diff --git a/terminal/kiosk-shell/src/desktop_store.cpp b/terminal/kiosk-shell/src/desktop_store.cpp
new file mode 100644
index 0000000..824b382
--- /dev/null
+++ b/terminal/kiosk-shell/src/desktop_store.cpp
@@ -0,0 +1,160 @@
+#include "desktop_store.h"
+
+#include <QDir>
+#include <QFile>
+#include <QFileInfo>
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QJsonObject>
+
+#include "config.h"
+
+namespace vdi {
+namespace {
+
+// 三张默认桌面卡：id/name/os 固定，连接参数由现场配置。
+// endpoint 为空 = 待分配，配置地址后即变为可连接。
+std::vector<DesktopInfo> defaultDesktops(const QString& migratedServer) {
+    std::vector<DesktopInfo> list;
+
+    DesktopInfo win;
+    win.id = QStringLiteral("desk-win10-01");
+    win.name = QStringLiteral("Windows 10");
+    win.os = QStringLiteral("Windows 桌面");
+    win.protocol = Protocol::kMoonlight;
+    win.endpoint = migratedServer;  // 兼容老盒子：迁移 client.conf 的 server
+    win.app = QStringLiteral("Desktop");
+    win.width = 1920;
+    win.height = 1080;
+    win.fps = 60;
+    list.push_back(win);
+
+    DesktopInfo ubuntu;
+    ubuntu.id = QStringLiteral("desk-ubuntu-01");
+    ubuntu.name = QStringLiteral("Ubuntu");
+    ubuntu.os = QStringLiteral("Ubuntu 桌面");
+    ubuntu.protocol = Protocol::kRdp;
+    list.push_back(ubuntu);
+
+    DesktopInfo kylin;
+    kylin.id = QStringLiteral("desk-kylin-01");
+    kylin.name = QStringLiteral("麒麟");
+    kylin.os = QStringLiteral("银河麒麟桌面");
+    kylin.protocol = Protocol::kRdp;
+    list.push_back(kylin);
+
+    return list;
+}
+
+DesktopInfo fromJson(const QJsonObject& obj) {
+    DesktopInfo d;
+    d.id = obj.value(QStringLiteral("id")).toString();
+    d.name = obj.value(QStringLiteral("name")).toString();
+    d.os = obj.value(QStringLiteral("os")).toString();
+    d.protocol = obj.value(QStringLiteral("protocol")).toString() == QStringLiteral("rdp")
+                     ? Protocol::kRdp
+                     : Protocol::kMoonlight;
+    d.endpoint = obj.value(QStringLiteral("endpoint")).toString();
+    d.app = obj.value(QStringLiteral("app")).toString();
+    d.width = obj.value(QStringLiteral("width")).toInt(1920);
+    d.height = obj.value(QStringLiteral("height")).toInt(1080);
+    d.fps = obj.value(QStringLiteral("fps")).toInt(60);
+    d.state = d.endpoint.isEmpty() ? DesktopState::kUnassigned : DesktopState::kAvailable;
+    return d;
+}
+
+QJsonObject toJson(const DesktopInfo& d) {
+    QJsonObject obj;
+    obj.insert(QStringLiteral("id"), d.id);
+    obj.insert(QStringLiteral("name"), d.name);
+    obj.insert(QStringLiteral("os"), d.os);
+    obj.insert(QStringLiteral("protocol"),
+               d.protocol == Protocol::kRdp ? QStringLiteral("rdp") : QStringLiteral("moonlight"));
+    obj.insert(QStringLiteral("endpoint"), d.endpoint);
+    obj.insert(QStringLiteral("app"), d.app);
+    obj.insert(QStringLiteral("width"), d.width);
+    obj.insert(QStringLiteral("height"), d.height);
+    obj.insert(QStringLiteral("fps"), d.fps);
+    return obj;
+}
+
+}  // namespace
+
+QString DesktopStore::storePath() {
+    return QString::fromStdString(configDir()) + QStringLiteral("/desktops.json");
+}
+
+std::vector<DesktopInfo> DesktopStore::load() {
+    std::vector<DesktopInfo> result;
+
+    QFile file(storePath());
+    if (file.exists() && file.open(QIODevice::ReadOnly)) {
+        const QJsonDocument doc = QJsonDocument::fromJson(file.readAll());
+        const QJsonArray arr = doc.object().value(QStringLiteral("desktops")).toArray();
+        for (const QJsonValue& v : arr) {
+            DesktopInfo d = fromJson(v.toObject());
+            if (!d.id.isEmpty()) {
+                result.push_back(d);
+            }
+        }
+    }
+
+    // 确保三张默认卡始终存在（新环境骨架 / 防止手工编辑删卡）。
+    // 兼容老盒子：client.conf 里只要配过 server，就迁移为 Windows 桌面地址。
+    const TerminalConfig cfg = loadConfig();
+    const QString migrated = result.empty() && !cfg.server.empty()
+                                 ? QString::fromStdString(cfg.server)
+                                 : QString();
+    const std::vector<DesktopInfo> defaults = defaultDesktops(migrated);
+    for (const DesktopInfo& def : defaults) {
+        bool found = false;
+        for (const DesktopInfo& d : result) {
+            if (d.id == def.id) {
+                found = true;
+                break;
+            }
+        }
+        if (!found) {
+            result.push_back(def);
+        }
+    }
+
+    // 统一按 endpoint 推导状态：有地址=可连接，无地址=待分配
+    for (DesktopInfo& d : result) {
+        d.state = d.endpoint.isEmpty() ? DesktopState::kUnassigned : DesktopState::kAvailable;
+    }
+    return result;
+}
+
+bool DesktopStore::save(const std::vector<DesktopInfo>& desktops) {
+    QJsonArray arr;
+    for (const DesktopInfo& d : desktops) {
+        arr.append(toJson(d));
+    }
+    QJsonObject root;
+    root.insert(QStringLiteral("version"), 1);
+    root.insert(QStringLiteral("desktops"), arr);
+
+    const QString path = storePath();
+    QDir().mkpath(QFileInfo(path).absolutePath());
+    QFile file(path);
+    if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
+        return false;
+    }
+    file.write(QJsonDocument(root).toJson(QJsonDocument::Indented));
+    return true;
+}
+
+bool DesktopStore::update(const DesktopInfo& info) {
+    std::vector<DesktopInfo> list = load();
+    for (DesktopInfo& d : list) {
+        if (d.id == info.id) {
+            d = info;
+            d.state = d.endpoint.isEmpty() ? DesktopState::kUnassigned : DesktopState::kAvailable;
+            return save(list);
+        }
+    }
+    return false;
+}
+
+}  // namespace vdi