fix: refine home filters and stock action chart

frontend/src/composables/useDashboardData.ts

@@ -59,16 +59,59 @@ export function useDashboardData() {
       .filter((item): item is string => Boolean(item))
   })
 
+  function inferActionSide(buyAmount: number, sellAmount: number, netAmount: number): ActionItem['action_side'] {
+    if (buyAmount > 0 && sellAmount <= 0) return 'buy'
+    if (sellAmount > 0 && buyAmount <= 0) return 'sell'
+    if (netAmount >= 0) return 'net_buy'
+    return 'net_sell'
+  }
+
+  function matchesActionFilter(item: ActionItem): boolean {
+    const buyAmount = numberFromText(item.buy_amount_wan) ?? 0
+    const sellAmount = numberFromText(item.sell_amount_wan) ?? 0
+    const netAmount = numberFromText(item.net_amount_wan) ?? buyAmount - sellAmount
+
+    if (selectedActionFilter.value === 'buy') return buyAmount > 0
+    if (selectedActionFilter.value === 'sell') return sellAmount > 0
+    if (selectedActionFilter.value === 'net_buy') return netAmount > 0
+    if (selectedActionFilter.value === 'net_sell') return netAmount < 0
+    return true
+  }
+
+  function aggregateCandidateActions(rows: ActionItem[]): ActionItem[] {
+    const groups = new Map<string, ActionItem>()
+
+    for (const item of rows) {
+      const existing = groups.get(item.stock_code)
+      if (!existing) {
+        groups.set(item.stock_code, { ...item })
+        continue
+      }
+
+      const nextBuy = (numberFromText(existing.buy_amount_wan) ?? 0) + (numberFromText(item.buy_amount_wan) ?? 0)
+      const nextSell = (numberFromText(existing.sell_amount_wan) ?? 0) + (numberFromText(item.sell_amount_wan) ?? 0)
+      const nextNet = nextBuy - nextSell
+      const traderNames = new Set([existing.trader_name, item.trader_name].filter(Boolean))
+      const tableTitles = new Set([existing.table_title, item.table_title].filter(Boolean))
+      const seatNames = new Set([existing.seat_name, item.seat_name].filter(Boolean))
+
+      groups.set(item.stock_code, {
+        ...existing,
+        trader_name: [...traderNames].join(' / '),
+        table_title: [...tableTitles].join(' / '),
+        seat_name: seatNames.size > 1 ? `${seatNames.size}个席位` : existing.seat_name,
+        buy_amount_wan: nextBuy.toFixed(2),
+        sell_amount_wan: nextSell.toFixed(2),
+        net_amount_wan: nextNet.toFixed(2),
+        action_side: inferActionSide(nextBuy, nextSell, nextNet),
+      })
+    }
+
+    return [...groups.values()]
+  }
+
   const filteredActions = computed(() => {
-    return actions.value.filter((item) => {
-      if (selectedTraderFilter.value !== 'all' && item.trader_name !== selectedTraderFilter.value) {
-        return false
-      }
-      if (selectedActionFilter.value !== 'all' && item.action_side !== selectedActionFilter.value) {
-        return false
-      }
-      return true
-    })
+    return actions.value.filter(matchesActionFilter)
   })
 
   const watchlistMap = computed(() => {
@@ -80,14 +123,8 @@ export function useDashboardData() {
   })
 
   const candidateActionRows = computed(() => {
-    const unique = new Map<string, ActionItem>()
-    for (const item of filteredActions.value) {
-      if (watchlistMap.value.has(item.stock_code)) continue
-      if (!unique.has(item.stock_code)) {
-        unique.set(item.stock_code, item)
-      }
-    }
-    return [...unique.values()]
+    const rows = actions.value.filter((item) => !watchlistMap.value.has(item.stock_code))
+    return aggregateCandidateActions(rows).filter(matchesActionFilter)
   })
 
   const watchlistMetrics = computed(() => {