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/construction.mjs

@@ -0,0 +1,22 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Construction = createLucideIcon("Construction", [
+  [
+    "rect",
+    { x: "2", y: "6", width: "20", height: "8", rx: "1", key: "1estib" }
+  ],
+  ["path", { d: "M17 14v7", key: "7m2elx" }],
+  ["path", { d: "M7 14v7", key: "1cm7wv" }],
+  ["path", { d: "M17 3v3", key: "1v4jwn" }],
+  ["path", { d: "M7 3v3", key: "7o6guu" }],
+  ["path", { d: "M10 14 2.3 6.3", key: "1023jk" }],
+  ["path", { d: "m14 6 7.7 7.7", key: "1s8pl2" }],
+  ["path", { d: "m8 6 8 8", key: "hl96qh" }]
+]);
+
+export { Construction as default };
+//# sourceMappingURL=construction.mjs.map