Development record

With seven sessions sharing one machine, a drain lane's definition of done waited over an hour at the preflight load gate ("waiting for capacity: 3 make preflights are running"), and the drain's 120-minute window elapsed while its first lane was still in progress. The gate admits one preflight at a time by default, so each session's preflight queues behind every other's: on a busy account a one-line nitpick fix takes hours to reach its reviewers. Nothing measures or reports that wait, so a run cannot tell a lane stuck at the gate from one still working.