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/math-intrinsics/constants/maxArrayLength.d.ts

@@ -0,0 +1,3 @@
+declare const MAX_ARRAY_LENGTH: 4294967295;
+
+export = MAX_ARRAY_LENGTH;

node_modules/math-intrinsics/constants/maxArrayLength.js

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+'use strict';
+
+/** @type {import('./maxArrayLength')} */
+module.exports = 4294967295; // Math.pow(2, 32) - 1;

node_modules/math-intrinsics/constants/maxSafeInteger.d.ts

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+declare const MAX_SAFE_INTEGER: 9007199254740991;
+
+export = MAX_SAFE_INTEGER;

node_modules/math-intrinsics/constants/maxSafeInteger.js

@@ -0,0 +1,5 @@
+'use strict';
+
+/** @type {import('./maxSafeInteger')} */
+// eslint-disable-next-line no-extra-parens
+module.exports = /** @type {import('./maxSafeInteger')} */ (Number.MAX_SAFE_INTEGER) || 9007199254740991; // Math.pow(2, 53) - 1;

node_modules/math-intrinsics/constants/maxValue.d.ts

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+declare const MAX_VALUE: 1.7976931348623157e+308;
+
+export = MAX_VALUE;

node_modules/math-intrinsics/constants/maxValue.js

@@ -0,0 +1,5 @@
+'use strict';
+
+/** @type {import('./maxValue')}  */
+// eslint-disable-next-line no-extra-parens
+module.exports = /** @type {import('./maxValue')}  */ (Number.MAX_VALUE) || 1.7976931348623157e+308;