- Add Kiwix integration with HTML parser for offline Wikipedia search
- Add SearXNG integration for web search fallback
- Cascade triggered when FlashRank top-1 score < 0.5 threshold
- Context tagging: [DOMAIN_KNOWLEDGE], [OFFLINE_WIKI], [WEB_SEARCH]
- Cascade decision logging to /opt/recon/logs/cascade.jsonl
- Graceful degradation: skip unavailable tiers
- Version bumped to 5.0.0
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>