Changes touching this path

• landed becomes a state something actually writes, and the walk that decides it had to see the push's own changes: ADR 0075 declares three terminal proposal states and until now close_proposal's only non-test caller was propose::withdraw, so landed - the one that is nobody's act, the work being in ref_head - was unreachable and a row read open over work the repo had already taken. ingest now closes the proposals its declared head set lands, decided OUTSIDE the transaction because IngestTxn is assembled and validated outside so the transaction stays pure writes after the CAS, and that same CAS is what makes the decision sound rather than racy: generation_expected pins exactly the head set the walk assumed, so an interleaved push fails the swap and takes the closes down with it. the ticket and ADR 0092's predecessor both said this needed nothing new because walk already reports an empty extent for a landed tip, and that is true of the STORED graph and the stored graph is the wrong one: a maintainer lands a proposal by MERGING it, so the change making the tip an ancestor of the new head set rides in this bundle and is not in the store yet, and walking stored edges alone closes nothing on exactly the push this exists for. the walk overlays the prepared changes' parent edges and is red without that overlay. only open rows are candidates and the store applies the decided row only over an open one, so a proposal that went terminal between the decision and the commit keeps its own declaration and its own date - a push cannot overwrite a withdrawal it never saw, asserted in the conformance suite against both stores rather than in one. a repo with no open proposal reads its proposal rows and stops without fetching the graph at all, which is every push to every repo never proposed to. red under mutation, counts read each time: the prepared overlay dropped, so the merge in this bundle lands nothing (421 passed and 1 failed, restored to 422). the SQL is new so it was run rather than read: bash ci/local.sh against a throwaway Postgres, where pg::tests::an_ingest_closes_the_proposals_it_declares_landed passes beside its memory twin and 166 pg tests ran, so the UPDATE was parsed by a real server rather than only by a text test. no migration, no wire or format byte moves, and the forge behaviour moves, so this rides the next deploy (#2177) fb7c63c8 · dbf3dbe6…

Renames are not followed. loot's tree maps a path to an address, so a rename is a delete and an add. This list is the history of the name, not of the bytes.