feat(sidebar): drag-resize content width with a mouse handle - #49
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Invisible 1-col grab zone on the sidebar's left edge. Drag sets a session-only width override (view.tocWidthOverride); double-click resets to auto width. A full-screen drag shield owns the drag stream so capture survives the pointer leaving the 1-col handle on the first motion. Width override lives in the view-state store; clamp helpers are pure in sidebar-resize.ts.
Drag the seam to set a session-only content max-width override, lifting the configured cap so wide terminals reclaim the dead space as readable content in both drag directions. The TOC stays auto-width and rides the seam. Double-click clears the override. App owns the gesture (onSeamDown) so double-click reset works whether the second press lands on the handle or the drag shield; a drag clears the double-click timer so a drag's mousedown never pairs with the next click.
Startup benchmark (
|
| build | mean | ratio | verdict |
|---|---|---|---|
| baseline (main@416931a) | 723.5ms ± 10.4ms | — | |
| PR | 719.7ms ± 13.6ms | 0.99× | ✅ ok |
Thresholds: warn ≥ 1.1×, fail ≥ 1.25×. Baseline built from main.
denolfe
marked this pull request as ready for review
August 13, 2026 23:49
denolfe
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Aug 15, 2026
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Makes scrollbar draggable. Content flows to width of content view. Double-clicking resets the resize.
CleanShot.2026-08-13.at.19.47.01.mp4
Key Changes
contentWidthOverridefrom the seam column. It lifts the configured cap, so content grows past 100 cols and the TOC rides along.