```json { "table_name": "neal_actions", "primary_key": "id", "candidates": [ { "rank": 0, "partition_key": "id", "partition_key_label": "primary_identifier", "partition_key_reasoning": "RPUV=1.00, uniqueness=1.000 — perfect unique identifier for each action record. Semantic role: primary key for dimension table tracking system actions/decisions.", "clustering_key": null, "clustering_key_label": null, "clustering_key_reasoning": "Dimension tables typically do not require internal sorting. No natural ordering axis within action records.", "world_line": null, "session_column": null, "confidence": "HIGH", "notes": "Standard dimension table pattern: partition by primary_identifier (id), no clustering needed. The table tracks discrete action records (label.set, label.clear, search.rebuild) with unique IDs. created_at is present as event_time but is not used for clustering since this is a dimension table, not a path/event log." } ] } ```