
+| <img src="web/public/icons/kimi.svg" width="20" height="20" style="vertical-align: middle;"/> **Kimi** | ✅ | [APIキー取得](https://platform.moonshot.cn) |
+
+---
+
 ## 📸 スクリーンショット
 
 ### 🏆 競争モード - リアルタイムAIバトル

README.md

@@ -78,35 +78,35 @@ To use NOFX, you'll need:
 ### CEX (Centralized Exchanges)
 
 | Exchange | Status | Register (Fee Discount) |
-|----------|--------|-------------------------|
+|:---------|:------:|:------------------------|
-| **Binance** | ✅ Supported | [Register](https://www.binance.com/join?ref=NOFXENG) |
+| <img src="web/public/exchange-icons/binance.jpg" width="20" height="20" style="vertical-align: middle;"/> **Binance** | ✅ | [Register](https://www.binance.com/join?ref=NOFXENG) |
-| **Bybit** | ✅ Supported | [Register](https://partner.bybit.com/b/83856) |
+| <img src="web/public/exchange-icons/bybit.png" width="20" height="20" style="vertical-align: middle;"/> **Bybit** | ✅ | [Register](https://partner.bybit.com/b/83856) |
-| **OKX** | ✅ Supported | [Register](https://www.okx.com/join/1865360) |
+| <img src="web/public/exchange-icons/okx.svg" width="20" height="20" style="vertical-align: middle;"/> **OKX** | ✅ | [Register](https://www.okx.com/join/1865360) |
-| **Bitget** | ✅ Supported | [Register](https://www.bitget.com/referral/register?from=referral&clacCode=c8a43172) |
+| <img src="web/public/exchange-icons/bitget.svg" width="20" height="20" style="vertical-align: middle;"/> **Bitget** | ✅ | [Register](https://www.bitget.com/referral/register?from=referral&clacCode=c8a43172) |
-| **KuCoin** | ✅ Supported | [Register](https://www.kucoin.com/r/broker/CXEV7XKK) |
+| <img src="web/public/exchange-icons/kucoin.svg" width="20" height="20" style="vertical-align: middle;"/> **KuCoin** | ✅ | [Register](https://www.kucoin.com/r/broker/CXEV7XKK) |
-| **Gate** | ✅ Supported | [Register](https://www.gatenode.xyz/share/VQBGUAxY) |
+| <img src="web/public/exchange-icons/gate.svg" width="20" height="20" style="vertical-align: middle;"/> **Gate** | ✅ | [Register](https://www.gatenode.xyz/share/VQBGUAxY) |
 
 ### Perp-DEX (Decentralized Perpetual Exchanges)
 
 | Exchange | Status | Register (Fee Discount) |
-|----------|--------|-------------------------|
+|:---------|:------:|:------------------------|
-| **Hyperliquid** | ✅ Supported | [Register](https://app.hyperliquid.xyz/join/AITRADING) |
+| <img src="web/public/exchange-icons/hyperliquid.png" width="20" height="20" style="vertical-align: middle;"/> **Hyperliquid** | ✅ | [Register](https://app.hyperliquid.xyz/join/AITRADING) |
-| **Aster DEX** | ✅ Supported | [Register](https://www.asterdex.com/en/referral/fdfc0e) |
+| <img src="web/public/exchange-icons/aster.svg" width="20" height="20" style="vertical-align: middle;"/> **Aster DEX** | ✅ | [Register](https://www.asterdex.com/en/referral/fdfc0e) |
-| **Lighter** | ✅ Supported | [Register](https://app.lighter.xyz/?referral=68151432) |
+| <img src="web/public/exchange-icons/lighter.png" width="20" height="20" style="vertical-align: middle;"/> **Lighter** | ✅ | [Register](https://app.lighter.xyz/?referral=68151432) |
 
 ---
 
 ## Supported AI Models
 
 | AI Model | Status | Get API Key |
-|----------|--------|-------------|
+|:---------|:------:|:------------|
-| **DeepSeek** | ✅ Supported | [Get API Key](https://platform.deepseek.com) |
+| <img src="web/public/icons/deepseek.svg" width="20" height="20" style="vertical-align: middle;"/> **DeepSeek** | ✅ | [Get API Key](https://platform.deepseek.com) |
-| **Qwen** | ✅ Supported | [Get API Key](https://dashscope.console.aliyun.com) |
+| <img src="web/public/icons/qwen.svg" width="20" height="20" style="vertical-align: middle;"/> **Qwen** | ✅ | [Get API Key](https://dashscope.console.aliyun.com) |
-| **OpenAI (GPT)** | ✅ Supported | [Get API Key](https://platform.openai.com) |
+| <img src="web/public/icons/openai.svg" width="20" height="20" style="vertical-align: middle;"/> **OpenAI (GPT)** | ✅ | [Get API Key](https://platform.openai.com) |
-| **Claude** | ✅ Supported | [Get API Key](https://console.anthropic.com) |
+| <img src="web/public/icons/claude.svg" width="20" height="20" style="vertical-align: middle;"/> **Claude** | ✅ | [Get API Key](https://console.anthropic.com) |
-| **Gemini** | ✅ Supported | [Get API Key](https://aistudio.google.com) |
+| <img src="web/public/icons/gemini.svg" width="20" height="20" style="vertical-align: middle;"/> **Gemini** | ✅ | [Get API Key](https://aistudio.google.com) |
-| **Grok** | ✅ Supported | [Get API Key](https://console.x.ai) |
+| <img src="web/public/icons/grok.svg" width="20" height="20" style="vertical-align: middle;"/> **Grok** | ✅ | [Get API Key](https://console.x.ai) |
-| **Kimi** | ✅ Supported | [Get API Key](https://platform.moonshot.cn) |
+| <img src="web/public/icons/kimi.svg" width="20" height="20" style="vertical-align: middle;"/> **Kimi** | ✅ | [Get API Key](https://platform.moonshot.cn) |
 
 ---
 

provider/nofxos/ai500.go

@@ -105,7 +105,8 @@ func (c *Client) GetTopRatedCoins(limit int) ([]string, error) {
 	}
 
 	if len(availableCoins) == 0 {
-		return nil, fmt.Errorf("no available coins")
+		// Empty list is normal - just return empty slice, not an error
+		return []string{}, nil
 	}
 
 	// Sort by Score descending (bubble sort)
@@ -147,10 +148,7 @@ func (c *Client) GetAvailableCoins() ([]string, error) {
 		}
 	}
 
-	if len(symbols) == 0 {
+	// Empty list is normal - just return empty slice, not an error
-		return nil, fmt.Errorf("no available coins")
-	}
-
 	return symbols, nil
 }
 

trader/auto_trader.go

@@ -578,9 +578,19 @@ func (at *AutoTrader) runCycle() error {
 	// NOTE: Must be called BEFORE candidate coins check to ensure equity is always recorded
 	at.saveEquitySnapshot(ctx)
 
-	// 如果没有候选币种，友好提示并跳过本周期
+	// 如果没有候选币种，记录但不报错
 	if len(ctx.CandidateCoins) == 0 {
 		logger.Infof("ℹ️  No candidate coins available, skipping this cycle")
+		record.Success = true // 不是错误，只是没有候选币
+		record.ExecutionLog = append(record.ExecutionLog, "No candidate coins available, cycle skipped")
+		record.AccountState = store.AccountSnapshot{
+			TotalBalance:          ctx.Account.TotalEquity,
+			AvailableBalance:      ctx.Account.AvailableBalance,
+			TotalUnrealizedProfit: ctx.Account.UnrealizedPnL,
+			PositionCount:         ctx.Account.PositionCount,
+			InitialBalance:        at.initialBalance,
+		}
+		at.saveDecision(record)
 		return nil
 	}
 

trader/kucoin/trader.go

@@ -50,6 +50,10 @@ type KuCoinTrader struct {
 	// HTTP client
 	httpClient *http.Client
 
+	// Server time offset (local - server) in milliseconds
+	serverTimeOffset int64
+	serverTimeMutex  sync.RWMutex
+
 	// Balance cache
 	cachedBalance     map[string]interface{}
 	balanceCacheTime  time.Time
@@ -107,10 +111,64 @@ func NewKuCoinTrader(apiKey, secretKey, passphrase string) *KuCoinTrader {
 		contractsCache: make(map[string]*KuCoinContract),
 	}
 
+	// Sync server time on initialization
+	if err := trader.syncServerTime(); err != nil {
+		logger.Warnf("⚠️ Failed to sync KuCoin server time: %v (will retry on first request)", err)
+	}
+
 	logger.Infof("✓ KuCoin Futures trader initialized")
 	return trader
 }
 
+// syncServerTime fetches KuCoin server time and calculates offset
+func (t *KuCoinTrader) syncServerTime() error {
+	resp, err := t.httpClient.Get(kucoinBaseURL + "/api/v1/timestamp")
+	if err != nil {
+		return fmt.Errorf("failed to get server time: %w", err)
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return fmt.Errorf("failed to read response: %w", err)
+	}
+
+	var result struct {
+		Code string `json:"code"`
+		Data int64  `json:"data"`
+	}
+
+	if err := json.Unmarshal(body, &result); err != nil {
+		return fmt.Errorf("failed to parse response: %w", err)
+	}
+
+	if result.Code != "200000" {
+		return fmt.Errorf("server time API error: %s", result.Code)
+	}
+
+	serverTime := result.Data
+	localTime := time.Now().UnixMilli()
+	offset := localTime - serverTime
+
+	t.serverTimeMutex.Lock()
+	t.serverTimeOffset = offset
+	t.serverTimeMutex.Unlock()
+
+	logger.Infof("✓ KuCoin time synced: offset=%dms (local %d - server %d)", offset, localTime, serverTime)
+	return nil
+}
+
+// getTimestamp returns the current timestamp adjusted for server time offset
+func (t *KuCoinTrader) getTimestamp() string {
+	t.serverTimeMutex.RLock()
+	offset := t.serverTimeOffset
+	t.serverTimeMutex.RUnlock()
+
+	// Subtract offset to get server time from local time
+	timestamp := time.Now().UnixMilli() - offset
+	return strconv.FormatInt(timestamp, 10)
+}
+
 // sign generates KuCoin API signature
 func (t *KuCoinTrader) sign(timestamp, method, requestPath, body string) string {
 	// KuCoin signature: base64(HMAC-SHA256(timestamp + method + endpoint + body, secretKey))
@@ -147,7 +205,7 @@ func (t *KuCoinTrader) doRequest(method, path string, body interface{}) ([]byte,
 		}
 	}
 
-	timestamp := strconv.FormatInt(time.Now().UnixMilli(), 10)
+	timestamp := t.getTimestamp()
 	signature := t.sign(timestamp, method, path, string(bodyBytes))
 	signedPassphrase := t.signPassphrase(t.passphrase)
 
@@ -186,6 +244,13 @@ func (t *KuCoinTrader) doRequest(method, path string, body interface{}) ([]byte,
 	}
 
 	if kcResp.Code != "200000" {
+		// If timestamp error, try to re-sync server time
+		if kcResp.Code == "400002" || strings.Contains(kcResp.Msg, "TIMESTAMP") {
+			logger.Warnf("⚠️ KuCoin timestamp error, re-syncing server time...")
+			if err := t.syncServerTime(); err != nil {
+				logger.Warnf("⚠️ Failed to re-sync server time: %v", err)
+			}
+		}
 		return nil, fmt.Errorf("KuCoin API error: code=%s, msg=%s", kcResp.Code, kcResp.Msg)
 	}
 

web/public/icons/claude.svg

@@ -1,4 +1,4 @@
 <svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
   <title>Claude</title>
-  <path fill="#D97757" d="M17.3041 3.541h-3.6718l6.696 16.918H24Zm-10.6082 0L0 20.459h3.7442l1.3693-3.5527h7.0052l1.3693 3.5528h3.7442L10.5363 3.5409Zm-.3712 10.2232 2.2914-5.9456 2.2914 5.9456Z"/>
+  <path fill="#141413" d="M17.3041 3.541h-3.6718l6.696 16.918H24Zm-10.6082 0L0 20.459h3.7442l1.3693-3.5527h7.0052l1.3693 3.5528h3.7442L10.5363 3.5409Zm-.3712 10.2232 2.2914-5.9456 2.2914 5.9456Z"/>
 </svg>