chore: add new lint rule - check hardcoded text

web/eslint-plugins/i18n/lists.js

@@ -0,0 +1,19 @@
+// Lists shared by the i18n rules.
+
+// Attributes whose string value is shown to a user, so a literal there is
+// hardcoded copy. Technical attributes (variant, tone, type, icon, size, role,
+// href, id, class, name) are deliberately absent.
+export const USER_TEXT_ATTRS = new Set([
+	"alt",
+	"aria-label",
+	"description",
+	"emptyText",
+	"error",
+	"eyebrow",
+	"hint",
+	"label",
+	"placeholder",
+	"suffix",
+	"title",
+	"unit",
+]);