1.11 修订：VersionResolver 改单链 4 层 fallback，删除双子树合并算法（契约影响）

【契约影响】
- RemoteConfig 模型：Agent 节点移除 channellist 字段（线上 JSON 实际只挂 gamelist；此前误读 chulishengji 引入的 channellist 是空 schema）
- VersionResolver 解析算法：从"双子树 + 字段级合并"改为"agentlist → gamelist → channellist → marketlist 单链 4 层 fallback"，行为按 daoqi NewRootVC.m:689-810 主路径
- 对外 API ResolvedVersion / resolve(config:agentId:channelId:marketId:gameId:) 签名零变化，WebContainerViewController / SubGameViewController 调用点未动

【设计要点】
- 4 节点类型 conform 同一 private protocol RemoteConfigNode
- 5 字段共用 pickString / pickInt 两个倒序 fallback 工具，不允许为某字段单独写 if 链
- buildChain 集中处理"任一层 id 不匹配立刻截断"语义

【文档同步】
- Design §6.3.2 整段重写
- Plan ADR-008 顶部追加"第三轮修订（2026-06-27）"小节 + 第二轮误读复盘
- Plan ADR-008-D 替换为单链 4 层算法说明 + 保留修订史
- Plan §1.11 / ADR-008-I / 最后更新日期 / Verification-Checklist L73 同步

参考契约章节：docs/H5-Native-Implementation-Design.md §6.3.2、docs/Development-Plan.md ADR-008-D
BuildProject 通过。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ylgamehall/Source/Network/RemoteConfigClient.swift

@@ -8,7 +8,7 @@
 
 import Foundation
 
-// MARK: - Codable 模型（三级嵌套：agent → channel → market；agent 子树另有 gamelist 副路径）
+// MARK: - Codable 模型（单链 4 层嵌套：agent → game → channel → market）
 
 nonisolated public struct RemoteConfig: Codable, Sendable {
     public let showmessage: String?
@@ -22,7 +22,6 @@ nonisolated public struct Agent: Codable, Sendable {
     public let appDownload: String?
     public let gameVersion: String?
     public let gameZip: String?
-    public let channellist: [Channel]?
     public let gamelist: [Game]?
 
     public init(from decoder: any Decoder) throws {
@@ -33,12 +32,11 @@ nonisolated public struct Agent: Codable, Sendable {
         appDownload = try c.decodeFlexibleStringIfPresent(forKey: .appDownload)
         gameVersion = try c.decodeFlexibleStringIfPresent(forKey: .gameVersion)
         gameZip     = try c.decodeFlexibleStringIfPresent(forKey: .gameZip)
-        channellist = try c.decodeIfPresent([Channel].self, forKey: .channellist)
         gamelist    = try c.decodeIfPresent([Game].self, forKey: .gamelist)
     }
 
     private enum CodingKeys: String, CodingKey {
-        case agentid, showmessage, channellist, gamelist
+        case agentid, showmessage, gamelist
         case appVersion, appDownload, gameVersion, gameZip
     }
 }