style(series): plain-text page indicator instead of the chip pill

"Page N of M" now renders as small secondary-color text on the page
background rather than an accent chip (user preference; the old TS
twin happened to render this way and the chip was only being seen
after JS took over). With the twin deleted, this templ markup is the
only paginator rendering, so the look is stable.

templates/series.templ

@@ -54,7 +54,7 @@ templ Series(user User, seriesList []SeriesCardData, libData []LibraryData, curr
 									<span>Previous</span>
 								</a>
 							}
-							<span class="chip">
+							<span class="text-sm" style="color: var(--text-secondary)">
 								Page { fmt.Sprintf("%d", currentPage) } of { fmt.Sprintf("%d", totalPages) }
 							</span>
 							if currentPage < totalPages {