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/inventory/handler_amplify_test.go

@@ -0,0 +1,101 @@
+package inventory
+
+import (
+	"bytes"
+	"context"
+	"encoding/binary"
+	"testing"
+
+	"longheng.io/server/internal/modules/dnf/alignedcmd"
+	"longheng.io/server/internal/modules/dnf/dnfenum"
+	dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+	dnfrepomemory "longheng.io/server/internal/modules/dnf/repository/memory"
+)
+
+func purifyRequestBody(targetSlot int16, targetItem int32, materialSlot int16, materialItem int32) []byte {
+	body := make([]byte, 12)
+	binary.LittleEndian.PutUint16(body[0:2], uint16(targetSlot))
+	binary.LittleEndian.PutUint32(body[2:6], uint32(targetItem))
+	binary.LittleEndian.PutUint16(body[6:8], uint16(materialSlot))
+	binary.LittleEndian.PutUint32(body[8:12], uint32(materialItem))
+	return body
+}
+
+func investRequestBody(action byte, targetSlot int16, targetItem int32, materialSlot int16, materialItem int32, selected byte, name string) []byte {
+	body := make([]byte, 14)
+	body[0] = action
+	binary.LittleEndian.PutUint16(body[1:3], uint16(targetSlot))
+	binary.LittleEndian.PutUint32(body[3:7], uint32(targetItem))
+	binary.LittleEndian.PutUint16(body[7:9], uint16(materialSlot))
+	binary.LittleEndian.PutUint32(body[9:13], uint32(materialItem))
+	body[13] = selected
+	if action == investAmplifyActionPureGold {
+		length := make([]byte, 4)
+		binary.LittleEndian.PutUint32(length, uint32(len(name)))
+		body = append(body, length...)
+		body = append(body, name...)
+	}
+	return body
+}
+
+func handleAmplifyRequest(t *testing.T, repos dnfrepo.Group, opcode dnfenum.CmdPacket, body []byte, resolver alignedcmd.AmplifyItemResolver) alignedcmd.Result {
+	t.Helper()
+	result, err := NewHandler().Handle(context.Background(), alignedcmd.Request{
+		Opcode:              uint16(opcode),
+		Body:                body,
+		SelectedCharacterID: 77,
+		Repositories:        repos,
+		AmplifyItemResolver: resolver,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	return result
+}
+
+func TestHandlerAmplifySuccessUsesOnlySelfContainedACK(t *testing.T) {
+	ctx := context.Background()
+	t.Run("op204", func(t *testing.T) {
+		repos := dnfrepomemory.NewMemoryGroup()
+		saveAmplifyFixture(t, ctx, repos, unidentifiedAmplifyFlag, 0, 0, 1183, 1)
+		resolution := validAmplifyResolution()
+		resolution.PurifyMaterialCount = 1
+		got := handleAmplifyRequest(t, repos, dnfenum.CmdPacketPurifyItem, purifyRequestBody(9, 700, 12, 1183), staticAmplifyResolver(resolution))
+		if !got.Handled || !got.ResponseAllowed || len(got.UpperResponses) != 1 || len(got.PostActions) != 0 {
+			t.Fatalf("result = %+v", got)
+		}
+		ack := got.UpperResponses[0]
+		if ack.Classification != 1 || ack.MsgID != uint16(dnfenum.CmdPacketPurifyItem) || len(ack.Body) != 12 || ack.Body[0] != 1 {
+			t.Fatalf("ACK = %+v", ack)
+		}
+	})
+
+	t.Run("op205 Pure Gold", func(t *testing.T) {
+		repos := dnfrepomemory.NewMemoryGroup()
+		saveAmplifyFixture(t, ctx, repos, 1, 7, 0, 8238, 1)
+		resolution := validAmplifyResolution()
+		resolution.PureGoldOption = amplifyOptionAll
+		resolution.PureGoldMaterialCount = 1
+		resolution.PureGoldLevels = []alignedcmd.AmplifyWeightedLevel{{Level: 7, Weight: 1}}
+		got := handleAmplifyRequest(t, repos, dnfenum.CmdPacketInvestItemAmplifyOption, investRequestBody(2, 9, 700, 12, 8238, 4, "target"), staticAmplifyResolver(resolution))
+		if !got.Handled || !got.ResponseAllowed || len(got.UpperResponses) != 1 || len(got.PostActions) != 0 {
+			t.Fatalf("result = %+v", got)
+		}
+		ack := got.UpperResponses[0]
+		if ack.Classification != 1 || ack.MsgID != uint16(dnfenum.CmdPacketInvestItemAmplifyOption) || len(ack.Body) != 14 || ack.Body[0] != 1 || ack.Body[13] != 7 {
+			t.Fatalf("ACK = %+v", ack)
+		}
+	})
+}
+
+func TestHandlerAmplifyFailuresReturnProvenErrorEnvelopes(t *testing.T) {
+	repos := dnfrepomemory.NewMemoryGroup()
+	got := handleAmplifyRequest(t, repos, dnfenum.CmdPacketPurifyItem, []byte{1, 2}, nil)
+	if len(got.UpperResponses) != 1 || !bytes.Equal(got.UpperResponses[0].Body, []byte{0, 1}) {
+		t.Fatalf("op204 error result = %+v", got)
+	}
+	got = handleAmplifyRequest(t, repos, dnfenum.CmdPacketInvestItemAmplifyOption, []byte{1, 2}, nil)
+	if len(got.UpperResponses) != 1 || !bytes.Equal(got.UpperResponses[0].Body, []byte{0, investAmplifyErrorInvalid}) {
+		t.Fatalf("op205 error result = %+v", got)
+	}
+}