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/train.mjs

@@ -0,0 +1,21 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Train = createLucideIcon("Train", [
+  [
+    "rect",
+    { width: "16", height: "16", x: "4", y: "3", rx: "2", key: "1wxw4b" }
+  ],
+  ["path", { d: "M4 11h16", key: "mpoxn0" }],
+  ["path", { d: "M12 3v8", key: "1h2ygw" }],
+  ["path", { d: "m8 19-2 3", key: "13i0xs" }],
+  ["path", { d: "m18 22-2-3", key: "1p0ohu" }],
+  ["path", { d: "M8 15h0", key: "q9eq1f" }],
+  ["path", { d: "M16 15h0", key: "pzrbjg" }]
+]);
+
+export { Train as default };
+//# sourceMappingURL=train.mjs.map