Finalize task-020 reports navigation and stability fixes

frontend/static/favicon.svg

@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <defs>
+    <linearGradient id="bg" x1="10%" y1="0%" x2="90%" y2="100%">
+      <stop offset="0%" stop-color="#0EA5E9" />
+      <stop offset="45%" stop-color="#06B6D4" />
+      <stop offset="100%" stop-color="#2563EB" />
+    </linearGradient>
+    <linearGradient id="stack" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" stop-color="#FFFFFF" />
+      <stop offset="100%" stop-color="#E2E8F0" />
+    </linearGradient>
+  </defs>
+  <rect x="4" y="4" width="56" height="56" rx="16" fill="url(#bg)" />
+  <path d="M32 16 14 24l18 8 18-8-18-8Z" fill="url(#stack)" opacity="0.98" />
+  <path d="m14 33 18 8 18-8" fill="none" stroke="#F8FAFC" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" />
+  <path d="m14 42 18 8 18-8" fill="none" stroke="#F8FAFC" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" opacity="0.92" />
+  <path d="M49 14v6M46 17h6" stroke="#F8FAFC" stroke-width="2.2" stroke-linecap="round" />
+</svg>