feat(Docker): Upgrade to PHP 8.5.0RC3 with native ext-uri support

BREAKING CHANGE: Requires PHP 8.5.0RC3

Changes:
- Update Docker base image from php:8.4-fpm to php:8.5.0RC3-fpm
- Enable ext-uri for native WHATWG URL parsing support
- Update composer.json PHP requirement from ^8.4 to ^8.5
- Add ext-uri as required extension in composer.json
- Move URL classes from Url.php85/ to Url/ directory (now compatible)
- Remove temporary PHP 8.4 compatibility workarounds

Benefits:
- Native URL parsing with Uri\WhatWg\Url class
- Better performance for URL operations
- Future-proof with latest PHP features
- Eliminates PHP version compatibility issues

tests/Cache/Warming/CacheWarmingIntegrationTest.php

@@ -4,7 +4,7 @@ declare(strict_types=1);
 
 use App\Framework\Cache\Cache;
 use App\Framework\Cache\CacheKey;
-use App\Framework\Cache\FileCache;
+use App\Framework\Cache\Driver\FileCache;
 use App\Framework\Cache\Warming\CacheWarmingService;
 use App\Framework\Cache\Warming\Strategies\CriticalPathWarmingStrategy;
 use App\Framework\Cache\Warming\ScheduledWarmupJob;
@@ -19,7 +19,7 @@ describe('Cache Warming Integration', function () {
         $this->cacheDir = sys_get_temp_dir() . '/cache_warming_test_' . uniqid();
         mkdir($this->cacheDir, 0777, true);
 
-        $this->cache = new FileCache($this->cacheDir);
+        $this->cache = new FileCache();
 
         $this->logger = Mockery::mock(Logger::class);
         $this->logger->shouldReceive('info')->andReturnNull();