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/eventlog/admin.go

@@ -0,0 +1,161 @@
+package eventlog
+
+import (
+	"errors"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"longheng.io/server/internal/platform/httpx"
+)
+
+// ErrAdminMuxRequired 表示管理路由注册缺少 HTTP mux。
+var ErrAdminMuxRequired = errors.New("eventlog admin mux is required")
+
+// AdminOptions 描述 eventlog 管理接口的挂载前缀和鉴权包装器。
+type AdminOptions struct {
+	Prefix string
+	Wrap   func(http.HandlerFunc) http.HandlerFunc
+}
+
+// RegisterAdminRoutes 把快照、死信查询和死信重投接口注册到管理 mux。
+func RegisterAdminRoutes(mux *http.ServeMux, log *Log, options AdminOptions) error {
+	if mux == nil {
+		return ErrAdminMuxRequired
+	}
+	prefix := normalizeAdminPrefix(options.Prefix)
+	wrap := options.Wrap
+	if wrap == nil {
+		wrap = func(next http.HandlerFunc) http.HandlerFunc { return next }
+	}
+	handler := wrap(SnapshotHandler(log))
+	mux.HandleFunc(prefix, handler)
+	mux.HandleFunc(prefix+"/snapshot", handler)
+	mux.HandleFunc(prefix+"/deadletters", wrap(DeadLettersHandler(log)))
+	mux.HandleFunc(prefix+"/deadletters/requeue", wrap(RequeueDeadLetterHandler(log)))
+	return nil
+}
+
+// SnapshotHandler 返回 eventlog 当前状态快照的只读管理接口。
+func SnapshotHandler(log *Log) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodGet {
+			w.Header().Set("Allow", http.MethodGet)
+			httpx.WriteJSON(w, http.StatusMethodNotAllowed, map[string]string{"error": "method not allowed"})
+			return
+		}
+		if log == nil {
+			httpx.WriteJSON(w, http.StatusServiceUnavailable, map[string]string{"error": ErrStoreRequired.Error()})
+			return
+		}
+		snapshot, err := log.Snapshot(r.Context())
+		if err != nil {
+			httpx.WriteJSON(w, http.StatusServiceUnavailable, map[string]string{"error": err.Error()})
+			return
+		}
+		httpx.WriteJSON(w, http.StatusOK, snapshot)
+	}
+}
+
+// DeadLettersHandler 返回死信事件列表的只读管理接口。
+func DeadLettersHandler(log *Log) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodGet {
+			w.Header().Set("Allow", http.MethodGet)
+			httpx.WriteJSON(w, http.StatusMethodNotAllowed, map[string]string{"error": "method not allowed"})
+			return
+		}
+		if log == nil {
+			httpx.WriteJSON(w, http.StatusServiceUnavailable, map[string]string{"error": ErrStoreRequired.Error()})
+			return
+		}
+		limit, err := parsePositiveLimit(r.URL.Query().Get("limit"))
+		if err != nil {
+			httpx.WriteJSON(w, http.StatusBadRequest, map[string]string{"error": err.Error()})
+			return
+		}
+		events, err := log.DeadLetters(r.Context(), limit)
+		if err != nil {
+			httpx.WriteJSON(w, http.StatusServiceUnavailable, map[string]string{"error": err.Error()})
+			return
+		}
+		httpx.WriteJSON(w, http.StatusOK, map[string]any{"dead_letters": events})
+	}
+}
+
+// RequeueDeadLetterHandler 返回死信事件重新入队的管理接口。
+func RequeueDeadLetterHandler(log *Log) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			w.Header().Set("Allow", http.MethodPost)
+			httpx.WriteJSON(w, http.StatusMethodNotAllowed, map[string]string{"error": "method not allowed"})
+			return
+		}
+		if log == nil {
+			httpx.WriteJSON(w, http.StatusServiceUnavailable, map[string]string{"error": ErrStoreRequired.Error()})
+			return
+		}
+		id := strings.TrimSpace(r.URL.Query().Get("id"))
+		if id == "" {
+			id = strings.TrimSpace(r.URL.Query().Get("event_id"))
+		}
+		if id == "" {
+			httpx.WriteJSON(w, http.StatusBadRequest, map[string]string{"error": "id is required"})
+			return
+		}
+		preserveAttempts, err := parseOptionalBool(r.URL.Query().Get("preserve_attempts"))
+		if err != nil {
+			httpx.WriteJSON(w, http.StatusBadRequest, map[string]string{"error": err.Error()})
+			return
+		}
+		event, err := log.RequeueDeadLetter(r.Context(), id, RequeueOptions{PreserveAttempts: preserveAttempts})
+		if err != nil {
+			status := http.StatusServiceUnavailable
+			if errors.Is(err, ErrEventNotFound) {
+				status = http.StatusNotFound
+			}
+			httpx.WriteJSON(w, status, map[string]string{"error": err.Error()})
+			return
+		}
+		httpx.WriteJSON(w, http.StatusOK, map[string]any{"status": "requeued", "event": event})
+	}
+}
+
+func normalizeAdminPrefix(prefix string) string {
+	prefix = strings.TrimSpace(prefix)
+	if prefix == "" {
+		return "/eventlog"
+	}
+	if !strings.HasPrefix(prefix, "/") {
+		prefix = "/" + prefix
+	}
+	prefix = strings.TrimRight(prefix, "/")
+	if prefix == "" {
+		return "/eventlog"
+	}
+	return prefix
+}
+
+func parsePositiveLimit(raw string) (int, error) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return 0, nil
+	}
+	limit, err := strconv.Atoi(raw)
+	if err != nil || limit < 0 {
+		return 0, ErrInvalidLimit
+	}
+	return limit, nil
+}
+
+func parseOptionalBool(raw string) (bool, error) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return false, nil
+	}
+	value, err := strconv.ParseBool(raw)
+	if err != nil {
+		return false, err
+	}
+	return value, nil
+}