feat(soma): wire runtime.trigger for batch B (8 components)

Continúa batch A. Estos 8 componentes tienen scope:sema y events
declarados pero no usan pack propio — emiten sobre family base.

- listbox: select() central → commit-select / commit-unselect en item.
- grid-list: select() central → idem en row.
- table:
  - SortTrigger.onclick/onkeydown → commit-set-sort en column-header.
  - Row.onclick/onkeydown → commit-select en row.
  - RowDetailTrigger → emerge-expand-row en row (solo transición
    closed → open; el morfo no declara collapse counterpart).
- feed:
  - focusAt() (centraliza navegación de teclado) → shift-navigate-focus-item
    en article.
  - PageDown-en-final + Sentinel.onIntersect → commit-submit-load-more
    en provider.
- command:
  - Item.onclick → commit-submit-invoke en item (path mouse).
  - selectCurrent() (Enter key) → commit-submit-invoke vía lookup
    por data-value en provider ref.
- carousel: commit() central (next/prev/goto/autoplay) →
  shift-navigate-slide en item, lookup por data-index.
- announce: announce() → signal-alert (assertive) o signal-announce
  (polite). clear() → commit-reset.
- clipboard: copy() acepta optional triggerEl → commit-save-copy
  (success) / commit-fail-copy (catch). Trigger.onclick pasa
  e.currentTarget.

Verificación:
- npm run morfo:vocabulary → EXIT 0
- npx vitest run src/uix/sema src/uix/morfo → 195/195 pass
- npx vitest run src/uix/soma → 419/419 pass

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

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

@@ -84,6 +84,10 @@ export class AnnounceProvider {
 			return;
 		}
 		const clearAfter = timeout ?? this.opts.defaultTimeout.current;
+		// Morfo declares signal-announce (polite) and signal-alert
+		// (assertive) on `provider`. Fire here — the runtimePart auto-
+		// resolves the provider element.
+		void this.runtime.trigger(priority === 'assertive' ? 'signal-alert' : 'signal-announce');
 
 		if (priority === 'assertive') {
 			// Alternate between A/B so that identical consecutive messages
@@ -137,6 +141,9 @@ export class AnnounceProvider {
 		this.assertiveA = '';
 		this.assertiveB = '';
 		this.clearTimers();
+		// Morfo: commit-reset on `provider`. Programmatic clear of the
+		// live regions — the channel still gets a chance to react.
+		void this.runtime.trigger('commit-reset');
 	};
 
 	private clearPoliteTimer() {

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

@@ -280,6 +280,16 @@ export class CarouselProvider {
 		if (target === this.opts.value.current) return;
 		this.opts.value.current = target;
 		this.opts.onValueChange.current?.(target);
+		// Morfo: shift-navigate-slide on `item`. Resolve the slide element
+		// by data-index so the cascade matches the specific item that
+		// became active (next/prev/goto/autoplay all flow through this
+		// central commit method).
+		const slideEl = this.opts.ref?.current?.querySelector<HTMLElement>(
+			`[${attrs.item}][data-index="${target}"]`
+		);
+		if (slideEl) {
+			void this.runtime.trigger('shift-navigate-slide', { fallbackTarget: slideEl });
+		}
 	}
 
 	/** Mark this navigation as user-driven so `stopOnInteraction` can latch. */

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

@@ -64,13 +64,22 @@ export class ClipboardProvider {
 	 * Copy the current value. Returns a promise that resolves when the
 	 * clipboard write finishes (or rejects if the API throws / is missing).
 	 * Also schedules a `copied=false` reset after `timeout` ms.
+	 *
+	 * Optional `triggerEl` lets the caller (typically a ClipboardTrigger)
+	 * pass its own DOM ref so the morfo `commit-save-copy` / `commit-fail-copy`
+	 * events stamp on the actual button. Without it the runtime falls back
+	 * to no target (sound/haptic still play; visual stamp skipped).
 	 */
-	copy = async (): Promise<void> => {
+	copy = async (triggerEl?: HTMLElement): Promise<void> => {
 		const value = this.opts.value.current;
 		try {
 			await this.soma.uix.clipboard.writeText(value);
 			this.copied = true;
 			this.opts.onCopy.current?.(value);
+			void this.runtime.trigger(
+				'commit-save-copy',
+				triggerEl ? { fallbackTarget: triggerEl } : undefined
+			);
 
 			this.clearResetTimer();
 			this.resetTimer = this.soma.uix.timers.schedule(
@@ -84,6 +93,10 @@ export class ClipboardProvider {
 			);
 		} catch (err) {
 			this.opts.onError.current?.(err);
+			void this.runtime.trigger(
+				'commit-fail-copy',
+				triggerEl ? { fallbackTarget: triggerEl } : undefined
+			);
 			throw err;
 		}
 	};
@@ -150,8 +163,8 @@ export class ClipboardTriggerProvider {
 			: this.provider.soma.langs.ts(CLIPBOARD_LANGS.COPY);
 	});
 
-	readonly onclick = (_e: SomaMouseEvent<HTMLButtonElement>) => {
-		this.provider.copy().catch(() => {
+	readonly onclick = (e: SomaMouseEvent<HTMLButtonElement>) => {
+		this.provider.copy(e.currentTarget).catch(() => {
 			// onError already fired from the provider; swallow here to avoid
 			// unhandled-rejection noise on button click.
 		});

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

@@ -377,6 +377,15 @@ export class CommandProvider {
 		const entry = this.findItem(value);
 		if (!entry || entry.disabled || !this.isVisible(value)) return;
 		this.onSelectHandlers.get(value)?.(value);
+		// Morfo: commit-submit-invoke on `item`. Look up the item element
+		// by data-value so the cascade matches this specific item (Enter
+		// key path — onclick handler emits independently for mouse path).
+		const itemEl = this.opts.ref?.current?.querySelector<HTMLElement>(
+			`[${attrs.item}][data-value="${CSS.escape(value)}"]`
+		);
+		if (itemEl) {
+			void this.runtime.trigger('commit-submit-invoke', { fallbackTarget: itemEl });
+		}
 	}
 
 	private onSelectHandlers = new Map<string, (v: string) => void>();
@@ -682,10 +691,15 @@ export class CommandItemProvider {
 	readonly isSelected = $derived.by(() => this.provider.isSelected(this.opts.value.current));
 	readonly isVisible = $derived.by(() => this.provider.visibleSet.has(this.opts.value.current));
 
-	readonly onclick = (_e: SomaMouseEvent<HTMLElement>) => {
+	readonly onclick = (e: SomaMouseEvent<HTMLElement>) => {
 		if (this.opts.disabled.current) return;
 		this.provider.setValue(this.opts.value.current);
 		this.opts.onSelect.current?.(this.opts.value.current);
+		// Morfo: commit-submit-invoke on `item` (affirm). Fire with the
+		// clicked element so the cascade matches this specific item.
+		void this.provider.runtime.trigger('commit-submit-invoke', {
+			fallbackTarget: e.currentTarget
+		});
 	};
 
 	readonly onpointermove = () => {

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

@@ -94,7 +94,14 @@ export class FeedProvider {
 		const articles = this.getArticles();
 		if (articles.length === 0) return;
 		const clamped = Math.max(0, Math.min(articles.length - 1, index));
-		this.soma.dom.focus(articles[clamped]);
+		const article = articles[clamped];
+		this.soma.dom.focus(article);
+		// Morfo: shift-navigate-focus-item on `article`. Fired on every
+		// keyboard navigation step that moves focus to a different
+		// article (Page Up/Down, Ctrl+Home/End).
+		if (article) {
+			void this.runtime.trigger('shift-navigate-focus-item', { fallbackTarget: article });
+		}
 	}
 
 	/** Fired on the feed root (capture Page nav) and on articles (for end-of-feed). */
@@ -110,6 +117,9 @@ export class FeedProvider {
 			if (currentIndex >= articles.length - 1) {
 				// End of feed — request more.
 				this.opts.onLoadMore.current?.();
+				// Morfo: commit-submit-load-more on `provider`. The
+				// provider's own runtimePart auto-resolves the target.
+				void this.runtime.trigger('commit-submit-load-more');
 				return;
 			}
 			this.focusAt(currentIndex + 1);
@@ -440,6 +450,12 @@ export class FeedSentinelProvider {
 						if (entry.isIntersecting) {
 							const handler = opts.onIntersect.current ?? this.feed?.opts.onLoadMore.current;
 							handler?.();
+							// Morfo: commit-submit-load-more on `provider`.
+							// Sentinel scroll-into-view path mirrors the
+							// keyboard PageDown-at-end path.
+							if (this.feed) {
+								void this.feed.runtime.trigger('commit-submit-load-more');
+							}
 						}
 					}
 				},

src/uix/soma/components/grid-list/grid-list-provider.svelte.ts

@@ -145,6 +145,7 @@ export class GridListProvider {
 		const selectionMode = this.opts.selectionMode.current;
 		if (selectionMode === 'none') return;
 		const current = this.opts.value.current;
+		const wasSelected = current.includes(value);
 
 		let next: string[];
 		if (mode === 'range' && selectionMode === 'multiple' && this.anchor) {
@@ -159,6 +160,22 @@ export class GridListProvider {
 		if (next !== current) {
 			this.opts.value.current = next;
 			this.opts.onValueChange.current?.(next);
+			// Morfo: commit-select / commit-unselect on `row`. Detect
+			// direction via prior inclusion; lookup row by data-value.
+			const isNowSelected = next.includes(value);
+			const eventName = isNowSelected
+				? 'commit-select'
+				: wasSelected
+					? 'commit-unselect'
+					: null;
+			if (eventName) {
+				const rowEl = this.opts.ref?.current?.querySelector<HTMLElement>(
+					`[${attrs.row}][data-value="${CSS.escape(value)}"]`
+				);
+				if (rowEl) {
+					void this.runtime.trigger(eventName, { fallbackTarget: rowEl });
+				}
+			}
 		}
 		if (mode !== 'range') this.anchor = value;
 	}

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

@@ -151,6 +151,7 @@ export class ListboxProvider {
 		const current = this.opts.value.current;
 		const selectionMode = this.opts.selectionMode.current;
 		const effectiveMode = mode ?? (selectionMode === 'single' ? 'replace' : 'toggle');
+		const wasSelected = current.includes(value);
 
 		let next: string[];
 		if (effectiveMode === 'replace') {
@@ -168,6 +169,24 @@ export class ListboxProvider {
 		if (next !== current) {
 			this.opts.value.current = next;
 			this.opts.onValueChange.current?.(next);
+			// Morfo: commit-select / commit-unselect on `item`. Detect
+			// direction by checking next inclusion vs prior. Look up the
+			// item element by data-value so the cascade matches this
+			// specific item (multiple items registered under same kebab).
+			const isNowSelected = next.includes(value);
+			const eventName = isNowSelected
+				? 'commit-select'
+				: wasSelected
+					? 'commit-unselect'
+					: null;
+			if (eventName) {
+				const itemEl = this.opts.ref?.current?.querySelector<HTMLElement>(
+					`[${attrs.item}][data-value="${CSS.escape(value)}"]`
+				);
+				if (itemEl) {
+					void this.runtime.trigger(eventName, { fallbackTarget: itemEl });
+				}
+			}
 		}
 	}
 

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

@@ -215,6 +215,11 @@ export class TableSortTriggerProvider {
 		// click-handling parents without surprises.
 		e.stopPropagation();
 		this.table.toggleSort(this.header.id, e.shiftKey);
+		// Morfo: commit-set-sort on `column-header`. Trigger is inside
+		// the column-header; closest() resolves the ancestor for the
+		// cascade selector.
+		const target = e.currentTarget as HTMLElement;
+		void this.provider.runtime.trigger('commit-set-sort', { fallbackTarget: target });
 	};
 
 	readonly onkeydown = (e: SomaKeyboardEvent) => {
@@ -223,6 +228,8 @@ export class TableSortTriggerProvider {
 			e.preventDefault();
 			e.stopPropagation();
 			this.table.toggleSort(this.header.id, e.shiftKey);
+			const target = e.currentTarget as HTMLElement;
+			void this.provider.runtime.trigger('commit-set-sort', { fallbackTarget: target });
 		}
 	};
 
@@ -292,6 +299,12 @@ export class TableRowProvider {
 	readonly onclick = () => {
 		if (this.table.selectionMode !== 'none') {
 			this.table.toggleRowSelection(this.row.id);
+			// Morfo: commit-select on `row`. Pass this row's ref so the
+			// cascade matches the specific row, not the most-recent one.
+			const rowEl = this.opts.ref?.current;
+			if (rowEl) {
+				void this.provider.runtime.trigger('commit-select', { fallbackTarget: rowEl });
+			}
 		}
 	};
 
@@ -300,6 +313,10 @@ export class TableRowProvider {
 			if (this.table.selectionMode !== 'none') {
 				e.preventDefault();
 				this.table.toggleRowSelection(this.row.id);
+				const rowEl = this.opts.ref?.current;
+				if (rowEl) {
+					void this.provider.runtime.trigger('commit-select', { fallbackTarget: rowEl });
+				}
 			}
 		}
 	};
@@ -549,14 +566,27 @@ export class TableRowDetailTriggerProvider {
 	readonly onclick = (e: MouseEvent) => {
 		// Prevent the row's own onclick (selection) from firing.
 		e.stopPropagation();
+		const wasOpen = this.provider.table.getIsRowDetailOpen(this.row.id);
 		this.provider.table.toggleRowDetail(this.row.id);
+		// Morfo only declares `emerge-expand-row` (no collapse counterpart).
+		// Fire only on the closed → open transition. Trigger lives inside
+		// the row; closest() resolves the row ancestor for the cascade.
+		if (!wasOpen) {
+			const target = e.currentTarget as HTMLElement;
+			void this.provider.runtime.trigger('emerge-expand-row', { fallbackTarget: target });
+		}
 	};
 
 	readonly onkeydown = (e: KeyboardEvent) => {
 		if (e.key === KEYS.SPACE || e.key === KEYS.ENTER) {
 			e.preventDefault();
 			e.stopPropagation();
+			const wasOpen = this.provider.table.getIsRowDetailOpen(this.row.id);
 			this.provider.table.toggleRowDetail(this.row.id);
+			if (!wasOpen) {
+				const target = e.currentTarget as HTMLElement;
+				void this.provider.runtime.trigger('emerge-expand-row', { fallbackTarget: target });
+			}
 		}
 	};