Changes touching this path

• a retired namespace key no longer learns that a metadata-private repo holds a proposal: propose::visible_to decided ownership with a byte compare against repo.owner, the shape #1955 took out of AccessClass::of, so the withdraw route, which asks that gate before the author check, refused a retired namespace key as not the author with a 403 where a key that is no party to the offer is told no such proposal with a 404, and the difference between two refusals discloses the fact metadata_public governs. the gate takes AccessClass::may_read_metadata whole now and compares no pubkey of its own, so the two read gates in loot-forge ask ownership in one place, and the answer is a live or accountless namespace key, a live key of the account that holds the namespace (#1744) and not a retired key (#1955); the two standing readers, the tip author and the presenting proposer, are unmoved and still need no account. taking the class whole widens the gate to a live key of a member account, deliberately and pinned: may_read_metadata is the same axis, a member already pulls every message, tree and author in ref_head, and no content moves, where an account holder with no membership row on this repo still sees nothing. the other half the ticket named, a rotated owner treated as a stranger, is latent, as the correction on the ticket established: no route reads or lists proposals, propose::read runs in production only for the presenter, propose::list has no production caller, and on withdraw the successor key only got a different refusal. the class is resolved once per read, per listing and per withdraw attempt, outside the listing row loop and only for a row that exists, and a party to the offer pays it too. red first, on the unchanged predicate: the three new propose.rs cases went red over that selection (24 passed, 3 failed), the read arm handing a retired namespace key the whole proposal view where a stranger reads none and the withdraw arm answering 403 against 404. with the old byte compare put back as the class answer the four in-memory cases go red (400 passed, 4 failed) and the new member_class.rs case against a throwaway cluster goes red (4 passed, 1 failed); with the class dropped so the flag answers alone nine go red, the write-gate and one-sentence pins among them (395 passed, 9 failed; 4 passed, 1 failed). ADR 0075 and ADR 0077 carry the #2002 amendment, CONTEXT.md names the class, the cost and the widening, and AccessClass::of stops claiming every caller reaches it through serve::Reader::new. one flake was found on the way and fixed: pg::tests the_migration_lock_is_one_lock_for_the_whole_cluster probed the advisory key once after dropping its own hold, and hold blocks, so a queued harness takes the lock as it comes back, which was red on both runs of a loaded workspace suite against a cluster and green on three runs of the lib suite alone; the probe waits for the release now, bounded, and still fails on a leaked lock (0 passed, 1 failed after the whole wait, run alone). no migration, and the forge binary changes, so this owes a forge deploy. the forge suite is green against a throwaway cluster with the CI env block and LOOT_FORGE_TEST_REQUIRE_DATABASE (474 passed over nine binaries, no skip note), and the workspace suite is green against the same cluster (3838 passed) (#2002) eed4d01c · 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.