✨ feat(mana-crawler): add web crawler service

NestJS-based web crawler service for structured content extraction.

Features:
- Depth-controlled crawling with URL pattern filtering
- robots.txt compliance
- HTML/PDF/Markdown content extraction
- BullMQ job queue for async processing
- Redis caching layer
- Prometheus metrics

services/mana-crawler/src/queue/processor.module.ts

@@ -0,0 +1,20 @@
+import { Module, forwardRef } from '@nestjs/common';
+import { CrawlProcessor } from './processors/crawl.processor';
+import { ParserModule } from '../parser/parser.module';
+import { RobotsModule } from '../robots/robots.module';
+import { CacheModule } from '../cache/cache.module';
+import { MetricsModule } from '../metrics/metrics.module';
+import { QueueModule } from './queue.module';
+import { CRAWL_QUEUE } from './constants';
+
+@Module({
+	imports: [
+		forwardRef(() => QueueModule),
+		ParserModule,
+		RobotsModule,
+		CacheModule,
+		MetricsModule,
+	],
+	providers: [CrawlProcessor],
+})
+export class ProcessorModule {}