A dashboard write scoped to another profile (POST /api/model/set ?profile=B
runs inside _profile_scope(B)) reached reconcile_record() unconditionally, so
_config_stamp()/_inventory_other_providers() resolved B's home and B's provider
flipped the LAUNCH profile's record to provider_configured=True with a
setup.ready broadcast. Bail out when get_hermes_home() is not the process
home; the negative case is added to the surface test, and the model.save_key
hook is now pinned by its own test.
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