[callumalpass]

Fixes #2507. Thanks to alentangzy-jpg for reporting it.

Cause

styles/bases-views.css set .kanban-view__swimlane-row > :first-child to 150px under @media (max-width: 1200px) and 120px under @media (max-width: 768px). The rule dates from before the rows used a grid. Since d0dd3ad37 (first tagged in 4.1.0) the label column has been a fixed 120px grid track, so from 769px to 1200px the 150px label overflows its track. The label is sticky with z-index: 5, so it covers the first 30px of the first column in the header and every lane. Scrolling cannot reveal that strip.

This depends on window width, not macOS or monitor orientation. It reproduces on Linux. The media query reads the viewport, so a narrow pane in a window over 1200px is not affected. The reporter's screenshots match: the label is 150px wide at 1080px and 120px at 1920px.

#2485, #2487 and the 4.16.0 collapsed-column work did not cause this. The 4.15.0 stylesheet shows the same overlap, and swimlane header cells have no collapse control.

Fix

Remove both fixed widths so the label fills its grid track at every window size. The label column is now 120px throughout, and the padding and font-size rules in those media queries stay. Mobile layouts already set their own label width through --kanban-swimlane-label-width.

Tests

• New e2e e2e/issues/issue-2507-kanban-swimlane-first-column.spec.ts checks with elementFromPoint that the first column's left edge is not covered at 1200, 1080 and 769px. This spec fails on main.
• Measured on isolated Obsidian 1.14.2, with columnWidth: 280 and a formula swimlane:

Viewport	Before: label / track / overlap	After
1920, 1280, 1201	120 / 120 / 0	120 / 120 / 0
1200, 1080, 1000, 769	150 / 120 / 30px	120 / 120 / 0
768, 600	120 / 120 / 0	120 / 120 / 0

• The non-swimlane board at 1080 and 600px is unaffected before and after.
• Local: lint, stylelint, typecheck, full Jest (780 suites passed), production build, and the e2e specs for [FR]: Drag-to-reorder Kanban swimlane rows, persisting into swimLaneOrder #2285, [Bug]: Collapsed columns in kanban view don't stay collapsed after Obsidian/tab reload #2484 and Color Kanban columns by status #2260 all passed. These ran with npm: rpnpm refuses this repo, which has no pnpm-lock.yaml.
• Not run: the full e2e suite and bundle-size check. Not tested on macOS or Obsidian 1.15.0.