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/channel_follow_test.go

@@ -0,0 +1,130 @@
+package dnfbridge
+
+import (
+	"encoding/binary"
+	"testing"
+
+	"longheng.io/server/internal/modules/dnf/dnfenum"
+	dnfproto "longheng.io/server/internal/modules/dnf/protocol"
+)
+
+// buildChannelFollowRequestBodyForTest 构造客户端上行体: u8 region + dstr 目标名。
+func buildChannelFollowRequestBodyForTest(region byte, name string) []byte {
+	var writer packetWriter
+	writer.writeByte(region)
+	writeClientNameDstr(&writer, name)
+	return writer.bytes()
+}
+
+func TestDecodeCurrentChannelFollowRequestMatchesLiveWireShape(t *testing.T) {
+	// 线上实测: 01 | 04 00 00 00 | c4 cc c2 e8 (= “目标”的 GBK 4 字节)
+	request, ok := decodeCurrentChannelFollowRequest(
+		[]byte{0x01, 0x04, 0x00, 0x00, 0x00, 0xC4, 0xCC, 0xC2, 0xE8})
+	if !ok {
+		t.Fatal("live 804 body must decode as u8 region + dstr name")
+	}
+	if request.region != 1 || request.name == "" {
+		t.Fatalf("decoded region=%d name=%q", request.region, request.name)
+	}
+	for _, rejected := range [][]byte{
+		nil,
+		{0x01},
+		{0x01, 0x04, 0x00, 0x00, 0x00, 0xC4},
+	} {
+		if _, ok := decodeCurrentChannelFollowRequest(rejected); ok {
+			t.Fatalf("body %x must be rejected", rejected)
+		}
+	}
+}
+
+func TestHandleCurrentUserChannelRequestSendsClass1FollowResponse(t *testing.T) {
+	sourceConn := &bufferConn{}
+	targetConn := &bufferConn{}
+	source := &gameSession{conn: sourceConn, accountID: "dnf:1", selectedCharacterID: 1}
+	target := &gameSession{conn: targetConn, accountID: "dnf:2", selectedCharacterID: 5}
+	service := &Service{
+		options: options{
+			gameUpperHeader:    gameUpperHeaderServer16,
+			gameUpperBodyCodec: gameUpperBodyCodecPlain,
+			// 频道表里 41/183 这些频道的 ServerID 实测是 11; 响应必须回这个值,
+			// 而不是请求里带的 region 字节(公会/好友行硬编码的 1)。
+			channelServerID: 11,
+		},
+		onlinePlayers: newOnlinePlayerManager(),
+	}
+	service.onlinePlayers.EnterArea(&onlinePlayerInfo{
+		CharacterID: 1, Name: "source", TownID: 1, AreaID: 2, ChannelID: 11, Session: source})
+	service.onlinePlayers.EnterArea(&onlinePlayerInfo{
+		CharacterID: 5, Name: "target", TownID: 1, AreaID: 2, ChannelID: 93, Session: target})
+	service.bindGameSessionCharacter(source, 1)
+	service.bindGameSessionCharacter(target, 5)
+
+	if err := service.handleGameCommand(
+		source,
+		byte(dnfenum.GameCmdCommand),
+		uint16(dnfenum.CmdPacketRequestUserChannel),
+		buildChannelFollowRequestBodyForTest(7, "target"),
+	); err != nil {
+		t.Fatal(err)
+	}
+
+	packet, rest := splitLongHengGameServerUpperPacket(t, sourceConn.write.Bytes())
+	if len(rest) != 0 {
+		t.Fatalf("trailing bytes after follow response: %d", len(rest))
+	}
+	// 必须是 class-1 同号 804: class-0 的 804 是另一个功能,客户端不会走跟随链。
+	if packet.Header.Classification != dnfproto.DefaultChannelClassification ||
+		packet.Header.MsgID != uint16(dnfenum.CmdPacketRequestUserChannel) {
+		t.Fatalf("follow response header=%+v", packet.Header)
+	}
+	body := packet.Body
+	// 布局(真机验证): mode | flag | dstr 名字 | 大区 | 频道号
+	if len(body) < 8 || body[0] != currentChannelFollowDataMode ||
+		body[1] != currentChannelFollowFlag {
+		t.Fatalf("follow response head=%x want mode=%d flag=%d",
+			body, currentChannelFollowDataMode, currentChannelFollowFlag)
+	}
+	nameLength := int(binary.LittleEndian.Uint32(body[2:6]))
+	if nameLength != len("target") || string(body[6:6+nameLength]) != "target" {
+		t.Fatalf("follow response name=%x", body[2:])
+	}
+	tail := body[6+nameLength:]
+	// tail[0] = 大区 ID(筛频道表用), tail[1] = 目标频道号(查找目标用)。
+	if len(tail) != 2 || tail[0] != 11 || tail[1] != 93 {
+		t.Fatalf("follow response server/channel=%x want server=11 channel=93", tail)
+	}
+}
+
+func TestHandleCurrentUserChannelRequestReportsMissingTargetAsState(t *testing.T) {
+	sourceConn := &bufferConn{}
+	source := &gameSession{conn: sourceConn, accountID: "dnf:1", selectedCharacterID: 1}
+	service := &Service{
+		options: options{
+			gameUpperHeader:    gameUpperHeaderServer16,
+			gameUpperBodyCodec: gameUpperBodyCodecPlain,
+		},
+		onlinePlayers: newOnlinePlayerManager(),
+	}
+	service.onlinePlayers.EnterArea(&onlinePlayerInfo{
+		CharacterID: 1, Name: "source", TownID: 1, AreaID: 2, ChannelID: 11, Session: source})
+	service.bindGameSessionCharacter(source, 1)
+
+	if err := service.handleGameCommand(
+		source,
+		byte(dnfenum.GameCmdCommand),
+		uint16(dnfenum.CmdPacketRequestUserChannel),
+		buildChannelFollowRequestBodyForTest(1, "absent"),
+	); err != nil {
+		t.Fatal(err)
+	}
+	packet, _ := splitLongHengGameServerUpperPacket(t, sourceConn.write.Bytes())
+	if packet.Header.Classification != dnfproto.DefaultChannelClassification ||
+		packet.Header.MsgID != uint16(dnfenum.CmdPacketRequestUserChannel) {
+		t.Fatalf("missing-target follow response header=%+v", packet.Header)
+	}
+	// 只回状态包; 客户端把状态 100 显示成「缺少目标角色。」(字符串 0x8226)。
+	if len(packet.Body) != 2 || packet.Body[0] != currentChannelFollowStateMode ||
+		packet.Body[1] != currentChannelFollowMissingTargetState {
+		t.Fatalf("missing-target follow response body=%x", packet.Body)
+	}
+}