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/itemcooldown/itemcooldown_test.go

@@ -0,0 +1,92 @@
+package itemcooldown
+
+import "testing"
+
+// 同组共享一个窗口：PVF [cooltime group] 的语义是"这一组道具共用一次冷却"，
+// 现场 2026-09-17 的 66 组里就放着首日/次日/三日/第N天礼盒。
+func TestBlocksSharesOneWindowPerCooltimeGroup(t *testing.T) {
+	now := int64(1_000_000)
+	stats := map[string]int64{}
+	Set(stats, 490702504, now+86_400)
+	groups := map[int64]int64{490702504: 66, 490702505: 66, 490702506: 66, 999: 7}
+	groupOf := func(itemID int64) int64 { return groups[itemID] }
+
+	if entry, blocked := Blocks(stats, now, 490702504, 66, groupOf); !blocked || entry.ItemID != 490702504 {
+		t.Fatalf("same item not blocked: %+v blocked=%t", entry, blocked)
+	}
+	if entry, blocked := Blocks(stats, now, 490702505, 66, groupOf); !blocked || entry.ItemID != 490702504 {
+		t.Fatalf("same group item not blocked: %+v blocked=%t", entry, blocked)
+	}
+	if _, blocked := Blocks(stats, now, 999, 7, groupOf); blocked {
+		t.Fatal("an unrelated group was blocked")
+	}
+	// 组 0 = 只锁自己：另一件没有组的道具不受影响。
+	Set(stats, 490000001, now+60)
+	if _, blocked := Blocks(stats, now, 490000002, 0, groupOf); blocked {
+		t.Fatal("a groupless item blocked another groupless item")
+	}
+}
+
+func TestBlocksIgnoresExpiredWindows(t *testing.T) {
+	now := int64(1_000_000)
+	stats := map[string]int64{StatKey(3037): now - 1, StatKey(3038): now + 5}
+	if _, blocked := Blocks(stats, now, 3037, 0, nil); blocked {
+		t.Fatal("an expired window still blocked the item")
+	}
+	if _, blocked := Blocks(stats, now, 3038, 0, nil); !blocked {
+		t.Fatal("a running window did not block the item")
+	}
+	if active := ActiveEntries(stats, now); len(active) != 1 || active[0].ItemID != 3038 {
+		t.Fatalf("active entries = %+v", active)
+	}
+	// 过期行惰性清理：清掉之后同一个 stats 里只剩还在跑的那一条。
+	if !Prune(stats, now) {
+		t.Fatal("Prune reported no change with an expired row present")
+	}
+	if _, found := stats[StatKey(3037)]; found {
+		t.Fatalf("expired row survived prune: %+v", stats)
+	}
+	if got, found := ExpireAt(stats, 3038); !found || got != now+5 {
+		t.Fatalf("running row lost by prune: %d found=%t", got, found)
+	}
+	if Prune(stats, now) {
+		t.Fatal("Prune reported a change with nothing expired")
+	}
+}
+
+func TestMillisecondsToSecondsRoundsUpSubSecondWindows(t *testing.T) {
+	cases := []struct {
+		milliseconds int64
+		want         int64
+	}{
+		{milliseconds: 0, want: 0},
+		{milliseconds: -5, want: 0},
+		{milliseconds: 1, want: 1},
+		{milliseconds: 999, want: 1},
+		{milliseconds: 1_000, want: 1},
+		{milliseconds: 10_000, want: 10},
+		{milliseconds: 1_800_000, want: 1_800},
+		{milliseconds: 86_400_000, want: 86_400},
+		{milliseconds: 2_147_483_647, want: 2_147_484},
+	}
+	for _, testCase := range cases {
+		if got := MillisecondsToSeconds(testCase.milliseconds); got != testCase.want {
+			t.Fatalf("MillisecondsToSeconds(%d) = %d, want %d", testCase.milliseconds, got, testCase.want)
+		}
+	}
+}
+
+// Entries 只认自己的前缀：每日次数（item_daily_used_*）之类的邻居 stat 不能串进来。
+func TestEntriesIgnoreForeignStatKeys(t *testing.T) {
+	stats := map[string]int64{
+		StatKey(3037):             5,
+		"item_daily_used_3037":    2,
+		"weakness_online_seconds": 900,
+		"item_cooltime_":          7,
+		"item_cooltime_abc":       7,
+	}
+	entries := Entries(stats)
+	if len(entries) != 1 || entries[0].ItemID != 3037 || entries[0].ExpireAt != 5 {
+		t.Fatalf("entries = %+v", entries)
+	}
+}