ROUND 4: Given Phase 1 findings, refine the count-centroid approach. KEY UNSOLVED: How does the translation layer between count-based FrontierBundle and XOR-based CompositeMemory work? When the multi-hop pipeline needs to unbind from a count-centroid result, what is the exact operation? Show the full 3-hop traversal pipeline step by step: start node -> count-centroid bundle -> unbind relation -> attractor cleanup -> next hop. Include the exact Rust types at each step.
