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/parking-square-off.mjs

@@ -0,0 +1,22 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const ParkingSquareOff = createLucideIcon("ParkingSquareOff", [
+  [
+    "path",
+    {
+      d: "M3.6 3.6A2 2 0 0 1 5 3h14a2 2 0 0 1 2 2v14a2 2 0 0 1-.59 1.41",
+      key: "9l1ft6"
+    }
+  ],
+  ["path", { d: "M3 8.7V19a2 2 0 0 0 2 2h10.3", key: "17knke" }],
+  ["path", { d: "m2 2 20 20", key: "1ooewy" }],
+  ["path", { d: "M13 13a3 3 0 1 0 0-6H9v2", key: "uoagbd" }],
+  ["path", { d: "M9 17v-2.3", key: "1jxgo2" }]
+]);
+
+export { ParkingSquareOff as default };
+//# sourceMappingURL=parking-square-off.mjs.map