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/joust/settlement.go

@@ -0,0 +1,133 @@
+package joust
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"strconv"
+	"strings"
+	"time"
+
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+)
+
+// SettlementMailDelivery creates the durable reward mail inside the same
+// mailbox-assets transaction that clears the betting claim.
+type SettlementMailDelivery func(dnfrepo.MailboxRepository, int64, uint32) (string, error)
+
+type SettlementCommand struct {
+	AccountID           string
+	SelectedCharacterID uint16
+	Round               uint16
+	Winner              byte
+	Multiplier          float32
+	SettledAt           time.Time
+	DeliverReward       SettlementMailDelivery
+}
+
+type SettlementResult struct {
+	CharacterID  string
+	Round        uint16
+	Knight       byte
+	Amount       uint32
+	Winner       byte
+	Payout       uint32
+	RewardItemID int64
+	MailID       string
+	Won          bool
+	Settled      bool
+}
+
+// Settle clears one pending claim and writes the winning material payout as a
+// system-mail attachment in the same mailbox-assets transaction. A failed
+// delivery rolls back the pending flag, so reconnect/restart retries cannot
+// lose or duplicate the result.
+func (o *Owner) Settle(ctx context.Context, cmd SettlementCommand) (SettlementResult, error) {
+	if o == nil || o.mailboxAssets == nil {
+		return SettlementResult{}, ErrOwnerUnavailable
+	}
+	if cmd.SelectedCharacterID == 0 || cmd.Multiplier <= 0 ||
+		math.IsNaN(float64(cmd.Multiplier)) || math.IsInf(float64(cmd.Multiplier), 0) ||
+		cmd.DeliverReward == nil {
+		return SettlementResult{}, ErrSettlementInvalid
+	}
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	characterID := strconv.FormatUint(uint64(cmd.SelectedCharacterID), 10)
+	accountID := strings.TrimSpace(cmd.AccountID)
+	result := SettlementResult{CharacterID: characterID, Round: cmd.Round, Winner: cmd.Winner}
+	err := o.mailboxAssets.WithinMailboxAssets(ctx, characterID, characterID, func(
+		_ dnfrepo.AccountRepository,
+		_ dnfrepo.AccountInventoryRepository,
+		characters dnfrepo.CharacterRepository,
+		_ dnfrepo.InventoryRepository,
+		mailboxes dnfrepo.MailboxRepository,
+	) error {
+		character, found, err := characters.Load(ctx, characterID)
+		if err != nil {
+			return err
+		}
+		if !found || strings.TrimSpace(character.CharacterID) != characterID {
+			return fmt.Errorf("%w: character=%s", ErrCharacterNotFound, characterID)
+		}
+		if accountID != "" && strings.TrimSpace(character.AccountID) != accountID {
+			return fmt.Errorf("%w: character=%s", ErrAccountMismatch, characterID)
+		}
+		character = dnfrepo.CloneCharacter(character)
+		if character.Stats == nil || character.Stats[PendingStat] == 0 {
+			return nil
+		}
+		round := character.Stats[RoundStat]
+		bets, totalAmount, valid := CurrentRoundBets(character.Stats, cmd.Round)
+		if round != int64(cmd.Round) || !valid {
+			return ErrSettlementInvalid
+		}
+		rewardItemID, valid := CurrentRoundSourceItem(character.Stats, cmd.Round)
+		if !valid {
+			return ErrSettlementInvalid
+		}
+		winningAmount := bets[cmd.Winner]
+		result.Knight = cmd.Winner
+		result.Amount = totalAmount
+		result.Won = winningAmount > 0
+		if result.Won {
+			payout := math.Floor(float64(winningAmount) * float64(cmd.Multiplier))
+			if payout < 1 || payout > math.MaxUint32 {
+				return ErrSettlementInvalid
+			}
+			result.Payout = uint32(payout)
+			mailID, err := cmd.DeliverReward(mailboxes, rewardItemID, result.Payout)
+			if err != nil || strings.TrimSpace(mailID) == "" {
+				if err == nil {
+					err = ErrRewardPlacement
+				}
+				return fmt.Errorf("%w: %v", ErrRewardPlacement, err)
+			}
+			result.RewardItemID = rewardItemID
+			result.MailID = mailID
+			settledAt := cmd.SettledAt
+			if settledAt.IsZero() {
+				settledAt = time.Now().UTC()
+			}
+		}
+		settledAt := cmd.SettledAt
+		if settledAt.IsZero() {
+			settledAt = time.Now().UTC()
+		}
+		character.Stats[PendingStat] = 0
+		character.Stats[WinnerStat] = int64(cmd.Winner)
+		character.Stats[PayoutStat] = int64(result.Payout)
+		character.Stats[SettledUnixStat] = settledAt.UTC().Unix()
+		character.UpdatedAt = settledAt.UTC()
+		if err := dnfrepo.SaveCharacterFields(ctx, characters, character, dnfrepo.CharacterFieldStats); err != nil {
+			return err
+		}
+		result.Settled = true
+		return nil
+	})
+	if err != nil {
+		return SettlementResult{}, err
+	}
+	return result, nil
+}