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/piggy-bank.mjs

@@ -0,0 +1,20 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const PiggyBank = createLucideIcon("PiggyBank", [
+  [
+    "path",
+    {
+      d: "M19 5c-1.5 0-2.8 1.4-3 2-3.5-1.5-11-.3-11 5 0 1.8 0 3 2 4.5V20h4v-2h3v2h4v-4c1-.5 1.7-1 2-2h2v-4h-2c0-1-.5-1.5-1-2h0V5z",
+      key: "uf6l00"
+    }
+  ],
+  ["path", { d: "M2 9v1c0 1.1.9 2 2 2h1", key: "nm575m" }],
+  ["path", { d: "M16 11h0", key: "k2aug8" }]
+]);
+
+export { PiggyBank as default };
+//# sourceMappingURL=piggy-bank.mjs.map