The companion drawer was hard-coded to the right column. Now
`<Words.Drawer side="left">` flips the editor grid so the drawer
takes the start column; the floating overlays (block handle grip,
block inserter "+") automatically render on the OPPOSITE margin so
they don't crash with the drawer's gutter. Default stays `'right'`
so existing consumers see no change.
Wiring:
- Eidos `<Words.Drawer>` gains `side?: 'left' | 'right'` (default
'right'). The value is passthrough'd as `data-side={side}` on the
rendered drawer root so CSS + sibling overlays can read it from
the DOM.
- `words.css`:
- `[data-words]:has([data-words-drawer][data-side='left'])`
flips `grid-template-columns` + `grid-template-areas` so the
drawer column sits at the inline-start.
- `[data-words-drawer][data-side='left']` swaps the visual
seam from `border-inline-start` to `border-inline-end`.
- `[data-words-block-inserter][data-side='left']
[data-words-block-inserter-button]` overrides `left: -28px`
to `right: -28px` so the "+" lands on the block's right
margin.
- Block-handle (`words-block-handle.svelte`): new `detectDrawerSide()`
reads `[data-words-drawer]@data-side` once per measurement. The
grip's `position.left` becomes `rect.right + 4` when drawer is
on the left (was always `rect.left - 28`).
- Block-inserter (`words-block-inserter.svelte`): same `$derived`
read of the drawer's `data-side`, propagated as `data-side` on
the inserter overlay element so the CSS rule above can flip the
"+" button.
- Demo: new `let drawerSide = $state<'left' | 'right'>('right')` +
a chip control "drawer side: right | left". `<Words.Drawer
side={drawerSide} />`.
Verified `npm run check` clean (pre-existing errors only).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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