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/raid/availability.go

@@ -0,0 +1,55 @@
+package raid
+
+import "errors"
+
+const (
+	// RaidAvailabilityMsgID is the current class-0 notification registered by
+	// DNF.exe for the three daily team-raid availability rows. It is written as
+	// hexadecimal here deliberately: the generated command enum's decimal 517
+	// entry is a different legacy command.
+	RaidAvailabilityMsgID uint16 = 0x0517
+
+	RaidAvailabilityRowCount = 3
+)
+
+var errRaidAvailabilityRowCount = errors.New("raid availability requires exactly three rows")
+
+// RaidAvailabilityRow is one five-byte row consumed by the current client:
+// key, used count, daily limit, and two opaque bytes.
+type RaidAvailabilityRow struct {
+	Key    byte
+	Used   byte
+	Limit  byte
+	Field3 byte
+	Field4 byte
+}
+
+// BuildRaidAvailabilityBody builds the exact fixed-width 0x0517 body.
+// DNF.exe reads three rows unconditionally, so accepting another count would
+// shift the following packet boundary or leave the client waiting for bytes.
+func BuildRaidAvailabilityBody(rows []RaidAvailabilityRow) ([]byte, error) {
+	if len(rows) != RaidAvailabilityRowCount {
+		return nil, errRaidAvailabilityRowCount
+	}
+	body := make([]byte, 0, RaidAvailabilityRowCount*5)
+	for _, row := range rows {
+		body = append(body, row.Key, row.Used, row.Limit, row.Field3, row.Field4)
+	}
+	return body, nil
+}
+
+// BuildNativeRaidAvailabilityBody exposes the current local 90CN defaults:
+// all three registered team-raid keys are available once today and have not
+// been entered yet. The opaque fields remain zero until a client meaning is
+// proved independently.
+func BuildNativeRaidAvailabilityBody() []byte {
+	body, err := BuildRaidAvailabilityBody([]RaidAvailabilityRow{
+		{Key: 1, Limit: 1},
+		{Key: 2, Limit: 1},
+		{Key: 3, Limit: 1},
+	})
+	if err != nil {
+		panic(err)
+	}
+	return body
+}