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/json2php/README.md

@@ -0,0 +1,140 @@
+json2php
+========
+
+### Instalation
+
+To install json2php you could clone the project from Github or use NPM to install it.
+
+```bash
+$ npm install json2php
+```
+
+### Usage
+
+Convert JavaScript object/array/string/number/boolean to string that is the corresponding PHP representation.
+
+#### String
+
+When the content is just a string the output will be the same string.
+
+```javascript
+s = json2php('Hello World!')
+// => s = 'Hello World!'
+```
+
+#### Number
+
+Numbers are the same.
+
+```javascript
+s = json2php(123)
+// => s = '123'
+```
+
+#### Boolean
+
+```javascript
+s = json2php( true )
+// => s = 'true'
+```
+
+#### Undefined/Null
+
+`null` and `undefined` are returned as `null`
+
+```javascript
+s = json2php(undefined)
+// => s = 'null'
+```
+
+#### Array
+
+```javascript
+s = json2php([1, 2, 3])
+// => s = 'array(1, 2, 3)'
+```
+
+#### Object
+
+```javascript
+s = json2php({a: 1, b: 2, c: 'text', false: true, undefined: null})
+// => s = "array('a' => 1, 'b' => 2, 'c' => 'text', 'false': true, 'undefined': null)"
+```
+
+#### Non-valid JSON
+
+```javascript
+s = json2php(new Date())
+// => s = "null"
+```
+
+### Pretty printing
+Create custom 'printers' with `json2php.make`: 
+
+```javascript
+const printer = json2php.make({linebreak:'\n', indent:'\t', shortArraySyntax: true})
+printer({one: 3, two: 20, three: [9, 3, 2]})
+
+/* result:.
+[
+	'one' => 3, 
+	'two' => 20, 
+	'set' => [
+		9, 
+		3, 
+		2
+	]
+]
+*/
+```
+
+### For Contributors
+
+#### Tests
+
+To run test we use `mocha` framework.
+
+```bash
+$ npm test
+```
+
+#### CoffeeScript Source
+
+But in any case you will depend on `coffee-script`
+
+```bash
+$ npm run build
+```
+
+### Changelog
+
+#### 0.0.7
+  * Add `shortArraySyntax` to pretty print options
+
+#### 0.0.6
+  * Add pretty print capability via `json2php.make` (thanks to @stokesman)
+
+#### 0.0.5
+  * Update and clean up (thanks to @SumoTTo)
+  * Add boolean type (thanks to @SumoTTo)
+
+#### 0.0.4
+  * Fix for single quotes escaping (thanks to @ksky521)
+
+#### 0.0.3
+  * Fixed the case when non-valid JSON is passed
+  * Fixing the bug with the object section
+
+#### 0.0.2
+  * Adding the package.json to Git repository, also package dependency
+  * Changes into the file structure
+  * Adding CoffeeScript source ( Not finished yet )
+  * Adding Cakefile and task `test`
+  * Adding Mocha for test framework.
+  * Adding `test`, `src`, `lib` directory
+  * Adding tests
+
+#### 0.0.1
+  * Init the project into NPM
+  * module.exports for Node.js
+  * Added json2php into the global scope with global.json2php

node_modules/json2php/lib/json2php.js

@@ -0,0 +1,66 @@
+// Generated by CoffeeScript 2.7.0
+var json2php, make,
+  hasProp = {}.hasOwnProperty;
+
+make = function({linebreak = '', indent = '', shortArraySyntax = false} = {}) {
+  var arrClose, arrOpen, nest, transform;
+  arrOpen = shortArraySyntax ? '[' : 'array(';
+  arrClose = shortArraySyntax ? ']' : ')';
+  nest = {
+    '[object Array]': function(obj, parentIndent) {
+      var i, len, results, value;
+      results = [];
+      for (i = 0, len = obj.length; i < len; i++) {
+        value = obj[i];
+        results.push(transform(value, parentIndent));
+      }
+      return results;
+    },
+    '[object Object]': function(obj, parentIndent) {
+      var key, results, value;
+      results = [];
+      for (key in obj) {
+        if (!hasProp.call(obj, key)) continue;
+        value = obj[key];
+        results.push(transform(key, parentIndent) + ' => ' + transform(value, parentIndent));
+      }
+      return results;
+    }
+  };
+  return transform = function(obj, parentIndent = '') {
+    var items, nestIndent, objType, result;
+    objType = Object.prototype.toString.call(obj);
+    switch (objType) {
+      case '[object Null]':
+      case '[object Undefined]':
+        result = 'null';
+        break;
+      case '[object String]':
+        result = "'" + obj.replace(/\\/g, '\\\\').replace(/\'/g, "\\'") + "'";
+        break;
+      case '[object Number]':
+      case '[object Boolean]':
+        result = obj.toString();
+        break;
+      case '[object Array]':
+      case '[object Object]':
+        nestIndent = parentIndent + indent;
+        items = nest[objType](obj, nestIndent);
+        result = `${arrOpen}${linebreak + nestIndent}${items.join(',' + (linebreak === '' ? ' ' : linebreak + nestIndent))}${linebreak + parentIndent}${arrClose}`;
+        break;
+      default:
+        result = 'null';
+    }
+    return result;
+  };
+};
+
+json2php = make();
+
+json2php.make = make;
+
+if (typeof module !== 'undefined' && module.exports) {
+  module.exports = json2php;
+  // Not that good but useful
+  global.json2php = json2php;
+}

node_modules/json2php/package.json

@@ -0,0 +1,36 @@
+{
+  "name": "json2php",
+  "version": "0.0.7",
+  "description": "JSON to PHP converter",
+  "main": "lib/json2php.js",
+  "scripts": {
+    "build": "coffee -c -b -o ./lib src/json2php.coffee",
+    "test": "mocha --require coffeescript/register 'test/**/*.coffee'"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/daniel-zahariev/json2php.git"
+  },
+  "keywords": [
+    "JSON",
+    "PHP",
+    "Converter"
+  ],
+  "author": "Daniel Zahariev <daniel.zahariev@gmail.com>",
+  "contributors": [
+    {
+      "name": "Daniel Zahariev",
+      "email": "daniel.zahariev@gmail.com"
+    },
+    {
+      "name": "Bozhidar Dryanovski",
+      "email": "bozhidar.dryanovski@gmail.com"
+    }
+  ],
+  "devDependencies": {
+    "coffeescript": "^2",
+    "mocha": "^9"
+  },
+  "license": "BSD",
+  "readmeFilename": "README.md"
+}

node_modules/json2php/src/json2php.coffee

@@ -0,0 +1,42 @@
+make = ({linebreak = '', indent = '', shortArraySyntax = false} = {}) ->
+  arrOpen = if shortArraySyntax then '[' else 'array('
+  arrClose = if shortArraySyntax then ']' else ')'
+  nest = {
+    '[object Array]': (obj, parentIndent) ->
+      for value in obj
+        transform(value, parentIndent)
+
+    '[object Object]': (obj, parentIndent) ->
+      for own key, value of obj
+        transform(key, parentIndent) + ' => ' + transform(value, parentIndent)
+  }
+
+  transform = (obj, parentIndent = '') ->
+    objType = Object.prototype.toString.call(obj)
+    switch objType
+      when '[object Null]', '[object Undefined]'
+        result = 'null'
+      when '[object String]'
+        result = "'" + obj.replace(///\\///g, '\\\\').replace(///\'///g, "\\'") + "'"
+      when '[object Number]', '[object Boolean]'
+        result = obj.toString()
+      when '[object Array]', '[object Object]'
+        nestIndent = parentIndent + indent
+        items = nest[objType](obj, nestIndent)
+        result = """
+          #{arrOpen}#{linebreak + nestIndent}#{
+            items.join(',' + if linebreak == '' then ' ' else linebreak + nestIndent)
+          }#{linebreak + parentIndent}#{arrClose}
+        """
+      else
+        result = 'null'
+    result
+
+json2php = make()
+
+json2php.make = make
+
+if typeof module isnt 'undefined' and module.exports
+  module.exports = json2php
+  # Not that good but useful
+  global.json2php = json2php

node_modules/json2php/test/json2php_test.coffee

@@ -0,0 +1,45 @@
+json2php = require('../src/json2php.coffee')
+
+describe 'json2php', ->
+  it 'If you give string you should get string.', ->
+    assert.equal "'dummydummy'", json2php("dummydummy")
+    assert.equal "'\\\'escaping\\\'quotes\\\''", json2php("'escaping'quotes'")
+
+  it 'If you give number you should get number.', ->
+    assert.equal 1, json2php(1)
+    assert.equal -1, json2php(-1)
+    assert.equal 0, json2php(0)
+
+  it 'if you give true or false you should get boolean true or false.', ->
+    assert.equal 'true', json2php(true)
+    assert.equal 'false', json2php(false)
+
+  it 'if you give undefined or null you should get null.', ->
+    assert.equal 'null', json2php(undefined)
+    assert.equal 'null', json2php(null)
+
+  it 'If you give array you should get php array.', ->
+# Single level
+    assert.equal 'array(1, 2, 3)', json2php([1, 2, 3])
+    # Multi level
+    assert.equal 'array(1, array(2), 3)', json2php([1, [2], 3])
+
+  it 'If you give object you should get php array of it.', ->
+    assert.equal "array('a' => 1, 'c' => 'text', 'false' => true, 'undefined' => null)", json2php({ a:1, c:'text', false: true, undefined: null})
+
+  it 'If you give object you should get php array of it.', ->
+    assert.equal "array('name' => 'Noel', 'surname' => 'Broda', 'childrens' => array('John' => array('name' => 'John', 'surname' => 'Bainotti'), 'Tin' => array('name' => 'Tin', 'surname' => 'Tassi')))", json2php({ name: 'Noel', surname: 'Broda', childrens: { John: {name: 'John', surname: 'Bainotti'}, Tin: {name: 'Tin', surname: 'Tassi'} } })
+
+describe 'json2php.make({linebreak:"🔪", indent:"🧱"})', ->
+  it 'returns a pretty printed php array given an array or object.', ->
+    pretty = json2php.make({linebreak:'🔪', indent:'🧱'})
+    assert.equal(
+      "array(🔪🧱'one',🔪🧱'two',🔪🧱array(🔪🧱🧱'name' => 'Noel',🔪🧱🧱'surname' => 'Broda',🔪🧱🧱'childrens' => array(🔪🧱🧱🧱'John' => array(🔪🧱🧱🧱🧱'name' => 'John',🔪🧱🧱🧱🧱'surname' => 'Bainotti'🔪🧱🧱🧱),🔪🧱🧱🧱'Tin' => array(🔪🧱🧱🧱🧱'name' => 'Tin',🔪🧱🧱🧱🧱'surname' => 'Tassi'🔪🧱🧱🧱)🔪🧱🧱)🔪🧱)🔪)",
+      pretty(['one', 'two', { name: 'Noel', surname: 'Broda', childrens: { John: {name: 'John', surname: 'Bainotti'}, Tin: {name: 'Tin', surname: 'Tassi'} } }])
+    )
+
+describe 'json2php.make({shortArraySyntax: true})', ->
+  it 'returns a pretty printed php array using short array syntax.', ->
+    pretty = json2php.make({shortArraySyntax: true})
+    assert.equal "['a' => 1, 'c' => 'text', 'false' => true, 'undefined' => null]", pretty({ a:1, c:'text', false: true, undefined: null})
+    assert.equal '[1, [2], 3]', pretty([1, [2], 3])

node_modules/json2php/test/test_helper.coffee

@@ -0,0 +1 @@
+global.assert = require("assert")