Nomad changes

docs/snippets/php/plugins/pdf_only_processor.md

@@ -0,0 +1,66 @@
+```php title="PHP"
+<?php declare(strict_types=1);
+
+use Kreuzberg\Kreuzberg;
+
+class PdfOnlyProcessor implements PostProcessor {
+    public function name(): string {
+        return "pdf-only-processor";
+    }
+
+    public function version(): string {
+        return "1.0.0";
+    }
+
+    public function initialize(): void {
+        // Initialize PDF-specific resources
+    }
+
+    public function shutdown(): void {
+        // Cleanup resources
+    }
+
+    public function process(object &$result, object $config): void {
+        // Only execute for PDFs
+        if ($result->mime_type !== 'application/pdf') {
+            return;
+        }
+
+        // Process PDF-specific logic
+        // For example: extract page information, count pages, extract images, etc.
+
+        if (!isset($result->metadata)) {
+            $result->metadata = [];
+        }
+
+        if (is_array($result->metadata)) {
+            $result->metadata['pdf_processed'] = true;
+            $result->metadata['processor_version'] = '1.0.0';
+        }
+    }
+
+    public function processingStage(): string {
+        return "Middle";
+    }
+
+    public function shouldProcess(object $result, object $config): bool {
+        // Only process PDFs with content
+        return $result->mime_type === 'application/pdf' && !empty($result->content);
+    }
+
+    public function estimatedDurationMs(object $result): int {
+        // PDF processing varies by size
+        return 50;
+    }
+
+    public function priority(): int {
+        return 75;
+    }
+}
+
+// Register the PDF-only processor
+$processor = new PdfOnlyProcessor();
+Kreuzberg::registerPostProcessor($processor);
+
+echo "PDF-only processor registered\n";
+```