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/account_wallet.go

@@ -0,0 +1,44 @@
+package dnfbridge
+
+import (
+	"context"
+
+	dnfcerashop "longheng.io/server/internal/modules/dnf/cerashop"
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+)
+
+// currentAccountCera reads the account-shared Cera balance from account
+// metadata. The balance lives in dnf_accounts.metadata_json["account_cera"]
+// so every character on the account sees and spends the same pool; the
+// per-character dnf_characters.cera column is legacy read-only data.
+func currentAccountCera(account dnfrepo.AccountRecord) int64 {
+	return dnfcerashop.Balance(account)
+}
+
+func currentAccountWallet(account dnfrepo.AccountRecord) dnfcerashop.Wallet {
+	return dnfcerashop.WalletBalance(account)
+}
+
+// setCurrentAccountCera writes the account-shared Cera balance back through
+// the same metadata key. Negative inputs clamp to zero so a malformed caller
+// can never produce a negative shared pool.
+func setCurrentAccountCera(account *dnfrepo.AccountRecord, balance int64) {
+	dnfcerashop.SetBalance(account, balance)
+}
+
+// loadCurrentAccountCera is the read-only display path for places that only
+// need the current shared balance without joining a rental-assets mutation.
+func (s *Service) loadCurrentAccountCera(ctx context.Context, repositories dnfrepo.Group, sessions ...*gameSession) int64 {
+	return s.loadAccountWallet(ctx, repositories, s.accountIDForSession(sessions...)).Cera
+}
+
+func (s *Service) loadAccountWallet(ctx context.Context, repositories dnfrepo.Group, accountID string) dnfcerashop.Wallet {
+	if repositories.Account == nil {
+		return dnfcerashop.Wallet{}
+	}
+	account, found, err := repositories.Account.Load(ctx, accountID)
+	if err != nil || !found {
+		return dnfcerashop.Wallet{}
+	}
+	return currentAccountWallet(account)
+}