WebP Express CloudHost.es Fix v0.25.9-cloudhost

✅ Fixed bulk conversion getting stuck on missing files
✅ Added robust error handling and timeout protection
✅ Improved JavaScript response parsing
✅ Added file existence validation
✅ Fixed missing PHP class imports
✅ Added comprehensive try-catch error recovery

🔧 Key fixes:
- File existence checks before conversion attempts
- 30-second timeout protection per file
- Graceful handling of 500 errors and JSON parsing issues
- Automatic continuation to next file on failures
- Cache busting for JavaScript updates

🎯 Result: Bulk conversion now completes successfully even with missing files

🚀 Generated with Claude Code (https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

vendor/rosell-dk/webp-convert/src/Convert/Converters/ConverterTraits/CurlTrait.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace WebPConvert\Convert\Converters\ConverterTraits;
+
+use WebPConvert\Convert\Exceptions\ConversionFailed\ConverterNotOperational\SystemRequirementsNotMetException;
+use WebPConvert\Convert\Converters\AbstractConverter;
+
+/**
+ * Trait for converters that works by uploading to a cloud service.
+ *
+ * The trait adds a method for checking against upload limits.
+ *
+ * @package    WebPConvert
+ * @author     Bjørn Rosell <it@rosell.dk>
+ * @since      Class available since Release 2.0.0
+ */
+trait CurlTrait
+{
+
+    /**
+     * Check basis operationality for converters relying on curl.
+     *
+     * Performs the same as ::checkOperationality(). It is here so converters that overrides the
+     * ::checkOperationality() still has a chance to do the checks.
+     *
+     * @throws  SystemRequirementsNotMetException
+     * @return  void
+     */
+    public function checkOperationalityForCurlTrait()
+    {
+        if (!extension_loaded('curl')) {
+            throw new SystemRequirementsNotMetException('Required cURL extension is not available.');
+        }
+
+        if (!function_exists('curl_init')) {
+            throw new SystemRequirementsNotMetException('Required url_init() function is not available.');
+        }
+
+        if (!function_exists('curl_file_create')) {
+            throw new SystemRequirementsNotMetException(
+                'Required curl_file_create() function is not available (requires PHP > 5.5).'
+            );
+        }
+    }
+
+    /**
+     * Check basis operationality for converters relying on curl
+     *
+     * @throws  SystemRequirementsNotMetException
+     * @return  void
+     */
+    public function checkOperationality()
+    {
+        $this->checkOperationalityForCurlTrait();
+    }
+
+    /**
+     * Init curl.
+     *
+     * @throws  SystemRequirementsNotMetException  if curl could not be initialized
+     * @return  resource|\CurlHandle  curl handle (from PHP8: CurlHandle)
+     */
+    protected static function initCurl()
+    {
+        // Get curl handle
+        $ch = \curl_init();
+        if ($ch === false) {
+            throw new SystemRequirementsNotMetException('Could not initialise cURL.');
+        }
+        return $ch;
+    }
+}