milestone 23: correct three comments the s1 review found inaccurate

web/src/ui/styles.ts

@@ -172,8 +172,11 @@ export const styles = stylex.create({
 		overflowX: "auto",
 	},
 	/**
-	 * `space-y-3` became a flex column with a gap: same rendered rhythm, and it
-	 * does not depend on sibling margin collapsing.
+	 * Not a faithful port: `space-y-3` set sibling margins on a block container,
+	 * this is a flex formatting context. StyleX has no way to write the `> * + *`
+	 * selector that `space-y` compiles to, so the rhythm can only come from
+	 * `gap`. Child sizing and margin behaviour differ from the Tailwind original;
+	 * both call sites are plain vertical form stacks, where they do not.
 	 */
 	formCard: {
 		display: "flex",