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/unfold-horizontal.mjs

@@ -0,0 +1,19 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const UnfoldHorizontal = createLucideIcon("UnfoldHorizontal", [
+  ["path", { d: "M16 12h6", key: "15xry1" }],
+  ["path", { d: "M8 12H2", key: "1jqql6" }],
+  ["path", { d: "M12 2v2", key: "tus03m" }],
+  ["path", { d: "M12 8v2", key: "1woqiv" }],
+  ["path", { d: "M12 14v2", key: "8jcxud" }],
+  ["path", { d: "M12 20v2", key: "1lh1kg" }],
+  ["path", { d: "m19 15 3-3-3-3", key: "wjy7rq" }],
+  ["path", { d: "m5 9-3 3 3 3", key: "j64kie" }]
+]);
+
+export { UnfoldHorizontal as default };
+//# sourceMappingURL=unfold-horizontal.mjs.map