修改：卖出支持小数

src/api/market.ts

@@ -15,7 +15,7 @@ export interface ClobSubmitOrderRequest {
   /** 价格（整数，已乘 10000） */
   price: number
   side: number
-  /** 数量（份额） */
+  /** 数量（micro units，1_000_000 = 1 share，支持 6 位小数份额） */
   size: number
   taker: boolean
   tokenID: string

src/components/TradeComponent.vue

@@ -97,14 +97,15 @@
             <div class="shares-header sell-shares-header">
               <span class="label">{{ t('trade.shares') }}</span>
               <span class="max-shares-inline"
-                >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+                >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
               >
             </div>
             <div class="shares-input-wrapper">
               <v-text-field
                 :model-value="shares"
                 type="number"
-                min="1"
+                :min="sharesInputMin"
+                :step="sharesInputStep"
                 class="shares-input-field"
                 hide-details
                 variant="outlined"
@@ -246,14 +247,15 @@
             <div class="shares-header sell-shares-header">
               <span class="label">{{ t('trade.shares') }}</span>
               <span class="max-shares-inline"
-                >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+                >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
               >
             </div>
             <div class="shares-input-wrapper">
               <v-text-field
                 :model-value="shares"
                 type="number"
-                min="1"
+                :min="sharesInputMin"
+                :step="sharesInputStep"
                 variant="outlined"
                 class="shares-input-field"
                 hide-details
@@ -357,14 +359,15 @@
         <div class="shares-header sell-shares-header">
           <span class="label">{{ t('trade.shares') }}</span>
           <span v-if="activeTab === 'sell'" class="max-shares-inline"
-            >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+            >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
           >
         </div>
         <div class="shares-input-wrapper">
           <v-text-field
             :model-value="shares"
             type="number"
-            min="1"
+            :min="sharesInputMin"
+            :step="sharesInputStep"
             variant="outlined"
             class="shares-input-field"
             hide-details
@@ -389,7 +392,7 @@
           <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
         </div>
         <p v-if="sellSharesExceedsMax" class="shares-exceeds-max-hint">
-          {{ t('trade.sharesExceedsMax', { max: maxAvailableShares }) }}
+          {{ t('trade.sharesExceedsMax', { max: maxAvailableSharesDisplay }) }}
         </p>
         <div v-if="activeTab === 'buy'" class="matching-info">
           <v-icon size="14">mdi-information</v-icon>
@@ -548,14 +551,15 @@
                 <div class="shares-header sell-shares-header">
                   <span class="label">{{ t('trade.shares') }}</span>
                   <span class="max-shares-inline"
-                    >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+                    >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
                   >
                 </div>
                 <div class="shares-input-wrapper">
                   <v-text-field
                     :model-value="shares"
                     type="number"
-                    min="1"
+                    :min="sharesInputMin"
+                    :step="sharesInputStep"
                     class="shares-input-field"
                     hide-details
                     density="compact"
@@ -685,14 +689,15 @@
                 <div class="shares-header sell-shares-header">
                   <span class="label">{{ t('trade.shares') }}</span>
                   <span class="max-shares-inline"
-                    >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+                    >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
                   >
                 </div>
                 <div class="shares-input-wrapper">
                   <v-text-field
                     :model-value="shares"
                     type="number"
-                    min="1"
+                    :min="sharesInputMin"
+                    :step="sharesInputStep"
                     class="shares-input-field"
                     hide-details
                     density="compact"
@@ -786,14 +791,15 @@
             <div class="shares-header sell-shares-header">
               <span class="label">{{ t('trade.shares') }}</span>
               <span v-if="activeTab === 'sell'" class="max-shares-inline"
-                >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+                >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
               >
             </div>
             <div class="shares-input-wrapper">
               <v-text-field
                 :model-value="shares"
                 type="number"
-                min="1"
+                :min="sharesInputMin"
+                :step="sharesInputStep"
                 class="shares-input-field"
                 hide-details
                 density="compact"
@@ -990,14 +996,15 @@
                   <div class="shares-header sell-shares-header">
                     <span class="label">{{ t('trade.shares') }}</span>
                     <span class="max-shares-inline"
-                      >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+                      >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
                     >
                   </div>
                   <div class="shares-input-wrapper">
                     <v-text-field
                       :model-value="shares"
                       type="number"
-                      min="1"
+                      :min="sharesInputMin"
+                      :step="sharesInputStep"
                       class="shares-input-field"
                       hide-details
                       density="compact"
@@ -1127,14 +1134,15 @@
                   <div class="shares-header sell-shares-header">
                     <span class="label">{{ t('trade.shares') }}</span>
                     <span class="max-shares-inline"
-                      >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+                      >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
                     >
                   </div>
                   <div class="shares-input-wrapper">
                     <v-text-field
                       :model-value="shares"
                       type="number"
-                      min="1"
+                      :min="sharesInputMin"
+                      :step="sharesInputStep"
                       class="shares-input-field"
                       hide-details
                       variant="outlined"
@@ -1228,14 +1236,15 @@
               <div class="shares-header sell-shares-header">
                 <span class="label">{{ t('trade.shares') }}</span>
                 <span v-if="activeTab === 'sell'" class="max-shares-inline"
-                  >{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span
+                  >{{ t('trade.maxShares') }}: {{ maxAvailableSharesDisplay }}</span
                 >
               </div>
               <div class="shares-input-wrapper">
                 <v-text-field
                   :model-value="shares"
                   type="number"
-                  min="1"
+                  :min="sharesInputMin"
+                  :step="sharesInputStep"
                   class="shares-input-field"
                   hide-details
                   density="compact"
@@ -1712,7 +1721,9 @@ const limitType = ref<'Market' | 'Limit'>(prefs.limitType)
 const expirationEnabled = ref(false)
 const selectedOption = ref<'yes' | 'no'>(props.initialOption ?? 'no')
 const limitPrice = ref(0.82) // 内部存储 0–1，显示为美分与按钮一致
-const shares = ref(20) // 初始份额（正整数）
+const shares = ref(20) // 初始份额（Buy 为正整数，Sell 支持 6 位小数）
+const ORDER_SIZE_SCALE = 1_000_000
+const ORDER_SIZE_MIN = 1 / ORDER_SIZE_SCALE
 const expirationTime = ref('5m') // 初始过期时间
 const EXPIRATION_VALUES = [
   '5m',
@@ -1836,21 +1847,44 @@ const currentOptionPositionShares = computed(() => {
   return totalShares
 })
 
-/** 最大可卖出份额 */
+/** 最大可卖出份额（保留 6 位小数） */
 const maxAvailableShares = computed(() => {
-  return Math.floor(currentOptionPositionShares.value)
+  return clampSellShares(currentOptionPositionShares.value)
 })
 
-/** 将 shares 限制为正整数（>= 1） */
+/** 展示用最大可卖份额 */
+const maxAvailableSharesDisplay = computed(() =>
+  trimTrailingZeros(maxAvailableShares.value.toFixed(6)),
+)
+
+const sharesInputMin = computed(() => (activeTab.value === 'sell' ? ORDER_SIZE_MIN : 1))
+const sharesInputStep = computed(() => (activeTab.value === 'sell' ? ORDER_SIZE_MIN : 1))
+
+/** 将 shares 限制为正整数（>= 1），Buy 模式使用 */
 function clampShares(v: number): number {
   const n = Math.floor(Number.isFinite(v) ? v : 1)
   return Math.max(1, n)
 }
 
-// 设置最大份额（基于当前选项的持仓）；Sell 模式下份额默认取最大可卖数量
+/** Sell 模式：保留 6 位小数 */
+function clampSellShares(v: number): number {
+  if (!Number.isFinite(v) || v <= 0) return 0
+  const scaled = Math.round(v * ORDER_SIZE_SCALE) / ORDER_SIZE_SCALE
+  return scaled < ORDER_SIZE_MIN ? 0 : scaled
+}
+
+function sharesToMicro(v: number): number {
+  return Math.round(v * ORDER_SIZE_SCALE)
+}
+
+// 设置最大份额（基于当前选项的持仓）
 const setMaxShares = () => {
   const maxShares = currentOptionPositionShares.value
-  shares.value = maxShares > 0 ? clampShares(maxShares) : 0
+  if (activeTab.value === 'sell') {
+    shares.value = maxShares > 0 ? clampSellShares(maxShares) : 0
+  } else {
+    shares.value = maxShares > 0 ? clampShares(maxShares) : 0
+  }
 }
 
 function applyInitialOption(option: 'yes' | 'no') {
@@ -1995,15 +2029,23 @@ const increasePrice = () => {
   limitPrice.value = ALLOWED_LIMIT_PRICES[nextIdx] ?? limitPrice.value
 }
 
-/** 仅在值为正整数时更新 shares */
+/** 更新 shares：Buy 仅正整数，Sell 支持 6 位小数 */
 function onSharesInput(v: unknown) {
   const num = v == null ? NaN : Number(v)
+  if (!Number.isFinite(num)) return
+  if (activeTab.value === 'sell') {
+    if (num <= 0) return
+    const scaled = clampSellShares(num)
+    if (scaled <= 0) return
+    shares.value = scaled
+    return
+  }
   const n = Math.floor(num)
-  if (!Number.isFinite(num) || n < 1 || num !== n) return
+  if (n < 1 || num !== n) return
   shares.value = n
 }
 
-/** 只允许数字输入（Shares 为正整数） */
+/** 键盘输入：Sell 允许小数点 */
 function onSharesKeydown(e: KeyboardEvent) {
   const key = e.key
   const allowed = ['Backspace', 'Delete', 'Tab', 'ArrowLeft', 'ArrowRight', 'Home', 'End']
@@ -2012,12 +2054,24 @@ function onSharesKeydown(e: KeyboardEvent) {
     if (['a', 'c', 'v', 'x'].includes(key.toLowerCase())) return
   }
   if (key >= '0' && key <= '9') return
+  if (
+    activeTab.value === 'sell' &&
+    key === '.' &&
+    !String((e.target as HTMLInputElement)?.value ?? '').includes('.')
+  ) {
+    return
+  }
   e.preventDefault()
 }
 
-/** 粘贴时只接受正整数 */
+/** 粘贴：Sell 接受小数，Buy 仅正整数 */
 function onSharesPaste(e: ClipboardEvent) {
   const text = e.clipboardData?.getData('text') ?? ''
+  if (activeTab.value === 'sell') {
+    const num = parseFloat(text)
+    if (!Number.isFinite(num) || num <= 0) e.preventDefault()
+    return
+  }
   const num = parseInt(text, 10)
   if (!Number.isFinite(num) || num < 1) e.preventDefault()
 }
@@ -2031,14 +2085,15 @@ const adjustShares = (amount: number) => {
 const sellSharesExceedsMax = computed(
   () =>
     activeTab.value === 'sell' &&
-    maxAvailableShares.value >= 0 &&
+    maxAvailableShares.value > 0 &&
-    shares.value > maxAvailableShares.value,
+    sharesToMicro(shares.value) > sharesToMicro(maxAvailableShares.value),
 )
 
 // 份额百分比调整方法（仅在Sell模式下使用）
 const setSharesPercentage = (percentage: number) => {
-  const maxShares = currentOptionPositionShares.value || 100
+  const maxShares = currentOptionPositionShares.value
-  shares.value = clampShares(Math.round((maxShares * percentage) / 100))
+  if (!Number.isFinite(maxShares) || maxShares <= 0) return
+  shares.value = clampSellShares((maxShares * percentage) / 100)
 }
 
 // Market mode methods
@@ -2160,8 +2215,8 @@ async function submitOrder() {
       isNoAvailableSharesError.value = true
       return
     }
-    if (shares.value > maxShares) {
+    if (sharesToMicro(shares.value) > sharesToMicro(maxShares)) {
-      orderError.value = t('trade.sharesExceedsMax', { max: maxShares })
+      orderError.value = t('trade.sharesExceedsMax', { max: maxAvailableSharesDisplay.value })
       isNoAvailableSharesError.value = false
       return
     }
@@ -2179,8 +2234,23 @@ async function submitOrder() {
       ? parseExpirationTimestamp(expirationTime.value)
       : 0
 
-  const rawSize = isMarket && activeTab.value === 'buy' ? amount.value : clampShares(shares.value)
+  const rawSize =
-  const sizeValue = Math.round(rawSize * 1_000_000)
+    isMarket && activeTab.value === 'buy'
+      ? amount.value
+      : activeTab.value === 'sell'
+        ? clampSellShares(shares.value)
+        : clampShares(shares.value)
+  if (activeTab.value === 'sell' && rawSize <= 0) {
+    orderError.value = t('trade.orderFailed')
+    isNoAvailableSharesError.value = false
+    return
+  }
+  const sizeValue = sharesToMicro(rawSize)
+  if (sizeValue <= 0) {
+    orderError.value = t('trade.orderFailed')
+    isNoAvailableSharesError.value = false
+    return
+  }
 
   orderLoading.value = true
   orderError.value = ''