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

pvf/services/sqlite_private_copy.go

@@ -0,0 +1,37 @@
+package services
+
+import (
+	"context"
+	"database/sql"
+	"os"
+)
+
+// Clone only a checkpointed main database while excluding concurrent writers.
+// The SQLite backup API remains the portable fallback, including busy WALs.
+func copyPrivateSQLiteIndex(db *sql.DB, source, target string) error {
+	ctx := context.Background()
+	conn, err := db.Conn(ctx)
+	if err != nil {
+		return err
+	}
+	var busy, pages, copied int
+	checkpointErr := conn.QueryRowContext(ctx, "PRAGMA wal_checkpoint(TRUNCATE)").Scan(&busy, &pages, &copied)
+	cloned := false
+	if checkpointErr == nil && busy == 0 {
+		if _, err := conn.ExecContext(ctx, "BEGIN IMMEDIATE"); err == nil {
+			// A writer could have committed between checkpoint and BEGIN.
+			info, statErr := os.Stat(source + "-wal")
+			if os.IsNotExist(statErr) || (statErr == nil && info.Size() == 0) {
+				cloned = cloneIndexFile(source, target) == nil
+			}
+			_, _ = conn.ExecContext(ctx, "ROLLBACK")
+		}
+	}
+	_ = conn.Close()
+	if cloned {
+		developmentLog("[pvfine:index] private SQLite snapshot mode=clone")
+		return nil
+	}
+	_ = os.Remove(target)
+	return backupSQLiteDatabase(ctx, db, target)
+}