feat: Add health monitoring and fallback system#232
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- PRD: Programmable Memory & Learning Layer - DocType designs: Memory Record, Policy, Profile - Tech specs: Capture/Retrieval, Storage Architecture - Profiles: Travel Planning, Programming, Documentation - Implementation plan and project tracking
…r-database support - Add BackendHealthMonitor with 5-minute TTL caching - Add FallbackRetriever with automatic backend failover - Add scheduled job definition for periodic health checks (every 5 minutes) - Add health_check, supports_filters, supports_hybrid_search methods to sqlite_fts backend - Update knowledge search tool to use FallbackRetriever Files added/modified: - huf/ai/knowledge/health_monitor.py - huf/ai/knowledge/fallback_retriever.py - huf/huf/scheduled_job_type/health_check_backends/health_check_backends.json - huf/ai/knowledge/tool.py - huf/ai/knowledge/backends/sqlite_fts.py
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Summary
Implements health monitoring and automatic fallback system for vector backends.
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Ensures reliability when using external vector databases.