sm.puri.OSK0 is a name, not a process. Boot, a crash-restart and an
osk-switch swap each put a fresh keyboard behind it, and the visibility
monitor mirrored the newcomer's opening claim into oskOpen as though the
user had asked for a keyboard. Measured: shell up 03:03:38, self-showed
at 03:03:43, nobody near the phone.
Track the bus owner - gdbus already prints it and the 'Visible' filter
was throwing it away - and on a change push oskOpen at the new owner
instead of pulling state out of it. A process that just started has no
history; the shell is the continuity of intent across the keyboard's
lifetime.
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