fix(channel,user): owner 车道只认白名单，堵住群主/伪造 role 冒充主人（裁决 06.4.2/06.4.3/06.4.4）

- 适配器只描述平台身份：qq_obv11 的 owner/admin 一律上报 RoleMember，不再上报 RoleOwner
- session 层唯一判主点只认白名单（owner.yaml Accounts ∪ 每渠道 adminIds），nil 档案 fail-closed 拒绝
- 新增「每渠道管理员层」：channels.json ChannelAccount.adminIds[] → runtimeconfig.AdminIDs → OwnerProfile.SetPlatformAdmins（整体替换语义，热重载后移除的 id 立即失效）
- 组合根接线：启动即播种、面板保存先灌白名单再重载适配器（cmd/cyrene/wire_channels.go + 4 条端到端单测）
- 06.4.3 节流与参与度状态按会话独立计数（ConversationKey 三处统一，空会话 GC）；06.4.4 未知平台主动发言保守默认 1 条/分钟

internal/channel/session/session.go

@@ -12,7 +12,8 @@
 //     matched against the user.OwnerProfile account whitelist. Nothing here reads
 //     message text to infer identity — that is a project red line.
 //   - Proactive push policy: per-platform rules from design/08 §3 (weixin-ilink
-//     24h window, OneBot burst rate limit, telegram/webhook unrestricted).
+//     24h window, OneBot burst rate limit, telegram/webhook unrestricted), with a
+//     conservative strict limit as the default for unknown platforms (裁决 06.4.4).
 //
 // The package is concurrency-safe: the manager guards its cache with an
 // RWMutex and the rate limiter uses its own mutex, so multiple adapters may