- Add TypedDict types for agent summaries (LibraryAgentSummary, MarketplaceAgentSummary, DecompositionResult)
- Add extract_search_terms_from_steps() to extract keywords from decomposed instructions
- Add enrich_library_agents_from_steps() for two-phase search after decomposition
- Integrate enrichment into create_agent.py flow
- Add comprehensive tests for new functionality