ProofOfConcept 4747004b36 types: unify all epoch timestamps to i64 ... All epoch timestamp fields (timestamp, last_replayed, created_at on nodes; timestamp on relations) are now i64. Previously a mix of f64 and i64 which caused type seams and required unnecessary casts. - Kill now_epoch() -> f64 and now_epoch_i64(), replace with single now_epoch() -> i64 - All formatting functions take i64 - new_node() sets created_at automatically - journal-ts-migrate handles all nodes, with valid_range check to detect garbage from f64->i64 bit reinterpretation - capnp schema: Float64 -> Int64 for all timestamp fields		2026-03-05 10:23:57 -05:00
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memory.capnp	types: unify all epoch timestamps to i64	2026-03-05 10:23:57 -05:00