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/spell-check-2.mjs

@@ -0,0 +1,20 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const SpellCheck2 = createLucideIcon("SpellCheck2", [
+  ["path", { d: "m6 16 6-12 6 12", key: "1b4byz" }],
+  ["path", { d: "M8 12h8", key: "1wcyev" }],
+  [
+    "path",
+    {
+      d: "M4 21c1.1 0 1.1-1 2.3-1s1.1 1 2.3 1c1.1 0 1.1-1 2.3-1 1.1 0 1.1 1 2.3 1 1.1 0 1.1-1 2.3-1 1.1 0 1.1 1 2.3 1 1.1 0 1.1-1 2.3-1",
+      key: "8mdmtu"
+    }
+  ]
+]);
+
+export { SpellCheck2 as default };
+//# sourceMappingURL=spell-check-2.mjs.map