kb: expand authorized lab coverage and intel automation

07-framework-security/frameworks/echo/README.md

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+# Echo
+
+> `LAB ONLY` | `AUTHORIZED TARGETS ONLY`
+
+- 分类: `frameworks`
+- 覆盖层级: `rolling-24m`
+- Advisory 模式: core
+- 输出目录: `07-framework-security/frameworks/echo`
+- 修复主题: proxy-trust-boundary, token-cookie-storage
+- 适用目标类型: `lab-local, lab-public, authorized-third-party`
+- 是否允许公网验证: `yes, but only for owned or authorized targets`
+- 最小化验证方式: 最小化验证、只读探测、可审计回显、受控注入。
+- 禁止场景: 无归属证明或无明确授权的公网目标；知名公共网站或与测试无关的第三方资产；会造成持久破坏、数据越权下载或不可回滚影响的动作
+
+- 自动索引: [INDEX.md](/Users/x/websafe/07-framework-security/frameworks/echo/INDEX.md)
+- Registry 统计: [echo.json](/Users/x/websafe/08-threat-intel/registry/systems/echo.json)