fix: adaptive price precision for meme coins

- Add adaptivePriceRound() in store/position.go for database storage
- Update position_builder.go to use adaptive precision for entry/exit prices
- Add Gate to OrderSync skip list in auto_trader.go
- Add debug logging in gate/order_sync.go for price parsing issues
- Create web/src/utils/format.ts with formatPrice() for frontend display
- Update TraderDashboardPage.tsx and PositionHistory.tsx to use adaptive formatting

Fixes issue where meme coin prices (e.g. 0.000000166) displayed as 0.0000

web/src/components/PositionHistory.tsx

@@ -3,6 +3,7 @@ import { api } from '../lib/api'
 import { useLanguage } from '../contexts/LanguageContext'
 import { t } from '../i18n/translations'
 import { MetricTooltip } from './MetricTooltip'
+import { formatPrice, formatQuantity } from '../utils/format'
 import type {
   HistoricalPosition,
   TraderStats,
@@ -14,7 +15,7 @@ interface PositionHistoryProps {
   traderId: string
 }
 
-// Format number with proper decimals
+// Format number with proper decimals (for large numbers)
 function formatNumber(value: number, decimals: number = 2): string {
   if (Math.abs(value) >= 1000000) {
     return (value / 1000000).toFixed(2) + 'M'
@@ -25,14 +26,6 @@ function formatNumber(value: number, decimals: number = 2): string {
   return value.toFixed(decimals)
 }
 
-// Format price with proper decimals
-function formatPrice(price: number): string {
-  if (!price || price === 0) return '-'
-  if (price >= 1000) return price.toFixed(2)
-  if (price >= 1) return price.toFixed(4)
-  return price.toFixed(6)
-}
-
 // Format duration from minutes
 function formatDuration(minutes: number): string {
   if (!minutes || minutes <= 0) return '-'
@@ -300,7 +293,7 @@ function PositionRow({ position }: { position: HistoricalPosition }) {
 
       {/* Quantity */}
       <td className="py-3 px-4 text-right font-mono" style={{ color: '#848E9C' }}>
-        {displayQty.toFixed(4)}
+        {formatQuantity(displayQty)}
       </td>
 
       {/* Position Value (Entry Price * Quantity) */}

web/src/pages/TraderDashboardPage.tsx

@@ -6,6 +6,7 @@ import { DecisionCard } from '../components/DecisionCard'
 import { PositionHistory } from '../components/PositionHistory'
 import { PunkAvatar, getTraderAvatar } from '../components/PunkAvatar'
 import { confirmToast, notify } from '../lib/notify'
+import { formatPrice, formatQuantity } from '../utils/format'
 import { t, type Language } from '../i18n/translations'
 import { LogOut, Loader2, Eye, EyeOff, Copy, Check } from 'lucide-react'
 import { DeepVoidBackground } from '../components/DeepVoidBackground'
@@ -653,9 +654,9 @@ export function TraderDashboardPage({
                                                                 {language === 'zh' ? '平仓' : 'Close'}
                                                             </button>
                                                         </td>
-                                                        <td className="px-1 py-3 font-mono whitespace-nowrap text-right text-nofx-text-main hidden md:table-cell">{pos.entry_price.toFixed(4)}</td>
-                                                        <td className="px-1 py-3 font-mono whitespace-nowrap text-right text-nofx-text-main hidden md:table-cell">{pos.mark_price.toFixed(4)}</td>
-                                                        <td className="px-1 py-3 font-mono whitespace-nowrap text-right text-nofx-text-main">{pos.quantity.toFixed(4)}</td>
+                                                        <td className="px-1 py-3 font-mono whitespace-nowrap text-right text-nofx-text-main hidden md:table-cell">{formatPrice(pos.entry_price)}</td>
+                                                        <td className="px-1 py-3 font-mono whitespace-nowrap text-right text-nofx-text-main hidden md:table-cell">{formatPrice(pos.mark_price)}</td>
+                                                        <td className="px-1 py-3 font-mono whitespace-nowrap text-right text-nofx-text-main">{formatQuantity(pos.quantity)}</td>
                                                         <td className="px-1 py-3 font-mono font-bold whitespace-nowrap text-right text-nofx-text-main hidden md:table-cell">{(pos.quantity * pos.mark_price).toFixed(2)}</td>
                                                         <td className="px-1 py-3 font-mono whitespace-nowrap text-center text-nofx-gold hidden md:table-cell">{pos.leverage}x</td>
                                                         <td className="px-1 py-3 font-mono whitespace-nowrap text-right">
@@ -667,7 +668,7 @@ export function TraderDashboardPage({
                                                                 {pos.unrealized_pnl.toFixed(2)}
                                                             </span>
                                                         </td>
-                                                        <td className="px-1 py-3 font-mono whitespace-nowrap text-right text-nofx-text-muted hidden md:table-cell">{pos.liquidation_price.toFixed(4)}</td>
+                                                        <td className="px-1 py-3 font-mono whitespace-nowrap text-right text-nofx-text-muted hidden md:table-cell">{formatPrice(pos.liquidation_price)}</td>
                                                     </tr>
                                                 ))}
                                             </tbody>

web/src/utils/format.ts

@@ -0,0 +1,135 @@
+/**
+ * 数字格式化工具
+ *
+ * formatPrice: 根据数值大小自适应显示精度，避免极小数显示为 0.0000
+ */
+
+/**
+ * 格式化价格，根据数值大小自适应精度
+ * 对于极小的数字（如 meme 币价格 0.000000166），会保留足够的有效数字
+ *
+ * @param price 价格数值
+ * @param minDecimals 最少小数位数（默认 2）
+ * @returns 格式化后的字符串
+ */
+export function formatPrice(price: number | undefined | null, minDecimals = 2): string {
+  if (price === undefined || price === null || isNaN(price)) {
+    return '0'
+  }
+
+  if (price === 0) {
+    return '0'
+  }
+
+  const absPrice = Math.abs(price)
+
+  // 根据价格大小决定显示精度
+  let decimals: number
+  if (absPrice < 0.000001) {
+    // 极小价格 (如 CHEEMS, SHIB 等 meme 币)
+    decimals = 15
+  } else if (absPrice < 0.0001) {
+    // 很小价格 (如 PEPE, FLOKI, BONK)
+    decimals = 12
+  } else if (absPrice < 0.01) {
+    // 小价格
+    decimals = 10
+  } else if (absPrice < 1) {
+    // 中等价格
+    decimals = 8
+  } else if (absPrice < 1000) {
+    // 正常价格
+    decimals = 4
+  } else {
+    // 大价格 (如 BTC)
+    decimals = 2
+  }
+
+  // 确保至少有 minDecimals 位小数
+  decimals = Math.max(decimals, minDecimals)
+
+  // 格式化并去除尾部多余的零
+  let formatted = price.toFixed(decimals)
+
+  // 去除尾部零（保留小数点后至少 minDecimals 位）
+  if (formatted.includes('.')) {
+    // 先去掉所有尾部零
+    formatted = formatted.replace(/\.?0+$/, '')
+    // 如果小数位不足 minDecimals，补零
+    const dotIndex = formatted.indexOf('.')
+    if (dotIndex === -1) {
+      formatted += '.' + '0'.repeat(minDecimals)
+    } else {
+      const currentDecimals = formatted.length - dotIndex - 1
+      if (currentDecimals < minDecimals) {
+        formatted += '0'.repeat(minDecimals - currentDecimals)
+      }
+    }
+  }
+
+  return formatted
+}
+
+/**
+ * 格式化数量，根据数值大小自适应精度
+ *
+ * @param quantity 数量
+ * @param minDecimals 最少小数位数（默认 2）
+ * @returns 格式化后的字符串
+ */
+export function formatQuantity(quantity: number | undefined | null, minDecimals = 2): string {
+  if (quantity === undefined || quantity === null || isNaN(quantity)) {
+    return '0'
+  }
+
+  if (quantity === 0) {
+    return '0'
+  }
+
+  const absQty = Math.abs(quantity)
+
+  let decimals: number
+  if (absQty >= 1000000) {
+    decimals = 0
+  } else if (absQty >= 1000) {
+    decimals = 2
+  } else if (absQty >= 1) {
+    decimals = 4
+  } else {
+    decimals = 8
+  }
+
+  decimals = Math.max(decimals, minDecimals)
+
+  let formatted = quantity.toFixed(decimals)
+  if (formatted.includes('.')) {
+    formatted = formatted.replace(/\.?0+$/, '')
+    const dotIndex = formatted.indexOf('.')
+    if (dotIndex === -1) {
+      formatted += '.' + '0'.repeat(minDecimals)
+    } else {
+      const currentDecimals = formatted.length - dotIndex - 1
+      if (currentDecimals < minDecimals) {
+        formatted += '0'.repeat(minDecimals - currentDecimals)
+      }
+    }
+  }
+
+  return formatted
+}
+
+/**
+ * 格式化百分比
+ *
+ * @param value 百分比值
+ * @param decimals 小数位数（默认 2）
+ * @returns 格式化后的字符串
+ */
+export function formatPercent(value: number | undefined | null, decimals = 2): string {
+  if (value === undefined || value === null || isNaN(value)) {
+    return '0.00'
+  }
+  return value.toFixed(decimals)
+}
+
+export default { formatPrice, formatQuantity, formatPercent }