Fence owner discovery by profile, lease and loopback endpoint, and hand the authenticated URL to the existing Ink transport without acquiring a competing lease. Distinguish lease age from turn activity in unsupported-owner recovery.
Client slice only: requires the integration runtime to advertise shared_runtime_url and provide the session-attach handshake. Classic CLI attachment remains an integration gap.
For each issue anchor present in BASE 63279301bc non-test .py and absent on HEAD, the BASE comment/docstring block was re-attached at the HEAD location of the code it explained (matched by the distinctive code line / enclosing def). Sentences already covered by an existing HEAD comment were deduped; the issue number always survives. Insert-only: no code lines changed.
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