fix: prevent asset conflicts between React and Grid.js versions

Add coexistence checks to all enqueue methods to prevent loading
both React and Grid.js assets simultaneously.

Changes:
- ReactAdmin.php: Only enqueue React assets when ?react=1
- Init.php: Skip Grid.js when React active on admin pages
- Form.php, Coupon.php, Access.php: Restore classic assets when ?react=0
- Customer.php, Product.php, License.php: Add coexistence checks

Now the toggle between Classic and React versions works correctly.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

node_modules/globjoin/CHANGELOG.md

@@ -0,0 +1,14 @@
+## globjoin changelog
+
+### 2016/02/16 - 0.1.4
+
+* NPM: Remove accidental dependency.
+
+### 2016/02/15 - 0.1.3
+
+* Bug Fix: Should use Array.prototype.slice().
+* Misc: Remove unused test fixtures.
+
+### 2015/12/24 - 0.1.2
+
+First Release

node_modules/globjoin/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2016 amobiz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

node_modules/globjoin/README.md

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+# globjoin
+
+Join paths and globs.
+
+[![MIT](http://img.shields.io/badge/license-MIT-brightgreen.svg)](https://github.com/amobiz/globjoin/blob/master/LICENSE) [![npm version](https://badge.fury.io/js/globjoin.svg)](http://badge.fury.io/js/globjoin) [![David Dependency Badge](https://david-dm.org/amobiz/globjoin.svg)](https://david-dm.org/amobiz/globjoin)
+
+[![NPM](https://nodei.co/npm/globjoin.png?downloads=true&downloadRank=true&stars=true)](https://nodei.co/npm/globjoin.png?downloads=true&downloadRank=true&stars=true) [![NPM](https://nodei.co/npm-dl/globjoin.png?months=6&height=3)](https://nodei.co/npm/globjoin/)
+
+## Install
+``` bash
+$ npm install globjoin
+```
+
+## API
+
+### `globjoin(globs...)`
+Join paths and globs.
+
+Like Node's [path.join()](https://nodejs.org/api/path.html#path_path_join_path1_path2) that join all arguments together and normalize the resulting path, `globjoin` takes arbitrary number of paths and/or arrays of paths, join them together and take care of negative globs.
+#### Context
+Don't care.
+#### Parameters
+##### `paths/globs`
+The paths/globs or arrays of paths/globs to join.
+#### Returns
+The result glob, or array of globs if any of paths/globs are array.
+#### Example
+``` javascript
+var join = require('globjoin');
+var globs1 = join(__dirname, ['**/*.js', '!**/test*.js']);
+var globs2 = join('test', 'fixture', 'app', ['views', '!services'], ['**/*', '!*.{js,json,coffee,ts}']);
+```
+
+Check out test for more examples.
+
+## Issues
+
+[Issues](https://github.com/amobiz/globjoin/issues)
+
+## Test
+
+``` bash
+$ npm test
+```
+
+## Changelog
+
+[Changelog](./CHANGELOG.md)
+
+## License
+MIT
+
+## Author
+[Amobiz](https://github.com/amobiz)

node_modules/globjoin/index.js

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+'use strict';
+
+var Path = require('path');
+var slice = Array.prototype.slice;
+
+function join(/* globs */) {
+	var args;
+
+	args = slice.call(arguments, 0);
+	return args.reduce(function (result, globs) {
+		return _apply(result, function (path) {
+			return _apply(globs, function (glob) {
+				return _join(path, glob);
+			});
+		});
+	}, '');
+}
+
+function _apply(values, fn) {
+	if (Array.isArray(values)) {
+		return values.reduce(function (result, value) {
+			return result.concat(fn(value));
+		}, []);
+	}
+	return fn(values);
+}
+
+function _join(path, glob) {
+	var negative, positive;
+
+	if (glob[0] === '!') {
+		positive = glob.substr(1);
+		if (path[0] === '!') {
+			negative = '';
+		} else {
+			negative = '!';
+		}
+		return negative + Path.join(path, positive);
+	}
+	return Path.join(path, glob);
+}
+
+module.exports = join;

node_modules/globjoin/package.json

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+{
+  "name": "globjoin",
+  "version": "0.1.4",
+  "description": "Join paths and globs.",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/amobiz/globjoin.git"
+  },
+  "scripts": {
+    "test": "mocha"
+  },
+  "keywords": [
+    "array",
+    "glob",
+    "glob join",
+    "globbing",
+    "multiple",
+    "negative glob",
+    "path",
+    "path join",
+    "patterns",
+    "wildcard"
+  ],
+  "author": "Amobiz",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/amobiz/globjoin/issues"
+  },
+  "homepage": "https://github.com/amobiz/globjoin",
+  "devDependencies": {
+    "mocha": "^2.3.4",
+    "mocha-cases": "^0.1.4"
+  },
+  "dependencies": {
+  }
+}