The global broker snapshotted browser.extension_control.developer_mode once
at construction, so flipping it OFF in config did not revoke raw CDP/eval
from already-attached controllers until process restart — a revocation
failure at the highest-privilege browser surface (blocker 3 of
andrexibiza's #91535 review). select() now consults the live config on
every privileged selection (explicit bool still pins for tests); off->on
also unlocks without restart. Regression test drives both directions
against an attached controller. Also drops the dead back-compat
_artifact_store property (zero readers).
kshitijk4poor
c16c262d01