Fix TypeScript errors, remove non-functional Empty button, right-align Network Block toggle

- Fix CameraEntropy and DiceEntropy import errors
- Fix unused variable warnings in App.tsx and Header.tsx
- Remove non-functional Empty storage button from Header
- Right-align Network Block toggle button with flex-1 spacer
- Add NetworkBlockBadge component file

src/index.css

@@ -2,6 +2,19 @@
 @tailwind components;
 @tailwind utilities;
 
+/* Prevent iOS zoom on input focus by ensuring font-size >= 16px */
+input, textarea, select {
+  font-size: 16px !important; /* iOS won't zoom if 16px or larger */
+}
+
+/* For smaller text, use transform scale instead */
+.text-xs input,
+.text-xs textarea {
+  font-size: 16px !important;
+  transform: scale(0.75);
+  transform-origin: left top;
+}
+
 /* Mobile-first: constrain to phone width on all devices */
 #root {
   max-width: 448px;
@@ -32,4 +45,25 @@ body {
 code {
   font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
     monospace;
-}
+}
+
+/* Sensitive data blur protection */
+.blur-sensitive {
+  filter: blur(6px);
+  transition: filter 0.2s ease;
+  cursor: pointer;
+  user-select: none;
+}
+
+.blur-sensitive:hover,
+.blur-sensitive:focus {
+  filter: blur(0);
+  user-select: text;
+}
+
+/* Mobile: tap to reveal */
+@media (pointer: coarse) {
+  .blur-sensitive:active {
+    filter: blur(0);
+  }
+}