docs: bump verification baselines to b2dbe7c

Four doc headers reference the code commit whose line anchors they were
read against. The trait deletion moved src/channel.rs (361 -> 340) and
src/domain.rs (16 -> 10), so the anchors are re-based to that commit.

GATE-DOCS: PASS 5/5 (VALIDATION 0, TABLE 0, ANCHOR 248 line-refs / 0,
SECTION-REF 216 / 0, SIZE CHECK 0).

docs/charter.md

@@ -9,7 +9,7 @@
 >
 > 三者冲突时：**可核对事实以 `reference.md` 为准，项目约束以本文件为准，质量规则以 `../AGENTS.md` 为准。**
 
-> **代码基线** `2da11b9`（src/ 行号锚点）｜`2da11b9`（文档）。
+> **代码基线** `b2dbe7c`（src/ 行号锚点）｜`b2dbe7c`（文档）。
 
 ---
 

docs/reference.md

@@ -3,7 +3,7 @@
 > **This file is the single source of truth for verifiable facts.**
 > When any other document disagrees with this one, this one wins.
 >
-> **Verified against commit `2da11b9`.** Line numbers in this file were read from that
+> **Verified against commit `b2dbe7c`.** Line numbers in this file were read from that
 > commit with the working tree clean.
 >
 > **Maintenance responsibility.** Any change to the public API of `src/config.rs`,

docs/retired.md

@@ -4,7 +4,7 @@
 > 目的是**留原因、防复发**——以后看到这些名字，能立刻知道该用什么。
 > 当前真实实现与可核对事实见 `docs/reference.md`；缺口与阻塞见 `docs/roadmap.md`；当前设计见 `docs/design.md`。
 > 本文**没有行动项**。若某条变成要做的事，去 `docs/roadmap.md` 登记，本文条目保留为决策依据。
-> 验证基线：`2da11b9`。
+> 验证基线：`b2dbe7c`。
 
 ---
 

docs/roadmap.md

@@ -2,7 +2,7 @@
 
 > 只放**缺口**、**阻塞**与**阶段目标**。已实现能力见 `README.md`、`docs/design.md`、`docs/deployment.md`；
 > 可核对的事实（Redis 键、TTL、错误码、路由）见 `docs/reference.md`。
-> 验证基线：`2da11b9`。门禁命令见 `docs/deployment.md` 的 Gate 一节；当前 `GATE-P0` 全绿（61 passed / 0 failed / 1 ignored）。
+> 验证基线：`b2dbe7c`。门禁命令见 `docs/deployment.md` 的 Gate 一节；当前 `GATE-P0` 全绿（61 passed / 0 failed / 1 ignored）。
 
 ## 阶段目标