Restore pointer cursor on buttons (Tailwind v4 Preflight reset)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app.css

@@ -1,3 +1,24 @@
 @import 'tailwindcss';
 
 @custom-variant dark (&:where(.dark, .dark *));
+
+/* Tailwind v4's Preflight removes cursor:pointer from buttons — restore the expected UX. */
+@layer base {
+	button:not(:disabled),
+	[role='button']:not(:disabled),
+	summary,
+	label[for],
+	select:not(:disabled),
+	input[type='submit']:not(:disabled),
+	input[type='reset']:not(:disabled),
+	input[type='button']:not(:disabled),
+	input[type='checkbox']:not(:disabled),
+	input[type='radio']:not(:disabled) {
+		cursor: pointer;
+	}
+
+	button:disabled,
+	[role='button'][aria-disabled='true'] {
+		cursor: not-allowed;
+	}
+}