selectSession() toggles .active at once while _syncTabStripCorner() only runs in
the debounced render, so a cap set after measuring left a newly selected first
tab wider than the room and dropped the first row below the toolbar until then.
max-width changes nothing on a narrower tab, so the cap is simply always on, and
the clear-before-measure and finish-the-animation loops go. The no-usable-room
test uses 8 tabs: at 40 the scroll fallback fires first and it passed at any
threshold.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The wrapped header strip fell back to the plain wrap whenever its first
tab was wider than the room beside the toolbar. A selected tab is wider
(its gear and close show), so selecting the first tab flipped the whole
strip back: the toolbar took its own column again and, with long names,
every tab took a line of its own. Selecting any other tab brought the
full-width rows back.
The first tab is now trimmed to the room instead (tab-corner-fit, a
max-width from --tab-corner-first-max, its name ellipsized). Only a
toolbar that leaves less than TAB_CORNER_MIN_FIRST_TAB (120px) beside
it keeps the plain wrap, which does not depend on the selection.
Two measuring details make the trim hold:
- the room comes from the rounded-up float width, less the tab's 2px
margin and a pixel for subpixel layout (a tab at the exact width still
wrapped under the float);
- the first tab is measured with its trim cleared and its gear/close
width transitions finished, or a grown room reads the last trim as the
width and a selection change is judged by the width the tab is leaving.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Review follow-up for the L-shaped header strip:
- _syncTabStripCorner() keeps the plain wrap when the plain strip is
already past --tab-strip-max-height, checked before .tabs-corner goes
on: the float scrolled with the tabs while the toolbar stayed put, so a
scrolled strip put tabs under #headerRight, and a re-render of a
scrolled two-rows strip sized the float from the scrolled frame. The
"- scrollTop" in contentTop is gone (always 0 now).
- A strip just under its max-height that passes it once the float is in
falls back to the plain wrap as well.
- test/tab-strip-corner.browser.test.ts (real Chromium, real header and
styles.css), listed in BROWSER_TEST_GLOBS.
- src/web/CLAUDE.md Tab layouts entry describes the L-shaped classic strip.
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