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/repository/character_option_snapshot.go

@@ -0,0 +1,61 @@
+package repository
+
+import (
+	"context"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+)
+
+const CharacterOptionSnapshotSize = 0x200
+
+const (
+	characterOptionSnapshotFormatKey   = "format"
+	characterOptionSnapshotPayloadKey  = "payload_base64"
+	characterOptionSnapshotFormatValue = "opaque-512-base64-v1"
+)
+
+var ErrCharacterOptionSnapshotInvalid = errors.New("character option snapshot is invalid")
+
+func CharacterOptionSnapshotScope(characterID string) string {
+	return "character:" + strings.TrimSpace(characterID) + ":option_snapshot"
+}
+
+func LoadCharacterOptionSnapshot(ctx context.Context, repo SettingsRepository, characterID string) ([]byte, bool, error) {
+	characterID = strings.TrimSpace(characterID)
+	if repo == nil || characterID == "" {
+		return nil, false, ErrCharacterOptionSnapshotInvalid
+	}
+	record, found, err := repo.Load(ctx, CharacterOptionSnapshotScope(characterID))
+	if err != nil || !found {
+		return nil, found, err
+	}
+	if record.Values[characterOptionSnapshotFormatKey] != characterOptionSnapshotFormatValue {
+		return nil, false, fmt.Errorf("%w: unsupported format", ErrCharacterOptionSnapshotInvalid)
+	}
+	payload, err := base64.StdEncoding.Strict().DecodeString(record.Values[characterOptionSnapshotPayloadKey])
+	if err != nil {
+		return nil, false, fmt.Errorf("%w: decode payload: %v", ErrCharacterOptionSnapshotInvalid, err)
+	}
+	if len(payload) != CharacterOptionSnapshotSize {
+		return nil, false, fmt.Errorf("%w: payload length=%d want=%d", ErrCharacterOptionSnapshotInvalid, len(payload), CharacterOptionSnapshotSize)
+	}
+	return payload, true, nil
+}
+
+func SaveCharacterOptionSnapshot(ctx context.Context, repo SettingsRepository, characterID string, payload []byte, updatedAt time.Time) error {
+	characterID = strings.TrimSpace(characterID)
+	if repo == nil || characterID == "" || len(payload) != CharacterOptionSnapshotSize {
+		return ErrCharacterOptionSnapshotInvalid
+	}
+	return repo.Save(ctx, SettingsRecord{
+		Scope: CharacterOptionSnapshotScope(characterID),
+		Values: map[string]string{
+			characterOptionSnapshotFormatKey:  characterOptionSnapshotFormatValue,
+			characterOptionSnapshotPayloadKey: base64.StdEncoding.EncodeToString(append([]byte(nil), payload...)),
+		},
+		UpdatedAt: updatedAt,
+	})
+}