v0.8.0

Changed

• Breaking: MCP error responses for all server tools that wrap _capture_state_cmd (memory_state_show, memory_state_add, memory_state_set, memory_state_remove, memory_state_from_note) plus memory_index_upsert now return structured JSON payloads with error_type, message, hint, and exit_code
• memory_state_from_note now accepts auto_improve_mode=detect|add|skip, reports auto_improve metadata in its JSON response, and includes legacy resolution migration summaries when _improvement_backlog_resolved.json is encountered
• memory_index_upsert and memory_state_from_note tool descriptions now document migration/recovery usage more explicitly