v1.2.3: Add holdings group option to pin held stocks at top

- New setting: "持仓股单独分组置顶" toggle
- When enabled, stocks with holdings are grouped into a "持仓" section at top
- Remaining non-held stocks still grouped by A/HK/US market as usual
- StockGroupView supports custom title for holdings group

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

StockMonitor/Models/AppSettings.swift

@@ -65,6 +65,7 @@ struct AppSettings {
     var displayCurrency: DisplayCurrency = .cny
     var sortRule: SortRule               = .changeDesc
     var usPriceMode: USPriceMode         = .sessionPrice
+    var groupHoldings: Bool              = false
 
     static let validRefreshIntervals = [3, 5, 10, 30]
 
@@ -75,7 +76,7 @@ struct AppSettings {
 // MARK: - Codable（容错：缺失字段使用默认值）
 extension AppSettings: Codable {
     enum CodingKeys: String, CodingKey {
-        case statusBarStockId, refreshInterval, colorScheme, displayCurrency, sortRule, usPriceMode
+        case statusBarStockId, refreshInterval, colorScheme, displayCurrency, sortRule, usPriceMode, groupHoldings
     }
 
     init(from decoder: Decoder) throws {
@@ -86,5 +87,6 @@ extension AppSettings: Codable {
         displayCurrency  = (try? c.decodeIfPresent(DisplayCurrency.self, forKey: .displayCurrency))   ?? .cny
         sortRule         = (try? c.decodeIfPresent(SortRule.self,         forKey: .sortRule))           ?? .changeDesc
         usPriceMode      = (try? c.decodeIfPresent(USPriceMode.self,     forKey: .usPriceMode))        ?? .sessionPrice
+        groupHoldings    = (try? c.decodeIfPresent(Bool.self,            forKey: .groupHoldings))      ?? false
     }
 }

StockMonitor/Views/DropdownView.swift

@@ -7,22 +7,48 @@ struct DropdownView: View {
     @State private var selectedStock: Stock? = nil
     @State private var lastSelectedStockId: String? = nil
 
-    private var groupedStocks: [(Market, [Stock])] {
-        [Market.aStock, .hkStock, .usStock].compactMap { market in
-            var s = appState.stocks.filter { $0.market == market }
-            if sortByChange {
-                let rule = appState.config.sortRule
-                let usMode = appState.config.usPriceMode
-                s.sort { a, b in
-                    let qa = appState.quotes[a.id]
-                    let qb = appState.quotes[b.id]
-                    let va = sortValue(quote: qa, market: market, mode: usMode)
-                    let vb = sortValue(quote: qb, market: market, mode: usMode)
-                    return rule == .changeDesc ? va > vb : va < vb
-                }
+    /// 分组数据：(market, stocks, customTitle?)
+    private var groupedStocks: [(Market, [Stock], String?)] {
+        let rule = appState.config.sortRule
+        let usMode = appState.config.usPriceMode
+        let doSort = sortByChange
+
+        func sorted(_ stocks: [Stock], market: Market) -> [Stock] {
+            guard doSort else { return stocks }
+            return stocks.sorted { a, b in
+                let va = sortValue(quote: appState.quotes[a.id], market: market, mode: usMode)
+                let vb = sortValue(quote: appState.quotes[b.id], market: market, mode: usMode)
+                return rule == .changeDesc ? va > vb : va < vb
             }
-            return s.isEmpty ? nil : (market, s)
         }
+
+        var result: [(Market, [Stock], String?)] = []
+
+        // 持仓股单独分组
+        if appState.config.groupHoldings {
+            let holdings = appState.stocks.filter { $0.holdingShares != nil }
+            if !holdings.isEmpty {
+                // 持仓组内按第一只股票的市场类型排序（混合市场）
+                let sortedHoldings = doSort ? holdings.sorted { a, b in
+                    let va = sortValue(quote: appState.quotes[a.id], market: a.market, mode: usMode)
+                    let vb = sortValue(quote: appState.quotes[b.id], market: b.market, mode: usMode)
+                    return rule == .changeDesc ? va > vb : va < vb
+                } : holdings
+                result.append((.aStock, sortedHoldings, "持仓"))
+            }
+            let holdingIds = Set(holdings.map(\.id))
+            for market in [Market.aStock, .hkStock, .usStock] {
+                let s = appState.stocks.filter { $0.market == market && !holdingIds.contains($0.id) }
+                if !s.isEmpty { result.append((market, sorted(s, market: market), nil)) }
+            }
+        } else {
+            for market in [Market.aStock, .hkStock, .usStock] {
+                let s = appState.stocks.filter { $0.market == market }
+                if !s.isEmpty { result.append((market, sorted(s, market: market), nil)) }
+            }
+        }
+
+        return result
     }
 
     private func sortValue(quote: Quote?, market: Market, mode: USPriceMode) -> Double {
@@ -53,8 +79,9 @@ struct DropdownView: View {
                     ScrollViewReader { proxy in
                         ScrollView {
                             VStack(alignment: .leading, spacing: 6) {
-                                ForEach(groupedStocks, id: \.0) { market, stocks in
-                                    StockGroupView(market: market, stocks: stocks,
+                                ForEach(Array(groupedStocks.enumerated()), id: \.offset) { _, group in
+                                    StockGroupView(market: group.0, stocks: group.1,
+                                                   title: group.2,
                                                    onSelect: {
                                                        lastSelectedStockId = $0.id
                                                        selectedStock = $0

StockMonitor/Views/SettingsView.swift

@@ -54,6 +54,14 @@ struct SettingsView: View {
                     }.pickerStyle(.menu)
                 }
 
+                // 持仓股分组
+                section("持仓股展示") {
+                    Toggle("持仓股单独分组置顶", isOn: Binding(
+                        get: { appState.config.groupHoldings },
+                        set: { appState.config.groupHoldings = $0 }
+                    ))
+                }
+
                 // 排序规则
                 section("排序规则") {
                     Picker("", selection: Binding(

StockMonitor/Views/StockGroupView.swift

@@ -3,6 +3,7 @@ import SwiftUI
 struct StockGroupView: View {
     let market: Market
     let stocks: [Stock]
+    var title: String? = nil
     var onSelect: ((Stock) -> Void)? = nil
     @EnvironmentObject var appState: AppState
     @State private var isExpanded = true
@@ -15,7 +16,7 @@ struct StockGroupView: View {
                 HStack(spacing: 4) {
                     Image(systemName: isExpanded ? "chevron.down" : "chevron.right")
                         .font(.system(size: 10, weight: .medium))
-                    Text(market.rawValue)
+                    Text(title ?? market.rawValue)
                         .font(.system(size: 11, weight: .semibold))
                     Text("(\(stocks.count))")
                         .font(.system(size: 11))