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/dproto/session.go

@@ -0,0 +1,55 @@
+// Package dproto defines the server-side boundary for the native DNF
+// protected transport. It deliberately does not implement TerSafe crypto:
+// callers must inject a verified server-role provider.
+package dproto
+
+import (
+	"context"
+	"errors"
+)
+
+var (
+	ErrProviderUnavailable = errors.New("dnf dproto server-role provider is unavailable")
+	ErrEmptyProviderOutput = errors.New("dnf dproto provider returned an empty wire packet")
+)
+
+// ConnectionInfo identifies one game TCP connection. A Provider must create
+// independent state for every call to Open; DPROTO sequence, handshake and
+// cipher state must never be shared between game connections.
+type ConnectionInfo struct {
+	ConnectionID string
+	RemoteAddr   string
+	LocalAddr    string
+	ChannelID    int
+}
+
+// DecodeResult contains complete plaintext upper packets plus any complete
+// server wire packets produced by the protected-transport control state.
+// Returned byte slices are owned by the caller.
+type DecodeResult struct {
+	InnerPackets    [][]byte
+	OutboundPackets [][]byte
+}
+
+// EncodeResult is one complete server wire packet. Protected is true only
+// when Packet is a native S2C op1467 envelope; otherwise Packet must be the
+// unmodified direct inner packet supplied to EncodeServer.
+type EncodeResult struct {
+	Packet    []byte
+	Protected bool
+}
+
+// Provider opens a server-role DPROTO session for one game connection.
+type Provider interface {
+	Open(context.Context, ConnectionInfo) (Session, error)
+}
+
+// Session is the ordered, stateful server-side DPROTO peer. Implementations
+// are not required to be concurrency-safe; dnfbridge serializes every method
+// call and the resulting socket write for a connection.
+type Session interface {
+	DecodeClient(context.Context, []byte) (DecodeResult, error)
+	EncodeServer(context.Context, []byte) (EncodeResult, error)
+	HandleClientControl(context.Context, uint16, []byte) ([][]byte, error)
+	Close() error
+}