Sync main with release - #219
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CLUSTER (and MERGE, which composes on it) decided cluster boundaries with
LAG("end") -- the immediately preceding row's end -- so a later interval
contained within an earlier, wider one was spuriously split into a new
cluster once the preceding row ended early. Key the boundary off the
running maximum end of the preceding rows instead
(MAX("end") OVER (... ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING)),
which is the cluster's true right edge so far. The distance offset, the
first-row NULL behavior, and the separate PREV() predecessor-reference
predicate are unchanged; non-containment inputs are unaffected because the
running max equals LAG when no interval is contained.
Claude-Session: https://claude.ai/code/session_01TERWBHov76DQM3nQeT8yyy
Update the transpilation assertions from the LAG("end") adjacency to the
running-max MAX("end") OVER (... ROWS BETWEEN UNBOUNDED PRECEDING AND 1
PRECEDING) form, and add containment cases to the bedtools CLUSTER and
MERGE oracle suites (a wide interval containing a later narrower one that
ends before a third still-contained interval) -- the shape the previous
LAG boundary got wrong.
Claude-Session: https://claude.ai/code/session_01TERWBHov76DQM3nQeT8yyy
…-max Reword the predicate comment: adjacency now keys off the cluster's running-max edge (not the immediate predecessor), and note the two notions can reference different rows under containment while the predicate keeps its documented immediate-predecessor semantics. Addresses review advisories. Claude-Session: https://claude.ai/code/session_01TERWBHov76DQM3nQeT8yyy
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