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/discovery/health_probe.go

@@ -0,0 +1,126 @@
+package discovery
+
+import (
+	"context"
+	"strings"
+	"time"
+
+	"longheng.io/server/internal/platform/registry"
+)
+
+type NodeProbe func(context.Context, registry.Node) error
+
+type ProbeOptions struct {
+	Service  string
+	Timeout  time.Duration
+	Probe    NodeProbe
+	OnChange func(ProbeResult)
+}
+
+type ProbeResult struct {
+	Service   string    `json:"service"`
+	NodeID    string    `json:"node_id"`
+	Healthy   bool      `json:"healthy"`
+	Error     string    `json:"error,omitempty"`
+	CheckedAt time.Time `json:"checked_at"`
+}
+
+func (r *Resolver) MustAlive(ctx context.Context, service, nodeID string) (bool, error) {
+	node, ok, err := r.lookupNodeDirect(ctx, service, nodeID)
+	if err != nil || !ok {
+		return false, err
+	}
+	if r.rejectsMaintaining(node) {
+		return false, nil
+	}
+	return nodeAccepting(node), nil
+}
+
+func (r *Resolver) ProbeNodes(ctx context.Context, options ProbeOptions) ([]ProbeResult, error) {
+	if r == nil || r.reg == nil {
+		return nil, ErrNoRegistry
+	}
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	service := strings.TrimSpace(options.Service)
+	if service == "" {
+		return nil, ErrNoNodes
+	}
+	if options.Probe == nil {
+		return nil, ErrNoProbe
+	}
+	nodes, err := r.reg.List(ctx, service)
+	if err != nil {
+		return nil, err
+	}
+	now := r.now().UTC()
+	results := make([]ProbeResult, 0, len(nodes))
+	for _, node := range nodes {
+		if strings.TrimSpace(node.NodeID) == "" {
+			continue
+		}
+		result := ProbeResult{
+			Service:   service,
+			NodeID:    node.NodeID,
+			CheckedAt: now,
+		}
+		probeCtx := ctx
+		cancel := func() {}
+		if options.Timeout > 0 {
+			probeCtx, cancel = context.WithTimeout(ctx, options.Timeout)
+		}
+		err := options.Probe(probeCtx, node)
+		cancel()
+		if err != nil {
+			result.Error = err.Error()
+			r.MarkFailure(node.NodeID)
+		} else {
+			result.Healthy = true
+			r.MarkSuccess(node.NodeID)
+		}
+		r.Invalidate(service)
+		if options.OnChange != nil {
+			options.OnChange(result)
+		}
+		results = append(results, result)
+	}
+	return results, nil
+}
+
+func (r *Resolver) lookupNodeDirect(ctx context.Context, service, nodeID string) (registry.Node, bool, error) {
+	if r == nil || r.reg == nil {
+		return registry.Node{}, false, ErrNoRegistry
+	}
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	service = strings.TrimSpace(service)
+	nodeID = strings.TrimSpace(nodeID)
+	if service == "" {
+		return registry.Node{}, false, ErrNoNodes
+	}
+	if nodeID == "" {
+		return registry.Node{}, false, nil
+	}
+	nodes, err := r.reg.List(ctx, service)
+	if err != nil {
+		return registry.Node{}, false, err
+	}
+	for _, node := range nodes {
+		if strings.TrimSpace(node.NodeID) == nodeID {
+			return node, true, nil
+		}
+	}
+	return registry.Node{}, false, nil
+}
+
+func (r *Resolver) rejectsMaintaining(node registry.Node) bool {
+	if r == nil {
+		return false
+	}
+	r.mu.Lock()
+	reject := r.rejectMaintaining
+	r.mu.Unlock()
+	return reject && nodeMaintaining(node.Meta)
+}