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>

lib/classes/Sanitize.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace WebPExpress;
+
+class Sanitize
+{
+
+    /**
+     *  The NUL character is a demon, because it can be used to bypass other tests
+     *  See https://st-g.de/2011/04/doing-filename-checks-securely-in-PHP.
+     *
+     *  @param  string  $string  string remove NUL characters in
+     */
+    public static function removeNUL($string)
+    {
+        return str_replace(chr(0), '', $string);
+    }
+
+    public static function removeStreamWrappers($string)
+    {
+        return preg_replace('#^\\w+://#', '', $string);
+    }
+
+    public static function path($string)
+    {
+        $string = self::removeNUL($string);
+        $string = self::removeStreamWrappers($string);
+        return $string;
+    }
+
+}