优化：限价单按规则只取135个档位

src/components/TradeComponent.vue

@@ -182,6 +182,7 @@
               hide-details
               density="compact"
               @update:model-value="onLimitPriceInput"
+              @blur="onLimitPriceBlur"
               @keydown="onLimitPriceKeydown"
               @paste="onLimitPricePaste"
             ></v-text-field>
@@ -439,6 +440,7 @@
                   hide-details
                   density="compact"
                   @update:model-value="onLimitPriceInput"
+                  @blur="onLimitPriceBlur"
                   @keydown="onLimitPriceKeydown"
                   @paste="onLimitPricePaste"
                 ></v-text-field>
@@ -936,6 +938,42 @@ import { OrderType, Side } from '../api/constants'
 const { mobile } = useDisplay()
 const userStore = useUserStore()
 
+/** 限价单允许的 135 个价格档位（0–1 区间），规则：1–9/10–90/100–9900/9910–9990/9991–9999 */
+function buildAllowedLimitPrices(): number[] {
+  const list: number[] = []
+  for (let i = 1; i <= 9; i++) list.push(i / 10000)
+  for (let i = 10; i <= 90; i += 10) list.push(i / 10000)
+  for (let i = 100; i <= 9900; i += 100) list.push(i / 10000)
+  for (let i = 9910; i <= 9990; i += 10) list.push(i / 10000)
+  for (let i = 9991; i <= 9999; i++) list.push(i / 10000)
+  return list
+}
+const ALLOWED_LIMIT_PRICES = buildAllowedLimitPrices()
+
+/** 将限价吸附到最近的允许档位 */
+function snapToAllowedPrice(v: number): number {
+  const clamped = Math.min(1, Math.max(0, Number.isFinite(v) ? v : 0))
+  const list = ALLOWED_LIMIT_PRICES
+  if (list.length === 0) return clamped
+  let nearest = list[0] as number
+  let minDiff = Math.abs(clamped - nearest)
+  for (const p of list) {
+    const d = Math.abs(clamped - p)
+    if (d < minDiff) {
+      minDiff = d
+      nearest = p
+    }
+  }
+  return nearest
+}
+
+/** 获取当前价格在允许列表中的索引，-1 表示不在列表中 */
+function indexOfAllowedPrice(v: number): number {
+  const snapped = snapToAllowedPrice(v)
+  const idx = ALLOWED_LIMIT_PRICES.findIndex((p) => Math.abs(p - snapped) < 1e-9)
+  return idx >= 0 ? idx : 0
+}
+
 export interface TradeMarketPayload {
   marketId?: string
   yesPrice: number
@@ -1089,8 +1127,9 @@ function applyInitialOption(option: 'yes' | 'no') {
   syncLimitPriceFromMarket()
 }
 
+/** 限价限制到 [0,1] 并吸附到 135 个允许档位之一 */
 function clampLimitPrice(v: number): number {
-  return Math.min(1, Math.max(0, Number.isFinite(v) ? v : 0))
+  return snapToAllowedPrice(Math.min(1, Math.max(0, Number.isFinite(v) ? v : 0)))
 }
 
 /** 根据当前 props.market 与 selectedOption 同步 limitPrice（组件显示或 market 更新时调用） */
@@ -1133,11 +1172,16 @@ const handleOptionChange = (option: 'yes' | 'no') => {
   emit('optionChange', option)
 }
 
-/** 仅在值在 [0,1] 且为有效数字时更新，否则保持原值不变 */
+/** 仅接受 135 个允许档位：输入值吸附到最近档位，非法值忽略 */
 function onLimitPriceInput(v: unknown) {
   const num = v == null ? NaN : Number(v)
   if (!Number.isFinite(num) || num < 0 || num > 1) return
-  limitPrice.value = num
+  limitPrice.value = snapToAllowedPrice(num)
+}
+
+/** 失焦时吸附到允许档位 */
+function onLimitPriceBlur() {
+  limitPrice.value = snapToAllowedPrice(limitPrice.value)
 }
 
 /** 只允许数字和小数点输入 */
@@ -1162,13 +1206,17 @@ function onLimitPricePaste(e: ClipboardEvent) {
   }
 }
 
-// 限价调整方法（0–1 区间）
+// 限价调整方法：在 135 个允许档位间上下切换
 const decreasePrice = () => {
-  limitPrice.value = clampLimitPrice(limitPrice.value - 0.01)
+  const idx = indexOfAllowedPrice(limitPrice.value)
+  const nextIdx = Math.max(0, idx - 1)
+  limitPrice.value = ALLOWED_LIMIT_PRICES[nextIdx] ?? limitPrice.value
 }
 
 const increasePrice = () => {
-  limitPrice.value = clampLimitPrice(limitPrice.value + 0.01)
+  const idx = indexOfAllowedPrice(limitPrice.value)
+  const nextIdx = Math.min(ALLOWED_LIMIT_PRICES.length - 1, idx + 1)
+  limitPrice.value = ALLOWED_LIMIT_PRICES[nextIdx] ?? limitPrice.value
 }
 
 /** 将 shares 限制为正整数（>= 1） */