Heta

Use when the agent needs to answer questions from stored documents, recall past observations or context, store new knowledge for later, or discover available knowledge bases. Triggers on any of: "search the knowledge base", "what do you know about X", "remember this", "recall what happened", "find in documents", "store this observation", "look it up", "do you remember". Covers HetaDB (human document KBs), MemoryKB (agent knowledge graph), and MemoryVG (personal episodic memory).