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/inventory/owner_upgrade_equipped.go

@@ -0,0 +1,20 @@
+package inventory
+
+import (
+	"errors"
+
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+)
+
+// ErrUpgradeEquipmentOwnerUnavailable is returned when an op50 request names a
+// worn equipment slot (mode word high byte 3) but the owner has no equipment
+// repository in scope. Both upgrade transaction wrappers provide one, so this
+// only fires for a directly constructed owner.
+var ErrUpgradeEquipmentOwnerUnavailable = errors.New("equipment owner unavailable for worn-slot upgrade target")
+
+// equippedUpgradeLevel reads the packed upgrade level of a worn entry through
+// the same projection the owners use, so the handler's pre-transaction PVF
+// policy lookup sees the level the transaction will act on.
+func equippedUpgradeLevel(entry dnfrepo.EquipmentEntry) byte {
+	return upgradeLevelOf(forgingStackFromEquipmentEntry(entry))
+}