{"id":"tombstone-lifecycle-fragmented-across-modules","text":"Tombstone management is handled differently at every layer: the LSM uses an ambiguous empty-bytes sentinel indistinguishable from empty values, compaction preserves tombstones by default with caller-controlled removal, and distributed deletion requires cross-replica convergence before safe removal — with no coordination between these concerns.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"tombstone-lifecycle-fragmented-across-modules","truth_value":"IN","reason":"premise"}]}}