fix(words): trim the gutter rail to 1.5rem (~24px)

Previous 2.5rem (~40px) made the content's left padding total ~56px
which felt excessive — the band was very wide and the grip looked
lost in the middle of it. Trim to 1.5rem so the total padding is
~40px on the rail side: tight enough that the 28×28 grip occupies
most of the band (content.left+8 → +36) with just enough breathing
room (4 px) before the text starts. Same Notion-style density.

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

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

@@ -6,9 +6,10 @@
 	--_words-content-min-block-size: var(--words-content-min-block-size-md);
 	/* Gutter reserved for the block-handle grip + inserter "+" overlay.
 	   Content is padded by this much on the side OPPOSITE to the drawer
-	   so the floating overlays have a visible band to land in. ~40px
-	   fits a 28×28 hit area with 12px breathing room before the text. */
-	--_words-rail-px: 2.5rem;
+	   so the floating overlays have a visible band to land in. 1.5rem
+	   (≈24px) added to the existing content-px (16px) gives ~40px total
+	   on that side — just enough for a 28×28 hit area, no waste. */
+	--_words-rail-px: 1.5rem;
 	--_words-toolbar-px: var(--words-toolbar-px-md);
 	--_words-toolbar-py: var(--words-toolbar-py-md);
 	--_words-button-size: var(--words-button-size-md);