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/quest/early_main_progression.go

@@ -0,0 +1,57 @@
+package quest
+
+import dnfrepo "longheng.io/server/internal/modules/dnf/repository"
+
+// MainContinuityLevelFloor returns the minimum level required by the next
+// currently reachable PVF epic quest after the supplied quests are completed.
+// It applies the same job, grow-type, prerequisite, answer, collision, and
+// visibility predicates as op21 while evaluating the successor at its own
+// minimum level. Different eligible target levels are treated as an ambiguous
+// branch and fail closed.
+func (c *Catalog) MainContinuityLevelFloor(
+	character CharacterEligibility,
+	record dnfrepo.QuestRecord,
+	completedQuestIDs ...int64,
+) (int, bool) {
+	if c == nil || len(completedQuestIDs) == 0 {
+		return 0, false
+	}
+	primary, found := c.Find(completedQuestIDs[0])
+	if !found || normalizeQuestTag(primary.Grade) != "epic" ||
+		!definitionMatchesCharacter(primary, character) {
+		return 0, false
+	}
+	completed, active := questStateSets(record)
+	for _, questID := range completedQuestIDs {
+		if questID <= 0 {
+			return 0, false
+		}
+		completed[questID] = struct{}{}
+		delete(active, questID)
+	}
+	answers := questAnswerSelections(record)
+	targetLevel := 0
+	seen := make(map[int64]struct{})
+	for _, questID := range completedQuestIDs {
+		for _, successor := range c.Successors(questID) {
+			if _, duplicate := seen[successor.ID]; duplicate {
+				continue
+			}
+			seen[successor.ID] = struct{}{}
+			if normalizeQuestTag(successor.Grade) != "epic" ||
+				successor.LevelMin <= character.Level {
+				continue
+			}
+			atGate := character
+			atGate.Level = successor.LevelMin
+			if !c.definitionAcceptable(successor, atGate, completed, active, answers, true) {
+				continue
+			}
+			if targetLevel != 0 && targetLevel != successor.LevelMin {
+				return 0, false
+			}
+			targetLevel = successor.LevelMin
+		}
+	}
+	return targetLevel, targetLevel > 0
+}