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/mail-question.mjs

@@ -0,0 +1,27 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const MailQuestion = createLucideIcon("MailQuestion", [
+  [
+    "path",
+    {
+      d: "M22 10.5V6a2 2 0 0 0-2-2H4a2 2 0 0 0-2 2v12c0 1.1.9 2 2 2h12.5",
+      key: "e61zoh"
+    }
+  ],
+  ["path", { d: "m22 7-8.97 5.7a1.94 1.94 0 0 1-2.06 0L2 7", key: "1ocrg3" }],
+  [
+    "path",
+    {
+      d: "M18 15.28c.2-.4.5-.8.9-1a2.1 2.1 0 0 1 2.6.4c.3.4.5.8.5 1.3 0 1.3-2 2-2 2",
+      key: "7z9rxb"
+    }
+  ],
+  ["path", { d: "M20 22v.01", key: "12bgn6" }]
+]);
+
+export { MailQuestion as default };
+//# sourceMappingURL=mail-question.mjs.map