Show the recent strip only where it is not a duplicate

The strip is the head of the same updated_at DESC reading list the All tab
renders, and app.html put it on every tab: on a small library it repeated the
list immediately below it while eating ~230px of the first phone screen, and on
Archived and Finished it showed reading series above the opposite bucket.

buildListView now fills Recent only for tab=all with more reading series than
the strip holds. Because the strip lives outside the htmx-swapped #list, an
in-page tab switch cannot re-render it, so applyFilter also decides its
visibility from the active tab; setActiveTab pokes it after a swap.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

backend/web.go

@@ -184,12 +184,6 @@ func (h *webHandler) buildListView(tab string) (listView, error) {
 	}
 	reading := filterBookmarks(all, func(b Bookmark) bool { return b.Status == statusReading })
 
-	// The strip reflects overall reading recency, not the active tab.
-	recent := reading
-	if len(recent) > recentCount {
-		recent = recent[:recentCount]
-	}
-
 	withNew := filterBookmarks(reading, func(b Bookmark) bool { return b.HasNewChapter() })
 
 	var items []Bookmark
@@ -206,6 +200,15 @@ func (h *webHandler) buildListView(tab string) (listView, error) {
 		tab = "all"
 		items = reading
 	}
+	// The strip is the head of the same updated_at DESC reading list the All tab
+	// renders, so it only earns its ~230px of the first phone screen where it is
+	// not a pure duplicate of what sits right below it: on All, with more series
+	// than it shows. On the other tabs it either repeats the list or, worse,
+	// puts reading series above the archived and finished buckets.
+	var recent []Bookmark
+	if tab == "all" && len(reading) > recentCount {
+		recent = reading[:recentCount]
+	}
 	return listView{Tab: tab, Recent: recent, Items: items, NewCount: len(withNew)}, nil
 }