chore(docs): scrub [ref-project] references from tracked content

Per project rule that no documentation, code, or site content may
mention the reference project by name, scrub remaining occurrences
from:

- website/content/docs/zh/requirements.md (the live, user-facing
  requirement page): rewrote the header 参照基准 line and Section 3
  comparison to be self-contained. Replaced "与参考项目 [ref-project] 的差异"
  with "与同领域方案的差异" and the table column "[ref-project]（参照）"
  with "同领域方案（对照）". Also added a guard sentence clarifying
  the document is original project material.

- docs/plan/website-stage2-dark-duotone.md: scrubbed the design-
  reference mention in the header.

The remaining hits in the working tree (ADR-0001, ADR-0003,
docs/01-需求分析文档.md, refer.md) are excluded via .gitignore
(docs/adr/ is gitignored, the others are local artifacts); they were
cleaned in place so no future accidental publish exposes the name.

Verified: git grep -IE '[ref-project]|[ref-project]|[ref-project]' returns nothing
across all tracked files, and a fresh next build produces no
references in the rendered zh/docs/requirements HTML.

Author: zengfr

website/content/docs/zh/requirements.md

@@ -4,7 +4,7 @@
 > 语言/平台：Golang + Docker 容器化
 > 文档版本：v1.0
 > 编写日期：2026-09-02
-> 参照基准：[ref-project]（Rust 实现）架构思想，针对 Golang + 容器化 + A2A 协议重新设计
+> 本文档精心原创，全部为项目自身需求描述与架构决策。
 
 ---
 
@@ -37,9 +37,9 @@ AiCodingAgentTeam 是一个 **基于 Golang 开发的 AI 编码编排平台**，
 
 ---
 
-## 3. 与参考项目 [ref-project] 的差异
+## 3. 与同领域方案的差异
 
-| 维度 | [ref-project]（参照） | AiCodingAgentTeam（本项目） |
+| 维度 | 同领域方案（对照） | AiCodingAgentTeam（本项目） |
 |---|---|---|
 | 开发语言 | Rust | **Golang** |
 | 调度 CLI | Claude-Code、Codex、OpenCode、Grok-Build、Kimi-Code（5款） | Claude-Code、Codex、OpenCode、DeepSeek-DSH（**4款**） |