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/calendar-search.mjs

@@ -0,0 +1,23 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const CalendarSearch = createLucideIcon("CalendarSearch", [
+  [
+    "path",
+    {
+      d: "M21 12V6a2 2 0 0 0-2-2H5a2 2 0 0 0-2 2v14c0 1.1.9 2 2 2h7.5",
+      key: "18ncp8"
+    }
+  ],
+  ["path", { d: "M16 2v4", key: "4m81vk" }],
+  ["path", { d: "M8 2v4", key: "1cmpym" }],
+  ["path", { d: "M3 10h18", key: "8toen8" }],
+  ["path", { d: "M18 21a3 3 0 1 0 0-6 3 3 0 0 0 0 6v0Z", key: "mgbru4" }],
+  ["path", { d: "m22 22-1.5-1.5", key: "1x83k4" }]
+]);
+
+export { CalendarSearch as default };
+//# sourceMappingURL=calendar-search.mjs.map