Every context-browser row (system prompt, tool schemas, user/assistant/
tool/skill/inject messages) now names the turn/step of the request that
first carried the item. The stamp derives client-side from the first
request logged after the item's seq — assemble's inclusion rule is
n.seq < R.seq — the same next-request attachment the events card uses,
so no wire change and graceful degradation on older rows.
The stamp merges with the row clock into ONE muted meta run
('T1 S41 · 22:58:10'), so the meta tail reads as a single unit instead
of three separate clusters; the token figure stays separate. Hover
explains the stamp in both locales. The live tail (items no request
carries yet) and turn-less introducing requests (older hosts) carry no
stamp rather than a mislabeled one.