fix: StoredNodeGuard checks URLs, value keys and library ids strictly (P17)

URLs must be sanitizer-stable, keys inside values follow ValueCleaner::VALUE_KEY,
instances need a digits-only globalModule; state keys reuse AttrWriter::STATES.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tests/Unit/Integrations/Divi/Compose/ShortformWriterTest.php

@@ -438,7 +438,12 @@ final class ShortformWriterTest extends TestCase
         }
 
         $modules = ['raw' => [
-            'effects' => ['path' => 'module.decoration.interactions', 'sub' => 'interactions', 'kind' => 'text', 'description' => 'x'],
+            'effects' => [
+                'path' => 'module.decoration.interactions',
+                'sub' => 'interactions',
+                'kind' => 'text',
+                'description' => 'x',
+            ],
         ]];
         foreach (['data-probe', null] as $value) {
             $result = ComposeFixture::shortform(false, $modules)->apply('raw', self::BASE, ['effects' => $value], 'n');