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/experiencebonus/consumable.go

@@ -0,0 +1,99 @@
+package experiencebonus
+
+import (
+	"errors"
+	"strconv"
+	"strings"
+	"time"
+
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+)
+
+const (
+	BonusPercentMetadataKey = "experience_consumable_bonus_percent"
+	ExpireAtMetadataKey     = "experience_consumable_expire_at"
+	ItemIDMetadataKey       = "experience_consumable_item_id"
+)
+
+var (
+	ErrEffectInvalid = errors.New("experience consumable effect is invalid")
+	ErrEffectActive  = errors.New("experience consumable effect is already active")
+)
+
+type Effect struct {
+	CharacterID  string
+	ItemID       int64
+	BonusPercent int64
+	ExpireAt     time.Time
+}
+
+func Active(account dnfrepo.AccountRecord, now time.Time) (Effect, bool) {
+	return activeWithKeys(account, "", now)
+}
+
+// ActiveForCharacter reads the character-scoped effect stored in account
+// metadata. The account repository is retained as the durable owner, but a
+// different character in the same account must never inherit the buff.
+func ActiveForCharacter(account dnfrepo.AccountRecord, characterID string, now time.Time) (Effect, bool) {
+	return activeWithKeys(account, strings.TrimSpace(characterID), now)
+}
+
+func activeWithKeys(account dnfrepo.AccountRecord, characterID string, now time.Time) (Effect, bool) {
+	if account.Metadata == nil {
+		return Effect{}, false
+	}
+	bonusKey, expireKey, itemKey := metadataKeys(characterID)
+	percent, percentErr := strconv.ParseInt(strings.TrimSpace(account.Metadata[bonusKey]), 10, 64)
+	expireUnix, expireErr := strconv.ParseInt(strings.TrimSpace(account.Metadata[expireKey]), 10, 64)
+	itemID, _ := strconv.ParseInt(strings.TrimSpace(account.Metadata[itemKey]), 10, 64)
+	if percentErr != nil || expireErr != nil || percent <= 0 || expireUnix <= 0 {
+		return Effect{}, false
+	}
+	expireAt := time.Unix(expireUnix, 0).UTC()
+	if !expireAt.After(now.UTC()) {
+		return Effect{}, false
+	}
+	return Effect{CharacterID: characterID, ItemID: itemID, BonusPercent: percent, ExpireAt: expireAt}, true
+}
+
+func Activate(account *dnfrepo.AccountRecord, itemID int64, bonusPercent int64, duration time.Duration, now time.Time) (Effect, error) {
+	return activateWithCharacter(account, "", itemID, bonusPercent, duration, now)
+}
+
+// ActivateForCharacter stores the effect under keys scoped to one character.
+func ActivateForCharacter(account *dnfrepo.AccountRecord, characterID string, itemID int64, bonusPercent int64, duration time.Duration, now time.Time) (Effect, error) {
+	return activateWithCharacter(account, strings.TrimSpace(characterID), itemID, bonusPercent, duration, now)
+}
+
+func activateWithCharacter(account *dnfrepo.AccountRecord, characterID string, itemID int64, bonusPercent int64, duration time.Duration, now time.Time) (Effect, error) {
+	if account == nil || itemID <= 0 || bonusPercent <= 0 || duration <= 0 {
+		return Effect{}, ErrEffectInvalid
+	}
+	now = now.UTC()
+	if _, active := activeWithKeys(*account, characterID, now); active {
+		return Effect{}, ErrEffectActive
+	}
+	effect := Effect{
+		CharacterID:  characterID,
+		ItemID:       itemID,
+		BonusPercent: bonusPercent,
+		ExpireAt:     now.Add(duration).UTC(),
+	}
+	if account.Metadata == nil {
+		account.Metadata = make(map[string]string, 3)
+	}
+	bonusKey, expireKey, itemKey := metadataKeys(characterID)
+	account.Metadata[bonusKey] = strconv.FormatInt(effect.BonusPercent, 10)
+	account.Metadata[expireKey] = strconv.FormatInt(effect.ExpireAt.Unix(), 10)
+	account.Metadata[itemKey] = strconv.FormatInt(effect.ItemID, 10)
+	account.UpdatedAt = now
+	return effect, nil
+}
+
+func metadataKeys(characterID string) (bonus, expire, item string) {
+	if strings.TrimSpace(characterID) == "" {
+		return BonusPercentMetadataKey, ExpireAtMetadataKey, ItemIDMetadataKey
+	}
+	prefix := "experience_consumable." + strings.TrimSpace(characterID) + "."
+	return prefix + "bonus_percent", prefix + "expire_at", prefix + "item_id"
+}