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/folder-tree.mjs

@@ -0,0 +1,27 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const FolderTree = createLucideIcon("FolderTree", [
+  [
+    "path",
+    {
+      d: "M13 10h7a1 1 0 0 0 1-1V6a1 1 0 0 0-1-1h-2.5a1 1 0 0 1-.8-.4l-.9-1.2A1 1 0 0 0 15 3h-2a1 1 0 0 0-1 1v5a1 1 0 0 0 1 1Z",
+      key: "10jzg2"
+    }
+  ],
+  [
+    "path",
+    {
+      d: "M13 21h7a1 1 0 0 0 1-1v-3a1 1 0 0 0-1-1h-2.88a1 1 0 0 1-.9-.55l-.44-.9a1 1 0 0 0-.9-.55H13a1 1 0 0 0-1 1v5a1 1 0 0 0 1 1Z",
+      key: "1b9nqm"
+    }
+  ],
+  ["path", { d: "M3 3v2c0 1.1.9 2 2 2h3", key: "1wqwis" }],
+  ["path", { d: "M3 3v13c0 1.1.9 2 2 2h3", key: "1bqeom" }]
+]);
+
+export { FolderTree as default };
+//# sourceMappingURL=folder-tree.mjs.map