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/euro.mjs

@@ -0,0 +1,20 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Euro = createLucideIcon("Euro", [
+  ["path", { d: "M4 10h12", key: "1y6xl8" }],
+  ["path", { d: "M4 14h9", key: "1loblj" }],
+  [
+    "path",
+    {
+      d: "M19 6a7.7 7.7 0 0 0-5.2-2A7.9 7.9 0 0 0 6 12c0 4.4 3.5 8 7.8 8 2 0 3.8-.8 5.2-2",
+      key: "1j6lzo"
+    }
+  ]
+]);
+
+export { Euro as default };
+//# sourceMappingURL=euro.mjs.map