The sidebar's marker rested greyed at mid-track until the first scroll or
scrub. The reasoning was that anchoring it would imply a choice the user
had not made -- but that reads the marker as reporting an intention, and
it does not. The sidebar's whole claim is to say *when* you are, and that
is known from the first frame: the grid is at the top of the library, or
wherever it was last left.
So a launch opened with the marker halfway down an axis whose visible
photographs were all from the wrong end of it. Dimmed rather than absent,
which made it look like a reading rather than the absence of one.
Seeded in `refresh_timeline` -- the one place that decides what the
marker says, and the one that runs on every route which builds the axis
-- and only when nothing has claimed it, so a scroll or a scrub still
speaks for itself.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
dtourolleandClaude Opus 5
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