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/hard-drive-download.mjs

@@ -0,0 +1,19 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const HardDriveDownload = createLucideIcon("HardDriveDownload", [
+  ["path", { d: "M12 2v8", key: "1q4o3n" }],
+  ["path", { d: "m16 6-4 4-4-4", key: "6wukr" }],
+  [
+    "rect",
+    { width: "20", height: "8", x: "2", y: "14", rx: "2", key: "w68u3i" }
+  ],
+  ["path", { d: "M6 18h.01", key: "uhywen" }],
+  ["path", { d: "M10 18h.01", key: "h775k" }]
+]);
+
+export { HardDriveDownload as default };
+//# sourceMappingURL=hard-drive-download.mjs.map