Edge function: memory types module, classifier update, MCP tool bug fixes

Memory types are now richer and more accurate — six kinds (Decision, How-to, Standard, Fact, Event, Note) replace the old four, and the MCP store_memory tool now returns the resolved type in its confirmation so agents see exactly how each memory was classified. Filtering by type in list_memories now works correctly — it was previously filtering the wrong column against a retired vocabulary and returning nothing useful.