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/skillcmd/response_test.go

@@ -0,0 +1,102 @@
+package skillcmd
+
+import (
+	"errors"
+	"testing"
+
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+)
+
+func TestBuildChangeSkillSlotSuccessMatchesCurrentEXEReader(t *testing.T) {
+	body, err := BuildChangeSkillSlotSuccess(SlotMutationResult{SkillTree: 0, From: 3, To: 198})
+	if err != nil {
+		t.Fatalf("BuildChangeSkillSlotSuccess() error = %v", err)
+	}
+	if string(body) != string([]byte{1, 0, 3, 198}) {
+		t.Fatalf("body = % X", body)
+	}
+}
+
+func TestBuildChangeSkillSlotFailureMatchesCurrentEXEDispatcher(t *testing.T) {
+	if got := BuildChangeSkillSlotFailure(); string(got) != string([]byte{0}) {
+		t.Fatalf("failure body = % X", got)
+	}
+}
+
+func TestBuildChangeAnotherSkillTreeResponsesMatchCurrentEXEReader(t *testing.T) {
+	body, err := BuildChangeAnotherSkillTreeSuccess(TreeSwitchMutationResult{Current: 0, Target: 1})
+	if err != nil {
+		t.Fatalf("BuildChangeAnotherSkillTreeSuccess() error = %v", err)
+	}
+	if string(body) != string([]byte{1, 1}) {
+		t.Fatalf("success body = % X", body)
+	}
+	if string(BuildChangeAnotherSkillTreeFailure()) != string([]byte{0, 19}) {
+		t.Fatalf("failure body = % X", BuildChangeAnotherSkillTreeFailure())
+	}
+	if _, err := BuildChangeAnotherSkillTreeSuccess(TreeSwitchMutationResult{Current: 1, Target: 1}); !errors.Is(err, ErrSkillTree) {
+		t.Fatalf("same-tree success error = %v, want %v", err, ErrSkillTree)
+	}
+	if _, err := BuildChangeAnotherSkillTreeSuccess(TreeSwitchMutationResult{Current: 2, Target: 1}); !errors.Is(err, ErrSkillTree) {
+		t.Fatalf("invalid-current success error = %v, want %v", err, ErrSkillTree)
+	}
+}
+
+func TestBuildBuySkillSuccessMatchesCurrentEXEReader(t *testing.T) {
+	body, err := BuildBuySkillSuccess(MutationResult{
+		SkillTree: 0,
+		FinalMode: 3,
+		Points:    dnfrepo.SkillPointState{RemainingSP: 0x1234, RemainingTP: 0x5678},
+		Entries: []MutationEntry{
+			{Slot: 6, SkillID: 0x1122, Level: 4},
+			{Slot: 54, SkillID: 0x3344, Level: 5, CommandData: []byte{'A', 'B'}},
+		},
+	})
+	if err != nil {
+		t.Fatalf("BuildBuySkillSuccess() error = %v", err)
+	}
+	want := []byte{
+		1, 0,
+		0x34, 0x12, 0x78, 0x56,
+		2,
+		6, 0x22, 0x11, 4, 0,
+		54, 0x44, 0x33, 5, 1, 2, 'A', 'B',
+		3,
+	}
+	if string(body) != string(want) {
+		t.Fatalf("body = % X, want % X", body, want)
+	}
+}
+
+func TestBuildBuySkillSuccessRejectsUnprovenTree(t *testing.T) {
+	_, err := BuildBuySkillSuccess(MutationResult{SkillTree: 2})
+	if !errors.Is(err, ErrSkillTree) {
+		t.Fatalf("BuildBuySkillSuccess() error = %v, want ErrSkillTree", err)
+	}
+}
+
+func TestBuildBuySkillSuccessRejectsUnresolvedSlot(t *testing.T) {
+	_, err := BuildBuySkillSuccess(MutationResult{
+		Points:  dnfrepo.SkillPointState{},
+		Entries: []MutationEntry{{Slot: -1, SkillID: 46, Level: 2}},
+	})
+	if !errors.Is(err, ErrResponseSlot) {
+		t.Fatalf("BuildBuySkillSuccess() error = %v, want ErrResponseSlot", err)
+	}
+}
+
+func TestBuildBuySkillFailure(t *testing.T) {
+	if got := BuildBuySkillFailure(0x12); string(got) != string([]byte{0, 0x12}) {
+		t.Fatalf("failure body = % X", got)
+	}
+}
+
+func TestBuildSkillInitSuccessMatchesCurrentEXEReader(t *testing.T) {
+	body, err := BuildSkillInitSuccess(ResetMutationResult{SkillTree: 0})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(body) != string([]byte{1, 0, 1}) {
+		t.Fatalf("body = % X", body)
+	}
+}