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/banknote.mjs

@@ -0,0 +1,17 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Banknote = createLucideIcon("Banknote", [
+  [
+    "rect",
+    { width: "20", height: "12", x: "2", y: "6", rx: "2", key: "9lu3g6" }
+  ],
+  ["circle", { cx: "12", cy: "12", r: "2", key: "1c9p78" }],
+  ["path", { d: "M6 12h.01M18 12h.01", key: "113zkx" }]
+]);
+
+export { Banknote as default };
+//# sourceMappingURL=banknote.mjs.map