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/syringe.mjs

@@ -0,0 +1,23 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Syringe = createLucideIcon("Syringe", [
+  ["path", { d: "m18 2 4 4", key: "22kx64" }],
+  ["path", { d: "m17 7 3-3", key: "1w1zoj" }],
+  [
+    "path",
+    {
+      d: "M19 9 8.7 19.3c-1 1-2.5 1-3.4 0l-.6-.6c-1-1-1-2.5 0-3.4L15 5",
+      key: "1exhtz"
+    }
+  ],
+  ["path", { d: "m9 11 4 4", key: "rovt3i" }],
+  ["path", { d: "m5 19-3 3", key: "59f2uf" }],
+  ["path", { d: "m14 4 6 6", key: "yqp9t2" }]
+]);
+
+export { Syringe as default };
+//# sourceMappingURL=syringe.mjs.map