Check-in [4ac6baf2ea]

fix(horizon): date a seed no earlier than the origin's minted floor check-in: d47958493b user: [email protected] tags: main, trunk

Shunning and purging the latest tag event removed the tagxref rows a seed's D was dated from, so the next seed was earlier than the one every structural clone held. Each clone's D floor refused it as a replay and it fell back to the content horizon until the repository's tags caught up with the purged tag's time; a far-future tag held it there indefinitely.

The draft (zit 39546186f4, §5.2.2) now has an origin date a seed no earlier than the latest D it has minted and keep that D across restarts. Mint reads the mark from the store's horizon-seed-floor config row, dates the seed at the later of it and the latest tag event, and raises the row after minting with a conditional upsert, so concurrent mints never lower it. No config group transfers the row, so it is never sent.

Re-pins draft-fossil-horizon-00 at 39546186f4 and adds the conformance case horizon.5.2.2.seed-date-shun, which fails without the floor. check-in: 1fd0dfdbc1 user: [email protected] tags: feat/horizon-seed-floor, trunk

feat(horizon): re-pin to zit caeef421ee: repository-wide seed D and the receive rule check-in: 7b6f43f1dc user: [email protected] tags: main, trunk