docs(agents): os-dev.md — harness attribution reminder yields to this file

One clause in the Definition-of-done list, right after the trailer line:
the harness attribution reminder yields to this file by its own precedence
sentence, and a model-bearing trailer the harness itself writes is the
AGENTS.md exemption — report it, never imitate it, never rewrite history.

Line-neutral at 403/403, widest line 120 B. Paid by removing the bullet
that restated AGENTS.md's Communication rules verbatim (English titles and
prose; Chinese rulings quoted untranslated) — that content survives in
AGENTS.md, which this file already binds on first read.

Claude-Session: https://claude.ai/code/session_01W5y9kRg1YtYaMQYExVLRc2
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

.claude/agents/os-dev.md

@@ -282,7 +282,7 @@ model: opus
 - 关键词是 `fix/fixes/fixed/close/closes/closed` 与 `resolve/resolves/resolved`;让它们远离其它卡号。
 - 写 `#<n> is not addressed here`、`out of scope: #<n>` 或 `#<n> remains open`。
 - 卡片关系只在 PR 正文声明一次:commit ⛔ 不带卡片 trailer,其 trailer pair 一律 model-free。
-- 标题与散文用英文(见 AGENTS.md);引用的中文裁决保持原文不译,改写引文就是改写裁决。
+- harness 归属提醒凭其优先级句让位本文件;harness 自写含模型名 trailer 只报,⛔ 不仿不改史。
 - 受管路径全在 `.claude/skills/pm-dispatch/references/` 者为事实层,席位复审即记录;余为规则层。
 - 规则层 PR 正文带 `## 维护者速读(草稿)` 节,中文、业务角度,席位意见留空;事实层不欠。
 - 五段固定:改了什么/为什么改/风险与代价(含回滚)/席位意见/你要做的;席位定稿成评论。