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/party_udp_probe_test.go

@@ -0,0 +1,100 @@
+package dnfbridge
+
+import (
+	"context"
+	"encoding/binary"
+	"net"
+	"net/netip"
+	"testing"
+	"time"
+)
+
+func TestCurrentPartyUDPProbeReflectsNativeSourceTuple(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	observed := make(chan netip.AddrPort, 1)
+	probe, err := newCurrentPartyUDPProbe(
+		ctx,
+		"127.0.0.1",
+		[]int{0},
+		func(endpoint netip.AddrPort) { observed <- endpoint },
+		nil,
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer probe.Close()
+	if len(probe.conns) != 1 {
+		t.Fatalf("probe listeners=%d want=1", len(probe.conns))
+	}
+	serverAddress := probe.conns[0].LocalAddr().(*net.UDPAddr)
+	client, err := net.DialUDP("udp4", nil, serverAddress)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer client.Close()
+	if _, err := client.Write([]byte{1}); err != nil {
+		t.Fatal(err)
+	}
+	if err := client.SetReadDeadline(time.Now().Add(time.Second)); err != nil {
+		t.Fatal(err)
+	}
+	response := make([]byte, currentPartyUDPProbeResponseSize)
+	if _, err := client.Read(response); err != nil {
+		t.Fatal(err)
+	}
+	local := client.LocalAddr().(*net.UDPAddr)
+	if response[0] != currentPartyUDPProbeResponseType ||
+		binary.LittleEndian.Uint16(response[5:7]) != uint16(local.Port) {
+		t.Fatalf("probe response=%x local=%v", response, local)
+	}
+	select {
+	case endpoint := <-observed:
+		if endpoint.Port() != uint16(local.Port) || !endpoint.Addr().IsLoopback() {
+			t.Fatalf("observed endpoint=%v local=%v", endpoint, local)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("UDP endpoint was not observed")
+	}
+}
+
+func TestCurrentPartyUDPProbeBindsTwoLocalClientsByOwningPID(t *testing.T) {
+	first := &gameSession{conn: &bufferConn{}, connID: "first", clientPID: 101, selectedCharacterID: 1}
+	second := &gameSession{conn: &bufferConn{}, connID: "second", clientPID: 202, selectedCharacterID: 2}
+	service := &Service{
+		options:        options{serverIP: "192.168.5.3"},
+		gameSessions:   map[uint16]*gameSession{1: first, 2: second},
+		partyEndpoints: newCurrentPartyUDPEndpointRegistry(),
+		partyUDPOwnerPID: func(endpoint netip.AddrPort) (uint32, bool) {
+			if endpoint.Port() == 55540 {
+				return 202, true
+			}
+			return 101, true
+		},
+	}
+	service.observeCurrentPartyUDPEndpoint(netip.MustParseAddrPort("192.168.5.3:5063"))
+	service.observeCurrentPartyUDPEndpoint(netip.MustParseAddrPort("192.168.5.3:55540"))
+	if got := currentPartyPeerPort(first); got != 5063 {
+		t.Fatalf("first endpoint=%d want=5063", got)
+	}
+	if got := currentPartyPeerPort(second); got != 55540 {
+		t.Fatalf("second endpoint=%d want=55540", got)
+	}
+}
+
+func TestCurrentPartyUDPProbeRestoresEndpointObservedBeforeCharacterBind(t *testing.T) {
+	service := &Service{
+		options:        options{serverIP: "192.168.5.3"},
+		gameSessions:   make(map[uint16]*gameSession),
+		partyEndpoints: newCurrentPartyUDPEndpointRegistry(),
+		partyUDPOwnerPID: func(netip.AddrPort) (uint32, bool) {
+			return 303, true
+		},
+	}
+	service.observeCurrentPartyUDPEndpoint(netip.MustParseAddrPort("192.168.5.3:63226"))
+	session := &gameSession{conn: &bufferConn{}, connID: "late-bind", clientPID: 303}
+	service.bindGameSessionCharacter(session, 7)
+	if got := currentPartyPeerPort(session); got != 63226 {
+		t.Fatalf("restored endpoint=%d want=63226", got)
+	}
+}