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/eslint-plugin-import/docs/rules/no-named-export.md

@@ -0,0 +1,79 @@
+# import/no-named-export
+
+<!-- end auto-generated rule header -->
+
+Prohibit named exports. Mostly an inverse of [`no-default-export`].
+
+[`no-default-export`]: ./no-default-export.md
+
+## Rule Details
+
+The following patterns are considered warnings:
+
+```javascript
+// bad1.js
+
+// There is only a single module export and it's a named export.
+export const foo = 'foo';
+```
+
+```javascript
+// bad2.js
+
+// There is more than one named export in the module.
+export const foo = 'foo';
+export const bar = 'bar';
+```
+
+```javascript
+// bad3.js
+
+// There is more than one named export in the module.
+const foo = 'foo';
+const bar = 'bar';
+export { foo, bar }
+```
+
+```javascript
+// bad4.js
+
+// There is more than one named export in the module.
+export * from './other-module'
+```
+
+```javascript
+// bad5.js
+
+// There is a default and a named export.
+export const foo = 'foo';
+const bar = 'bar';
+export default 'bar';
+```
+
+The following patterns are not warnings:
+
+```javascript
+// good1.js
+
+// There is only a single module export and it's a default export.
+export default 'bar';
+```
+
+```javascript
+// good2.js
+
+// There is only a single module export and it's a default export.
+const foo = 'foo';
+export { foo as default }
+```
+
+```javascript
+// good3.js
+
+// There is only a single module export and it's a default export.
+export default from './other-module';
+```
+
+## When Not To Use It
+
+If you don't care if named imports are used, or if you prefer named imports over default imports.