docs: add OpenFang alignment analysis report

- Create new openfang-alignment-analysis.md based on OpenFang (not OpenClaw)
- Update deviation-analysis.md with deprecation notice
- Update archive README with migration rationale
- Add new report to knowledge-base index

Key insights:
- Project successfully migrated from OpenClaw to OpenFang
- Alignment improved from 25% to 80%
- Core features (Gateway, Hands, Skills, Channels) all integrated
- Remaining gaps mostly due to OpenFang API not yet implemented

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/archive/openclaw-legacy/deviation-analysis.md

@@ -1,7 +1,25 @@
 # ZCLAW 偏离分析报告
 
-**日期**: 2026-03-11  
+> ⚠️ **注意**: 此报告已过时。项目已从 OpenClaw 迁移到 OpenFang。
+>
+> 请查看最新的对齐分析报告：
+> - [OpenFang 对齐分析报告](../knowledge-base/openfang-alignment-analysis.md)
+
+**日期**: 2026-03-11
 **目的**: 对标 QClaw / AutoClaw / OpenClaw，分析当前项目是否偏离初衷
+**状态**: 📦 已归档 - 项目已迁移到 OpenFang
+
+---
+
+## 迁移说明
+
+项目已于 2026-03-14 从 OpenClaw 迁移到 OpenFang，原因：
+1. 架构统一为 Rust
+2. 性能大幅提升（启动 180ms vs 5.98s，内存 40MB vs 394MB）
+3. 安全性更强（16 层纵深防御 vs 3 层）
+4. OpenFang 本身基于 OpenClaw 开发，功能兼容
+
+以下为原报告内容，仅供参考。
 
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