docs(i18n): record the v1-vs-v2 briefing A/B in the Agent Note

Head-to-head replay of the same ten historical examples, both arms in
one time window with identical prompts and pairwise blind judging:
prose quality and cost at parity (stylistic margins only); the shipped
briefing wins two objective outcomes — code-fence-only examples land
byte-identical to the human-reviewed updates with zero model tokens,
and the flagged first-occurrence move reproduces the human-reviewed
gloss relocation the section-only form leaves as a contract violation.
Chinese counterpart brought along via the briefed path and the pair
re-recorded.

.agents/notes/implemented/process/2026-07-26-briefed-minimal-translation-updates.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/process/2026-07-26-briefed-minimal-translation-updates.md
-2026-07-26-briefed-minimal-translation-updates.md: 42baedc8d68557bc0d273c5a476806ac480d4afd
-2026-07-26-briefed-minimal-translation-updates.zh.md: 18653fe1097f4028a0671b6d15d1982ad137f47a
+2026-07-26-briefed-minimal-translation-updates.md: 63f25d5c36caecba435e9192534e0b494e1e0105
+2026-07-26-briefed-minimal-translation-updates.zh.md: 17cf2f895b187fb794e691c2b14d6e0bff78363d

.agents/notes/implemented/process/2026-07-26-briefed-minimal-translation-updates.md

@@ -26,6 +26,8 @@ The decision followed a controlled replay of ten real pair updates from this rep
 - On the briefing, a small model performed at parity with the large one, so the update path no longer assumes a frontier translator.
 - Batching three pairs into one subagent showed no reliable saving over three briefed runs and couples unrelated failures; it was rejected.
 
+A second head-to-head replay on the same ten examples compared this note's shipped briefing against its earlier section-only form (no unit tier, no computed mechanical path, counterpart-only context, no first-occurrence tracking). Prose quality and cost were at parity — pairwise blind verdicts split with only stylistic margins — and the shipped form won on two objective outcomes: the two code-fence-only examples were completed byte-identical to the human-reviewed historical updates in under a second with no model tokens, and on the example whose edit moved a term's document-wide first occurrence, the shipped briefing's flagged move reproduced the human-reviewed gloss relocation while the section-only form left a 首次出现 violation for review to catch.
+
 ## Alternatives considered
 
 - **Keep the workflow, just scope the gate** — the gate scan was the smaller cost; the corpus loads and archaeology dominated. Scoping alone would have left the ~3x overhead in place.

.agents/notes/implemented/process/2026-07-26-briefed-minimal-translation-updates.zh.md

@@ -26,6 +26,8 @@ Status: implemented
 - 以简报为输入，小模型的表现与大模型持平，因此更新路径不再假定翻译必须由前沿模型完成。
 - 把三对文档合并给同一个 subagent，相比三次各自带简报的运行没有可靠的节省，还把互不相关的失败耦合在一起；该方案被否决。
 
+在同样这十个样例上进行的第二次正面对比回放，把本文最终交付的简报与其早前仅按章节的形态（没有单元层级、没有直接算出的机械路径、上下文只含对侧文件、不跟踪首次出现）相对照。行文质量与成本两相持平（两两盲评裁定各有胜负，差距仅在文风），而最终交付的形态在两项客观结果上胜出：两个只涉及围栏代码块的样例在一秒之内完成且不消耗任何模型 token，产出与经人工评审的历史更新逐字节一致；而在那个编辑使某术语在整篇文档中的首次出现发生移位的样例上，最终交付的简报所标记的移位复现了经人工评审的括注迁移，仅按章节的形态则留下一处「首次出现」违例，留待评审去捕捉。
+
 ## 曾考虑的替代方案
 
 - **保留原工作流，只让门禁支持按对检查**：门禁扫描本是较小的开销，大头在语料加载与翻查历史。只收窄检查范围，约 3 倍的开销仍会原地保留。