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Overview
Comment:feat(content): hold and classify a structural horizon store

A structural-horizon clone (draft-fossil-horizon-00 §5.1) keeps only the manifests and nodes its held set reaches, so its phantoms need classes the content horizon never had: a parent the origin labelled below the horizon is elided, an unlabelled one stays transit because it may only be late (§5.3), and a phantom only a tag or cherry-pick names is a manifest below the horizon nothing in K reaches. SetStoreCone stops refusing the depth, and keeps the boundary labels beside the store cone, dropping them when the horizon moves since they name what lies below one C.

Timelines: family | ancestors | descendants | both | trunk | feat/horizon-cones
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SHA3-256: 31b140507a15b3f3619933efbbecde61df99e9684f8ae2ed0c3235a43c9a81d1
User & Date: [email protected] on 2026-10-22 15:49:33.000
Other Links: branch diff | manifest | tags
Context
2026-10-22
16:12
fix(horizon/seed): apply the seed only to linked check-ins

The seed's rows name their target as their source, and the crosslink treats a blob that sources a tagxref row as already linked. A sync stores an entry before it links it, so a seed applied in between left the entry unlinked for good: no event, no plink, no leaf. Apply now skips a target the store has not linked; the sync layer applies again after the round that links it. check-in: c7c0c130bd user: [email protected] tags: feat/horizon-cones, trunk

15:49
feat(content): hold and classify a structural horizon store

A structural-horizon clone (draft-fossil-horizon-00 §5.1) keeps only the manifests and nodes its held set reaches, so its phantoms need classes the content horizon never had: a parent the origin labelled below the horizon is elided, an unlabelled one stays transit because it may only be late (§5.3), and a phantom only a tag or cherry-pick names is a manifest below the horizon nothing in K reaches. SetStoreCone stops refusing the depth, and keeps the boundary labels beside the store cone, dropping them when the horizon moves since they name what lies below one C. check-in: 31b140507a user: [email protected] tags: feat/horizon-cones, trunk

15:26
Merge branch 'wip/horizon-seed' into feat/horizon-cones

The structural horizon's seed (draft-fossil-horizon-00 §5.2): an origin mints a control artifact carrying the tags in force at every entry of the held set, a clone holds it outside the artifact store where no sync, clone or rebuild can reach it, and the derivation applies it so every check-in in K derives as it does densely. Byte-identical to zit's seed when the latest summarized event is on a whole second. Conflicts in the horizon suite and table kept both sides; the seed's zit test now probes for a horizon-capable zit like the other horizon interop tests. check-in: 12dcbdeed6 user: [email protected] tags: feat/horizon-cones, trunk

Changes