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/mailbox_notification_test.go

@@ -0,0 +1,128 @@
+package dnfbridge
+
+import (
+	"bytes"
+	"context"
+	"testing"
+	"time"
+
+	"longheng.io/server/internal/modules/dnf/channelcatalog"
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+	dnfrepomemory "longheng.io/server/internal/modules/dnf/repository/memory"
+)
+
+func TestOnlineMailboxRecipientGetsCurrentClass0Alarm(t *testing.T) {
+	ctx := context.Background()
+	repositories := dnfrepomemory.NewMemoryGroup()
+	if err := repositories.Mailbox.Save(ctx, dnfrepo.MailboxRecord{
+		CharacterID: "88",
+		Mails: map[string]dnfrepo.MailRecord{
+			"1": {MailID: "1", CreatedAt: time.Now().UTC()},
+		},
+	}); err != nil {
+		t.Fatalf("save mailbox: %v", err)
+	}
+	connection := &bufferConn{}
+	recipient := &gameSession{
+		conn:                connection,
+		connID:              "mailbox-online-recipient",
+		channel:             channelcatalog.Channel{ID: 19},
+		selectedCharacterID: 88,
+	}
+	service := &Service{
+		options: options{
+			gameUpperHeader:    gameUpperHeaderServer16,
+			gameUpperBodyCodec: gameUpperBodyCodecPlain,
+		},
+		repositoryProvider: func() (dnfrepo.Group, bool) { return repositories, true },
+		gameSessions:       map[uint16]*gameSession{88: recipient},
+	}
+
+	if err := service.sendMailboxAlarmToOnlineRecipient(88); err != nil {
+		t.Fatalf("send mailbox alarm: %v", err)
+	}
+	packet, trailing := splitGameServerUpperPacket(t, connection.write.Bytes())
+	if len(trailing) != 0 || packet.Header.MsgID != 0x0063 || packet.Header.Classification != 0 ||
+		!bytes.Equal(packet.Body, []byte{0x00, 0x00, 0x00, 0x01, 0x00}) {
+		t.Fatalf("class0/0x63 packet header=%+v body=% X trailing=% X", packet.Header, packet.Body, trailing)
+	}
+}
+
+func TestMailboxAlarmForSessionClearsEmptyMailboxState(t *testing.T) {
+	repositories := dnfrepomemory.NewMemoryGroup()
+	connection := &bufferConn{}
+	session := &gameSession{
+		conn:                connection,
+		connID:              "mailbox-empty-state",
+		channel:             channelcatalog.Channel{ID: 19},
+		selectedCharacterID: 88,
+	}
+	service := &Service{
+		options: options{
+			gameUpperHeader:    gameUpperHeaderServer16,
+			gameUpperBodyCodec: gameUpperBodyCodecPlain,
+		},
+		repositoryProvider: func() (dnfrepo.Group, bool) { return repositories, true },
+	}
+
+	if err := service.sendMailboxAlarmForSession(session, 88, "test_empty_mailbox"); err != nil {
+		t.Fatalf("send empty mailbox alarm: %v", err)
+	}
+	packet, trailing := splitGameServerUpperPacket(t, connection.write.Bytes())
+	if len(trailing) != 0 || packet.Header.MsgID != 0x0063 || packet.Header.Classification != 0 ||
+		!bytes.Equal(packet.Body, []byte{0x00, 0x00, 0x00, 0x00, 0x00}) {
+		t.Fatalf("empty class0/0x63 packet header=%+v body=% X trailing=% X", packet.Header, packet.Body, trailing)
+	}
+}
+
+func TestInitialTownSceneTailSendsMailboxAlarmOnce(t *testing.T) {
+	service, session := newDeferredTailResumeFixture(t)
+	repositories, available := service.repositoryGroup()
+	if !available {
+		t.Fatal("mailbox repositories are unavailable")
+	}
+	characterID := "29"
+	if err := repositories.Mailbox.Save(context.Background(), dnfrepo.MailboxRecord{
+		CharacterID: characterID,
+		Mails: map[string]dnfrepo.MailRecord{
+			"1": {MailID: "1", CreatedAt: time.Now().UTC()},
+			"2": {MailID: "2", Read: true, CreatedAt: time.Now().UTC()},
+		},
+	}); err != nil {
+		t.Fatalf("save mailbox: %v", err)
+	}
+
+	if err := service.sendDeferredSelectSceneTail(session, "initial_town_mailbox_alarm"); err != nil {
+		t.Fatalf("send initial town scene tail: %v", err)
+	}
+	packets := splitAllCurrentUpperPackets(t, session.conn.(*bufferConn).write.Bytes())
+	alarmCount := 0
+	alarmIndex := -1
+	rentalIndex := -1
+	for index, packet := range packets {
+		if packet.Header.Classification != 0 {
+			continue
+		}
+		if packet.Header.MsgID == currentRentalStateMsgID {
+			rentalIndex = index
+		}
+		if packet.Header.MsgID == 0x0063 {
+			alarmCount++
+			alarmIndex = index
+			if !bytes.Equal(packet.Body, []byte{0x01, 0x00}) {
+				t.Fatalf("initial mailbox alarm body=% X, want 01 00", packet.Body)
+			}
+		}
+	}
+	if alarmCount != 1 || alarmIndex <= rentalIndex {
+		t.Fatalf("initial mailbox alarm count=%d index=%d rental_index=%d", alarmCount, alarmIndex, rentalIndex)
+	}
+
+	firstWriteLen := session.conn.(*bufferConn).write.Len()
+	if err := service.sendDeferredSelectSceneTail(session, "duplicate_initial_town_mailbox_alarm"); err != nil {
+		t.Fatalf("repeat initial town scene tail: %v", err)
+	}
+	if session.conn.(*bufferConn).write.Len() != firstWriteLen {
+		t.Fatalf("duplicate initial town scene tail replayed mailbox alarm")
+	}
+}