DNF90 服务端与启动器完整源码（含 GM 工具功能增强）

服务端（Go）：
- GM 塞背包/带属性装备发放：在线角色推送 op14 增量物品行，背包实时刷新，无需回角色选择界面
- GM 改金币/改等级：去掉在线拒绝，落库后推送 op14 钱包/op37 等级状态，在线实时刷新
- 等级端点统一切换到新版 GMSetCharacterLevel（自带在线刷新）
- 无限/锁死疲劳模式 + 燃烧疲劳：每房间消耗 2 点、打怪与通关经验双倍
- 燃烧疲劳开关时给所有在线角色推送系统提示（op12 mode 0）
- 深渊史诗掉率：GM 全局倍率 + 城镇增益药剂窗口倍率，真实接入掉落结算

启动器（Python/JS）：
- 标题栏自绘、窗口 1204x717、禁止拖拽改大小、仅最小化/关闭
- GM 工具：疲劳与燃烧、深渊史诗掉率、拍卖行上架（单一定价对齐）
- 拍卖行上架前端对齐服务端单一价格语义，修复 400 报错

server/internal/modules/dnf/itemlock/snapshot.go

@@ -0,0 +1,103 @@
+package itemlock
+
+import (
+	"sort"
+	"strconv"
+	"strings"
+
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+)
+
+type lockSnapshotEntry struct {
+	listType         byte
+	slotIndex        int16
+	state            byte
+	remainingSeconds int32
+}
+
+// BuildLockListSnapshot serializes the current selected-character lock state
+// in the current client's op251 list format. An empty inventory or one with no
+// locked rows deliberately produces the explicit empty-list sentinel 00 00.
+func BuildLockListSnapshot(record dnfrepo.InventoryRecord) []byte {
+	entries := make([]lockSnapshotEntry, 0)
+	entries = appendLockSnapshotEntries(entries, record.Slots, listTypeMain)
+	entries = appendLockSnapshotEntries(entries, record.Slots, listTypeAvatar)
+	entries = appendLockSnapshotEntries(entries, record.Warehouse, listTypePersonalCargo)
+	entries = appendLockSnapshotEntries(entries, record.Slots, listTypePet)
+	sort.Slice(entries, func(left, right int) bool {
+		if entries[left].listType != entries[right].listType {
+			return entries[left].listType < entries[right].listType
+		}
+		return entries[left].slotIndex < entries[right].slotIndex
+	})
+
+	var writer packetWriter
+	writer.writeUint16(uint16(len(entries)))
+	for _, entry := range entries {
+		writer.writeByte(entry.listType)
+		writer.writeInt16(entry.slotIndex)
+		writer.writeByte(entry.state)
+		if entry.state == itemLockStatePending {
+			writer.writeInt32(entry.remainingSeconds)
+		}
+	}
+	return writer.bytes()
+}
+
+func appendLockSnapshotEntries(entries []lockSnapshotEntry, items map[string]dnfrepo.ItemStack, wantListType byte) []lockSnapshotEntry {
+	for key, stack := range items {
+		listType, slotIndex, ok := parseLockSnapshotSlotKey(key)
+		if !ok || listType != wantListType || stack.ItemID <= 0 || stack.Count <= 0 {
+			continue
+		}
+		state, remainingSeconds, locked := lockSnapshotState(stack)
+		if !locked {
+			continue
+		}
+		entries = append(entries, lockSnapshotEntry{
+			listType:         listType,
+			slotIndex:        slotIndex,
+			state:            state,
+			remainingSeconds: remainingSeconds,
+		})
+	}
+	return entries
+}
+
+func parseLockSnapshotSlotKey(key string) (byte, int16, bool) {
+	listText, slotText, found := strings.Cut(strings.TrimSpace(key), ":")
+	if !found {
+		return 0, 0, false
+	}
+	listValue, err := strconv.ParseUint(strings.TrimSpace(listText), 10, 8)
+	if err != nil {
+		return 0, 0, false
+	}
+	slotValue, err := strconv.ParseInt(strings.TrimSpace(slotText), 10, 16)
+	if err != nil || slotValue < 0 {
+		return 0, 0, false
+	}
+	return byte(listValue), int16(slotValue), true
+}
+
+func lockSnapshotState(stack dnfrepo.ItemStack) (byte, int32, bool) {
+	switch strings.ToLower(strings.TrimSpace(currentLockState(stack))) {
+	case "1", "active", "locked":
+		return itemLockStateActive, 0, true
+	case "2", "unlocking", "pending_unlock":
+		return itemLockStatePending, lockSnapshotRemainingSeconds(stack), true
+	default:
+		return 0, 0, false
+	}
+}
+
+func lockSnapshotRemainingSeconds(stack dnfrepo.ItemStack) int32 {
+	if stack.Extra == nil {
+		return 0
+	}
+	seconds, err := strconv.ParseInt(strings.TrimSpace(stack.Extra["equipment_lock_remaining_seconds"]), 10, 32)
+	if err != nil || seconds < 0 {
+		return 0
+	}
+	return int32(seconds)
+}