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/user-square-2.mjs

@@ -0,0 +1,17 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const UserSquare2 = createLucideIcon("UserSquare2", [
+  ["path", { d: "M18 21a6 6 0 0 0-12 0", key: "kaz2du" }],
+  ["circle", { cx: "12", cy: "11", r: "4", key: "1gt34v" }],
+  [
+    "rect",
+    { width: "18", height: "18", x: "3", y: "3", rx: "2", key: "afitv7" }
+  ]
+]);
+
+export { UserSquare2 as default };
+//# sourceMappingURL=user-square-2.mjs.map