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/bookmark-plus.mjs

@@ -0,0 +1,17 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const BookmarkPlus = createLucideIcon("BookmarkPlus", [
+  [
+    "path",
+    { d: "m19 21-7-4-7 4V5a2 2 0 0 1 2-2h10a2 2 0 0 1 2 2v16z", key: "1fy3hk" }
+  ],
+  ["line", { x1: "12", x2: "12", y1: "7", y2: "13", key: "1cppfj" }],
+  ["line", { x1: "15", x2: "9", y1: "10", y2: "10", key: "1gty7f" }]
+]);
+
+export { BookmarkPlus as default };
+//# sourceMappingURL=bookmark-plus.mjs.map