diff --git a/backend/internal/latest/poller.go b/backend/internal/latest/poller.go
index dac582b..aca436f 100644
--- a/backend/internal/latest/poller.go
+++ b/backend/internal/latest/poller.go
@@ -5,7 +5,6 @@ import (
 	"errors"
 	"log"
 	"net/url"
-	"sort"
 	"sync"
 	"time"
 
@@ -173,14 +172,7 @@ func fetcherFor(site string, browser, tls Fetcher) Fetcher {
 // laneNames returns every registry Site in the deterministic order both Run
 // and runOnce iterate: sorted, so lane behaviour and its tests agree on who
 // runs first.
-func laneNames() []string {
-	names := make([]string, 0, len(sites))
-	for name := range sites {
-		names = append(names, name)
-	}
-	sort.Strings(names)
-	return names
-}
+func laneNames() []string { return SiteNames() }
 
 func (p *Poller) Run(ctx context.Context) {
 	names := laneNames()
diff --git a/backend/internal/latest/sites.go b/backend/internal/latest/sites.go
index 64580b4..dd179cf 100644
--- a/backend/internal/latest/sites.go
+++ b/backend/internal/latest/sites.go
@@ -511,6 +511,18 @@ var sites = map[string]site{
 	},
 }
 
+// SiteNames returns every registry Site, sorted. The admin Series list's Site
+// select needs the full registry, not just the Sites that have rows, and
+// laneNames() is the poller's copy of the same list — both read this.
+func SiteNames() []string {
+	names := make([]string, 0, len(sites))
+	for name := range sites {
+		names = append(names, name)
+	}
+	sort.Strings(names)
+	return names
+}
+
 // browserBackedSites is derived from the registry: the Sites whose pages are
 // read through the browser sidecar. Sorted so callers that range it (the
 // browser fetcher's dispatch) see a stable order instead of map-iteration
diff --git a/backend/internal/web/admin.go b/backend/internal/web/admin.go
index 3afcaa1..08aa2eb 100644
--- a/backend/internal/web/admin.go
+++ b/backend/internal/web/admin.go
@@ -18,6 +18,10 @@ type LaneReporter interface {
 	LaneStatus() latest.Status
 }
 
+// ownerWindow is the staleness boundary the Series list's "not checked in
+// 12h" filter compares against. Declared once; later admin tickets read it.
+const ownerWindow = 12 * time.Hour
+
 // adminView is the shared shell data for an administrative page and the roster
 // fragment returned after a Reader action.
 type adminView struct {
@@ -25,8 +29,9 @@ type adminView struct {
 	Readers []store.ReaderSummary
 	// OwnerID travels with the roster so it can tell the owner's own row from
 	// the Readers they may act on.
-	OwnerID int64
-	Lanes   lanesView
+	OwnerID    int64
+	Lanes      lanesView
+	SeriesList seriesListView
 }
 
 // lanesView is the Lane status block: one row per Site that has run, plus the
@@ -142,12 +147,6 @@ func (h *Handler) adminReaders(w http.ResponseWriter, r *http.Request) {
 	h.renderAdmin(w, adminView{Page: "readers", Readers: readers, OwnerID: h.store.OwnerID()})
 }
 
-// adminSeries renders the Series shell. Its data arrives in a later admin
-// ticket.
-func (h *Handler) adminSeries(w http.ResponseWriter, r *http.Request) {
-	h.renderAdmin(w, adminView{Page: "series"})
-}
-
 func (h *Handler) renderAdmin(w http.ResponseWriter, view adminView) {
 	h.render(w, http.StatusOK, "admin", view)
 }
diff --git a/backend/internal/web/admin_series.go b/backend/internal/web/admin_series.go
new file mode 100644
index 0000000..6b98d35
--- /dev/null
+++ b/backend/internal/web/admin_series.go
@@ -0,0 +1,305 @@
+package web
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"net/url"
+	"strconv"
+	"time"
+
+	"bookmarkmanager/backend/internal/latest"
+	"bookmarkmanager/backend/internal/store"
+)
+
+// seriesPageSize matches the store's row-read page length: the pager's range
+// must agree with the LIMIT the store applies or the "of N" figure describes
+// the wrong page. The store does not export it (#140).
+const seriesPageSize = 50
+
+// seriesFilterLabels names every hygiene filter for the Series list select,
+// keyed by the wire constant the URL carries. The render order is
+// seriesFilterOrder; the labels are read by later admin tickets too, so the
+// map and the constants cannot drift apart.
+var seriesFilterLabels = map[string]string{
+	store.SeriesFilterAll:          "All series",
+	store.SeriesFilterNoURL:        "No series URL",
+	store.SeriesFilterNoChapter:    "Never read a chapter",
+	store.SeriesFilterNoReaders:    "No Readers",
+	store.SeriesFilterNeverChecked: "Never checked",
+	store.SeriesFilterStale:        "Not checked in 12h",
+	store.SeriesFilterNoCover:      "No cover",
+	store.SeriesFilterReaderReport: "Latest from a Reader",
+}
+
+// seriesFilterOrder is the select's render order: All first, then the
+// permanent repairs, then the fixable ones (issue #140).
+var seriesFilterOrder = []string{
+	store.SeriesFilterAll,
+	store.SeriesFilterNoURL,
+	store.SeriesFilterNoChapter,
+	store.SeriesFilterNoReaders,
+	store.SeriesFilterNeverChecked,
+	store.SeriesFilterStale,
+	store.SeriesFilterNoCover,
+	store.SeriesFilterReaderReport,
+}
+
+// seriesListView is the Series list page's data. The template renders strings
+// and flags, and every judgement about what a value means is made here.
+type seriesListView struct {
+	Filters     []seriesFilterOption
+	Sites       []string
+	Site        string // "" = every Site
+	Kind        string // "" = both libraries
+	FilterLabel string
+	Rows        []seriesRowView
+	Total       int
+	// KindBoth / KindManga / KindNovel are the Library segment links, and
+	// PrevHref / NextHref the pager's, all carrying the active filter, Site
+	// and Kind so narrowing never drops state.
+	KindBoth  string
+	KindManga string
+	KindNovel string
+	PrevHref  string
+	NextHref  string
+	Range     string
+}
+
+// seriesFilterOption is one entry of the Show select: its wire value, its
+// rendered label with the library-wide count, and whether it is the active
+// filter.
+type seriesFilterOption struct {
+	Name     string
+	Label    string
+	Count    int
+	Selected bool
+}
+
+// seriesRowView is one Series row formatted for the template. Band carries
+// the alternating row tint by class rather than nth-of-type, so the confirm
+// rows later tickets add are row siblings without breaking the alternation.
+// Attention tints the title patina: a row with any hygiene chip needs one.
+type seriesRowView struct {
+	Key       string
+	Title     string
+	Site      string
+	Ch        string // chapter number; "—" until first captured
+	Age       string // checked age; "never" until first check
+	Readers   int
+	Notes     []string // chips, capped at two
+	More      int      // chips past the cap, rendered as a +N tail
+	Band      bool
+	Attention bool
+}
+
+// adminSeries renders the filterable, bookmarkable Series list: filter, Site,
+// Library and page all live in the query string, so the list's state is an
+// address rather than a click path.
+func (h *Handler) adminSeries(w http.ResponseWriter, r *http.Request) {
+	view, err := h.seriesListView(r)
+	if err != nil {
+		log.Printf("admin series: %v", err)
+		http.Error(w, "internal error", http.StatusInternalServerError)
+		return
+	}
+	h.renderAdmin(w, adminView{Page: "series", SeriesList: view})
+}
+
+// seriesListView assembles one Series list view from the request's query
+// string. An unknown filter value is the absent All case, never an error: the
+// select's options are not the only way this URL can be reached.
+func (h *Handler) seriesListView(r *http.Request) (seriesListView, error) {
+	q := r.URL.Query()
+	filter := q.Get("filter")
+	if _, ok := seriesFilterLabels[filter]; !ok {
+		filter = store.SeriesFilterAll
+	}
+	site := q.Get("site")
+	kind := q.Get("kind")
+	if kind != store.KindManga && kind != store.KindNovel {
+		kind = ""
+	}
+	page := 1
+	if p, err := strconv.Atoi(q.Get("page")); err == nil && p > 1 {
+		page = p
+	}
+
+	sf := store.SeriesFilter{
+		Site:   site,
+		Kind:   kind,
+		Name:   filter,
+		Cutoff: time.Now().Add(-ownerWindow).UnixMilli(),
+		Page:   page,
+	}
+	data, err := h.store.SeriesPage(sf)
+	if err != nil {
+		return seriesListView{}, err
+	}
+	// A page past the end is not an empty list: the store's window count runs
+	// over the rows the result set carries, so an overflow page reports zero
+	// rows and zero total, and the list re-reads at page 1 to know the truth.
+	if len(data.Rows) == 0 && page > 1 {
+		page = 1
+		sf.Page = 1
+		data, err = h.store.SeriesPage(sf)
+		if err != nil {
+			return seriesListView{}, err
+		}
+	}
+
+	view := seriesListView{
+		Site:        site,
+		Kind:        kind,
+		FilterLabel: seriesFilterLabels[filter],
+		Rows:        make([]seriesRowView, 0, len(data.Rows)),
+		Total:       data.Total,
+		Sites:       latest.SiteNames(),
+	}
+	now := time.Now()
+	for i, a := range data.Rows {
+		view.Rows = append(view.Rows, seriesRow(a, i, now))
+	}
+	view.Filters, err = h.seriesFilterOptions(filter, sf.Cutoff)
+	if err != nil {
+		return seriesListView{}, err
+	}
+	view.KindBoth = seriesListHref(filter, site, "", 0)
+	view.KindManga = seriesListHref(filter, site, store.KindManga, 0)
+	view.KindNovel = seriesListHref(filter, site, store.KindNovel, 0)
+	if page > 1 {
+		view.PrevHref = seriesListHref(filter, site, kind, page-1)
+	}
+	if last := (data.Total + seriesPageSize - 1) / seriesPageSize; page < last {
+		view.NextHref = seriesListHref(filter, site, kind, page+1)
+	}
+	view.Range = pagerRange(data.Total, len(data.Rows), page)
+	return view, nil
+}
+
+// seriesFilterOptions renders every hygiene filter with its library-wide
+// count, one SeriesShapes pass per filter summed in Go — the shipped surface
+// offers eight grouped passes, not a single stats query (#140). The counts
+// are library-wide because the select sits next to the Site narrowing and
+// must not shift as the owner narrows the list itself. Cutoff travels with
+// the stale filter, or its count would always be zero.
+func (h *Handler) seriesFilterOptions(selected string, cutoff int64) ([]seriesFilterOption, error) {
+	out := make([]seriesFilterOption, 0, len(seriesFilterOrder))
+	for _, name := range seriesFilterOrder {
+		shapes, err := h.store.SeriesShapes(store.SeriesFilter{Name: name, Cutoff: cutoff})
+		if err != nil {
+			return nil, err
+		}
+		count := 0
+		for _, sh := range shapes {
+			count += sh.Total
+		}
+		out = append(out, seriesFilterOption{
+			Name:     name,
+			Label:    seriesFilterLabels[name],
+			Count:    count,
+			Selected: name == selected,
+		})
+	}
+	return out, nil
+}
+
+// seriesRow shapes one store row for the template, capping its chips at two
+// plus a +N tail; attention marks a row that carries any.
+func seriesRow(a store.AdminSeries, i int, now time.Time) seriesRowView {
+	row := seriesRowView{
+		Key:     a.Key(),
+		Title:   a.Title,
+		Site:    a.Site,
+		Readers: a.ReaderCount,
+		Band:    i%2 == 1,
+	}
+	if a.LatestChapterNum != nil {
+		row.Ch = strconv.FormatFloat(*a.LatestChapterNum, 'f', -1, 64)
+	} else {
+		row.Ch = "—"
+	}
+	row.Age = checkedAge(now, a.LatestCheckedAt)
+	notes := seriesNotes(a, now)
+	if n := len(notes); n > 2 {
+		row.Notes, row.More = notes[:2], n-2
+	} else {
+		row.Notes = notes
+	}
+	row.Attention = len(notes) > 0
+	return row
+}
+
+// seriesNotes are a row's hygiene chips in the design's order: no URL, no
+// cover, orphan, stale, reader sighting.
+func seriesNotes(a store.AdminSeries, now time.Time) []string {
+	notes := []string{}
+	if a.SeriesURL == "" {
+		notes = append(notes, "no URL")
+	}
+	if a.CoverAddress == "" {
+		notes = append(notes, "no cover")
+	}
+	if a.ReaderCount == 0 {
+		notes = append(notes, "orphan")
+	}
+	if a.LatestCheckedAt > 0 && a.LatestCheckedAt < now.Add(-ownerWindow).UnixMilli() {
+		notes = append(notes, "stale")
+	}
+	if a.RaisedByReader {
+		notes = append(notes, "reader sighting")
+	}
+	return notes
+}
+
+// checkedAge formats how long ago a Series was last checked, at the
+// granularity the list reads at — minutes, hours, days. Zero means never.
+func checkedAge(now time.Time, ts int64) string {
+	if ts == 0 {
+		return "never"
+	}
+	d := now.Sub(time.UnixMilli(ts))
+	switch {
+	case d < time.Hour:
+		m := int(d / time.Minute)
+		if m < 1 {
+			m = 1
+		}
+		return fmt.Sprintf("%dm ago", m)
+	case d < 24*time.Hour:
+		return fmt.Sprintf("%dh ago", int(d/time.Hour))
+	default:
+		return fmt.Sprintf("%dd ago", int(d/(24*time.Hour)))
+	}
+}
+
+// pagerRange is the pager's "1–50 of 120" line. The template renders the
+// pager only over rows (the empty state replaces it), so it is never asked
+// to describe an empty list.
+func pagerRange(total, rows, page int) string {
+	from := (page-1)*seriesPageSize + 1
+	return fmt.Sprintf("%d–%d of %d", from, from+rows-1, total)
+}
+
+// seriesListHref is one Series list address carrying the filter, Site, Kind
+// and page. The All filter and page 1 are the absent cases and stay out of
+// the URL, so the default address is the shortest one.
+func seriesListHref(filter, site, kind string, page int) string {
+	q := url.Values{}
+	if filter != "" && filter != store.SeriesFilterAll {
+		q.Set("filter", filter)
+	}
+	if site != "" {
+		q.Set("site", site)
+	}
+	if kind != "" {
+		q.Set("kind", kind)
+	}
+	if page > 1 {
+		q.Set("page", strconv.Itoa(page))
+	}
+	if len(q) == 0 {
+		return "/admin/series"
+	}
+	return "/admin/series?" + q.Encode()
+}
diff --git a/backend/internal/web/static/admin.css b/backend/internal/web/static/admin.css
index 3c0d311..9cc4126 100644
--- a/backend/internal/web/static/admin.css
+++ b/backend/internal/web/static/admin.css
@@ -240,12 +240,20 @@
   color: var(--patina);
 }
 
+.admin-sheet .tbl .trow.attention .c-title {
+  color: var(--patina);
+}
+
 .admin-sheet .tbl .c-ch,
 .admin-sheet .tbl .c-rd {
   text-align: right;
   padding-right: 26px;
 }
 
+.admin-sheet .tbl .trow .c-note .mark {
+  margin-right: 8px;
+}
+
 .admin-sheet .tbl .c-act {
   text-align: right;
 }
@@ -368,6 +376,42 @@
   row-gap: 4px;
 }
 
+.admin-sheet .tbl.series .thead > *:first-child {
+  padding-left: 20px;
+}
+
+.admin-sheet .tbl.series .thead > *:last-child {
+  padding-right: 20px;
+}
+
+/* The site cell's colour is a class, never an inline style: site is
+   client-supplied and unvalidated, and a hostile value reaching a CSS
+   context would render ZgotmplZ, while an unknown class degrades to the
+   unstyled cell. */
+.admin-sheet .tbl .c-site.site-asura {
+  color: var(--asura);
+}
+
+.admin-sheet .tbl .c-site.site-demonic {
+  color: var(--demonic);
+}
+
+.admin-sheet .tbl .c-site.site-comix {
+  color: var(--comix);
+}
+
+.admin-sheet .tbl .c-site.site-kagane {
+  color: var(--kagane);
+}
+
+.admin-sheet .tbl .c-site.site-novelfull {
+  color: var(--novelfull);
+}
+
+.admin-sheet .tbl .c-site.site-lightnovelworld {
+  color: var(--lightnovelworld);
+}
+
 .admin-sheet .tbl.series .trow {
   display: grid;
   grid-column: 1 / -1;
@@ -434,6 +478,12 @@
   border-bottom-color: var(--patina);
 }
 
+.admin-sheet .fsel select option,
+.admin-sheet .pausebar select option {
+  background: var(--ink);
+  color: var(--paper);
+}
+
 .admin-sheet .segrow {
   display: inline-flex;
   gap: 2px;
@@ -480,6 +530,14 @@
   text-transform: uppercase;
 }
 
+.admin-sheet .pager .pg {
+  color: var(--paper-dim);
+}
+
+.admin-sheet .pager .pg:hover {
+  color: var(--paper);
+}
+
 .admin-sheet .pager .pg.disabled {
   color: var(--faint);
   pointer-events: none;
@@ -497,6 +555,7 @@
 
 .admin-sheet .empty p {
   margin: 6px 0 0;
+  font: 14px/1.5 var(--font-body);
   color: var(--mute);
 }
 
diff --git a/backend/internal/web/templates/admin.html b/backend/internal/web/templates/admin.html
index 1f60e20..5684c26 100644
--- a/backend/internal/web/templates/admin.html
+++ b/backend/internal/web/templates/admin.html
@@ -39,7 +39,7 @@
     {{else if eq .Page "readers"}}
     {{template "readers" .}}
     {{else if eq .Page "series"}}
-    <h2 class="sec">Series</h2>
+    {{template "series-list" .SeriesList}}
     {{else}}
     <h2 class="sec">Overview</h2>
     {{end}}
diff --git a/backend/internal/web/templates/series-list.html b/backend/internal/web/templates/series-list.html
new file mode 100644
index 0000000..682c75c
--- /dev/null
+++ b/backend/internal/web/templates/series-list.html
@@ -0,0 +1,46 @@
+{{/* The Series list: every Series across every Reader's library, filtered by
+     one hygiene rule and narrowed by Site and Library. Filter, Site, Library
+     and page all live in the query string, so the list's state is an address
+     that can be bookmarked: the two selects submit the GET form, and the
+     Library segment links and the pager preserve the filter and Site. */}}
+{{define "series-list"}}
+<form class="filterbar" method="get" action="/admin/series">
+  <input type="hidden" name="kind" value="{{.Kind}}">
+  <label class="fsel"><span>Show</span><select name="filter" onchange="this.form.submit()">
+    {{range .Filters}}<option value="{{.Name}}"{{if .Selected}} selected{{end}}>{{.Label}} ({{.Count}})</option>{{end}}
+  </select></label>
+  <label class="fsel"><span>Site</span><select name="site" onchange="this.form.submit()">
+    <option value=""{{if not .Site}} selected{{end}}>All sites</option>
+    {{range .Sites}}<option value="{{.}}"{{if eq $.Site .}} selected{{end}}>{{.}}</option>{{end}}
+  </select></label>
+  <span class="segrow">
+    <a href="{{.KindBoth}}"{{if not .Kind}} class="active"{{end}}>both</a>
+    <a href="{{.KindManga}}"{{if eq .Kind "manga"}} class="active"{{end}}>manga</a>
+    <a href="{{.KindNovel}}"{{if eq .Kind "novel"}} class="active"{{end}}>novels</a>
+  </span>
+</form>
+<div class="listhead">{{.Total}} series <span class="lbl">· <em>{{.FilterLabel}}</em></span></div>
+{{if .Rows}}
+<div class="tbl series">
+  <div class="thead"><span>Site</span><span class="c-ch">Ch</span><span>Checked</span><span class="c-rd">Readers</span><span>Notes</span><span></span></div>
+  {{range .Rows}}
+  <div class="trow{{if .Attention}} attention{{end}}{{if .Band}} band{{end}}">
+    <span class="c-title"><a href="/admin/series/{{.Key}}">{{.Title}}</a></span>
+    <span class="c-site site-{{.Site}}">{{.Site}}</span>
+    <span class="c-ch">{{.Ch}}</span>
+    <span>{{.Age}}</span>
+    <span class="c-rd">{{.Readers}}</span>
+    <span class="c-note">{{range .Notes}}<span class="mark">{{.}}</span>{{end}}{{if .More}}<span class="mark mark-faint">+{{.More}}</span>{{end}}</span>
+    <span class="c-act"></span>
+  </div>
+  {{end}}
+</div>
+<div class="pager">
+  {{if .PrevHref}}<a class="pg" href="{{.PrevHref}}">‹ prev</a>{{else}}<span class="pg disabled">‹ prev</span>{{end}}
+  <span>{{.Range}}</span>
+  {{if .NextHref}}<a class="pg" href="{{.NextHref}}">next ›</a>{{else}}<span class="pg disabled">next ›</span>{{end}}
+</div>
+{{else}}
+<div class="empty"><strong>No series</strong><p>Nothing matches <em>{{.FilterLabel}}</em>.</p></div>
+{{end}}
+{{end}}
diff --git a/backend/web_test.go b/backend/web_test.go
index dcfd21d..b8b2970 100644
--- a/backend/web_test.go
+++ b/backend/web_test.go
@@ -1840,3 +1840,406 @@ func TestNovelNewTabFallsBackToAll(t *testing.T) {
 		t.Fatal("novel tab=new should render the novel All list")
 	}
 }
+
+// seriesRowSeed is one series row (and optionally its bookmarks) for the
+// Series list tests. Seeded with direct SQL because the store's own surface
+// cannot produce an orphan series or a Reader-raised Latest Chapter — the
+// same reason the store's admin tests seed this way.
+type seriesRowSeed struct {
+	key       string
+	kind      string
+	url       string
+	cover     string // cover_address
+	checkedAt int64
+	latestNum *float64
+	bookmarks int  // readers that hold it; 0 = orphan
+	raisedBy  bool // a Reader's report is attributed as the raiser
+}
+
+// seedSeriesRow inserts one series row and its bookmarks (owner first, then
+// fresh readers) with the exact admin-relevant facts a test needs.
+func seedSeriesRow(t *testing.T, st *store.Store, db *sql.DB, seed seriesRowSeed) {
+	t.Helper()
+	site, seriesID, ok := strings.Cut(seed.key, ":")
+	if !ok {
+		t.Fatalf("key %q: no ':' separator", seed.key)
+	}
+	if seed.kind == "" {
+		seed.kind = store.KindManga
+	}
+	var latestChapter any = ""
+	if seed.latestNum != nil {
+		latestChapter = "Chapter " + strconv.FormatFloat(*seed.latestNum, 'f', -1, 64)
+	}
+	if _, err := db.Exec(`
+		INSERT INTO series (site, series_id, title, kind, series_url, cover_address,
+		                    latest_checked_at, latest_chapter, latest_chapter_num)
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)`,
+		site, seriesID, "Title of "+seed.key, seed.kind, seed.url, seed.cover,
+		seed.checkedAt, latestChapter, seed.latestNum); err != nil {
+		t.Fatalf("seed series %q: %v", seed.key, err)
+	}
+	for i := range seed.bookmarks {
+		var readerID int64 = st.OwnerID()
+		if i > 0 {
+			readerID = seedReader(t, st)
+		}
+		if _, err := db.Exec(`
+			INSERT INTO bookmarks (reader_id, site, series_id,
+			                       last_chapter, last_chapter_num, last_chapter_url,
+			                       favorite, status, updated_at)
+			VALUES ($1, $2, $3, '', 0, '', false, 'reading', $4)`,
+			readerID, site, seriesID, seed.checkedAt); err != nil {
+			t.Fatalf("seed bookmark %q: %v", seed.key, err)
+		}
+	}
+	if seed.raisedBy {
+		if _, err := db.Exec(
+			`UPDATE series SET latest_raised_by = $1 WHERE site = $2 AND series_id = $3`,
+			st.OwnerID(), site, seriesID); err != nil {
+			t.Fatalf("seed raised-by %q: %v", seed.key, err)
+		}
+	}
+}
+
+// seedReader mints a fresh Reader for a second bookmark, so a series can carry
+// a Reader count above one.
+func seedReader(t *testing.T, st *store.Store) int64 {
+	t.Helper()
+	discordID := "seed-" + strconv.FormatInt(time.Now().UnixNano(), 10)
+	id, err := st.EnsureReader(discordID, [32]byte{})
+	if err != nil {
+		t.Fatalf("EnsureReader: %v", err)
+	}
+	return id
+}
+
+// adminSeriesPage drives one Series list request as the owner and returns the
+// rendered body, failing the test on anything but a 200.
+func adminSeriesPage(t *testing.T, srv http.Handler, st *store.Store, query string) string {
+	t.Helper()
+	req := httptest.NewRequest(http.MethodGet, "/admin/series"+query, nil)
+	req.AddCookie(sessionCookie(t, st))
+	rr := httptest.NewRecorder()
+	srv.ServeHTTP(rr, req)
+	if rr.Code != http.StatusOK {
+		t.Fatalf("GET /admin/series%s status = %d, want 200", query, rr.Code)
+	}
+	return rr.Body.String()
+}
+
+// The filter select reaches the store as the wire constant and the heading
+// states the same total the rows render: ?filter=no_cover renders only the
+// no-cover row, its option label carries its library-wide count, and an
+// unknown filter value is the absent All case, never an error.
+func TestSeriesListFilterWiring(t *testing.T) {
+	st, dsn := newTestStoreURL(t)
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatalf("open %s: %v", dsn, err)
+	}
+	defer db.Close()
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:healthy", url: "https://asurascans.com/comics/healthy", cover: "aaa", checkedAt: time.Now().UnixMilli(), latestNum: floatPtr(10), bookmarks: 1})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:nocover", url: "https://asurascans.com/comics/nocover", checkedAt: time.Now().UnixMilli(), latestNum: floatPtr(3), bookmarks: 1})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:stale", url: "https://asurascans.com/comics/stale", cover: "bbb", checkedAt: time.Now().Add(-24 * time.Hour).UnixMilli(), latestNum: floatPtr(4), bookmarks: 1})
+	srv := newRouter(st, testConfig(), nil)
+
+	body := adminSeriesPage(t, srv, st, "?filter=no_cover")
+	if !strings.Contains(body, "Title of asura:nocover") {
+		t.Errorf("no_cover list misses its row:\n%s", body)
+	}
+	if strings.Contains(body, "Title of asura:healthy") || strings.Contains(body, "Title of asura:stale") {
+		t.Errorf("no_cover list renders a covered row:\n%s", body)
+	}
+	if !strings.Contains(body, "1 series") || !strings.Contains(body, "No cover") {
+		t.Errorf("no_cover heading lacks the filtered count and name:\n%s", body)
+	}
+	if !strings.Contains(body, "No cover (1)") {
+		t.Errorf("the filter option label lacks its count:\n%s", body)
+	}
+	if !strings.Contains(body, `<option value="no_cover" selected>`) {
+		t.Errorf("the no_cover option is not selected:\n%s", body)
+	}
+	// The stale option's count is cutoff-dependent: the row read passes the
+	// 12h boundary, and so must the aggregate that numbers the select.
+	if !strings.Contains(body, "Not checked in 12h (1)") {
+		t.Errorf("the stale option lacks its cutoff-dependent count:\n%s", body)
+	}
+
+	// An unknown filter value is the absent All case: both rows, no error.
+	body = adminSeriesPage(t, srv, st, "?filter=bogus")
+	if !strings.Contains(body, "Title of asura:healthy") || !strings.Contains(body, "Title of asura:nocover") {
+		t.Errorf("unknown filter does not render All series:\n%s", body)
+	}
+	if !strings.Contains(body, `<option value="all" selected>`) {
+		t.Errorf("the all option is not selected for an unknown filter:\n%s", body)
+	}
+}
+
+// ?filter=stale&site=kagane&kind=manga narrows on all three at once: only the
+// kagane manga stale row renders, and every link the page emits carries the
+// filter and Site so the narrowing survives in the URL.
+func TestSeriesListSiteAndKindComposeWithFilter(t *testing.T) {
+	st, dsn := newTestStoreURL(t)
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatalf("open %s: %v", dsn, err)
+	}
+	defer db.Close()
+	stale := time.Now().Add(-24 * time.Hour).UnixMilli()
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "kagane:want", url: "u", cover: "c", checkedAt: stale, latestNum: floatPtr(1), bookmarks: 1})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "kagane:novel", url: "u", cover: "c", kind: store.KindNovel, checkedAt: stale, latestNum: floatPtr(1), bookmarks: 1})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "kagane:fresh", url: "u", cover: "c", checkedAt: time.Now().UnixMilli(), latestNum: floatPtr(1), bookmarks: 1})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:stale", url: "u", cover: "c", checkedAt: stale, latestNum: floatPtr(1), bookmarks: 1})
+	srv := newRouter(st, testConfig(), nil)
+
+	body := adminSeriesPage(t, srv, st, "?filter=stale&site=kagane&kind=manga")
+	if !strings.Contains(body, "Title of kagane:want") {
+		t.Errorf("stale+kagane+manga misses its row:\n%s", body)
+	}
+	for _, unwanted := range []string{"Title of kagane:novel", "Title of kagane:fresh", "Title of asura:stale"} {
+		if strings.Contains(body, unwanted) {
+			t.Errorf("stale+kagane+manga renders %q:\n%s", unwanted, body)
+		}
+	}
+	if !strings.Contains(body, "1 series") {
+		t.Errorf("heading lacks the narrowed count:\n%s", body)
+	}
+	// The narrowing survives in the URL: every emitted link carries the
+	// filter and Site, and the kind hidden input keeps it on select submits.
+	for _, want := range []string{
+		`href="/admin/series?filter=stale&amp;site=kagane"`,
+		`href="/admin/series?filter=stale&amp;kind=manga&amp;site=kagane"`,
+		`href="/admin/series?filter=stale&amp;kind=novel&amp;site=kagane"`,
+		`<input type="hidden" name="kind" value="manga">`,
+	} {
+		if !strings.Contains(body, want) {
+			t.Errorf("narrowing is lost from the URL; missing %q:\n%s", want, body)
+		}
+	}
+	if !strings.Contains(body, `<option value="stale" selected>`) {
+		t.Errorf("the stale filter is not kept selected:\n%s", body)
+	}
+	if !strings.Contains(body, `<option value="kagane" selected>`) {
+		t.Errorf("the kagane site is not kept selected:\n%s", body)
+	}
+}
+
+// More than one page of rows: page 1 and page 2 share no key, the pager range
+// comes from the window total (not a second query), and a page past the end
+// re-reads at page 1 rather than rendering an empty table. All 55 rows share
+// a zero check stamp, so only the (site, series_id) tie-break keeps the page
+// boundary stable.
+func TestSeriesListPagingIsStable(t *testing.T) {
+	st, dsn := newTestStoreURL(t)
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatalf("open %s: %v", dsn, err)
+	}
+	defer db.Close()
+	if _, err := db.Exec(`
+		INSERT INTO series (site, series_id, title, series_url, cover_address,
+		                    latest_checked_at)
+		SELECT 'asura', 'bulk-' || g, 'Bulk ' || g, 'https://asurascans.com/comics/bulk-' || g, 'c', 0
+		FROM generate_series(1, 55) AS g`); err != nil {
+		t.Fatalf("bulk seed series: %v", err)
+	}
+	if _, err := db.Exec(`
+		INSERT INTO bookmarks (reader_id, site, series_id, updated_at)
+		SELECT $1, 'asura', 'bulk-' || g, 1000
+		FROM generate_series(1, 55) AS g`, st.OwnerID()); err != nil {
+		t.Fatalf("bulk seed bookmarks: %v", err)
+	}
+	srv := newRouter(st, testConfig(), nil)
+
+	pageKeys := func(body string) map[string]bool {
+		out := map[string]bool{}
+		// parts[0] is the prelude before the first detail link; every later
+		// chunk starts with a key, so only those count.
+		for _, chunk := range strings.Split(body, `href="/admin/series/`)[1:] {
+			if i := strings.Index(chunk, `"`); i > 0 {
+				out[chunk[:i]] = true
+			}
+		}
+		return out
+	}
+
+	p1 := adminSeriesPage(t, srv, st, "")
+	p2 := adminSeriesPage(t, srv, st, "?page=2")
+	if !strings.Contains(p1, "1–50 of 55") {
+		t.Errorf("page 1 pager range wrong:\n%s", p1)
+	}
+	if !strings.Contains(p2, "51–55 of 55") {
+		t.Errorf("page 2 pager range wrong:\n%s", p2)
+	}
+	if !strings.Contains(p1, `href="/admin/series?page=2"`) {
+		t.Errorf("page 1 lacks a next link:\n%s", p1)
+	}
+	k1, k2 := pageKeys(p1), pageKeys(p2)
+	if len(k1) != 50 || len(k2) != 5 {
+		t.Fatalf("pages hold %d and %d rows, want 50 and 5", len(k1), len(k2))
+	}
+	for k := range k1 {
+		if k2[k] {
+			t.Errorf("row %q repeats across pages", k)
+		}
+	}
+	if len(k1)+len(k2) != 55 {
+		t.Errorf("%d distinct rows across pages, want 55 (a row vanished)", len(k1)+len(k2))
+	}
+
+	// A page past the end re-reads at page 1: the pager states the first
+	// page's range and the rows render rather than an empty table.
+	pOver := adminSeriesPage(t, srv, st, "?page=99")
+	if !strings.Contains(pOver, "1–50 of 55") || len(pageKeys(pOver)) != 50 {
+		t.Errorf("a page past the end does not re-read at page 1:\n%s", pOver)
+	}
+}
+
+// Page 2 of a one-page result re-reads at page 1: the store's window count
+// only runs over the rows the result set carries, so an overflow page must
+// not be rendered as an empty list.
+func TestSeriesListPagePastEndReReadsAtPageOne(t *testing.T) {
+	st, dsn := newTestStoreURL(t)
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatalf("open %s: %v", dsn, err)
+	}
+	defer db.Close()
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:a", url: "u", cover: "c", checkedAt: 9000, latestNum: floatPtr(1), bookmarks: 1})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:b", url: "u", cover: "c", checkedAt: 9000, latestNum: floatPtr(1), bookmarks: 1})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:c", url: "u", cover: "c", checkedAt: 9000, latestNum: floatPtr(1), bookmarks: 1})
+	srv := newRouter(st, testConfig(), nil)
+
+	body := adminSeriesPage(t, srv, st, "?page=2")
+	if !strings.Contains(body, "1–3 of 3") {
+		t.Errorf("page 2 of a one-page result does not re-read at page 1:\n%s", body)
+	}
+	for _, want := range []string{"Title of asura:a", "Title of asura:b", "Title of asura:c"} {
+		if !strings.Contains(body, want) {
+			t.Errorf("page 2 of a one-page result dropped %q:\n%s", want, body)
+		}
+	}
+	if strings.Contains(body, `class="empty"`) {
+		t.Errorf("page 2 of a one-page result renders the empty state:\n%s", body)
+	}
+}
+
+// A filter matching nothing renders the named empty state, still 200, and
+// keeps the filter selected: an empty hygiene list reads as good news rather
+// than a broken page.
+func TestSeriesListEmptyStateNamesTheFilter(t *testing.T) {
+	st, dsn := newTestStoreURL(t)
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatalf("open %s: %v", dsn, err)
+	}
+	defer db.Close()
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:covered", url: "u", cover: "c", checkedAt: 9000, latestNum: floatPtr(1), bookmarks: 1})
+	srv := newRouter(st, testConfig(), nil)
+
+	body := adminSeriesPage(t, srv, st, "?filter=no_cover")
+	if !strings.Contains(body, "No series") {
+		t.Errorf("a matching-nothing filter renders no named empty state:\n%s", body)
+	}
+	if !strings.Contains(body, "No cover") {
+		t.Errorf("the empty state does not name the filter:\n%s", body)
+	}
+	if !strings.Contains(body, `<option value="no_cover" selected>`) {
+		t.Errorf("the empty filter is not kept selected:\n%s", body)
+	}
+	if strings.Contains(body, `class="tbl series"`) {
+		t.Errorf("an empty list still renders the table:\n%s", body)
+	}
+}
+
+// A hostile title is escaped, not executed: titles come from the database and
+// from third-party pages, so they are attacker-controlled.
+func TestSeriesListEscapesHostileTitles(t *testing.T) {
+	st, dsn := newTestStoreURL(t)
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatalf("open %s: %v", dsn, err)
+	}
+	defer db.Close()
+	if _, err := db.Exec(`
+		INSERT INTO series (site, series_id, title, series_url, cover_address, latest_checked_at)
+		VALUES ('asura', 'xss', '<script>alert(1)</script>', 'u', 'c', 9000)`); err != nil {
+		t.Fatalf("seed hostile title: %v", err)
+	}
+	srv := newRouter(st, testConfig(), nil)
+
+	body := adminSeriesPage(t, srv, st, "")
+	if strings.Contains(body, "<script>alert") {
+		t.Errorf("hostile title rendered unescaped:\n%s", body)
+	}
+	if !strings.Contains(body, "&lt;script&gt;") {
+		t.Errorf("hostile title is not escaped:\n%s", body)
+	}
+}
+
+// Rows are the two-line form, banded by class (never nth-of-type), the site
+// cell colours by class rather than inline style, chips cap at two plus a +N
+// tail, and no ember token appears anywhere on the page.
+func TestSeriesListRowShape(t *testing.T) {
+	st, dsn := newTestStoreURL(t)
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatalf("open %s: %v", dsn, err)
+	}
+	defer db.Close()
+	// An orphan with no URL and no cover: three chips, capped to two plus a
+	// tail. The two clean rows sit on either side for the banding.
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:broken", checkedAt: 0, bookmarks: 0})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:mid", url: "u", cover: "c", checkedAt: time.Now().Add(-24 * time.Hour).UnixMilli(), latestNum: floatPtr(1), bookmarks: 1})
+	seedSeriesRow(t, st, db, seriesRowSeed{key: "asura:fine", url: "u", cover: "c", checkedAt: time.Now().UnixMilli(), latestNum: floatPtr(1), bookmarks: 1})
+	srv := newRouter(st, testConfig(), nil)
+
+	body := adminSeriesPage(t, srv, st, "")
+	// Order is least-recently-checked first, then (site, series_id): broken
+	// (never checked), mid (stale), fine (fresh). The middle row carries the
+	// band class; the marked row the attention class.
+	if !(strings.Index(body, "Title of asura:broken") < strings.Index(body, "Title of asura:mid") &&
+		strings.Index(body, "Title of asura:mid") < strings.Index(body, "Title of asura:fine")) {
+		t.Errorf("rows are not in checked order:\n%s", body)
+	}
+	if strings.Count(body, `class="trow"`) != 1 {
+		t.Errorf("expected exactly one unmarked, unbanded row:\n%s", body)
+	}
+	if strings.Count(body, `class="trow attention"`) != 1 {
+		t.Errorf("expected exactly one attention row:\n%s", body)
+	}
+	if strings.Count(body, `class="trow attention band"`) != 1 {
+		t.Errorf("expected exactly one attention band row:\n%s", body)
+	}
+	// The orphan's chips cap at two plus the +N tail.
+	if !strings.Contains(body, `<span class="mark">no URL</span><span class="mark">no cover</span><span class="mark mark-faint">+1</span>`) {
+		t.Errorf("chips do not cap at two plus a tail:\n%s", body)
+	}
+	// The site cell is a class, never the design's inline style.
+	if strings.Contains(body, `style="color:var(--`) {
+		t.Errorf("a site cell carries an inline style:\n%s", body)
+	}
+	if !strings.Contains(body, `class="c-site site-asura"`) {
+		t.Errorf("the site cell lacks its site class:\n%s", body)
+	}
+	// The action cell is present and empty for the sibling ticket, and no
+	// Remove control or confirm row renders in this batch.
+	if !strings.Contains(body, `<span class="c-act"></span>`) {
+		t.Errorf("the action cell is not present and empty:\n%s", body)
+	}
+	if strings.Contains(body, "Remove") || strings.Contains(body, "confirm-row") {
+		t.Errorf("a Remove control or confirm row renders in this batch:\n%s", body)
+	}
+	// No ember: the new-chapter signal stays off the admin surface. Scoped to
+	// the page content — the shell's brand mark legitimately wears the ember
+	// flame on every page, admin or not.
+	mainStart := strings.Index(body, `<main class="page admin-page">`)
+	mainEnd := strings.Index(body, `</main>`)
+	if mainStart < 0 || mainEnd < 0 || mainStart > mainEnd {
+		t.Fatalf("no page content region to check:\n%s", body)
+	}
+	if strings.Contains(body[mainStart:mainEnd], "--ember") {
+		t.Errorf("the page content carries an ember token:\n%s", body)
+	}
+}