Previous entry leaned on filler ("close the door behind it", "what
people expect") and gave only a vague behavioural summary. Replace
it with the actual mechanism: which table is touched, the transaction
boundary, the asymmetry between change (preserves caller) and reset
(revokes all), and why the session middleware needs no change.
Also drop the em dash in the metadata line.
Signed-off-by: Bryan Frimin <bryan@getprobo.com>
