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/services/dnfbridge/town_prev_village_door.go

@@ -0,0 +1,35 @@
+package dnfbridge
+
+// currentTownPrevVillageDoorOrigin projects a Seria-room exit origin onto the
+// PVF door of the town it returns to. The exit request (op1425, or op36 back
+// into 38) carries no destination; without this the character lands on the
+// coordinates it had before entering the room. Those are the entry-trigger
+// rectangle itself when the room was entered on foot, which re-arms the
+// client's overlap latch and walks the character straight back in, or an
+// unrelated pre-login area when the room was entered from character select.
+//
+// The projection keeps the town and character identity of origin and replaces
+// area and position with the map-derived landing point next to the portal.
+// Towns whose maps declare no Seria portal (or one that fails wire bounds)
+// leave the origin untouched, so nothing regresses where the catalog is silent.
+func (s *Service) currentTownPrevVillageDoorOrigin(
+	origin currentTownPositionSnapshot,
+) (currentTownPositionSnapshot, string, bool) {
+	if s == nil || origin.CharacterID == 0 || !origin.PositionValid {
+		return origin, "", false
+	}
+	area, found := s.townSeriaRoomReturnArea(int64(origin.TownID))
+	if !found || area.SeriaRoomReturn == nil ||
+		area.ID < 0 || area.ID > int64(^byte(0)) ||
+		area.SeriaRoomReturn.X < 0 || area.SeriaRoomReturn.X > int64(^uint16(0)) ||
+		area.SeriaRoomReturn.Y < 0 || area.SeriaRoomReturn.Y > int64(^uint16(0)) {
+		return origin, "", false
+	}
+	projected := origin
+	projected.AreaID = byte(area.ID)
+	projected.PositionX = uint16(area.SeriaRoomReturn.X)
+	projected.PositionY = uint16(area.SeriaRoomReturn.Y)
+	projected.MovementCode = newCharacterInitialDirection
+	projected.PositionValid = true
+	return projected, area.MapPath, true
+}