fix: only a window change sets the time scale; a fit states the whole of it

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The time scale is more than the axis: it is also the trigger's event span, the
buffer partition and the control's readout. A zoom or a pan was already clean --
the controller writes the member axis and `clamp_to_data()` caps the span -- but
both fits moved `window_s_` alone and only restated the control. The event span
then stayed on the previous window until the next decade step or unit change
applied the fitted value for real, so one action changed the time scale twice.

`apply_window_scale()` is split out of `apply_time_window()` for the fits to use:
it moves the partition, the event span, the control and the session, and leaves
the view alone, because `set_time_window()` re-arms the live follow and would
throw a held event or a paused view back onto the stream. The fits report the
span they framed, `fit_all()` delegates its x half to `fit_x()` so the two cannot
drift, and the probe drives the menu handlers rather than `RowSet` so it sees the
half that lives there. `[fit-probe]` gained `event_span=`, which must equal
`window=` on every line.

Also moves the plotter pin to 03c41ad (three build warnings, no behaviour).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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Martino FerrariandClaude Opus 4.6 committed 2026-10-05 16:12:59 +02:00

1 parent 1f6738031a

commit 9888fd9977

7 files changed

+128 -63

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deps/plotter

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Submodule deps/plotter updated: c960decaea...03c41adbec.