refactor(words): drop vertical toolbar orientation

The companion drawer + new floating overlays (image bar, block handle,
block inserter) assume a horizontal toolbar above the content. The
vertical layout was a CSS-grid two-column repositioning that fights
that geometry and was the cause of the new design breaking when the
user switched to vertical.

`horizontal` is the only orientation now. Cuts:

Morfo (`morfo/components/words.ts`)
  - Toolbar + ToolbarGroup parts: `data-orientation` becomes a literal
    `'horizontal'` (no longer reads from `propRef('orientation')`).
  - Same for the toolbar's `aria-orientation`.

Soma (`soma/components/words/types.ts`, `exports.ts`, provider)
  - Removed `WordsToolbarOrientation` type entirely.
  - Removed `orientation?` from WordsToolbarProps and WordsToolbarGroupProps.
  - Provider opts no longer read or pass through `orientation`.

Eidos (`eidos/components/words/{types,words.svelte,words-toolbar.svelte,words.css}`)
  - `WordsProps.toolbarOrientation` removed.
  - `<Words.Toolbar>` / `<Words.ToolbarGroup>` no longer accept or
    forward `orientation`.
  - Six chunks of CSS that targeted `[data-orientation='vertical']`
    deleted (toolbar layout, content grid placement, status, find-replace,
    link-editor, placeholder).

Demo (`web/routes/uix/components/words/+page.svelte`)
  - `orientations` const, `orientation` state, the chip-control UI,
    the `toolbarOrientation={orientation}` prop, and the corresponding
    line in the generated code snippet all removed.
  - Recipe-selector entry for `[data-orientation]` deleted.
  - A11y row text simplified.

Verified: `npm run check` clean (only pre-existing 6 errors unrelated);
soma words tests 152/152 pass. Eidos vertical CSS is gone end-to-end.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/uix/eidos/components/words/types.ts

@@ -20,8 +20,7 @@ import type {
 	WordsHeadingLevel,
 	WordsListKind,
 	WordsSlashCommandId,
-	WordsSlashCommandItem,
+	WordsSlashCommandItem
-	WordsToolbarOrientation
 } from '$soma/components/words';
 import type { ButtonRounded, ButtonSize, ButtonVariant } from '$uix/eidos/components/button';
 import type { ColorRole, ControlVariant, ResponsiveProp, Size } from '$uix/eidos/lib/types';
@@ -141,8 +140,6 @@ export type WordsProps = ProviderProps & {
 	color?: WordsColor;
 	/** Optional default toolbar renderer. Manual compound children still win for custom UI. */
 	toolbar?: WordsToolbarConfig;
-	/** Orientation for the toolbar rendered from the `toolbar` prop. @default 'horizontal' */
-	toolbarOrientation?: WordsToolbarOrientation;
 	/**
 	 * Toolbar layout strategy (`grouped` family popovers vs `inline` flat
 	 * commands). Accepts ResponsiveProp for breakpoint-aware switching —

src/uix/eidos/components/words/words-toolbar.svelte

@@ -5,7 +5,6 @@
 	import type { WordsToolbarProps } from './types';
 
 	let {
-		orientation = 'horizontal',
 		'aria-label': ariaLabel = 'Formatting toolbar',
 		children,
 		child: outerChild,
@@ -15,9 +14,9 @@
 	const toolbarAriaLabel = $derived(ariaLabel ?? undefined);
 </script>
 
-<Words.Toolbar {...rest} {orientation} aria-label={toolbarAriaLabel}>
+<Words.Toolbar {...rest} aria-label={toolbarAriaLabel}>
 	{#snippet child({ props: wordsProps })}
-		<Toolbar {orientation} aria-label={toolbarAriaLabel} size="sm" variant="ghost">
+		<Toolbar aria-label={toolbarAriaLabel} size="sm" variant="ghost">
 			{#snippet child({ props: toolbarProps })}
 				{@const props = mergeProps(toolbarProps, wordsProps)}
 				{#if outerChild}

src/uix/eidos/components/words/words.css

@@ -125,12 +125,6 @@
 	opacity: var(--words-disabled-opacity);
 }
 
-[data-words]:has([data-words-toolbar][data-orientation='vertical']) {
-	display: grid;
-	grid-template-columns: max-content minmax(0, 1fr);
-	grid-template-rows: auto auto;
-}
-
 /* ── Companion Drawer (right-rail) ───────────────────────────────────────
    Layout: when the editor host contains a [data-words-drawer], place
    the drawer in a dedicated right column that spans toolbar+content+
@@ -1022,10 +1016,6 @@
 	color: var(--words-threat-text);
 }
 
-[data-words]:has([data-words-toolbar][data-orientation='vertical']):has([data-words-find-replace]) {
-	grid-template-rows: auto auto auto;
-}
-
 [data-words-toolbar] {
 	/* Horizontal layout: single row with horizontal scroll on narrow
 	   viewports. Was previously `flex-wrap: wrap` which produced 2-3
@@ -1063,20 +1053,6 @@
    if the toolbar's intrinsic content fits, the mask still applies but
    is harmless (it fades empty space). Keeping for simplicity. */
 
-[data-words-toolbar][data-orientation='vertical'] {
-	grid-column: 1;
-	grid-row: 1;
-	flex-direction: column;
-	flex-wrap: nowrap;
-	align-items: stretch;
-	inline-size: max-content;
-	border-block-end: 0;
-	border-inline-end: var(--words-border-width) solid var(--words-toolbar-border);
-	overflow-x: visible;
-	overflow-y: auto;
-	mask-image: none;
-}
-
 [data-words-toolbar-group] {
 	display: inline-flex;
 	flex-wrap: nowrap;
@@ -1086,12 +1062,6 @@
 	flex-shrink: 0;
 }
 
-[data-words-toolbar-group][data-orientation='vertical'] {
-	flex-direction: column;
-	flex-wrap: nowrap;
-	align-items: stretch;
-}
-
 [data-words-bubble-menu] {
 	--_words-bubble-offset: var(--words-toolbar-py-md);
 	--_words-bubble-y-shift: calc(-100% - var(--_words-bubble-offset));
@@ -1677,15 +1647,6 @@
 	font-size: var(--words-status-font-size);
 }
 
-[data-words]:has([data-words-toolbar][data-orientation='vertical']) [data-words-link-editor] {
-	grid-template-columns: minmax(0, 1fr) auto;
-}
-
-[data-words]:has([data-words-toolbar][data-orientation='vertical']):has([data-words-link-editor])
-	[data-words-status] {
-	grid-row: 3;
-}
-
 [data-words-placeholder] {
 	display: block;
 	padding-block-start: var(--_words-content-py);
@@ -1694,12 +1655,6 @@
 	pointer-events: none;
 }
 
-[data-words]:has([data-words-toolbar][data-orientation='vertical']) [data-words-placeholder] {
-	grid-column: 2;
-	grid-row: 1;
-	z-index: 1;
-}
-
 [data-words-placeholder][hidden],
 [data-words-hidden-input][hidden] {
 	display: none;
@@ -1723,11 +1678,6 @@
 	-webkit-user-select: text;
 }
 
-[data-words]:has([data-words-toolbar][data-orientation='vertical']) [data-words-content] {
-	grid-column: 2;
-	grid-row: 1;
-}
-
 [data-words-placeholder]:not([hidden]) + [data-words-content] {
 	padding-block-start: var(--words-content-py-after-placeholder);
 }
@@ -2161,11 +2111,6 @@
 	font-size: var(--words-status-font-size);
 }
 
-[data-words]:has([data-words-toolbar][data-orientation='vertical']) [data-words-status] {
-	grid-column: 1 / -1;
-	grid-row: 2;
-}
-
 [data-words-status][data-status='error'] {
 	color: var(--words-status-error-color);
 }
@@ -2198,16 +2143,6 @@
 	color: var(--_words-accent-text);
 }
 
-[data-words]:has([data-words-toolbar][data-orientation='vertical']) [data-words-find-replace] {
-	grid-column: 1 / -1;
-	grid-row: 2;
-}
-
-[data-words]:has([data-words-toolbar][data-orientation='vertical']):has([data-words-find-replace])
-	[data-words-status] {
-	grid-row: 3;
-}
-
 [data-words-find-row],
 [data-words-replace-row] {
 	display: flex;

src/uix/eidos/components/words/words.svelte

@@ -32,7 +32,6 @@
 		variant = 'surface',
 		color = 'primary',
 		toolbar = false,
-		toolbarOrientation = 'horizontal',
 		toolbarLayout = 'grouped',
 		value = $bindable(),
 		selection = $bindable(null),
@@ -302,9 +301,9 @@
 
 	{#snippet children(snippetProps)}
 		{#if visibleToolbarGroups.length}
-			<Toolbar orientation={toolbarOrientation} aria-label="Formatting toolbar">
+			<Toolbar aria-label="Formatting toolbar">
 				{#each visibleToolbarGroups as group}
-					<ToolbarGroup orientation={toolbarOrientation}>
+					<ToolbarGroup>
 						{#each group as item}
 							{#if isToolbarFamilyConfig(item)}
 								{#if resolvedToolbarLayout === 'inline'}

src/uix/morfo/components/words.ts

@@ -381,13 +381,13 @@ export const wordsMorfo = {
 			data: [
 				{
 					attr: 'data-orientation',
-					values: ['horizontal', 'vertical'],
+					values: ['horizontal'],
-					value: v.propRef('orientation')
+					value: v.literal('horizontal')
 				},
 				{ attr: 'data-disabled', value: v.propRef('disabled'), severity: 'optional' }
 			],
 			aria: [
-				{ attr: 'aria-orientation', value: v.propRef('orientation') },
+				{ attr: 'aria-orientation', value: v.literal('horizontal') },
 				{
 					attr: 'aria-label',
 					value: v.translationRef('#?components.words.toolbar|Editor toolbar'),
@@ -406,8 +406,8 @@ export const wordsMorfo = {
 			data: [
 				{
 					attr: 'data-orientation',
-					values: ['horizontal', 'vertical'],
+					values: ['horizontal'],
-					value: v.propRef('orientation')
+					value: v.literal('horizontal')
 				}
 			],
 			aria: []

src/uix/soma/components/words/exports.ts

@@ -21,7 +21,6 @@ export type {
 	WordsSlashCommandId,
 	WordsSlashCommandItem,
 	WordsStatus,
-	WordsToolbarOrientation,
 	WordsProps as ProviderProps,
 	WordsContentProps as ContentProps,
 	WordsPlaceholderProps as PlaceholderProps,

src/uix/soma/components/words/types.ts

@@ -24,7 +24,6 @@ import type {
 
 export type WordsSelectionKind = 'none' | 'collapsed' | 'range';
 export type WordsStatus = 'idle' | 'error';
-export type WordsToolbarOrientation = 'horizontal' | 'vertical';
 export type WordsCommitReason = 'programmatic' | 'blur' | 'button';
 export type WordsBubbleMenuSide = 'top' | 'bottom';
 export type WordsSlashCommandId =
@@ -313,13 +312,11 @@ export type WordsPlaceholderProps = WithChild<{ id?: string }> &
 
 export type WordsToolbarProps = WithChild<{
 	id?: string;
-	orientation?: WordsToolbarOrientation;
 }> &
 	Without<PrimitiveDivAttributes, { role?: unknown; 'aria-orientation'?: unknown }>;
 
 export type WordsToolbarGroupProps = WithChild<{
 	id?: string;
-	orientation?: WordsToolbarOrientation;
 }> &
 	Without<PrimitiveDivAttributes, { role?: unknown }>;
 

src/uix/soma/components/words/words-provider.svelte.ts

@@ -22,8 +22,7 @@ import type {
 	WordsSelectionKind,
 	WordsSlashCommandId,
 	WordsSlashCommandItem,
-	WordsStatus,
+	WordsStatus
-	WordsToolbarOrientation
 } from './types';
 import {
 	actionFromBeforeInput,
@@ -98,10 +97,8 @@ interface WordsOpts
 
 interface WordsContentOpts extends WithRefOpts {}
 interface WordsPlaceholderOpts extends WithRefOpts {}
-interface WordsToolbarOpts
+interface WordsToolbarOpts extends WithRefOpts {}
-	extends WithRefOpts, ActiveProps<{ orientation: WordsToolbarOrientation }> {}
+interface WordsToolbarGroupOpts extends WithRefOpts {}
-interface WordsToolbarGroupOpts
-	extends WithRefOpts, ActiveProps<{ orientation: WordsToolbarOrientation }> {}
 interface WordsBubbleMenuOpts extends WithRefOpts, ActiveProps<{ side: WordsBubbleMenuSide }> {}
 interface WordsSlashMenuOpts extends WithRefOpts {}
 interface WordsCommandButtonOpts
@@ -1833,7 +1830,6 @@ export class WordsToolbarProvider {
 			ref: opts.ref,
 			owner: this,
 			props: {
-				orientation: () => this.opts.orientation.current,
 				disabled: () => this.provider.isDisabled
 			},
 			syncAttrs: true
@@ -1843,8 +1839,7 @@ export class WordsToolbarProvider {
 	readonly props = $derived.by(() =>
 		this.runtimePart.assert({
 			...this.runtimePart.props,
-			role: 'toolbar' as const,
+			role: 'toolbar' as const
-			'aria-orientation': this.opts.orientation.current
 		} as const)
 	);
 }
@@ -1865,9 +1860,7 @@ export class WordsToolbarGroupProvider {
 			id: opts.id,
 			ref: opts.ref,
 			owner: this,
-			props: {
+			props: {},
-				orientation: () => this.opts.orientation.current
-			},
 			syncAttrs: true
 		});
 	}

web/routes/uix/components/words/+page.svelte

@@ -18,8 +18,7 @@
 		WordsExportFormat,
 		WordsInline,
 		WordsImportFormat,
-		WordsSelection,
+		WordsSelection
-		WordsToolbarOrientation
 	} from '$soma/components/words';
 	import {
 		parseWordsHtml,
@@ -92,7 +91,6 @@
 		'threat',
 		'loss'
 	];
-	const orientations: WordsToolbarOrientation[] = ['horizontal', 'vertical'];
 	const presets: DocumentPreset[] = ['sample', 'empty', 'long'];
 	const exportFormats: WordsExportFormat[] = ['json', 'text', 'html', 'markdown'];
 	const importFormats: WordsImportFormat[] = ['json', 'text', 'html', 'markdown'];
@@ -193,7 +191,6 @@
 	let showSlashMenu = $state(true);
 	let showStatus = $state(true);
 	let showDrawer = $state(true);
-	let orientation = $state<WordsToolbarOrientation>('horizontal');
 	let toolbarLayout = $state<'grouped' | 'inline'>('grouped');
 	let size = $state<WordsSize>('md');
 	let variant = $state<WordsVariant>('surface');
@@ -236,7 +233,7 @@
 
 	const somaBodyLines = $derived(
 		[
-			...somaToolbarSnippet(toolbarSnippetGroups, orientation),
+			...somaToolbarSnippet(toolbarSnippetGroups),
 			...(somaUsesCodeLanguagePicker ? somaCodeLanguageSnippet() : []),
 			...(showLinkEditor && toolbarChoice === 'none' ? somaLinkEditorSnippet() : []),
 			showFindReplace && toolbarChoice === 'none' && '  <Words.FindReplace />',
@@ -297,7 +294,6 @@
 			color !== 'primary' && `  color="${color}"`,
 			toolbarChoice !== 'none' && `  toolbar={${JSON.stringify(toolbarSnippetGroups)}}`,
 			toolbarChoice === 'none' && '  toolbar={false}',
-			orientation !== 'horizontal' && `  toolbarOrientation="${orientation}"`,
 			disabled && '  disabled',
 			readonly && '  readonly',
 			required && '  required',
@@ -333,12 +329,6 @@
 		{ selector: '[data-words][data-focused]', source: 'morfo', kind: 'soma', note: 'focus ring' },
 		{ selector: '[data-words][data-invalid]', source: 'morfo', kind: 'soma', note: 'risk border' },
 		{ selector: '[data-words-toolbar]', source: 'morfo', kind: 'soma', note: 'toolbar shell' },
-		{
-			selector: '[data-words-toolbar][data-orientation]',
-			source: 'morfo',
-			kind: 'soma',
-			note: 'toolbar axis'
-		},
 		{
 			selector: '[data-words-command-button][data-state]',
 			source: 'morfo',
@@ -782,10 +772,7 @@
 		return JSON.stringify(value);
 	}
 
-	function somaToolbarSnippet(
+	function somaToolbarSnippet(groups: readonly WordsToolbarGroupConfig[]): string[] {
-		groups: readonly WordsToolbarGroupConfig[],
-		toolbarOrientation: WordsToolbarOrientation
-	): string[] {
 		if (groups.length === 0) return [];
 		const expandedGroups = groups.map((group) => group.flatMap(expandToolbarItem));
 		const toolbarGroups = expandedGroups
@@ -795,7 +782,7 @@
 		return [
 			...(toolbarGroups.length
 				? [
-						`  <Words.Toolbar orientation="${toolbarOrientation}">`,
+						'  <Words.Toolbar>',
 						...toolbarGroups.flatMap((group) => [
 							'    <Words.ToolbarGroup>',
 							...group.flatMap((command) => somaCommandSnippet(command)),
@@ -1037,7 +1024,6 @@
 				{variant}
 				{color}
 				toolbar={toolbarConfig}
-				toolbarOrientation={orientation}
 				{toolbarLayout}
 				onValueCommit={(_, reason) => (lastCommit = reason)}
 			>
@@ -1181,20 +1167,6 @@
 						{/each}
 					</span>
 				</label>
-				<label data-uix-control>
-					<span data-uix-control-label>toolbar orientation</span>
-					<span data-uix-chips role="radiogroup">
-						{#each orientations as item}
-							<button
-								data-uix-chip
-								data-active={orientation === item}
-								onclick={() => (orientation = item)}
-							>
-								{item}
-							</button>
-						{/each}
-					</span>
-				</label>
 				<label data-uix-control>
 					<span data-uix-control-label>export format</span>
 					<span data-uix-chips role="radiogroup">
@@ -1787,7 +1759,7 @@
 						>
 						<tr
 							><td class="name">Toolbar</td><td
-								><code>role="toolbar"</code> with orientation propagated to ARIA.</td
+								><code>role="toolbar"</code> with <code>aria-orientation="horizontal"</code>.</td
 							></tr
 						>
 						<tr