Changes touching this path

• the review-sweep fix-up over #2299, #2142 and #2154. a seek cache round now claims the busy marker before it decides anything: LootCache::claim_and_make creates loot-seek-refreshing with create_new before it asks whether the position stands or makes one, so a position another invocation is making carries a marker from before its store exists, and a round that finds a live one neither makes the position over it (refused, naming the state, when no store stands yet) nor removes it when its own refresh fails; a marker past the hour is taken over. before, the marker was written after the make, and a second round inside that window read the half-made store as a leftover and removed it. a first refresh now means no record file at all (Refresh::absent): the record is written through atomic_write rather than truncated in place and read through read_replaced, so an empty or unreadable record is a refresh that finished and a failed refresh leaves that position standing. pinned in seek.rs by a_make_in_progress_is_not_removed_by_another_invocation, which drives a make through claim_and_make and fails a second round inside it, and by a_record_that_does_not_read_is_not_a_first_refresh; red first against the unchanged rule (1 passed and 2 failed, the make extracted into claim_and_make with the marker still after it). red under mutation, counts read each time: the claim moved after the make (1 passed and 3 failed), begin in place of claim (1 and 3), a round that finds a live marker deciding first on the record (2 and 2), absent read as unreadable (3 and 1), the record written with fs::write (3 and 1), no refusal over a claimed unmade position (3 and 1), a stale marker read as live (3 and 1), each restored to green. the seek unit tests now default to a cache home under the temp directory, pinned by the_unit_tests_cache_home_is_never_the_runners (red with the default dropped, 4 passed and 1 failed). stale sentences fixed: the ADR 0090 #2142 amendment is corrected, the CONTEXT.md seek entry names the marker exception and the gc exit, ADR 0023 scopes the refusal-only exit to a question, root_notice and discovered_store_dot say why the function is free rather than counting callers, the in_progress verb is the verb whose stop created the record and another verb is refused, the last-updated header states its import reach by reachedModules, the seek module doc states the exit property, and a CONTEXT.md rewrap leftover is rewrapped. through the lane binary under a scratch LOOT_SEEK_CACHE, a position with an empty record stands after a failed refresh and a marker-only position is refused with its marker left. no migration, no format byte and no published wording moves, so this owes no deploy. the site gate is green (680 passed and 62 skipped over 62 files, 62 surfaces) and the workspace suite is green (4328 passed over 137 binaries, 12 ignored) (#2303) 4c489c97 · dbf3dbe6…

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