docs(architecture): remove closure ledger

Author: jxxghp

docs/architecture-overview.md

@@ -704,9 +704,6 @@ flowchart LR
   物理文件仍是稳定入口的，不应为了目录规整新增“自己映射自己”的别名，也不应在 canonical 包中
   保留多余导出。
 
-当前架构现状差距、优化点与建议实施顺序见
-[`docs/refactor/backend-architecture-review.md`](refactor/backend-architecture-review.md)。
-
 ---
 
 ## 附录：相关文档索引
@@ -722,5 +719,4 @@ flowchart LR
 | [`docs/subscribe-lifecycle.md`](subscribe-lifecycle.md) | 订阅生命周期详解 |
 | [`docs/mcp-api.md`](mcp-api.md) | MCP 工具端点说明 |
 | [`docs/v3t-runtime-governance.md`](v3t-runtime-governance.md) | V3/V3t 运行依赖、故障恢复、GIL 可观测性与兼容退场门禁 |
-| [`docs/refactor/backend-architecture-review.md`](refactor/backend-architecture-review.md) | 2026-08 架构评审：现状差距、优化点与实施顺序 |
 | [`docs/adr/0007-background-action-reliability.md`](adr/0007-background-action-reliability.md) | 后台动作 E0–E3 可靠性分级与完成语义决策 |