Add SchedulerClient to communicate with external scheduler service for registering volatile prefetch tasks discovered during HybridRAG searches. - Add scheduler_client.py with full REST API for task CRUD operations - Add scheduler_url config setting (default: http://scheduler:8090) - Update consolidation service to use scheduler for prefetch registration - Add scheduler health checks to startup/shutdown lifecycle When HybridRAG classifies web content as prefetch-worthy, it now creates scheduled tasks that periodically refresh the volatile cache via the external scheduler service. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>