update static files

static/ninja/favicon.svg

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   version="1.1"
+   width="72"
+   height="72"
+   id="svg1"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <style
+     id="style1">
+    path {
+      fill: black;
+    }
+    @media (prefers-color-scheme: dark) {
+      path {
+        fill: white;
+      }
+    }
+  </style>
+  <path
+     id="path3-3"
+     style="stroke-width:7.26736"
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