fix: update token limits and error handling in Trader Dashboard

docs/token-estimation.zh-CN.md

@@ -82,12 +82,12 @@ maxSafeCoins = floor((budget - staticTokens) / perCoinTokens)
 
 ### 各模型下的最大安全币数
 
-| 模型上限                       | 最小配置    | 默认配置        | 最大配置    |
-| ------------------------------ | ----------- | --------------- | ----------- |
-| 131K（DeepSeek / Grok / Qwen） | ≥50（封顶） | **58**          | **14**      |
-| 128K（OpenAI GPT-4）           | ≥50（封顶） | **57**          | **14**      |
-| 200K（Claude）                 | ≥50（封顶） | **89 → 封顶50** | **22**      |
-| 1M（Gemini / Minimax）         | ≥50（封顶） | ≥50（封顶）     | ≥50（封顶） |
+| 模型上限                       | 最小配置     | 默认配置     | 最大配置    |
+| ------------------------------ | ------------ | ------------ | ----------- |
+| 131K（DeepSeek / Grok / Qwen） | ≥10（封顶）  | ≥10（封顶）  | **14**      |
+| 128K（OpenAI GPT-4）           | ≥10（封顶）  | ≥10（封顶）  | **14**      |
+| 200K（Claude）                 | ≥10（封顶）  | ≥10（封顶）  | ≥10（封顶） |
+| 1M（Gemini / Minimax）         | ≥10（封顶）  | ≥10（封顶）  | ≥10（封顶） |
 
 ---
 
@@ -114,7 +114,7 @@ maxSafeCoins = floor((budget - staticTokens) / perCoinTokens)
 
 ```go
 const (
-    MaxCandidateCoins = 50   // UI 硬限制：用户最多设定的候选币数量
+    MaxCandidateCoins = 10   // UI 硬限制：用户最多设定的候选币数量
     MaxPositions      = 3    // 最大同时持仓数
     MaxTimeframes     = 4    // 最大时间框架数
     MinKlineCount     = 10   // 最少 K 线数
@@ -122,11 +122,11 @@ const (
 )
 ```
 
-### 为什么 MaxCandidateCoins = 50？
+### 为什么 MaxCandidateCoins = 10？
 
-- **默认配置**下 50 枚币约用 **~8,000 tokens**（~6% of 131K），完全安全
-- **极端配置**（4TF + 全指标）50 枚币会超过 131K 限制，但 **runtime token-blocking** 会在分析前拦截并报错
-- 因此 50 是合理的 UI 上限：一方面给用户足够灵活性，另一方面依赖运行时保护防止真正的溢出
+- **默认配置**下 10 枚币约用 **~15,000 tokens**（~12% of 131K），完全安全
+- **极端配置**（4TF + 全指标）10 枚币约用 **~60,000 tokens**（~46% of 131K），仍有充足余量
+- 因此 10 是保守且安全的 UI 上限：在所有模型和配置组合下均不会触发 token 限制
 
 ### 建议使用范围
 

store/strategy.go

@@ -602,16 +602,28 @@ type ModelLimit struct {
 	Level        string `json:"level"` // "ok" | "warning" | "danger"
 }
 
+// Context window sizes (tokens) for each model family
+const (
+	contextLimitDeepSeek = 131_072   // 128K
+	contextLimitOpenAI   = 128_000   // 128K
+	contextLimitClaude   = 200_000   // 200K
+	contextLimitQwen     = 131_072   // 128K
+	contextLimitGemini   = 1_000_000 // 1M
+	contextLimitGrok     = 131_072   // 128K
+	contextLimitKimi     = 131_072   // 128K
+	contextLimitMinimax  = 1_000_000 // 1M
+)
+
 // ModelContextLimits maps provider names to their context window sizes (in tokens)
 var ModelContextLimits = map[string]int{
-	"deepseek": 131072,
-	"openai":   128000,
-	"claude":   200000,
-	"qwen":     131072,
-	"gemini":   1000000,
-	"grok":     131072,
-	"kimi":     131072,
-	"minimax":  1000000,
+	"deepseek": contextLimitDeepSeek,
+	"openai":   contextLimitOpenAI,
+	"claude":   contextLimitClaude,
+	"qwen":     contextLimitQwen,
+	"gemini":   contextLimitGemini,
+	"grok":     contextLimitGrok,
+	"kimi":     contextLimitKimi,
+	"minimax":  contextLimitMinimax,
 }
 
 // GetContextLimit returns the context limit for a given provider
@@ -619,7 +631,7 @@ func GetContextLimit(provider string) int {
 	if limit, ok := ModelContextLimits[provider]; ok {
 		return limit
 	}
-	return 131072 // safe default
+	return contextLimitDeepSeek // safe default
 }
 
 // GetContextLimitForClient returns context limit for a provider+model pair.
@@ -639,6 +651,10 @@ func GetContextLimitForClient(provider, model string) int {
 			return ModelContextLimits["kimi"]
 		case strings.HasPrefix(model, "qwen"):
 			return ModelContextLimits["qwen"]
+		case strings.HasPrefix(model, "minimax"):
+			return ModelContextLimits["minimax"]
+		case strings.HasPrefix(model, "deepseek"):
+			return ModelContextLimits["deepseek"]
 		default:
 			return ModelContextLimits["deepseek"]
 		}

web/src/App.tsx

@@ -323,8 +323,8 @@ function App() {
   const selectedTrader = traders?.find((t) => t.trader_id === selectedTraderId)
 
   const effectiveAccount = account
-  const effectivePositions = (positionsPollOff && !positions) ? [] as Position[] : positions
-  const effectiveDecisions = (decisionsPollOff && !decisions) ? [] as DecisionRecord[] : decisions
+  const effectivePositions = positions
+  const effectiveDecisions = decisions
 
   // Handle routing
   useEffect(() => {
@@ -544,7 +544,9 @@ function App() {
                 account={effectiveAccount}
                 accountFailed={accountPollOff}
                 positions={effectivePositions}
+                positionsFailed={positionsPollOff}
                 decisions={effectiveDecisions}
+                decisionsFailed={decisionsPollOff}
                 decisionsLimit={decisionsLimit}
                 onDecisionsLimitChange={setDecisionsLimit}
                 stats={stats}

web/src/i18n/translations.ts

@@ -1167,6 +1167,9 @@ export const translations = {
       close: 'Close',
       showingPositions: 'Showing {shown} of {total} positions',
       perPage: 'Per page',
+      accountFetchFailed: 'DATA_FETCH::FAILED — Account data unavailable, check connection',
+      positionsFetchFailed: 'Position data unavailable',
+      decisionsFetchFailed: 'Decision data unavailable',
     },
 
     // AITradersPage toast messages
@@ -2467,6 +2470,9 @@ export const translations = {
       close: '平仓',
       showingPositions: '显示 {shown} / {total} 个持仓',
       perPage: '每页',
+      accountFetchFailed: 'DATA_FETCH::FAILED — 账户数据请求失败，请检查连接',
+      positionsFetchFailed: '持仓数据请求失败',
+      decisionsFetchFailed: '决策记录请求失败',
     },
 
     aiTradersToast: {
@@ -3570,6 +3576,9 @@ export const translations = {
       close: 'Tutup',
       showingPositions: 'Menampilkan {shown} dari {total} posisi',
       perPage: 'Per halaman',
+      accountFetchFailed: 'DATA_FETCH::FAILED — Data akun tidak tersedia, periksa koneksi',
+      positionsFetchFailed: 'Data posisi tidak tersedia',
+      decisionsFetchFailed: 'Data keputusan tidak tersedia',
     },
 
     aiTradersToast: {

web/src/pages/TraderDashboardPage.tsx

@@ -105,7 +105,9 @@ interface TraderDashboardPageProps {
     account?: AccountInfo
     accountFailed?: boolean
     positions?: Position[]
+    positionsFailed?: boolean
     decisions?: DecisionRecord[]
+    decisionsFailed?: boolean
     decisionsLimit: number
     onDecisionsLimitChange: (limit: number) => void
     stats?: Statistics
@@ -120,7 +122,9 @@ export function TraderDashboardPage({
     account,
     accountFailed,
     positions,
+    positionsFailed,
     decisions,
+    decisionsFailed,
     decisionsLimit,
     onDecisionsLimitChange,
     lastUpdate,
@@ -491,7 +495,7 @@ export function TraderDashboardPage({
                             <span>PNL::{account.total_pnl?.toFixed(2)}</span>
                         </div>
                     ) : accountFailed ? (
-                        <span style={{ color: '#F6465D' }}>DATA_FETCH::FAILED — 账户数据请求失败，请检查连接</span>
+                        <span style={{ color: '#F6465D' }}>{t('traderDashboard.accountFetchFailed', language)}</span>
                     ) : (
                         <div className="flex gap-4">
                             <span className="inline-block w-32 h-3 rounded bg-white/5 animate-pulse" />
@@ -723,6 +727,11 @@ export function TraderDashboardPage({
                                         </div>
                                     )}
                                 </div>
+                            ) : positionsFailed ? (
+                                <div className="text-center py-16 text-nofx-text-muted opacity-60">
+                                    <div className="text-4xl mb-4">⚠️</div>
+                                    <div className="text-lg font-semibold mb-2">{t('traderDashboard.positionsFetchFailed', language)}</div>
+                                </div>
                             ) : (
                                 <div className="text-center py-16 text-nofx-text-muted opacity-60">
                                     <div className="text-6xl mb-4 opacity-50 grayscale">📊</div>
@@ -776,6 +785,11 @@ export function TraderDashboardPage({
                                 decisions.map((decision, i) => (
                                     <DecisionCard key={i} decision={decision} language={language} onSymbolClick={handleSymbolClick} />
                                 ))
+                            ) : decisionsFailed ? (
+                                <div className="py-16 text-center text-nofx-text-muted opacity-60">
+                                    <div className="text-4xl mb-4">⚠️</div>
+                                    <div className="text-lg font-semibold mb-2">{t('traderDashboard.decisionsFetchFailed', language)}</div>
+                                </div>
                             ) : (
                                 <div className="py-16 text-center text-nofx-text-muted opacity-60">
                                     <div className="text-6xl mb-4 opacity-30 grayscale">🧠</div>