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/hourglass.mjs

@@ -0,0 +1,27 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Hourglass = createLucideIcon("Hourglass", [
+  ["path", { d: "M5 22h14", key: "ehvnwv" }],
+  ["path", { d: "M5 2h14", key: "pdyrp9" }],
+  [
+    "path",
+    {
+      d: "M17 22v-4.172a2 2 0 0 0-.586-1.414L12 12l-4.414 4.414A2 2 0 0 0 7 17.828V22",
+      key: "1d314k"
+    }
+  ],
+  [
+    "path",
+    {
+      d: "M7 2v4.172a2 2 0 0 0 .586 1.414L12 12l4.414-4.414A2 2 0 0 0 17 6.172V2",
+      key: "1vvvr6"
+    }
+  ]
+]);
+
+export { Hourglass as default };
+//# sourceMappingURL=hourglass.mjs.map