feat(words): comfortable reading scale for the content surface

The editor used UI-cramped metrics (14px / 1.25 line-height / 8px block
gap) which read as a form field, not a document. Give the CONTENT (not
the chrome) a reading scale: body 14→16px, line-height 1.25→1.6, block
gap space-2→space-3 (headings derive 1.5x for top margin). Chrome keeps
its smaller --_words-font-size.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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

@@ -1765,6 +1765,12 @@
 	padding-inline-start: var(--_words-gutter-size);
 	padding-inline-end: var(--_words-content-px);
 	color: var(--words-content-color);
+	/* Comfortable reading scale for the writing surface — a touch larger
+	 * and noticeably airier than the UI chrome (which keeps the smaller
+	 * --_words-font-size + tight line-height). This is what turns the
+	 * surface from "cramped form field" into "document". */
+	font-size: calc(var(--_words-font-size) + 2px);
+	line-height: 1.6;
 	/* Thin silver band (rail-width) with a 1px slightly-stronger right
 	 * edge, then transparent through the gap to the text. Background
 	 * only — does not disturb the contenteditable text/selection. */

src/uix/eidos/generated/base.css

@@ -2285,7 +2285,7 @@
 	--words-rail-bg: #f5f5f5;
 	--words-rail-border: #e3e3e3;
 	--words-selection-color: var(--color-content-primary);
-	--words-block-gap: var(--space-2);
+	--words-block-gap: var(--space-3);
 	--words-heading-color: var(--color-content-primary);
 	--words-heading-font-size: var(--font-size-lg);
 	--words-heading-h1-font-size: var(--font-size-xl);

src/uix/eidos/lib/recipes/base.ts

@@ -2726,7 +2726,10 @@ export const THEME_BASE_RECIPE_TOKENS = {
 		'rail-bg': '#f5f5f5',
 		'rail-border': '#e3e3e3',
 		'selection-color': 'var(--color-content-primary)',
-		'block-gap': 'var(--space-2)',
+		// Document rhythm: airier than the default UI gap so blocks read
+		// as paragraphs in a document, not stacked form rows. Headings
+		// derive 1.5x of this for their top margin.
+		'block-gap': 'var(--space-3)',
 		'heading-color': 'var(--color-content-primary)',
 		'heading-font-size': 'var(--font-size-lg)',
 		'heading-h1-font-size': 'var(--font-size-xl)',