优化：下单锁单优化

docs/components/TradeComponent.md

@@ -43,6 +43,7 @@ interface TradePositionItem {
   - 25%/50%/Max 按钮独立一行（`sell-shares-buttons`）
   - 整体布局更清晰：`Shares          Max: 2` → `[输入框]` → `[25%][50%][Max]`
 - 调用 market API 下单、Split、Merge
+- **submitOrder size 统一乘 1_000_000**：无论 Market Buy（amount）、Market Sell、Limit Buy、Limit Sell（shares），传入 `pmOrderPlace` 的 `size` 均先取原始值再 `Math.round(rawSize * 1_000_000)`
 - **合并/拆分成功后触发事件**：`mergeSuccess`、`splitSuccess`，父组件监听后可刷新持仓列表
 - **401 权限错误提示**：通过 `useAuthError().formatAuthError` 统一处理，未登录显示「请先登录」，已登录显示「权限不足」
 

src/api/position.ts

@@ -21,6 +21,8 @@ export interface ClobPositionItem {
   size?: string
   /** 可用份额，字符串，6 位小数 */
   available?: string
+  /** 锁单数量，字符串，6 位小数；>0 表示锁单中不可卖出 */
+  lock?: string
   /** 成本，字符串，6 位小数 */
   cost?: string
   /** 方向：Yes | No */
@@ -97,6 +99,12 @@ export interface PositionDisplayItem {
   iconClass?: string
   outcomeTag?: string
   outcomePillClass?: string
+  /** 是否锁单（lock > 0），锁单不可卖出 */
+  locked?: boolean
+  /** 锁单数量（来自 lock 字段），用于展示「锁单 X shares」 */
+  lockedSharesNum?: number
+  /** 可卖份额数值（来自 available），available > 0 表示有订单可卖，此为最大可卖份额 */
+  availableSharesNum?: number
 }
 
 /**
@@ -107,8 +115,11 @@ export function mapPositionToDisplayItem(pos: ClobPositionItem): PositionDisplay
   const id = String(pos.ID ?? '')
   const market = pos.marketID ?? ''
   const sizeRaw = parsePosNum(pos.size ?? pos.available)
+  const availableRaw = parsePosNum(pos.available)
   const costRaw = parsePosNum(pos.cost)
+  const lockRaw = parsePosNum(pos.lock)
   const size = sizeRaw / SCALE
+  const availableNum = availableRaw / SCALE
   const costUsd = costRaw / SCALE
   const shares = `${size} shares`
   const outcomeWord = pos.outcome === 'No' ? 'No' : 'Yes'
@@ -117,6 +128,8 @@ export function mapPositionToDisplayItem(pos: ClobPositionItem): PositionDisplay
   const bet = value
   const toWin = `$${size.toFixed(2)}`
   const outcomeTag = `${outcomeWord} —`
+  const locked = lockRaw > 0
+  const lockedSharesNum = lockRaw > 0 ? lockRaw / SCALE : undefined
   return {
     id,
     market,
@@ -129,5 +142,8 @@ export function mapPositionToDisplayItem(pos: ClobPositionItem): PositionDisplay
     outcomeWord,
     outcomeTag,
     outcomePillClass: pillClass,
+    locked,
+    lockedSharesNum,
+    availableSharesNum: availableNum >= 0 ? availableNum : undefined,
   }
 }

src/components/TradeComponent.vue

@@ -382,6 +382,7 @@
           <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
           <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 }) }}</p>
         <div v-if="activeTab === 'buy'" class="matching-info">
           <v-icon size="14">mdi-information</v-icon>
           <span>20.00 matching</span>
@@ -1467,6 +1468,10 @@ export interface TradeMarketPayload {
   clobTokenIds?: string[]
   /** 选项展示文案，如 ["Yes","No"] 或 ["Up","Down"]，用于 Buy Yes/No 按钮文字 */
   outcomes?: string[]
+  /** 订单簿 Yes 买单最高价（美分），市价卖出时用于计算将收到金额 */
+  bestBidYesCents?: number
+  /** 订单簿 No 买单最高价（美分），市价卖出时用于计算将收到金额 */
+  bestBidNoCents?: number
 }
 
 /** 持仓展示项（由父组件传入，用于计算可合并份额） */
@@ -1478,6 +1483,8 @@ export interface TradePositionItem {
   shares: string
   /** 份数数值（纯数字） */
   sharesNum?: number
+  /** 是否锁单，锁单不可卖出 */
+  locked?: boolean
 }
 
 const props = withDefaults(
@@ -1597,9 +1604,36 @@ function openSheet(option: 'yes' | 'no') {
   sheetOpen.value = true
 }
 
-// State
+// 持久化：记住用户上次的买入/卖出、市价/限价选择
-const activeTab = ref('buy')
+const TRADE_PREFS_KEY = 'poly-trade-prefs'
-const limitType = ref('Limit')
+function loadTradePrefs(): { activeTab: 'buy' | 'sell'; limitType: 'Market' | 'Limit' } {
+  try {
+    const raw = localStorage.getItem(TRADE_PREFS_KEY)
+    if (!raw) return { activeTab: 'buy', limitType: 'Limit' }
+    const data = JSON.parse(raw) as { activeTab?: string; limitType?: string }
+    return {
+      activeTab: data.activeTab === 'sell' ? 'sell' : 'buy',
+      limitType: data.limitType === 'Market' ? 'Market' : 'Limit',
+    }
+  } catch {
+    return { activeTab: 'buy', limitType: 'Limit' }
+  }
+}
+function saveTradePrefs() {
+  try {
+    localStorage.setItem(
+      TRADE_PREFS_KEY,
+      JSON.stringify({ activeTab: activeTab.value, limitType: limitType.value }),
+    )
+  } catch {
+    //
+  }
+}
+
+// State（初始值从持久化读取，后续由 props.initialTab 或用户操作覆盖）
+const prefs = loadTradePrefs()
+const activeTab = ref<'buy' | 'sell'>(prefs.activeTab)
+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
@@ -1622,6 +1656,8 @@ const balance = computed(() => {
 
 const orderLoading = ref(false)
 const orderError = ref('')
+/** 当前 orderError 是否为「无可用份额可卖」（用于仅清除该提示而不清除其他错误） */
+const isNoAvailableSharesError = ref(false)
 
 // Emits
 const emit = defineEmits<{
@@ -1650,6 +1686,14 @@ const currentPrice = computed(() => {
 })
 
 const totalPrice = computed(() => {
+  if (activeTab.value === 'sell' && limitType.value === 'Market') {
+    const bestBidCents =
+      selectedOption.value === 'yes'
+        ? (props.market?.bestBidYesCents ?? 0)
+        : (props.market?.bestBidNoCents ?? 0)
+    const price = bestBidCents / 100
+    return (price * shares.value).toFixed(2)
+  }
   return (limitPrice.value * shares.value).toFixed(2)
 })
 
@@ -1681,6 +1725,29 @@ const actionButtonText = computed(() => {
   return tab === 'buy' ? t('trade.buyLabel', { label }) : t('trade.sellLabel', { label })
 })
 
+/** 计算当前选中选项的持仓份额 */
+const currentOptionPositionShares = computed(() => {
+  const positions = props.positions ?? []
+  const currentOutcome = selectedOption.value === 'yes' ? 'Yes' : 'No'
+  let totalShares = 0
+
+  for (const pos of positions) {
+    if (pos.outcomeWord === currentOutcome) {
+      const num = pos.sharesNum ?? parseFloat(pos.shares?.replace(/[^0-9.]/g, ''))
+      if (Number.isFinite(num) && num > 0) {
+        totalShares += num
+      }
+    }
+  }
+
+  return totalShares
+})
+
+/** 最大可卖出份额 */
+const maxAvailableShares = computed(() => {
+  return Math.floor(currentOptionPositionShares.value)
+})
+
 function applyInitialOption(option: 'yes' | 'no') {
   selectedOption.value = option
   syncLimitPriceFromMarket()
@@ -1722,6 +1789,7 @@ watch(
   (m) => {
     if (m) {
       orderError.value = ''
+      isNoAvailableSharesError.value = false
       if (props.initialOption) applyInitialOption(props.initialOption)
       else syncLimitPriceFromMarket()
     }
@@ -1735,8 +1803,26 @@ watch(
     if (newTab === 'sell') {
       setMaxShares()
     }
+    saveTradePrefs()
   },
 )
+/** 卖出时无可卖份额（available 为 0）则显示不可卖提示 */
+watch(
+  () => [activeTab.value, maxAvailableShares.value] as const,
+  ([tab, max]) => {
+    if (tab === 'sell' && (!Number.isFinite(max) || max <= 0)) {
+      orderError.value = t('activity.noAvailableSharesToSell')
+      isNoAvailableSharesError.value = true
+    } else if (tab !== 'sell' || (Number.isFinite(max) && max > 0)) {
+      if (isNoAvailableSharesError.value) {
+        orderError.value = ''
+        isNoAvailableSharesError.value = false
+      }
+    }
+  },
+  { immediate: true },
+)
+watch(limitType, () => saveTradePrefs(), { flush: 'post' })
 
 // Methods
 const handleOptionChange = (option: 'yes' | 'no') => {
@@ -1837,28 +1923,10 @@ const adjustShares = (amount: number) => {
   shares.value = clampShares(shares.value + amount)
 }
 
-/** 计算当前选中选项的持仓份额 */
+/** 卖出时输入份额是否超过最大可卖 */
-const currentOptionPositionShares = computed(() => {
+const sellSharesExceedsMax = computed(
-  const positions = props.positions ?? []
+  () => activeTab.value === 'sell' && maxAvailableShares.value >= 0 && shares.value > maxAvailableShares.value,
-  const currentOutcome = selectedOption.value === 'yes' ? 'Yes' : 'No'
+)
-  let totalShares = 0
-  
-  for (const pos of positions) {
-    if (pos.outcomeWord === currentOutcome) {
-      const num = pos.sharesNum ?? parseFloat(pos.shares?.replace(/[^0-9.]/g, ''))
-      if (Number.isFinite(num) && num > 0) {
-        totalShares += num
-      }
-    }
-  }
-  
-  return totalShares
-})
-
-/** 最大可卖出份额 */
-const maxAvailableShares = computed(() => {
-  return Math.floor(currentOptionPositionShares.value)
-})
 
 // 份额百分比调整方法（仅在Sell模式下使用）
 const setSharesPercentage = (percentage: number) => {
@@ -1969,11 +2037,13 @@ async function submitOrder() {
 
   if (!tokenId) {
     orderError.value = t('trade.pleaseSelectMarket')
+    isNoAvailableSharesError.value = false
     return
   }
   const headers = userStore.getAuthHeaders()
   if (!headers) {
     orderError.value = t('trade.pleaseLogin')
+    isNoAvailableSharesError.value = false
     return
   }
   const uid = userStore?.user?.ID ?? 0
@@ -1985,9 +2055,24 @@ async function submitOrder() {
         : 0
   if (!Number.isFinite(userIdNum) || userIdNum <= 0) {
     orderError.value = t('trade.userError')
+    isNoAvailableSharesError.value = false
     return
   }
 
+  if (activeTab.value === 'sell') {
+    const maxShares = maxAvailableShares.value
+    if (!Number.isFinite(maxShares) || maxShares <= 0) {
+      orderError.value = t('activity.noAvailableSharesToSell')
+      isNoAvailableSharesError.value = true
+      return
+    }
+    if (shares.value > maxShares) {
+      orderError.value = t('trade.sharesExceedsMax', { max: maxShares })
+      isNoAvailableSharesError.value = false
+      return
+    }
+  }
+
   const isMarket = limitType.value === 'Market'
   const orderTypeNum = isMarket
     ? OrderType.Market
@@ -2000,12 +2085,14 @@ async function submitOrder() {
       ? parseExpirationTimestamp(expirationTime.value)
       : 0
 
-  const sizeValue = isMarket && activeTab.value === 'buy'
+  const rawSize = isMarket && activeTab.value === 'buy'
-    ? Math.round(amount.value * 1_000_000)
+    ? amount.value
     : clampShares(shares.value)
+  const sizeValue = Math.round(rawSize * 1_000_000)
 
   orderLoading.value = true
   orderError.value = ''
+  isNoAvailableSharesError.value = false
   try {
     const res = await pmOrderPlace(
       {
@@ -2682,6 +2769,12 @@ async function submitOrder() {
   margin: 8px 0 0;
 }
 
+.shares-exceeds-max-hint {
+  font-size: 12px;
+  color: #b45309;
+  margin: 6px 0 0;
+}
+
 .merge-dialog-actions {
   padding: 16px 20px 20px;
   padding-top: 8px;

src/locales/en.json

@@ -59,6 +59,7 @@
     "max": "Max",
     "balanceLabel": "Balance",
     "maxShares": "Max shares",
+    "sharesExceedsMax": "Shares cannot exceed maximum available ({max})",
     "pleaseLogin": "Please log in first",
     "pleaseSelectMarket": "Please select a market (with clobTokenIds)",
     "userError": "User info error",
@@ -102,6 +103,10 @@
     "openOrders": "Orders",
     "noPositionsInMarket": "No positions in this market.",
     "noOpenOrdersInMarket": "No open orders in this market.",
+    "positionLocked": "Locked",
+    "positionLockedWithAmount": "Locked {n} shares",
+    "positionLockedCannotSell": "This position is locked and cannot be sold.",
+    "noAvailableSharesToSell": "No shares available to sell.",
     "cancelOrder": "Cancel",
     "noCommentsYet": "No comments yet.",
     "topHoldersPlaceholder": "Top holders will appear here.",

src/locales/ja.json

@@ -59,6 +59,7 @@
     "max": "最大",
     "balanceLabel": "残高",
     "maxShares": "最大シェア",
+    "sharesExceedsMax": "入力したシェアは最大売却可能数（最大 {max}）を超えられません",
     "pleaseLogin": "先にログインしてください",
     "pleaseSelectMarket": "市場を選択してください（clobTokenIds が必要）",
     "userError": "ユーザー情報エラー",
@@ -102,6 +103,10 @@
     "openOrders": "注文",
     "noPositionsInMarket": "この市場にポジションはありません",
     "noOpenOrdersInMarket": "この市場に未約定注文はありません",
+    "positionLocked": "ロック",
+    "positionLockedWithAmount": "ロック {n} シェア",
+    "positionLockedCannotSell": "このポジションはロック中で売却できません",
+    "noAvailableSharesToSell": "売却可能なシェアがありません",
     "cancelOrder": "キャンセル",
     "noCommentsYet": "コメントはまだありません",
     "topHoldersPlaceholder": "持倉トップがここに表示されます",

src/locales/ko.json

@@ -59,6 +59,7 @@
     "max": "최대",
     "balanceLabel": "잔액",
     "maxShares": "최대 주식",
+    "sharesExceedsMax": "입력한 수량은 최대 매도 가능 수량({max})을 초과할 수 없습니다",
     "pleaseLogin": "먼저 로그인하세요",
     "pleaseSelectMarket": "시장을 선택하세요 (clobTokenIds 필요)",
     "userError": "사용자 정보 오류",
@@ -102,6 +103,10 @@
     "openOrders": "주문",
     "noPositionsInMarket": "이 시장에 포지션이 없습니다",
     "noOpenOrdersInMarket": "이 시장에 미체결 주문이 없습니다",
+    "positionLocked": "잠금",
+    "positionLockedWithAmount": "잠금 {n} 수량",
+    "positionLockedCannotSell": "이 포지션은 잠금 상태로 매도할 수 없습니다",
+    "noAvailableSharesToSell": "매도 가능한 수량이 없습니다",
     "cancelOrder": "취소",
     "noCommentsYet": "아직 댓글이 없습니다",
     "topHoldersPlaceholder": "보유자 순위가 여기에 표시됩니다",

src/locales/zh-CN.json

@@ -59,6 +59,7 @@
     "max": "最大",
     "balanceLabel": "余额",
     "maxShares": "最大份额",
+    "sharesExceedsMax": "输入份额不能大于最大可卖份额（最大 {max}）",
     "pleaseLogin": "请先登录",
     "pleaseSelectMarket": "请先选择市场（需包含 clobTokenIds）",
     "userError": "用户信息异常",
@@ -102,6 +103,10 @@
     "openOrders": "限价",
     "noPositionsInMarket": "本市场暂无持仓",
     "noOpenOrdersInMarket": "本市场暂无未成交订单",
+    "positionLocked": "锁单",
+    "positionLockedWithAmount": "锁单 {n} 份",
+    "positionLockedCannotSell": "该持仓为锁单状态，不可卖出",
+    "noAvailableSharesToSell": "当前无可卖份额",
     "cancelOrder": "撤单",
     "noCommentsYet": "暂无评论",
     "topHoldersPlaceholder": "持仓大户将在此显示",

src/locales/zh-TW.json

@@ -59,6 +59,7 @@
         "max": "最大",
         "balanceLabel": "餘額",
         "maxShares": "最大份額",
+        "sharesExceedsMax": "輸入份額不能大於最大可賣份額（最大 {max}）",
         "pleaseLogin": "請先登入",
         "pleaseSelectMarket": "請先選擇市場（需包含 clobTokenIds）",
         "userError": "用戶資訊異常",
@@ -102,6 +103,10 @@
         "openOrders": "限價",
         "noPositionsInMarket": "本市場暫無持倉",
         "noOpenOrdersInMarket": "本市場暫無未成交訂單",
+        "positionLocked": "鎖單",
+        "positionLockedWithAmount": "鎖單 {n} 份",
+        "positionLockedCannotSell": "該持倉為鎖單狀態，不可賣出",
+        "noAvailableSharesToSell": "目前無可賣份額",
         "cancelOrder": "撤單",
         "noCommentsYet": "暫無評論",
         "topHoldersPlaceholder": "持倉大戶將在此顯示",

src/views/TradeDetail.vue

@@ -64,6 +64,9 @@
                 >
                   <div class="position-row-main">
                     <span :class="['position-outcome-pill', pos.outcomePillClass]">{{ pos.outcomeTag }}</span>
+                    <span v-if="pos.locked" class="position-lock-badge">
+                      {{ pos.lockedSharesNum != null && Number.isFinite(pos.lockedSharesNum) ? t('activity.positionLockedWithAmount', { n: pos.lockedSharesNum }) : t('activity.positionLocked') }}
+                    </span>
                     <span class="position-shares">{{ pos.shares }}</span>
                     <span class="position-value">{{ pos.value }}</span>
                     <v-btn
@@ -71,6 +74,7 @@
                       size="small"
                       color="primary"
                       class="position-sell-btn"
+                      :disabled="!(pos.availableSharesNum != null && pos.availableSharesNum > 0)"
                       @click="openSellFromPosition(pos)"
                     >
                       {{ t('trade.sell') }}
@@ -535,6 +539,18 @@ const orderBookLowestAskNoCents = computed(() => {
   if (!asks.length) return 0
   return Math.min(...asks.map((a) => a.price))
 })
+/** 订单簿 Yes 买单最高价（分），无数据时为 0；市价卖出时用于计算将收到金额 */
+const orderBookBestBidYesCents = computed(() => {
+  const bids = orderBookBidsYes.value
+  if (!bids.length) return 0
+  return Math.max(...bids.map((b) => b.price))
+})
+/** 订单簿 No 买单最高价（分），无数据时为 0；市价卖出时用于计算将收到金额 */
+const orderBookBestBidNoCents = computed(() => {
+  const bids = orderBookBidsNo.value
+  if (!bids.length) return 0
+  return Math.max(...bids.map((b) => b.price))
+})
 const clobLastPriceYes = computed(() => clobLastPriceByToken.value[0])
 const clobLastPriceNo = computed(() => clobLastPriceByToken.value[1])
 const clobSpreadYes = computed(() => clobSpreadByToken.value[0])
@@ -680,6 +696,8 @@ const tradeMarketPayload = computed(() => {
   const m = currentMarket.value
   const yesPrice = orderBookLowestAskYesCents.value / 100
   const noPrice = orderBookLowestAskNoCents.value / 100
+  const bestBidYesCents = orderBookBestBidYesCents.value
+  const bestBidNoCents = orderBookBestBidNoCents.value
   if (m) {
     return {
       marketId: getMarketId(m),
@@ -688,6 +706,8 @@ const tradeMarketPayload = computed(() => {
       title: m.question,
       clobTokenIds: m.clobTokenIds,
       outcomes: m.outcomes,
+      bestBidYesCents,
+      bestBidNoCents,
     }
   }
   const qId = route.query.marketId
@@ -697,6 +717,8 @@ const tradeMarketPayload = computed(() => {
       yesPrice,
       noPrice,
       title: (route.query.title as string) || undefined,
+      bestBidYesCents,
+      bestBidNoCents,
     }
   }
   return undefined
@@ -775,8 +797,12 @@ function onSplitSuccess() {
   loadMarketPositions()
 }
 
-/** 从持仓项点击 Sell：弹出交易组件并切到 Sell、对应 Yes/No。移动端直接开底部弹窗，桌面端开 Dialog */
+/** 从持仓项点击 Sell：弹出交易组件并切到 Sell、对应 Yes/No。是否可卖由 available 判断，available > 0 才可卖。 */
 function openSellFromPosition(pos: PositionDisplayItem) {
+  if (pos.availableSharesNum == null || pos.availableSharesNum <= 0) {
+    toastStore.show(t('activity.noAvailableSharesToSell'), 'warning')
+    return
+  }
   const option = pos.outcomeWord === 'No' ? 'no' : 'yes'
   if (isMobile.value) {
     tradeInitialOptionFromBar.value = option
@@ -808,13 +834,17 @@ const marketPositionsFiltered = computed(() =>
   }),
 )
 
-/** 转为 TradeComponent 所需的 TradePositionItem[]，保证 outcomeWord 为 'Yes' | 'No'（仅含份额>0） */
+/** 转为 TradeComponent 所需的 TradePositionItem[]；sharesNum 用 available（最大可卖份额），available > 0 表示有订单可卖 */
 const tradePositionsForComponent = computed<TradePositionItem[]>(() =>
   marketPositionsFiltered.value.map((p) => ({
     id: p.id,
     outcomeWord: (p.outcomeWord === 'No' ? 'No' : 'Yes') as 'Yes' | 'No',
     shares: p.shares,
-    sharesNum: parseFloat(p.shares?.replace(/[^0-9.]/g, '')) || undefined,
+    sharesNum:
+      p.availableSharesNum != null && Number.isFinite(p.availableSharesNum)
+        ? p.availableSharesNum
+        : parseFloat(p.shares?.replace(/[^0-9.]/g, '')) || undefined,
+    locked: p.locked,
   }))
 )
 
@@ -1867,6 +1897,15 @@ onUnmounted(() => {
   margin-left: auto;
 }
 
+.position-lock-badge {
+  font-size: 11px;
+  color: #b45309;
+  background: #fef3c7;
+  padding: 2px 6px;
+  border-radius: 4px;
+  font-weight: 500;
+}
+
 .position-outcome-pill,
 .order-side-pill {
   font-size: 12px;