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/platform/hotupdate/diff.go

@@ -0,0 +1,92 @@
+package hotupdate
+
+import (
+	"context"
+	"sort"
+	"time"
+)
+
+type BundleDiff struct {
+	PreviousVersion string       `json:"previous_version,omitempty"`
+	CurrentVersion  string       `json:"current_version,omitempty"`
+	Added           []BundleFile `json:"added,omitempty"`
+	Modified        []BundleFile `json:"modified,omitempty"`
+	Removed         []BundleFile `json:"removed,omitempty"`
+	Unchanged       []BundleFile `json:"unchanged,omitempty"`
+	ChangedBytes    int64        `json:"changed_bytes,omitempty"`
+	CreatedAt       time.Time    `json:"created_at"`
+}
+
+func ScanBundleManifest(ctx context.Context, sourceDir, version string) (BundleManifest, error) {
+	if err := contextErr(ctx); err != nil {
+		return BundleManifest{}, err
+	}
+	files, err := bundleFiles(ctx, sourceDir)
+	if err != nil {
+		return BundleManifest{}, err
+	}
+	bytes, checksum := bundleSummary(files)
+	return BundleManifest{
+		Version:   version,
+		Files:     cloneBundleFiles(files),
+		Bytes:     bytes,
+		Checksum:  checksum,
+		CreatedAt: time.Now().UTC(),
+	}, nil
+}
+
+func DiffBundleManifests(previous, current BundleManifest) BundleDiff {
+	previousByPath := bundleFilesByPath(previous.Files)
+	currentByPath := bundleFilesByPath(current.Files)
+	diff := BundleDiff{
+		PreviousVersion: previous.Version,
+		CurrentVersion:  current.Version,
+		CreatedAt:       time.Now().UTC(),
+	}
+	for path, file := range currentByPath {
+		old, ok := previousByPath[path]
+		switch {
+		case !ok:
+			diff.Added = append(diff.Added, file)
+			diff.ChangedBytes += file.Bytes
+		case old.Checksum != file.Checksum || old.Bytes != file.Bytes:
+			diff.Modified = append(diff.Modified, file)
+			diff.ChangedBytes += file.Bytes
+		default:
+			diff.Unchanged = append(diff.Unchanged, file)
+		}
+	}
+	for path, file := range previousByPath {
+		if _, ok := currentByPath[path]; ok {
+			continue
+		}
+		diff.Removed = append(diff.Removed, file)
+	}
+	sortBundleFiles(diff.Added)
+	sortBundleFiles(diff.Modified)
+	sortBundleFiles(diff.Removed)
+	sortBundleFiles(diff.Unchanged)
+	return diff
+}
+
+func bundleFilesByPath(files []BundleFile) map[string]BundleFile {
+	out := make(map[string]BundleFile, len(files))
+	for _, file := range files {
+		if err := validateBundlePath(file.Path); err != nil {
+			continue
+		}
+		out[file.Path] = file
+	}
+	return out
+}
+
+func cloneBundleFiles(files []BundleFile) []BundleFile {
+	if len(files) == 0 {
+		return nil
+	}
+	return append([]BundleFile(nil), files...)
+}
+
+func sortBundleFiles(files []BundleFile) {
+	sort.Slice(files, func(i, j int) bool { return files[i].Path < files[j].Path })
+}