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/battery.mjs

@@ -0,0 +1,24 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Battery = createLucideIcon("Battery", [
+  [
+    "rect",
+    {
+      width: "16",
+      height: "10",
+      x: "2",
+      y: "7",
+      rx: "2",
+      ry: "2",
+      key: "1w10f2"
+    }
+  ],
+  ["line", { x1: "22", x2: "22", y1: "11", y2: "13", key: "4dh1rd" }]
+]);
+
+export { Battery as default };
+//# sourceMappingURL=battery.mjs.map