Skill for searching and evolving the SQLite-backed Knowledge Graph. Use this when you need structured fact/concept/link search across one or more teams, NPCs, or directory scopes.
The Knowledge Graph (KG) is stored in the application's database (not YAML). It is scoped by (team_name, npc_name, directory_path). Facts and concepts carry generation numbers and origin tags.
Search methods (choose the right one):
1. Keyword search — fast substring match over fact statements.
`kg_search_facts(engine_or_kg, "keyword")` → List[str]
2. Embedding search — semantic cosine similarity via vector embeddings.
`kg_embedding_search(engine_or_kg, query="...", embedding_model="nomic-…
