a11y(medications): drop sm-size on intake-history pagination buttons

shadcn Button size="sm" renders at 32 px — below the project's
44 px touch floor adopted in v1.4.34.4. Use the default size with
an explicit min-h-11 sm:min-h-9 override so the pagination row
stays compact on desktop but clears WCAG 2.5.5 on touch.

src/components/medications/__tests__/intake-history-list-v2.test.tsx

@@ -241,6 +241,10 @@ describe("<IntakeHistoryListV2> — sort indicators", () => {
     );
     expect(html).toContain("Previous");
     expect(html).toContain("Next");
+    // a11y: pagination buttons clear the 44 px mobile touch floor and
+    // collapse to 36 px from sm+ so the row stays compact on desktop.
+    expect(html).toContain("min-h-11");
+    expect(html).toContain("sm:min-h-9");
   });
 
   it("hides pagination when total ≤ pageSize", () => {

src/components/medications/intake-history-list-v2.tsx

@@ -252,7 +252,7 @@ export function IntakeHistoryListV2({
                   <Button
                     type="button"
                     variant="outline"
-                    size="sm"
+                    className="min-h-11 sm:min-h-9"
                     onClick={() => setPage((p) => Math.max(0, p - 1))}
                     disabled={page === 0}
                   >
@@ -261,7 +261,7 @@ export function IntakeHistoryListV2({
                   <Button
                     type="button"
                     variant="outline"
-                    size="sm"
+                    className="min-h-11 sm:min-h-9"
                     onClick={() =>
                       setPage((p) => Math.min(totalPages - 1, p + 1))
                     }