fix(words): column Add-block menu (one per kind, localized) + allow empty column

Two bugs in the column inspector's "Add block" flow:

1. Wrong options + untranslated. The menu rendered
   `defaultWordsSchema.insertable()` — the flattened menu ENTRIES, which
   expand heading → "Heading 1/2/3" and list → "Bulleted/Numbered/Check"
   with hard-coded English labels. Now it lists one entry per block KIND
   from `schema.all()` (paragraph / heading / quote / code / list / table /
   divider / callout), labelled via `blockKindLabel(type)` → fully
   localized ("Texto", "Encabezado", "Lista con viñetas", …). The exact
   level / list-kind is tuned afterward in that block's own panel. Inserts
   the kind's default via `spec.menu[0].create()`. Excludes `columns`
   (no columns-in-columns) and `image` (insertable:false — needs a URL).

2. Couldn't leave a column empty. `deleteChildInColumn` re-seeded an empty
   paragraph when the last block was removed ("must stay typable"). But an
   empty column is a valid, supported state — the engine renders the
   wrapper with `data-words-id` so it stays clickable, and neither the
   validator nor `normalizeColumns` re-seeds it (only the doc root + lists
   do). Removed the re-seed; deleting the last block now leaves the column
   genuinely empty.

Also added the 5 missing column-panel aria bundle entries
(select/delete/move-up/move-down/add-block-to-column-n) so the block-list
buttons read in ES instead of the English fallback.

Verified in the browser: menu shows 8 localized kinds (1 heading, 1 list,
no "Heading 1"); deleting the last column block → child count 0, no reseed,
column still clickable; aria-labels localized. npm run check 1 pre-existing
error (grafito, not Words) · words soma 452/452 · prettier clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/uix/eidos/components/words/langs-inspector.ts

@@ -379,6 +379,14 @@ export const WORDS_INSPECTOR_BUNDLE = {
 		'remove-column': { en: 'Delete column', es: 'Eliminar columna' },
 		'add-column-end': { en: 'Add column at end', es: 'Añadir columna al final' },
 		'remove-column-n': { en: 'Remove column {n}', es: 'Eliminar columna {n}' },
+		'add-block-to-column-n': {
+			en: 'Add block to column {n}',
+			es: 'Añadir bloque a la columna {n}'
+		},
+		'select-block-in-column': { en: 'Select this block', es: 'Seleccionar este bloque' },
+		'delete-block-in-column': { en: 'Delete this block', es: 'Eliminar este bloque' },
+		'move-block-up': { en: 'Move block up', es: 'Subir el bloque' },
+		'move-block-down': { en: 'Move block down', es: 'Bajar el bloque' },
 		'header-row': { en: 'Toggle header row', es: 'Alternar fila de cabecera' },
 		'header-column': { en: 'Toggle header column', es: 'Alternar columna de cabecera' },
 		'cell-align': {

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

@@ -43,7 +43,7 @@
 		type ProviderSnippetProps,
 		type WordsAncestryNode,
 		type WordsBlock,
-		type WordsBlockMenuEntry
+		type WordsBlockSpec
 	} from '$soma/components/words';
 
 	// Any node the inspector can edit visual props on: a typed block OR a
@@ -86,11 +86,25 @@
 	// paints on the active-block outline — the two surfaces read in agreement.
 	const depth = $derived(Math.min(Math.max(activeLoc?.path.length ?? 1, 1), 4));
 
-	// Insertable block types for the active-column "Add block" menu — same
+	// Block TYPES offered in the active-column "Add block" menu. We list one
-	// catalog the gutter / slash menu use, minus `columns` (a column is a
+	// entry per block KIND (from `schema.all()`), NOT the expanded menu
-	// nested Stack and can't hold another columns block).
+	// entries (`schema.insertable()` flattens heading → H1/H2/H3 and list →
-	const columnInsertableEntries = $derived(
+	// bulleted/numbered/check, with hard-coded English labels). The column
-		defaultWordsSchema.insertable().filter((entry) => entry.id !== 'columns')
+	// inserter only needs "add a heading" / "add a list" — the precise level
+	// / kind is then tuned in that block's own inspector panel. Excludes:
+	//   - `columns` — a column is a nested Stack; no columns-in-columns.
+	//   - `image`   — its spec is `insertable: false` (needs a URL / upload
+	//                 flow first), matching the slash menu's exclusion.
+	// Labels come from `blockKindLabel(type)` → fully localized.
+	const columnInsertableSpecs = $derived(
+		defaultWordsSchema.all().filter(
+			(spec) =>
+				spec.type !== 'columns' &&
+				spec.type !== 'image' &&
+				// Must expose at least one menu entry whose `create()` builds
+				// the default instance of the kind.
+				(spec.menu?.length ?? 0) > 0
+		)
 	);
 
 	// Label for a child block in the active-column block list.
@@ -109,12 +123,13 @@
 
 	// Insert a block into the active column and auto-activate it (soma owns
 	// active-block: `insertBlockInColumn` sets it from the pre-assigned id).
-	function insertIntoActiveColumn(
+	// `spec.create()` builds a fresh, default instance of the block kind
-		colsIdx: number,
+	// (paragraph / heading-1 / bulleted list / …); the user refines level /
-		colIdx: number,
+	// kind afterwards in that block's inspector panel.
-		entry: WordsBlockMenuEntry
+	function insertIntoActiveColumn(colsIdx: number, colIdx: number, spec: WordsBlockSpec): void {
-	): void {
+		// The spec's FIRST menu entry is the kind's default (heading → H1,
-		const newBlock = entry.create();
+		// list → bulleted); `create()` lives on the entry, not the spec.
+		const newBlock = spec.menu?.[0]?.create();
 		if (!newBlock) return;
 		const newId = crypto.randomUUID();
 		api.applyCommand({
@@ -126,18 +141,19 @@
 	}
 
 	// Remove a child block from the active column (immutable rebuild via
-	// the path-aware update op). A column must stay typable, so removing
+	// the path-aware update op). An EMPTY column is a valid, supported state
-	// the last block reseeds an empty paragraph.
+	// — the engine renders the column wrapper with `data-words-id` so it
+	// stays clickable / addressable even with zero children, and neither the
+	// validator nor `normalizeColumns` re-seeds it (only the document root
+	// and lists do). So deleting the last block leaves the column genuinely
+	// empty; we don't reinsert a placeholder paragraph.
 	function deleteChildInColumn(
 		colsIdx: number,
 		colIdx: number,
 		childIdx: number,
 		children: readonly WordsBlock[]
 	): void {
-		let next = children.filter((_, i) => i !== childIdx);
+		const next = children.filter((_, i) => i !== childIdx);
-		if (next.length === 0) {
-			next = [{ type: 'paragraph', children: [{ type: 'text', text: '' }] }];
-		}
 		api.applyCommand({
 			type: 'updateBlockAtPath',
 			blockPath: [colsIdx, colIdx],
@@ -468,11 +484,11 @@
 									</DropdownMenu.Trigger>
 									<DropdownMenu.Portal>
 										<DropdownMenu.Content side="bottom" align="start">
-											{#each columnInsertableEntries as entry (entry.id)}
+											{#each columnInsertableSpecs as spec (spec.type)}
 												<DropdownMenu.Item
-													onSelect={() => insertIntoActiveColumn(colsIdx, colIdx, entry)}
+													onSelect={() => insertIntoActiveColumn(colsIdx, colIdx, spec)}
 												>
-													{entry.label}
+													{blockKindLabel(spec.type)}
 												</DropdownMenu.Item>
 											{/each}
 										</DropdownMenu.Content>
@@ -500,7 +516,8 @@
 									attached
 									block
 									value={[block.fontFamily ?? 'default']}
-									onValueChange={(v: string[]) => edit({ fontFamily: !v[0] || v[0] === 'default' ? undefined : v[0] })}
+									onValueChange={(v: string[]) =>
+										edit({ fontFamily: !v[0] || v[0] === 'default' ? undefined : v[0] })}
 									aria-label={t(L.ARIA_FONT_FAMILY)}
 								>
 									{#each FONTS as f (f.v)}
@@ -587,7 +604,8 @@
 									attached
 									block
 									value={[block.align ?? 'left']}
-									onValueChange={(v: string[]) => edit({ align: !v[0] || v[0] === 'left' ? undefined : (v[0] as AlignValue) })}
+									onValueChange={(v: string[]) =>
+										edit({ align: !v[0] || v[0] === 'left' ? undefined : (v[0] as AlignValue) })}
 									aria-label={t(L.ARIA_ALIGN)}
 								>
 									{#each ALIGNS as a (a.v)}