Saved column widths were applied as fixed pixels, so switching from fullscreen
to windowed mode left the column sum wider than the viewport and the user had to
manually drag the window wider just to see the rightmost columns.
Now: a separate _idealColumnWidths map holds the user's preferred widths
(persisted), and _applyFittedColumnWidths reshapes the displayed widths to fit
the current container width. When sum(ideals) > container.clientWidth, every
column is scaled by the same factor so the row exactly fits (and a hidden
column becomes visible again).
- Two-tier widths: ideals are only updated by an explicit drag, not by a
resize-driven refit. So dragging while the window is narrow no longer
permanently shrinks every other column.
- saveDraggedColumnWidth(col, w) saves a single column's new ideal.
- Window-resize listener refits with a 60ms debounce.
Lint clean, full suite 200/200.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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