Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/lucide-react/dist/esm/icons/popsicle.mjs

@@ -0,0 +1,19 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Popsicle = createLucideIcon("Popsicle", [
+  [
+    "path",
+    {
+      d: "M18.6 14.4c.8-.8.8-2 0-2.8l-8.1-8.1a4.95 4.95 0 1 0-7.1 7.1l8.1 8.1c.9.7 2.1.7 2.9-.1Z",
+      key: "1o68ps"
+    }
+  ],
+  ["path", { d: "m22 22-5.5-5.5", key: "17o70y" }]
+]);
+
+export { Popsicle as default };
+//# sourceMappingURL=popsicle.mjs.map