Slice 3b of "Make UOK the SF Control Plane". handlePlanSlice now
accepts an optional uokContext option and threads it into every
insertGateRow call (Q3, Q4 slice gates; Q5, Q6, Q7 per task; Q8
slice closeout).
executePlanSlice derives the ctx from the singleton autonomous session
when one is active — currentTraceId becomes the v2 traceId/parentTrace,
surface and runControl are pinned to "autonomous", permissionProfile
follows session/prefs. Tools invoked outside an autonomous loop
(interactive REPL, headless one-shot) pass uokContext=null and the
seeded rows fall through to the legacy NULL-column shape, classified
as "legacy" by status uok.
Lazy import of auto/session.js keeps headless/test code paths from
paying the session-singleton load cost when they don't need it.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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