docs(charter): move both baselines to 638c3a8

638c3a8 added one marker line to the top of six source files and re-based all
144 line anchors in the same commit, so that commit is the baseline for both
the code anchors and the document section refs. e0882c7 and b70d188 are no
longer valid baselines.

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** `b70d188`（src/ 行号锚点）｜`e0882c7`（文档）。
+> **代码基线** `638c3a8`（src/ 行号锚点）｜`638c3a8`（文档）。
 
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