docs(logo): 归档 logo 草稿、v1–v4 探索稿与真实印章调研

v1 为 Codex 精细化的草稿 1；v2–v4 为 SVG 程序化模拟印泥质感的尝试。调研结论：印泥质感本质上是位图，改用位图生成后矢量化。 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-11-02 20:28:18 +08:00
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--- a/docs/design/logo/archive/v1/svg/favicon-16-a.svg
+++ b/docs/design/logo/archive/v1/svg/favicon-16-a.svg
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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><rect width="16" height="16" rx="2" fill="#D2282E"/><path d="M2.5 8.2 5 5.8l2.2 2.3 4.7-5 2.4 2.3-7 7.4z" fill="#fff"/></svg>
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				`<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><rect width="16" height="16" rx="2" fill="#D2282E"/><path d="M2.5 8.2 5 5.8l2.2 2.3 4.7-5 2.4 2.3-7 7.4z" fill="#fff"/></svg>`