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/item_upgrade_refund_mail.go

@@ -0,0 +1,98 @@
+package dnfbridge
+
+import (
+	"context"
+	"errors"
+	"math"
+	"time"
+
+	"longheng.io/server/internal/modules/dnf/alignedcmd"
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+)
+
+var (
+	errCurrentUpgradeRefundMailUnavailable = errors.New("current upgrade destroy refund mail unavailable")
+)
+
+// currentUpgradeRefundMailer delivers the destruction refund rows the bag had
+// no room for. Only the disassembly refund this server adds on top of the PVF
+// compensation is routed here (see currentUpgradeDestroyDisjointRewards); the
+// upgrade.etc [disjoint bonus item] compensation keeps its strict behaviour.
+//
+// It cannot share the upgrade's transaction: WithinCharacterAssets covers
+// characters, inventory and equipment, mailboxes have their own unit of work,
+// and the destroyed target may sit on the equipment page. The owner therefore
+// calls this once the upgrade is durable. A failure here is logged and
+// swallowed -- undoing a committed destruction to save a bonus row would be
+// the worse outcome.
+func (s *Service) currentUpgradeRefundMailer() alignedcmd.UpgradeRefundMailer {
+	return func(ctx context.Context, characterID string, rows []alignedcmd.UpgradeDestroyReward) error {
+		if s == nil || characterID == "" || len(rows) == 0 {
+			return nil
+		}
+		repositories, ok := s.repositoryGroup()
+		if !ok || repositories.MailboxAssets == nil {
+			s.logPacketEvent("dnf-upgrade-refund-mail-unavailable",
+				"character_id", characterID, "rows", len(rows))
+			return errCurrentUpgradeRefundMailUnavailable
+		}
+		catalog, err := s.currentPVFItemCatalog()
+		if err != nil {
+			s.logPacketEvent("dnf-upgrade-refund-mail-catalog-unavailable",
+				"character_id", characterID, "rows", len(rows), "error", err)
+			return err
+		}
+		attachments := make([]dnfrepo.MailAttachment, 0, len(rows))
+		for _, row := range rows {
+			if row.ItemID <= 0 || row.ItemID > math.MaxUint32 || row.Count <= 0 {
+				continue
+			}
+			built, buildErr := currentOverflowMailAttachments(
+				catalog, uint32(row.ItemID), int64(row.Count), "upgrade_destroy_refund")
+			if buildErr != nil {
+				// One unresolvable row must not cost the player the others.
+				s.logPacketEvent("dnf-upgrade-refund-mail-row-skipped",
+					"character_id", characterID, "item_id", row.ItemID,
+					"count", row.Count, "error", buildErr)
+				continue
+			}
+			attachments = append(attachments, built...)
+		}
+		if len(attachments) == 0 {
+			return errCurrentUpgradeRefundMailUnavailable
+		}
+		now := time.Now().UTC()
+		mailID := ""
+		err = repositories.MailboxAssets.WithinMailboxAssets(ctx, characterID, characterID, func(
+			_ dnfrepo.AccountRepository,
+			_ dnfrepo.AccountInventoryRepository,
+			_ dnfrepo.CharacterRepository,
+			_ dnfrepo.InventoryRepository,
+			mailboxes dnfrepo.MailboxRepository,
+		) error {
+			id, mailErr := dnfrepo.AppendSystemMail(ctx, mailboxes, dnfrepo.SystemMailDelivery{
+				RecipientCharacterID: characterID,
+				Title:                "背包已满：装备损坏返还",
+				Body:                 "强化/增幅失败导致装备损坏，背包空间不足未能放入的返还物品已通过邮件发送。请清理对应道具分页后领取。",
+				Source:               "upgrade_destroy_refund_inventory_full",
+				Attachments:          attachments,
+				CreatedAt:            now,
+			})
+			if mailErr != nil {
+				return mailErr
+			}
+			mailID = id
+			return nil
+		})
+		if err != nil {
+			s.logPacketEvent("dnf-upgrade-refund-mail-failed",
+				"character_id", characterID, "rows", len(rows),
+				"attachments", len(attachments), "error", err)
+			return err
+		}
+		s.logPacketEvent("dnf-upgrade-refund-mailed",
+			"character_id", characterID, "mail_id", mailID,
+			"rows", len(rows), "attachments", len(attachments))
+		return nil
+	}
+}