chore: refresh the graphify map after the #102 review fixes

Two-axis review found the shipped colour and three weak tests.

- --patina was a warm gold at the same hue family as --brass; the spec
  asked for a cool blue-green so an unhealthy Lane is unmistakably not
  ember. Now verdigris in both branches, with docs/design-system.md
  stating why the far side of the wheel is the point.
- A Lane pass that returns before computing its figures carries the
  previous pass's due count and gap forward instead of recording zeroes,
  and Checked rides beside Due so a stopped Lane is distinguishable from
  a quiet one.
- TestAdminPageWithoutAPollerSaysSo now separates the two causes it
  conflated, TestOwnerClearsReaderMarks seeds real counters so the
  clearing assertion can fail, and TestLaneStatus asserts Checked and
  the carry-forward.
- backend/AGENTS.md records the one deliberate owner comparison outside
  requireOwner and the carry-forward rule.

backend/AGENTS.md

@@ -211,6 +211,25 @@ Guidance for OpenCode (and Claude Code) working under `backend/`. See root `AGEN
   `POST /rotate-token` (atomic epoch bump + hash
   rewrite; invalidates every installed copy, so the panel warns to reinstall
   on all devices).
-  Owner-only `POST /readers/{id}/revoke` (drops one Reader's session rows and
-  re-renders the `readers` panel; 404 for any non-owner) is the only route that
-  reaches across Readers.
+- **Owner-only admin page (`internal/web/admin.go`, issue #102):** `GET /admin`
+  carries the Reader roster (sessions, Sighting counters, `POST
+  /readers/{id}/revoke` and `POST /readers/{id}/clear-marks`) and Poll Lane
+  status (`GET /ui/admin/lanes`, self-refreshing every 30s). Every route that
+  reaches past the acting Reader is listed in `adminRoutes()` and wrapped in
+  `requireOwner` at registration — add a route there, not a check inside a
+  handler; `web.AdminPatterns()` is what the gate test walks. A non-owner gets
+  404, never 403. Lane figures come from the running poller through the
+  `web.LaneReporter` seam (`latest.Poller.LaneStatus`), never from a table: a
+  nil reporter or a Lane that has not finished a pass renders "no data yet"
+  rather than zeroes. `main.newRouter` takes the reporter as an interface and
+  converts a nil `*Poller` to a nil interface — a typed nil would make the page
+  claim a poller exists.
+  The one owner comparison left outside `requireOwner` is in `index`
+  (`view.Owner = readerID == h.store.OwnerID()`): it gates a link, not an
+  endpoint, so it is a rendering decision a registration-time wrapper cannot
+  express — do not "unify" it into the gate.
+  A Lane pass that returns before computing its figures (refusal backoff,
+  sidecar down) carries the previous pass's due count and gap forward rather
+  than recording zeroes; a Lane that has never reached a pace renders no gap at
+  all. `Checked` next to `Due` is what separates a stopped Lane from a quiet
+  one, so neither figure may be dropped from the row.

backend/api_test.go

@@ -48,7 +48,7 @@ func TestMain(m *testing.M) { os.Exit(pgtest.Main(m)) }
 
 func newTestServer(t *testing.T) http.Handler {
 	t.Helper()
-	return newRouter(newTestStore(t), testConfig())
+	return newRouter(newTestStore(t), testConfig(), nil)
 }
 
 func newTestStore(t *testing.T) *store.Store {
@@ -599,7 +599,7 @@ func TestLoadConfigDiscord(t *testing.T) {
 // cooldown and the poller would re-fetch that series on every single tick.
 func TestPutDoesNotClobberLatestCheckedAt(t *testing.T) {
 	s := newTestStore(t)
-	srv := newRouter(s, testConfig())
+	srv := newRouter(s, testConfig(), nil)
 
 	seedForCheck(t, s, "asura:x", "https://asurascans.com/comics/x", 777)
 
@@ -637,7 +637,7 @@ func TestUserscriptServedWithWebUIDisabled(t *testing.T) {
 
 	rr := httptest.NewRecorder()
 	req := httptest.NewRequest(http.MethodGet, "/u/"+ownerCredential()+"/manga-bookmark.user.js", nil)
-	newRouter(s, cfg).ServeHTTP(rr, req)
+	newRouter(s, cfg, nil).ServeHTTP(rr, req)
 	if rr.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200", rr.Code)
 	}
@@ -659,7 +659,7 @@ func TestNovelUserscriptServed(t *testing.T) {
 
 	cfg := testConfig()
 	cfg.NovelUserscriptPath = novelPath
-	srv := newRouter(s, cfg)
+	srv := newRouter(s, cfg, nil)
 
 	rr := httptest.NewRecorder()
 	srv.ServeHTTP(rr, httptest.NewRequest(http.MethodGet,

backend/cover_test.go

@@ -98,7 +98,7 @@ func TestPublicCoverNeverEchoesNonImage(t *testing.T) {
 	if _, err := db.Exec(`UPDATE covers SET content_type = 'text/html' WHERE address = $1`, address); err != nil {
 		t.Fatalf("poison row: %v", err)
 	}
-	rr := getCover(t, newRouter(st, testConfig()), "/covers/"+address, nil)
+	rr := getCover(t, newRouter(st, testConfig(), nil), "/covers/"+address, nil)
 	if rr.Code == http.StatusOK {
 		t.Fatalf("status = 200, want a refusal for a non-image row (body %q)", rr.Body.String())
 	}

backend/internal/latest/poller.go

@@ -57,6 +57,10 @@ type Poller struct {
 	mu            sync.Mutex
 	refuseUntil   map[string]time.Time
 	browserDownAt time.Time
+	// laneStates is the owner's page snapshot of each Lane's last pass
+	// (issue #102), keyed by Site. Guarded by mu; a Site appears only after
+	// its first pass, so a restart renders "no data yet" rather than zeroes.
+	laneStates map[string]LaneState
 	// coverWG tracks in-flight cover work. Covers heal in the background so a
 	// slow cover host cannot delay the next Series-page Poll; tests join it
 	// before asserting on cover fetches.
@@ -218,6 +222,10 @@ func (p *Poller) runOnce(ctx context.Context) {
 // production Lane's rate limit; the deterministic test entry runs back to back.
 func (p *Poller) runLanePass(ctx context.Context, name string, paced bool) time.Duration {
 	now := p.Now()
+	// Snapshot this pass for the owner's page (issue #102). Recorded on every
+	// return path, with the figures filled in where the pass computes them.
+	st := LaneState{Site: name, LastRun: now, Browser: isBrowserSite(name)}
+	defer func() { p.recordLaneState(st) }()
 	if until := p.refusalBackoff(name); now.Before(until) {
 		// Cooling down after a refusal: do not attempt this Site at all.
 		return until.Sub(now)
@@ -238,18 +246,23 @@ func (p *Poller) runLanePass(ctx context.Context, name string, paced bool) time.
 		// No fetcher at all right now (browser absent, no fallback): every
 		// Series stays unstamped and due, so a browser that appears after a
 		// restart finds its full queue waiting (issue #100).
+		st.Gap = defaultGap
 		return defaultGap
 	}
 
 	due, err := p.Store.DueForLatestCheck(name, now.Add(-s.Rest).UnixMilli())
 	if err != nil {
 		log.Printf("latest poll %s: due query: %v", name, err)
+		st.Gap = defaultGap
 		return defaultGap
 	}
+	st.Due = len(due)
 	if s.Browser != nil && f == p.BrowserFetch && !browserWakeDue(due, now, s.Rest) {
 		// Below both thresholds Chrome stays asleep (ADR-0005 on-demand
 		// browser): waking it for a single Poll would cost a challenge solve
-		// per request.
+		// per request. The Lane still paces at the default gap, which is what
+		// the owner's page must show rather than a zero.
+		st.Gap = defaultGap
 		return defaultGap
 	}
 	if s.Browser != nil {
@@ -265,9 +278,11 @@ func (p *Poller) runLanePass(ctx context.Context, name string, paced bool) time.
 	eligible, err := p.Store.EligibleSeriesCount(name)
 	if err != nil {
 		log.Printf("latest poll %s: eligible count: %v", name, err)
+		st.Gap = defaultGap
 		return defaultGap
 	}
 	gap, clamped := effectiveGap(s, eligible)
+	st.Gap, st.Clamped = gap, clamped
 	if clamped {
 		log.Printf("latest poll %s: gap clamped to %s floor (eligible series=%d)", name, minGap, eligible)
 	}
@@ -278,7 +293,6 @@ func (p *Poller) runLanePass(ctx context.Context, name string, paced bool) time.
 	}
 
 	refusals := 0
-	checked := 0
 	for i, sr := range due {
 		if ctx.Err() != nil {
 			break
@@ -313,10 +327,10 @@ func (p *Poller) runLanePass(ctx context.Context, name string, paced bool) time.
 		} else {
 			refusals = 0
 		}
-		checked++
+		st.Checked++
 	}
-	if checked > 0 {
-		log.Printf("latest poll %s: due=%d checked=%d", name, len(due), checked)
+	if st.Checked > 0 {
+		log.Printf("latest poll %s: due=%d checked=%d", name, len(due), st.Checked)
 	}
 	if refusals >= 2 {
 		p.setRefusalBackoff(name, now.Add(refuseBackoff))

backend/internal/latest/poller_test.go

@@ -1580,3 +1580,91 @@ func TestRunOnceClampWarningNamesTheSite(t *testing.T) {
 		t.Fatalf("clamp warning = %q, want it to name asura and 3601", got)
 	}
 }
+
+// The owner's admin page (issue #102) reads Lane state out of the poller.
+// Before any pass the snapshot is empty — a restart must render "no data
+// yet", not zeroes — and each pass records what it saw: the frozen clock,
+// the due count and the pace, with refusal backoff derived at snapshot time.
+func TestLaneStatus(t *testing.T) {
+	s, _ := newTestStore(t)
+	now := time.UnixMilli(5_000_000)
+	p := newTestPoller(t, s, &fakeFetcher{body: asuraSeriesFixture, status: 200}, now)
+
+	if st := p.LaneStatus(); len(st.Lanes) != 0 {
+		t.Fatalf("lanes before any pass = %d, want 0 (nothing has run)", len(st.Lanes))
+	} else if st.BrowserConfigured || st.BrowserReachable {
+		t.Fatalf("browser before any pass = configured=%v reachable=%v, want false without a browser fetcher", st.BrowserConfigured, st.BrowserReachable)
+	}
+
+	seedForCheck(t, s, "asura:chronicles", "https://asurascans.com/series/chronicles", 0)
+	// Two refusals put kagane's Lane into backoff; asura sits on its own Lane.
+	browser := &fakeFetcher{status: 403}
+	p.BrowserFetch = browser
+	for i := range 2 {
+		key := fmt.Sprintf("kagane:s%d", i)
+		seedForCheck(t, s, key, "https://kagane.to/series/"+key[7:], 0)
+	}
+	p.runOnce(context.Background())
+
+	st := p.LaneStatus()
+	var asura, kagane LaneState
+	for _, lane := range st.Lanes {
+		switch lane.Site {
+		case "asura":
+			asura = lane
+		case "kagane":
+			kagane = lane
+		}
+	}
+	if st.Lanes[0].Site != "asura" {
+		t.Fatalf("first lane = %q, want asura (snapshot sorted by Site)", st.Lanes[0].Site)
+	}
+	if asura.Site == "" {
+		t.Fatalf("asura missing from snapshot: %+v", st.Lanes)
+	}
+	if !asura.LastRun.Equal(now) {
+		t.Fatalf("asura LastRun = %s, want the frozen clock %s", asura.LastRun, now)
+	}
+	if asura.Due != 1 {
+		t.Fatalf("asura Due = %d, want 1", asura.Due)
+	}
+	if asura.Gap == 0 {
+		t.Fatal("asura Gap = 0, want the Lane's pace")
+	}
+	if asura.Browser || asura.Refusing {
+		t.Fatalf("asura = %+v, want a TLS Lane that is not refusing", asura)
+	}
+	if !kagane.Browser || !kagane.Refusing {
+		t.Fatalf("kagane = %+v, want a browser Lane in refusal backoff", kagane)
+	}
+	if !st.BrowserConfigured || !st.BrowserReachable {
+		t.Fatalf("browser after round = configured=%v reachable=%v, want true/true (sidecar never lost)", st.BrowserConfigured, st.BrowserReachable)
+	}
+	if asura.Checked != 1 {
+		t.Fatalf("asura Checked = %d, want the one Series it read", asura.Checked)
+	}
+
+	// A pass that declines to look (kagane is now in backoff) must not restate
+	// the figures it never gathered as zeroes: the last real pass's due count
+	// and pace stand until a pass replaces them.
+	before := kagane
+	if before.Due == 0 || before.Gap == 0 {
+		t.Fatalf("kagane after its refusing pass = %+v, want the figures that pass gathered", before)
+	}
+	p.runOnce(context.Background())
+	for _, lane := range p.LaneStatus().Lanes {
+		if lane.Site != "kagane" {
+			continue
+		}
+		if lane.Due != before.Due || lane.Gap != before.Gap {
+			t.Fatalf("kagane after a skipped pass = due %d gap %s, want the previous pass's %d / %s",
+				lane.Due, lane.Gap, before.Due, before.Gap)
+		}
+	}
+
+	// A lost sidecar reads as unreachable for the same window the Lanes skip.
+	p.setBrowserDown(now)
+	if st := p.LaneStatus(); !st.BrowserConfigured || st.BrowserReachable {
+		t.Fatalf("browser after loss = configured=%v reachable=%v, want true/false", st.BrowserConfigured, st.BrowserReachable)
+	}
+}

backend/internal/latest/status.go

@@ -0,0 +1,74 @@
+package latest
+
+import "time"
+
+// LaneState is the administrative page's view of one Poll Lane (issue #102):
+// what the Lane's last pass saw. Due, Gap and Checked are filled in as the
+// pass computes them; a pass that returned before reaching a figure (refusal
+// backoff, sidecar down) carries the previous pass's figures forward rather
+// than overwriting them with zeroes the page would state as fact.
+type LaneState struct {
+	Site    string
+	Due     int
+	LastRun time.Time
+	Gap     time.Duration
+	// Checked is how many Series this pass actually read. A Lane with Series
+	// due and nothing checked has stopped working; one with nothing due is
+	// merely quiet, and the page must not draw the two the same (story 13).
+	Checked  int
+	Clamped  bool
+	Refusing bool
+	Browser  bool
+}
+
+// Status is the owner's page snapshot of the whole poller (issue #102).
+type Status struct {
+	Lanes             []LaneState
+	BrowserConfigured bool
+	BrowserReachable  bool
+}
+
+// LaneStatus returns a copy of the poller's Lane state for the owner's page.
+// Only Sites that have completed a pass appear — a restart therefore renders
+// "no data yet" instead of confident zeroes — in the same order Run iterates.
+// Refusing is derived at snapshot time from the refusal backoff, not stored,
+// so a Lane that cooled down between passes reports false without a new pass.
+// BrowserReachable mirrors the Lanes' own gate: the sidecar is down only
+// within the refuseBackoff window since its last loss.
+func (p *Poller) LaneStatus() Status {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	lanes := make([]LaneState, 0, len(p.laneStates))
+	now := p.Now()
+	for _, name := range laneNames() {
+		st, ok := p.laneStates[name]
+		if !ok {
+			continue
+		}
+		st.Refusing = now.Before(p.refuseUntil[name])
+		lanes = append(lanes, st)
+	}
+	configured := p.BrowserFetch != nil
+	reachable := configured
+	if reachable && !p.browserDownAt.IsZero() && now.Sub(p.browserDownAt) < refuseBackoff {
+		reachable = false
+	}
+	return Status{Lanes: lanes, BrowserConfigured: configured, BrowserReachable: reachable}
+}
+
+// recordLaneState stores one Lane's last pass for LaneStatus. Called deferred
+// from runLanePass so every return path records, even a pass that refused.
+// A pass that never reached the pace (Gap zero) keeps the last pass's figures:
+// the Lane's due count and gap did not become zero because this pass declined
+// to look, and the row's own marks say why it declined.
+func (p *Poller) recordLaneState(st LaneState) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	if p.laneStates == nil {
+		p.laneStates = make(map[string]LaneState)
+	}
+	if prev, ok := p.laneStates[st.Site]; ok && st.Gap == 0 {
+		st.Due, st.Gap, st.Clamped, st.Checked = prev.Due, prev.Gap, prev.Clamped, prev.Checked
+	}
+	p.laneStates[st.Site] = st
+}

backend/internal/store/migrations/0010_reader_sightings.sql

@@ -0,0 +1,6 @@
+-- The owner's administrative page (issue #102) renders these counters and
+-- offers a control to clear them, deliberately shipped before the Sighting
+-- feature (issue #103) that fills them, so a false mark never needs SQL
+-- against production. Zero counters mean a trusted Reader.
+ALTER TABLE readers ADD COLUMN sighting_agreements integer NOT NULL DEFAULT 0;
+ALTER TABLE readers ADD COLUMN sighting_disagreements integer NOT NULL DEFAULT 0;

backend/internal/store/store.go

@@ -315,25 +315,42 @@ func (s *Store) EnsureReader(discordID string, epochZeroHash [32]byte) (int64, e
 	return id, nil
 }
 
+// SightingDisagreementLimit is the number of contradictions that stop that
+// Reader's Sightings from deferring a Poll (issue #103). The counters exist
+// before the mechanism that moves them, so the admin page (issue #102) can
+// clear a false mark without waiting for the Sighting feature.
+const SightingDisagreementLimit = 3
+
+// Blocked reports whether this Reader's Sighting marks have reached the
+// disagreement limit, which stops their Sightings from deferring a Poll.
+func (r ReaderSummary) Blocked() bool {
+	return r.Disagreements >= SightingDisagreementLimit
+}
+
 // ReaderSummary is one Reader as the owner's administration panel sees them:
-// who they are and how many live sessions they hold. No credential material,
-// hashed or otherwise, is exposed.
+// who they are, how many live sessions they hold, and their Sighting marks.
+// No credential material, hashed or otherwise, is exposed.
 type ReaderSummary struct {
 	ID        int64
 	DiscordID string
 	// Sessions counts unexpired session rows — what the owner revokes.
 	Sessions int
+	// Agreements and Disagreements are the Sighting counters (issue #102);
+	// zero means a trusted Reader.
+	Agreements    int
+	Disagreements int
 }
 
-// Readers lists every Reader with their live session count, oldest first, so
-// the owner row (always the oldest) heads the list.
+// Readers lists every Reader with their live session count and Sighting
+// marks, oldest first, so the owner row (always the oldest) heads the list.
 func (s *Store) Readers() ([]ReaderSummary, error) {
 	rows, err := s.db.Query(`
 		SELECT r.id, r.discord_id,
+		       r.sighting_agreements, r.sighting_disagreements,
 		       count(sess.id) FILTER (WHERE sess.expires_at > now()) AS sessions
 		FROM readers r
 		LEFT JOIN sessions sess ON sess.reader_id = r.id
-		GROUP BY r.id, r.discord_id
+		GROUP BY r.id, r.discord_id, r.sighting_agreements, r.sighting_disagreements
 		ORDER BY r.id`)
 	if err != nil {
 		return nil, fmt.Errorf("query readers: %w", err)
@@ -343,7 +360,7 @@ func (s *Store) Readers() ([]ReaderSummary, error) {
 	out := []ReaderSummary{}
 	for rows.Next() {
 		var r ReaderSummary
-		if err := rows.Scan(&r.ID, &r.DiscordID, &r.Sessions); err != nil {
+		if err := rows.Scan(&r.ID, &r.DiscordID, &r.Agreements, &r.Disagreements, &r.Sessions); err != nil {
 			return nil, fmt.Errorf("scan reader: %w", err)
 		}
 		out = append(out, r)
@@ -351,6 +368,18 @@ func (s *Store) Readers() ([]ReaderSummary, error) {
 	return out, rows.Err()
 }
 
+// ClearReaderMarks zeroes a Reader's Sighting counters. It is the owner's
+// remedy for a mark produced by a broken Site adapter rather than a dishonest
+// Reader: it restores a privilege, it is not destruction.
+func (s *Store) ClearReaderMarks(readerID int64) error {
+	if _, err := s.db.Exec(`
+		UPDATE readers SET sighting_agreements = 0, sighting_disagreements = 0
+		WHERE id = $1`, readerID); err != nil {
+		return fmt.Errorf("clear reader marks for reader %d: %w", readerID, err)
+	}
+	return nil
+}
+
 // readersMigration is the version that creates the readers table. The owner
 // seed runs between two migrate passes, so that the run-once migration which
 // attaches existing bookmarks (0004) finds the owner row.

backend/internal/store/store_test.go

@@ -1334,6 +1334,86 @@ func TestReadersAndSessionRevocation(t *testing.T) {
 	}
 }
 
+// The Sighting counters ship before the mechanism that fills them (issue
+// #102 before #103), so the admin page depends on their default: a fresh
+// Reader reads back trusted. Marking one directly proves Readers() reports
+// the counters and Blocked() flips at the limit, and that ClearReaderMarks —
+// the owner's remedy for a false mark — zeroes them again.
+func TestReaderSightingMarks(t *testing.T) {
+	s := newTestStore(t)
+	other := secondReader(t, s)
+
+	readers, err := s.Readers()
+	if err != nil {
+		t.Fatalf("Readers: %v", err)
+	}
+	if len(readers) != 2 {
+		t.Fatalf("readers = %d, want the owner and the second Reader", len(readers))
+	}
+	for _, r := range readers {
+		if r.Agreements != 0 || r.Disagreements != 0 || r.Blocked() {
+			t.Fatalf("fresh reader %d has marks: %+v", r.ID, r)
+		}
+	}
+
+	// The counters' default is the trusted state; writing them directly is
+	// the only way to exercise the read path until issue #103 moves them.
+	if _, err := s.db.Exec(`
+		UPDATE readers SET sighting_agreements = 5, sighting_disagreements = 2
+		WHERE id = $1`, other); err != nil {
+		t.Fatalf("mark reader: %v", err)
+	}
+	readers, err = s.Readers()
+	if err != nil {
+		t.Fatalf("Readers: %v", err)
+	}
+	var marked *ReaderSummary
+	for i := range readers {
+		if readers[i].ID == other {
+			marked = &readers[i]
+		}
+	}
+	if marked == nil || marked.Agreements != 5 || marked.Disagreements != 2 {
+		t.Fatalf("marked reader = %+v, want agreements 5, disagreements 2", marked)
+	}
+	if marked.Blocked() {
+		t.Fatalf("reader with 2 disagreements is blocked; limit is %d", SightingDisagreementLimit)
+	}
+
+	if _, err := s.db.Exec(`
+		UPDATE readers SET sighting_disagreements = 3 WHERE id = $1`, other); err != nil {
+		t.Fatalf("block reader: %v", err)
+	}
+	readers, err = s.Readers()
+	if err != nil {
+		t.Fatalf("Readers: %v", err)
+	}
+	for _, r := range readers {
+		if r.ID == other && !r.Blocked() {
+			t.Fatalf("reader at the disagreement limit is not blocked: %+v", r)
+		}
+		if r.ID == s.OwnerID() && r.Blocked() {
+			t.Fatalf("untouched owner became blocked: %+v", r)
+		}
+	}
+
+	if err := s.ClearReaderMarks(other); err != nil {
+		t.Fatalf("ClearReaderMarks: %v", err)
+	}
+	if err := s.ClearReaderMarks(other + 9999); err != nil {
+		t.Fatalf("ClearReaderMarks(unknown id): %v", err)
+	}
+	readers, err = s.Readers()
+	if err != nil {
+		t.Fatalf("Readers: %v", err)
+	}
+	for _, r := range readers {
+		if r.Agreements != 0 || r.Disagreements != 0 || r.Blocked() {
+			t.Fatalf("reader %d not cleared: %+v", r.ID, r)
+		}
+	}
+}
+
 // Two Readers on one Series: one series row, two independent progresses. The
 // second Reader starts at zero however far the first has read, and the shared
 // row is still due exactly once.

backend/internal/web/admin.go

@@ -0,0 +1,251 @@
+package web
+
+import (
+	"log"
+	"net/http"
+	"strconv"
+	"time"
+
+	"bookmarkmanager/backend/internal/latest"
+	"bookmarkmanager/backend/internal/store"
+)
+
+// LaneReporter is the administrative page's whole window onto the running
+// poller: one snapshot of Poll Lane state, copied out of memory on request.
+// The Poller satisfies it in production and a fake with fixed values satisfies
+// it in tests, so the page's tests need neither a poller nor a Site.
+type LaneReporter interface {
+	LaneStatus() latest.Status
+}
+
+// adminView is what the administrative page and the roster fragment receive.
+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
+}
+
+// lanesView is the Lane status block: one row per Site that has run, plus the
+// browser fact, which is shared by the three browser Sites rather than held
+// once per Site.
+type lanesView struct {
+	Rows []laneRow
+	// PollerOff means no poller is running at all (disabled by config, or its
+	// client could not be built). The browser line must not answer "not
+	// configured" then: the sidecar is not the reason nothing is polled.
+	PollerOff         bool
+	BrowserConfigured bool
+	BrowserReachable  bool
+}
+
+// laneRow is one Lane formatted for reading rather than for arithmetic: the
+// template renders strings and flags, and every judgement about what they mean
+// is made here.
+type laneRow struct {
+	Site string
+	Due  int
+	Ran  string
+	// Checked is how many Series the last pass read. Due without Checked is a
+	// Lane that has stopped working; the two figures side by side are what
+	// separate that from a Lane with nothing to do.
+	Checked int
+	// Gap is empty when no pass has reached the pace yet, so the row omits the
+	// figure instead of stating a zero.
+	Gap      string
+	Clamped  bool
+	Refusing bool
+	// BrowserLost marks a Lane whose pages can only be read through the
+	// sidecar while the sidecar is unreachable — including the case where none
+	// is configured, which stops those Series just as completely.
+	BrowserLost bool
+	// Stalled marks a Lane with Series waiting that its last pass did not read
+	// — the difference between a stopped Lane and a quiet one (story 13).
+	Stalled bool
+	// Attention is the one flag the template colours on, so an unhealthy Lane
+	// is found at a glance rather than read for.
+	Attention bool
+}
+
+// adminRoute pairs a route pattern with its handler so the route list and the
+// gate cannot drift apart.
+type adminRoute struct {
+	pattern string
+	handler http.HandlerFunc
+}
+
+// adminRoutes is every route that reaches past the acting Reader. Register
+// wraps each one in requireOwner, so a new administrative route is gated by
+// being listed here rather than by remembering to write a check inside it.
+func (h *Handler) adminRoutes() []adminRoute {
+	return []adminRoute{
+		{"GET /admin", h.admin},
+		{"GET /ui/admin/lanes", h.uiLanes},
+		{"POST /readers/{id}/revoke", h.revokeReaderSessions},
+		{"POST /readers/{id}/clear-marks", h.clearReaderMarks},
+	}
+}
+
+// AdminPatterns names every administrative route, so one test can prove the
+// owner gate covers all of them rather than one test per route. The receiver is
+// nil because only the patterns are read; the bound handlers are never called.
+func AdminPatterns() []string {
+	routes := (*Handler)(nil).adminRoutes()
+	out := make([]string, 0, len(routes))
+	for _, rt := range routes {
+		out = append(out, rt.pattern)
+	}
+	return out
+}
+
+// requireOwner is the owner test, in one place, layered on the session gate: no
+// session is still 401, and a signed-in Reader who is not the owner gets 404
+// rather than 403 — a refusal that confirms the address exists is a refusal
+// that helps whoever is probing for it.
+func (h *Handler) requireOwner(next http.HandlerFunc) http.HandlerFunc {
+	return h.requireSession(func(w http.ResponseWriter, r *http.Request) {
+		if readerOf(r) != h.store.OwnerID() {
+			http.NotFound(w, r)
+			return
+		}
+		next(w, r)
+	})
+}
+
+// admin renders the owner's page: the Reader roster and Poll Lane status.
+func (h *Handler) admin(w http.ResponseWriter, r *http.Request) {
+	readers, err := h.store.Readers()
+	if err != nil {
+		log.Printf("admin: %v", err)
+		http.Error(w, "internal error", http.StatusInternalServerError)
+		return
+	}
+	h.render(w, http.StatusOK, "admin", adminView{
+		Readers: readers,
+		OwnerID: h.store.OwnerID(),
+		Lanes:   h.lanesView(),
+	})
+}
+
+// uiLanes answers the status block's own refresh. Only the block refreshes on a
+// timer; the roster re-renders after an action, as it always has.
+func (h *Handler) uiLanes(w http.ResponseWriter, r *http.Request) {
+	h.render(w, http.StatusOK, "lanes", h.lanesView())
+}
+
+// lanesView copies the poller's snapshot into display form. A nil reporter (no
+// poller running) and a poller no Lane has reported to yet are the same thing
+// to the page: no data, which it must say rather than draw as confident zeroes
+// — an empty page a few seconds after a restart must not read as a stopped one.
+func (h *Handler) lanesView() lanesView {
+	if h.lanes == nil {
+		return lanesView{PollerOff: true}
+	}
+	snap := h.lanes.LaneStatus()
+	v := lanesView{
+		Rows:              make([]laneRow, 0, len(snap.Lanes)),
+		BrowserConfigured: snap.BrowserConfigured,
+		BrowserReachable:  snap.BrowserReachable,
+	}
+	now := time.Now()
+	for _, l := range snap.Lanes {
+		lost := l.Browser && !snap.BrowserReachable
+		// Series waiting and none read is the shape of a Lane that has stopped
+		// working, as distinct from one that is quiet for want of work.
+		stalled := l.Due > 0 && l.Checked == 0
+		gap := ""
+		if l.Gap > 0 {
+			gap = l.Gap.Truncate(time.Second).String()
+		}
+		v.Rows = append(v.Rows, laneRow{
+			Site:        l.Site,
+			Due:         l.Due,
+			Ran:         since(now, l.LastRun),
+			Checked:     l.Checked,
+			Gap:         gap,
+			Clamped:     l.Clamped,
+			Refusing:    l.Refusing,
+			BrowserLost: lost,
+			Stalled:     stalled,
+			Attention:   l.Clamped || l.Refusing || lost || stalled,
+		})
+	}
+	return v
+}
+
+// since formats how long ago a Lane last ran, at second resolution: the block
+// refreshes every thirty seconds, so anything finer is noise the owner would
+// have to ignore.
+func since(now, then time.Time) string {
+	d := now.Sub(then).Truncate(time.Second)
+	if d < time.Second {
+		return "just now"
+	}
+	return d.String() + " ago"
+}
+
+// revokeReaderSessions logs one Reader out of every browser they are signed in
+// on. The owner gate is the route's, not this handler's.
+func (h *Handler) revokeReaderSessions(w http.ResponseWriter, r *http.Request) {
+	target, ok := readerPathID(w, r)
+	if !ok {
+		return
+	}
+	// The owner is not one of the Readers this endpoint reaches: revoking
+	// themselves would sign out the browser making the request, which is what
+	// logout is for. The roster hides the button; this refuses the hand-rolled
+	// POST behind it.
+	if target == h.store.OwnerID() {
+		http.NotFound(w, r)
+		return
+	}
+	if err := h.store.DeleteReaderSessions(target); err != nil {
+		log.Printf("revoke sessions: %v", err)
+		http.Error(w, "internal error", http.StatusInternalServerError)
+		return
+	}
+	h.renderRoster(w, "revoke sessions")
+}
+
+// clearReaderMarks zeroes one Reader's Sighting counters. The guard those
+// counters feed has one known false positive — a Site changing its page shape
+// makes a correct adapter read a wrong high number and marks every honest
+// Reader of that Site at once (issue #103) — and this is its remedy. It
+// restores a privilege rather than destroying anything, so the control is
+// confirmed but never wears the destruction accent.
+func (h *Handler) clearReaderMarks(w http.ResponseWriter, r *http.Request) {
+	target, ok := readerPathID(w, r)
+	if !ok {
+		return
+	}
+	if err := h.store.ClearReaderMarks(target); err != nil {
+		log.Printf("clear marks: %v", err)
+		http.Error(w, "internal error", http.StatusInternalServerError)
+		return
+	}
+	h.renderRoster(w, "clear marks")
+}
+
+// readerPathID reads the Reader a route names, answering the request itself
+// when there is nobody to act on.
+func readerPathID(w http.ResponseWriter, r *http.Request) (int64, bool) {
+	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
+	if err != nil {
+		http.Error(w, "bad reader id", http.StatusBadRequest)
+		return 0, false
+	}
+	return id, true
+}
+
+// renderRoster answers an action with the whole roster, so the counts and marks
+// it shows cannot describe the state before the tap.
+func (h *Handler) renderRoster(w http.ResponseWriter, what string) {
+	readers, err := h.store.Readers()
+	if err != nil {
+		log.Printf("%s: %v", what, err)
+		http.Error(w, "internal error", http.StatusInternalServerError)
+		return
+	}
+	h.render(w, http.StatusOK, "readers", adminView{Readers: readers, OwnerID: h.store.OwnerID()})
+}

backend/internal/web/static/style.css

@@ -87,6 +87,11 @@
   --moss: #7fae86;         /* finished */
   --clay: #b5906f;         /* set chapter */
   --trash: #977671;        /* remove, resting — icons need 3:1, not 4.5:1 */
+  /* A Lane needing attention: the admin page's only accent. Verdigris — cool,
+     the far side of the wheel from ember's crimson, and clear of the archive
+     blue. Neither ember (new chapter) nor danger (destruction) may say
+     "system unhealthy". */
+  --patina: #5fb3a6;
 
   /* Desktop cell borders for the two coloured action states. */
   --play-hot-line: #3a1d18;
@@ -146,6 +151,7 @@
     --moss: #3d6c46;
     --clay: #7c5533;
     --trash: #8c6558;
+    --patina: #1f6f66;
 
     --play-hot-line: #f0cfc6;
     --fav-line: #e3d3a4;
@@ -290,9 +296,21 @@ button { cursor: pointer; }
   letter-spacing: .04em;
 }
 
-/* ---- reader roster (owner only): same hairline panel, one row per Reader ---- */
-.readerlist { margin: 0; padding: 0; list-style: none; }
-.readerlist li {
+/* ---- admin page: two sections on the same measured sheet, no cards ----
+   The reading page is a list of series; this is a list of facts. Both are
+   sheets of hairline-separated rows, so the roster keeps the shape it had as
+   a fold-out and the Lane block copies it. */
+.readers, .lanes { margin: 0 20px; padding: 12px 0 16px; border-bottom: 1px solid var(--rule); }
+.readers h2, .lanes h2 {
+  margin: 0;
+  padding: 8px 0;
+  font: 500 10px/1 var(--font-mono);
+  letter-spacing: .2em;
+  text-transform: uppercase;
+  color: var(--mute-2);
+}
+.readerlist, .lanelist { margin: 0; padding: 0; list-style: none; }
+.readerlist li, .lanelist li {
   display: flex;
   align-items: center;
   flex-wrap: wrap;
@@ -300,7 +318,8 @@ button { cursor: pointer; }
   min-height: 44px;
   border-top: 1px solid var(--rule);
 }
-.readerlist form { margin: 0 0 0 auto; }
+.reader-actions { display: flex; gap: 18px; margin-left: auto; }
+.readerlist form { margin: 0; }
 .reader-id {
   font: 500 13px/1.4 var(--font-mono);
   letter-spacing: .04em;
@@ -312,6 +331,30 @@ button { cursor: pointer; }
   text-transform: uppercase;
   color: var(--mute);
 }
+.reader-sightings, .lane-fact {
+  font: 500 10px/1 var(--font-mono);
+  letter-spacing: .14em;
+  text-transform: uppercase;
+  color: var(--mute-2);
+}
+/* Two states the owner is meant to find rather than read for: a Reader whose
+   reports no longer defer a Poll, and a Lane that is not keeping its promise.
+   Both wear --patina — never ember, which means one thing, and never danger,
+   which is destruction. */
+.reader-blocked, .lane-mark {
+  font: 500 10px/1 var(--font-mono);
+  letter-spacing: .14em;
+  text-transform: uppercase;
+  color: var(--patina);
+}
+.lane-site {
+  font: 400 19px/1.2 var(--font-display);
+  color: var(--paper-dim);
+}
+/* The whole row leans patina when the Lane needs attention, so the scan is one
+   pass down the left edge rather than a read of every mark. */
+.lanelist li.attention .lane-site { color: var(--patina); }
+.lane-browser { padding: 12px 0 0; }
 /* Revocation cuts someone off, so it wears --danger. Ember stays reserved for
    the new-chapter signal. */
 .ghost.danger { color: var(--danger); }
@@ -600,6 +643,9 @@ button { cursor: pointer; }
   box-shadow: inset 0 -2px 0 var(--ember);
 }
 .topbar form { margin-left: 18px; }
+/* The admin page's topbar has no switch to fill the middle, so its back link
+   keeps company with Log out at the right edge instead of floating centre. */
+.topbar .back { margin-left: auto; }
 /* At phone width brand + switch + Log out do not fit on one line, so the
    switch takes its own row under the wordmark rather than pushing Log out
    off-screen. */
@@ -609,6 +655,9 @@ button { cursor: pointer; }
   .libswitch { order: 3; margin-left: 0; }
   .libswitch a { flex: 1; text-align: center; padding: 8px 14px; }
   .topbar form { margin-left: 12px; }
+  /* The admin page has no switch to take the second row, so its brand claims
+     the first outright and the back link keeps Log out company below. */
+  .topbar:has(.back) .brand { flex: 1 1 100%; }
 }
 
 /* ---- action strip: full-width on a phone, hairline-divided cells ---- */

backend/internal/web/templates/admin.html

@@ -0,0 +1,39 @@
+{{/* The owner's administrative page: everything that reaches past one Reader,
+     at its own address so it can be bookmarked rather than hunted for inside
+     the reading page. Owner-only at route registration (requireOwner), which
+     is why nothing in here re-tests who is asking. */}}
+{{define "admin"}}
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
+  <meta name="color-scheme" content="dark light">
+  <title>BookmarkManager — Admin</title>
+  <link rel="icon" href="/static/logo.svg" type="image/svg+xml">
+  <link rel="stylesheet" href="/static/style.css">
+  <link rel="preload" href="/static/fonts/instrument-serif-400-latin.woff2" as="font" type="font/woff2" crossorigin>
+  <script src="/static/htmx.min.js" defer></script>
+</head>
+<body>
+<div class="sheet">
+  <header class="topbar">
+    <h1 class="brand">{{template "mark" .}}<span>Bookmark<em>Manager</em></span></h1>
+    {{/* Back to the library, no switch: this page belongs to neither library,
+         and the ember-lit switch says which library you are reading. */}}
+    <a class="ghost back" href="/">Library</a>
+    <form method="post" action="/logout">
+      <button type="submit" class="ghost">Log out</button>
+    </form>
+  </header>
+
+  {{/* The live region wraps the swapped block rather than being it: the
+       refresh replaces the section wholesale, and a region recreated on every
+       update is never announced. */}}
+  <div aria-live="polite">{{template "lanes" .Lanes}}</div>
+
+  {{template "readers" .}}
+</div>
+</body>
+</html>
+{{end}}

backend/internal/web/templates/app.html

@@ -28,6 +28,10 @@
       <a href="/?lib=novel&amp;tab=all" class="{{if eq .Lib "novel"}}active{{end}}"
          {{if eq .Lib "novel"}}aria-current="page"{{end}}>Novels</a>
     </nav>
+    {{/* The owner's only difference on this page: a link out to the
+         administrative one. It sits beside Log out rather than in the library
+         switch — that switch says which library, not which page. */}}
+    {{if .Owner}}<a class="ghost" href="/admin">Admin</a>{{end}}
     <form method="post" action="/logout">
       <button type="submit" class="ghost">Log out</button>
     </form>
@@ -76,8 +80,6 @@
 
   {{template "setup" .}}
 
-  {{if .Owner}}{{template "readers" .}}{{end}}
-
   {{template "keyrow" .}}
 
   {{template "recent" .}}

backend/internal/web/templates/lanes.html

@@ -0,0 +1,41 @@
+{{/* Poll Lane status: one row per Site, refreshing itself so a run can be
+     watched rather than sampled by reloading. The refresh is one attribute on
+     the fragment root and the endpoint answers with this same fragment, so the
+     swap replaces the element that asked for it.
+
+     Every figure here is read out of the running poller, never out of a table:
+     a Site absent from Rows has not completed a pass since the last restart,
+     which the empty state must say — zeroes would read as a stopped Lane. */}}
+{{define "lanes"}}
+<section class="lanes" id="lanes"
+         hx-get="/ui/admin/lanes" hx-trigger="every 30s" hx-swap="outerHTML">
+  <h2>Poll Lanes</h2>
+  {{if .Rows}}
+  <ul class="lanelist">
+    {{range .Rows}}
+    <li{{if .Attention}} class="attention"{{end}}>
+      <span class="lane-site">{{.Site}}</span>
+      <span class="lane-fact">{{.Due}} due</span>
+      <span class="lane-fact">{{.Checked}} checked</span>
+      <span class="lane-fact">ran {{.Ran}}</span>
+      {{if .Gap}}<span class="lane-fact">gap {{.Gap}}</span>{{end}}
+      {{if .Clamped}}<span class="lane-mark">gap at floor</span>{{end}}
+      {{if .Refusing}}<span class="lane-mark">refusing</span>{{end}}
+      {{if .BrowserLost}}<span class="lane-mark">no browser</span>{{end}}
+      {{if .Stalled}}<span class="lane-mark">not checking</span>{{end}}
+    </li>
+    {{end}}
+  </ul>
+  {{else}}
+  <p class="setup-copy">No data yet — no Lane has completed a pass since the
+    backend started.</p>
+  {{end}}
+  <p class="setup-copy lane-browser">
+    {{if .PollerOff}}Polling is switched off in this deployment: no Lane runs,
+    and Latest Chapter comes from the userscripts alone.
+    {{else}}Browser sidecar:
+    {{if not .BrowserConfigured}}not configured — comix, kagane and novelfull
+    pages are not fetched through it{{else if .BrowserReachable}}reachable
+    {{else}}unreachable{{end}}.{{end}}</p>
+</section>
+{{end}}

backend/internal/web/templates/readers.html

@@ -1,29 +1,48 @@
-{{/* The owner's Reader roster. Rendered only for the owner (listView.Owner),
-     and re-rendered whole as the response to a revocation so the session
-     counts cannot describe the state before the tap. Revocation is
-     confirm-gated: it signs someone out of every device at once. */}}
+{{/* The Reader roster, on the owner's administrative page. Re-rendered whole
+     as the response to an action so the counts and marks it shows cannot
+     describe the state before the tap. Both actions are confirm-gated: one
+     signs a Reader out of every device at once, the other wipes a record.
+
+     Owner-only at route registration, so nothing here re-tests who is asking. */}}
 {{define "readers"}}
-<details class="setup" id="readers">
-  <summary>Readers</summary>
+<section class="readers" id="readers">
+  <h2>Readers</h2>
   <p class="setup-copy">Everyone who has signed in through Discord. Revoking
     signs a Reader out of every device; their library and bookmarks are
-    untouched, and they can sign in again.</p>
+    untouched, and they can sign in again. The Sighting counters record how
+    often a later Poll confirmed or contradicted what that Reader's browser
+    reported; enough contradictions stop their reports deferring a Poll, and
+    clearing the marks gives that back.</p>
   <ul class="readerlist">
     {{range .Readers}}
     <li>
       <span class="reader-id">{{.DiscordID}}</span>
       <span class="reader-sessions">{{.Sessions}} session{{if ne .Sessions 1}}s{{end}}</span>
-      {{/* The owner's own row never offers Revoke: it is the one row where the
-           button would sign the tapping browser out, and the endpoint refuses
-           it anyway. Logout is the deliberate way to do that. */}}
-      {{if and .Sessions (ne .ID $.OwnerID)}}
-      <form hx-post="/readers/{{.ID}}/revoke" hx-target="#readers" hx-swap="outerHTML"
-            hx-confirm="Revoking signs this Reader out on every device immediately. Revoke?">
-        <button type="submit" class="ghost danger">Revoke sessions</button>
-      </form>
-      {{end}}
+      <span class="reader-sightings">{{.Agreements}} confirmed / {{.Disagreements}} contradicted</span>
+      {{/* Blocked is spelled out rather than left to be worked out from two
+           numbers and a threshold. */}}
+      {{if .Blocked}}<span class="reader-blocked">deferral blocked</span>{{end}}
+      <span class="reader-actions">
+        {{/* Clearing restores a privilege, so it is a plain ghost button —
+             the destruction accent belongs to revocation alone. It is offered
+             on every row, including one reading zero: the remedy must be
+             findable before the counters climb, not after. */}}
+        <form hx-post="/readers/{{.ID}}/clear-marks" hx-target="#readers" hx-swap="outerHTML"
+              hx-confirm="Clearing wipes this Reader's whole Sighting record, confirmations included. Clear?">
+          <button type="submit" class="ghost">Clear marks</button>
+        </form>
+        {{/* The owner's own row never offers Revoke: it is the one row where the
+             button would sign the tapping browser out, and the endpoint refuses
+             it anyway. Logout is the deliberate way to do that. */}}
+        {{if and .Sessions (ne .ID $.OwnerID)}}
+        <form hx-post="/readers/{{.ID}}/revoke" hx-target="#readers" hx-swap="outerHTML"
+              hx-confirm="Revoking signs this Reader out on every device immediately. Revoke?">
+          <button type="submit" class="ghost danger">Revoke sessions</button>
+        </form>
+        {{end}}
+      </span>
     </li>
     {{end}}
   </ul>
-</details>
+</section>
 {{end}}

backend/internal/web/web.go

@@ -50,6 +50,9 @@ type Handler struct {
 	// httpClient is the plain stdlib client that talks to Discord. It is not
 	// an injected interface: tests point APIBase at a stub server instead.
 	httpClient *http.Client
+	// lanes is the Poll Lane snapshot source the administrative page reads.
+	// Nil is a running deployment with no poller, not a bug.
+	lanes LaneReporter
 }
 
 // listView is what every list-rendering template receives.
@@ -77,14 +80,9 @@ type listView struct {
 	// It is not "newly registered": a Reader who deletes their last bookmark is
 	// in the same position and needs the same links.
 	EmptyLibrary bool
-	// Owner marks the acting Reader as the deployment's owner, which unlocks
-	// the Readers panel. Nothing else in the UI differs.
+	// Owner marks the acting Reader as the deployment's owner, which offers
+	// the link to the administrative page. Nothing else in the UI differs.
 	Owner bool
-	// Readers is the owner's roster, populated only for the owner's own page
-	// render and the revocation fragment. OwnerID travels with it so the roster
-	// can tell the owner's own row apart from the Readers they may revoke.
-	Readers []store.ReaderSummary
-	OwnerID int64
 }
 
 // PageURL and ListURL are the two link shapes every tab needs. Building them
@@ -111,7 +109,10 @@ type loginView struct {
 
 // New parses every template up front so a broken one kills the process at
 // startup rather than the first request that touches it.
-func New(s *store.Store, discord DiscordConfig, tokenKey []byte, mangaPath, novelPath string) (*Handler, error) {
+//
+// lanes is the administrative page's window onto the running Poller; nil means
+// nothing is polling, which the page reports rather than hides.
+func New(s *store.Store, discord DiscordConfig, tokenKey []byte, mangaPath, novelPath string, lanes LaneReporter) (*Handler, error) {
 	tmpl, err := template.ParseFS(templateFS, "templates/*.html")
 	if err != nil {
 		return nil, err
@@ -126,6 +127,7 @@ func New(s *store.Store, discord DiscordConfig, tokenKey []byte, mangaPath, nove
 		states:              newOAuthStates(),
 		limiter:             session.NewLoginLimiter(),
 		httpClient:          &http.Client{Timeout: discordTimeout},
+		lanes:               lanes,
 	}, nil
 }
 
@@ -149,9 +151,11 @@ func (h *Handler) Register(mux *http.ServeMux) {
 	mux.HandleFunc("GET /install/manga-bookmark.user.js", h.requireSession(h.installUserscript("manga-bookmark.user.js")))
 	mux.HandleFunc("GET /install/novel-bookmark.user.js", h.requireSession(h.installUserscript("novel-bookmark.user.js")))
 	mux.HandleFunc("POST /rotate-token", h.requireSession(h.rotateToken))
-
-	// Owner-only: the one place the UI crosses the Reader boundary.
-	mux.HandleFunc("POST /readers/{id}/revoke", h.requireSession(h.revokeReaderSessions))
+	// Owner-only: every route that reaches past the acting Reader is gated in
+	// one place, so a missing gate is visible in the route list.
+	for _, rt := range h.adminRoutes() {
+		mux.HandleFunc(rt.pattern, h.requireOwner(rt.handler))
+	}
 }
 
 // staticHandler serves the embedded assets. An hour, not longer: assets are
@@ -240,14 +244,9 @@ func (h *Handler) index(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "internal error", http.StatusInternalServerError)
 		return
 	}
-	if readerID == h.store.OwnerID() {
-		view.Owner, view.OwnerID = true, readerID
-		if view.Readers, err = h.store.Readers(); err != nil {
-			log.Printf("index readers: %v", err)
-			http.Error(w, "internal error", http.StatusInternalServerError)
-			return
-		}
-	}
+	// The owner's page differs only by the link to the administrative page:
+	// the roster lives there now, so the page read every day is only reading.
+	view.Owner = readerID == h.store.OwnerID()
 	h.render(w, http.StatusOK, "app", view)
 }
 
@@ -618,40 +617,3 @@ func (h *Handler) rotateToken(w http.ResponseWriter, r *http.Request) {
 	view := listView{Lib: store.KindManga, Rotated: true}
 	h.render(w, http.StatusOK, "setup", view)
 }
-
-// revokeReaderSessions logs one Reader out of every browser they are signed
-// in on. Owner-only: it reaches across the Reader boundary every other handler
-// respects, so the guard is a comparison against the seeded owner rather than
-// a role a Reader could acquire. A non-owner gets 404 — the panel does not
-// exist for them, so neither should the endpoint.
-func (h *Handler) revokeReaderSessions(w http.ResponseWriter, r *http.Request) {
-	if readerOf(r) != h.store.OwnerID() {
-		http.NotFound(w, r)
-		return
-	}
-	target, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
-	if err != nil {
-		http.Error(w, "bad reader id", http.StatusBadRequest)
-		return
-	}
-	// The owner is not one of the Readers this endpoint reaches: revoking
-	// themselves would sign out the browser making the request, which is what
-	// logout is for. The roster hides the button; this refuses the hand-rolled
-	// POST behind it.
-	if target == h.store.OwnerID() {
-		http.NotFound(w, r)
-		return
-	}
-	if err := h.store.DeleteReaderSessions(target); err != nil {
-		log.Printf("revoke sessions: %v", err)
-		http.Error(w, "internal error", http.StatusInternalServerError)
-		return
-	}
-	readers, err := h.store.Readers()
-	if err != nil {
-		log.Printf("revoke sessions: %v", err)
-		http.Error(w, "internal error", http.StatusInternalServerError)
-		return
-	}
-	h.render(w, http.StatusOK, "readers", listView{Owner: true, Readers: readers, OwnerID: h.store.OwnerID()})
-}

backend/main.go

@@ -129,7 +129,10 @@ func loadConfig() Config {
 // newRouter wires routes and middleware. CORS is the outermost layer so
 // preflight OPTIONS short-circuits before auth; /bookmarks* is auth-protected,
 // /healthz is public.
-func newRouter(s *store.Store, cfg Config) http.Handler {
+//
+// lanes may be nil — polling disabled, or its client could not be built. The
+// admin page reports that rather than pretending Lanes exist.
+func newRouter(s *store.Store, cfg Config, lanes web.LaneReporter) http.Handler {
 	mux := http.NewServeMux()
 	h := &api.Handler{Store: s}
 	mux.HandleFunc("GET /healthz", api.Healthz)
@@ -160,7 +163,7 @@ func newRouter(s *store.Store, cfg Config) http.Handler {
 	// The browser UI is always registered; signing in is Discord OAuth, so
 	// there is no password to forget and no gate to leave unset.
 	wh, err := web.New(s, cfg.Discord, []byte(cfg.TokenKey),
-		cfg.UserscriptPath, cfg.NovelUserscriptPath)
+		cfg.UserscriptPath, cfg.NovelUserscriptPath, lanes)
 	if err != nil {
 		log.Fatalf("web handler: %v", err)
 	}
@@ -275,11 +278,17 @@ func main() {
 		}
 		s.OnSeriesCreated = acq.Acquire
 	}
-	startLatestPoller(pollCtx, s, cfg.LatestPoll, browser)
+	// A nil *Poller must not become a non-nil interface holding a nil pointer:
+	// the admin page tests the reporter for nil to decide whether anything is
+	// polling at all.
+	var lanes web.LaneReporter
+	if poller := startLatestPoller(pollCtx, s, cfg.LatestPoll, browser); poller != nil {
+		lanes = poller
+	}
 
 	srv := &http.Server{
 		Addr:              ":" + cfg.Port,
-		Handler:           newRouter(s, cfg),
+		Handler:           newRouter(s, cfg, lanes),
 		ReadHeaderTimeout: 10 * time.Second,
 	}
 
@@ -326,16 +335,17 @@ func newLatestPoller(s *store.Store, cfg LatestPoll, fetch, browser latest.Fetch
 // startLatestPoller launches the background poller unless it is disabled or its
 // HTTP client cannot be built. Any problem here is logged and skipped: this
 // feature going missing degrades the service to userscript-only latest-chapter
-// tracking, which is exactly how it behaved before.
-func startLatestPoller(ctx context.Context, s *store.Store, cfg LatestPoll, browser latest.Fetcher) {
+// tracking, which is exactly how it behaved before. It returns the running
+// Poller, or nil when there is none — the admin page's Lane status reads it.
+func startLatestPoller(ctx context.Context, s *store.Store, cfg LatestPoll, browser latest.Fetcher) *latest.Poller {
 	if !cfg.Enabled {
 		log.Println("latest-chapter poller: disabled by config")
-		return
+		return nil
 	}
 	f, err := latest.NewTLSFetcher()
 	if err != nil {
 		log.Printf("latest-chapter poller: disabled, cannot build client: %v", err)
-		return
+		return nil
 	}
 	// Nil browser: sites behind a JavaScript challenge are simply not polled,
 	// and their latest_chapter comes from the userscript alone — which is how
@@ -343,4 +353,5 @@ func startLatestPoller(ctx context.Context, s *store.Store, cfg LatestPoll, brow
 	p := newLatestPoller(s, cfg, f, browser)
 
 	go p.Run(ctx)
+	return p
 }

backend/reader_credential_test.go

@@ -49,7 +49,7 @@ func withBody(req *http.Request, body string) *http.Request {
 // A refused credential is refused however plausible it looks: only a hash the
 // readers table holds authenticates anything.
 func TestUnknownCredentialRejected(t *testing.T) {
-	srv := newRouter(newTestStore(t), testConfig())
+	srv := newRouter(newTestStore(t), testConfig(), nil)
 
 	rr := httptest.NewRecorder()
 	srv.ServeHTTP(rr, credRequest(http.MethodGet, "/bookmarks", readerCredential("never-registered")))
@@ -69,7 +69,7 @@ func TestUnknownCredentialRejected(t *testing.T) {
 func TestPerReaderIsolation(t *testing.T) {
 	s := newTestStore(t)
 	registerReader(t, s, "other-reader")
-	srv := newRouter(s, testConfig())
+	srv := newRouter(s, testConfig(), nil)
 
 	ownerKey := "asura:solo"
 	putBookmark(t, srv, ownerKey, store.Bookmark{
@@ -267,7 +267,7 @@ func TestRotateCredentialViaWebUI(t *testing.T) {
 	}
 	cfg := testConfig()
 	cfg.UserscriptPath = path
-	srv := newRouter(s, cfg)
+	srv := newRouter(s, cfg, nil)
 
 	oldCred := ownerCredential()
 	rr := httptest.NewRecorder()

backend/web_test.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"database/sql"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -15,6 +16,7 @@ import (
 	"testing"
 	"time"
 
+	"bookmarkmanager/backend/internal/latest"
 	"bookmarkmanager/backend/internal/session"
 	"bookmarkmanager/backend/internal/store"
 	"bookmarkmanager/backend/internal/web"
@@ -26,11 +28,17 @@ import (
 const testOwnerID = "owner-snowflake"
 
 // newWebTestServer returns the full router plus the store behind it, so tests
-// can seed rows and assert on what the handlers wrote back.
-func newWebTestServer(t *testing.T, cfg Config) (http.Handler, *store.Store) {
+// can seed rows and assert on what the handlers wrote back. An optional lane
+// reporter stands in for the running poller; omitted means none is running,
+// which is what every test that is not about the admin page wants.
+func newWebTestServer(t *testing.T, cfg Config, lanes ...web.LaneReporter) (http.Handler, *store.Store) {
 	t.Helper()
 	st := newTestStore(t)
-	return newRouter(st, cfg), st
+	var reporter web.LaneReporter
+	if len(lanes) > 0 {
+		reporter = lanes[0]
+	}
+	return newRouter(st, cfg, reporter), st
 }
 
 // sessionCookie mints a live session row for the owner and returns the cookie
@@ -141,12 +149,12 @@ func discordConfig(stubURL string) web.DiscordConfig {
 
 // oauthWebTestServer returns the full router, its store, and a Discord stub
 // wired as the configured API — the starting point for sign-in tests.
-func oauthWebTestServer(t *testing.T) (http.Handler, *store.Store, *discordStub) {
+func oauthWebTestServer(t *testing.T, lanes ...web.LaneReporter) (http.Handler, *store.Store, *discordStub) {
 	t.Helper()
 	stub, srv := newDiscordStub(t)
 	cfg := testConfig()
 	cfg.Discord = discordConfig(srv.URL)
-	router, st := newWebTestServer(t, cfg)
+	router, st := newWebTestServer(t, cfg, lanes...)
 	return router, st, stub
 }
 
@@ -410,7 +418,7 @@ func TestDiscordLoginRefusesNonMember(t *testing.T) {
 			cfg.Discord = discordConfig(srv.URL)
 			cfg.Discord.RequiredRole = tc.require
 			st := newTestStore(t)
-			router := newRouter(st, cfg)
+			router := newRouter(st, cfg, nil)
 
 			rr := completeSignIn(t, router, startSignIn(t, router))
 			if rr.Code != http.StatusForbidden {
@@ -626,24 +634,52 @@ func TestOwnerRevokesAnotherReadersSessions(t *testing.T) {
 	}
 }
 
-// The owner's own page carries the roster; nobody else's does.
-func TestOwnerSeesReadersPanel(t *testing.T) {
+// fakeLanes is the admin page's poller stand-in: one fixed snapshot, so the
+// page's tests need neither a poller nor a Site.
+type fakeLanes struct{ status latest.Status }
+
+func (f fakeLanes) LaneStatus() latest.Status { return f.status }
+
+// The roster moved off the reading page onto its own address: the owner gets a
+// link, everyone else gets nothing, and the page itself lists every Reader with
+// the counters and the two controls.
+func TestAdminPageCarriesRosterAndOwnerLink(t *testing.T) {
 	router, st, _ := oauthWebTestServer(t)
-	signInCookie(t, router)
+	theirCookie := signInCookie(t, router)
+	ownerCookie := sessionCookie(t, st)
 
 	req := httptest.NewRequest(http.MethodGet, "/", nil)
-	req.AddCookie(sessionCookie(t, st))
+	req.AddCookie(ownerCookie)
 	rr := httptest.NewRecorder()
 	router.ServeHTTP(rr, req)
 	body := rr.Body.String()
-	if !strings.Contains(body, `id="readers"`) {
-		t.Fatal("the owner's page lacks the Readers panel")
+	if strings.Contains(body, `id="readers"`) {
+		t.Error("the reading page still carries the roster; it belongs on /admin")
 	}
-	if !strings.Contains(body, testOwnerID) {
-		t.Fatalf("the roster does not list the registered Reader:\n%s", body)
+	if !strings.Contains(body, `href="/admin"`) {
+		t.Error("the owner's reading page offers no link to the admin page")
 	}
-	if !strings.Contains(body, "Revoke sessions") {
-		t.Fatal("the roster offers no revocation control for a signed-in Reader")
+
+	req = httptest.NewRequest(http.MethodGet, "/", nil)
+	req.AddCookie(theirCookie)
+	rr = httptest.NewRecorder()
+	router.ServeHTTP(rr, req)
+	if strings.Contains(rr.Body.String(), `href="/admin"`) {
+		t.Error("a non-owner was offered the admin link")
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/admin", nil)
+	req.AddCookie(ownerCookie)
+	rr = httptest.NewRecorder()
+	router.ServeHTTP(rr, req)
+	if rr.Code != http.StatusOK {
+		t.Fatalf("GET /admin status = %d, want 200", rr.Code)
+	}
+	body = rr.Body.String()
+	for _, want := range []string{`id="readers"`, testOwnerID, "Revoke sessions", "Clear marks", "confirmed"} {
+		if !strings.Contains(body, want) {
+			t.Errorf("admin page lacks %q:\n%s", want, body)
+		}
 	}
 	// Exactly one revocable row: the other Reader's. The owner's own row carries
 	// the same session count and no button.
@@ -652,6 +688,200 @@ func TestOwnerSeesReadersPanel(t *testing.T) {
 	}
 }
 
+// Every administrative route is gated the same way, so the test walks the list
+// the router registers rather than naming routes by hand: no session is 401,
+// a signed-in non-owner is 404, and the address is not confirmed to either.
+func TestAdminRoutesAreOwnerOnly(t *testing.T) {
+	router, st, _ := oauthWebTestServer(t)
+	theirCookie := signInCookie(t, router)
+	ownerCookie := sessionCookie(t, st)
+	target := strconv.FormatInt(st.OwnerID(), 10)
+
+	patterns := web.AdminPatterns()
+	if len(patterns) == 0 {
+		t.Fatal("no administrative routes to test")
+	}
+	for _, pattern := range patterns {
+		method, path, ok := strings.Cut(pattern, " ")
+		if !ok {
+			t.Fatalf("route pattern %q has no method", pattern)
+		}
+		path = strings.Replace(path, "{id}", target, 1)
+
+		for _, tc := range []struct {
+			name   string
+			cookie *http.Cookie
+			want   int
+		}{
+			{"no session", nil, http.StatusUnauthorized},
+			{"non-owner", theirCookie, http.StatusNotFound},
+		} {
+			req := httptest.NewRequest(method, path, nil)
+			if tc.cookie != nil {
+				req.AddCookie(tc.cookie)
+			}
+			rr := httptest.NewRecorder()
+			router.ServeHTTP(rr, req)
+			if rr.Code != tc.want {
+				t.Errorf("%s %s as %s: status = %d, want %d", method, path, tc.name, rr.Code, tc.want)
+			}
+		}
+
+		req := httptest.NewRequest(method, path, nil)
+		req.AddCookie(ownerCookie)
+		rr := httptest.NewRecorder()
+		router.ServeHTTP(rr, req)
+		if rr.Code == http.StatusUnauthorized {
+			t.Errorf("%s %s as the owner: status = 401, the gate rejects the owner", method, path)
+		}
+	}
+}
+
+// The Lane block reports what the poller says, and marks the Lanes that need
+// attention — a clamped gap, a refusal, a Site whose pages can only be read
+// through a sidecar that is not there, and a Lane with Series waiting that its
+// last pass did not read.
+func TestAdminPageShowsLaneStatus(t *testing.T) {
+	lanes := fakeLanes{latest.Status{
+		Lanes: []latest.LaneState{
+			{Site: "asura", Due: 12, Checked: 12, LastRun: time.Now().Add(-90 * time.Second), Gap: 40 * time.Second},
+			{Site: "kagane", Due: 3, Checked: 3, LastRun: time.Now().Add(-time.Minute), Gap: time.Minute, Browser: true},
+			{Site: "demonic", Due: 400, Checked: 400, LastRun: time.Now(), Gap: 8 * time.Second, Clamped: true},
+			{Site: "comix", Due: 7, LastRun: time.Now(), Gap: time.Minute, Browser: true},
+		},
+		BrowserConfigured: true,
+		BrowserReachable:  true,
+	}}
+	router, st, _ := oauthWebTestServer(t, lanes)
+
+	req := httptest.NewRequest(http.MethodGet, "/ui/admin/lanes", nil)
+	req.AddCookie(sessionCookie(t, st))
+	rr := httptest.NewRecorder()
+	router.ServeHTTP(rr, req)
+	if rr.Code != http.StatusOK {
+		t.Fatalf("GET /ui/admin/lanes status = %d, want 200", rr.Code)
+	}
+	body := rr.Body.String()
+	for _, want := range []string{"asura", "kagane", "12 due", "12 checked", "gap 40s", "ran 1m30s ago", "gap at floor", "not checking", "reachable"} {
+		if !strings.Contains(body, want) {
+			t.Errorf("lane status lacks %q:\n%s", want, body)
+		}
+	}
+	// Nothing is refusing and the sidecar is up, so neither mark may appear:
+	// a mark the owner cannot act on is worse than none.
+	for _, unwanted := range []string{"refusing", "no browser"} {
+		if strings.Contains(body, unwanted) {
+			t.Errorf("lane status marks %q on a healthy run:\n%s", unwanted, body)
+		}
+	}
+}
+
+// A Lane whose pass never reached a figure must not have that figure drawn as
+// a zero: a refusing Lane still reports the due count and gap its last real
+// pass saw, and a Lane that has never reached one omits it entirely.
+func TestLaneStatusOmitsUnknownGap(t *testing.T) {
+	lanes := fakeLanes{latest.Status{
+		Lanes:             []latest.LaneState{{Site: "comix", LastRun: time.Now(), Refusing: true, Browser: true}},
+		BrowserConfigured: true,
+		BrowserReachable:  true,
+	}}
+	router, st, _ := oauthWebTestServer(t, lanes)
+
+	req := httptest.NewRequest(http.MethodGet, "/ui/admin/lanes", nil)
+	req.AddCookie(sessionCookie(t, st))
+	rr := httptest.NewRecorder()
+	router.ServeHTTP(rr, req)
+	body := rr.Body.String()
+	if strings.Contains(body, "gap 0s") {
+		t.Errorf("a Lane with no pace yet states a zero gap:\n%s", body)
+	}
+	if !strings.Contains(body, "refusing") {
+		t.Errorf("a refusing Lane is not marked as such:\n%s", body)
+	}
+}
+
+// No poller and a poller that has not finished a pass both render "no data
+// yet" rather than zeroes that read as a stopped backend — but they are not
+// the same fact, so the page must not blame the sidecar when nothing polls.
+func TestAdminPageWithoutAPollerSaysSo(t *testing.T) {
+	for _, tc := range []struct {
+		name         string
+		lanes        []web.LaneReporter
+		want, unwant string
+	}{
+		{"no poller", nil, "Polling is switched off", "not configured"},
+		{"poller, no pass yet", []web.LaneReporter{fakeLanes{}}, "not configured", "Polling is switched off"},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			router, st, _ := oauthWebTestServer(t, tc.lanes...)
+			req := httptest.NewRequest(http.MethodGet, "/admin", nil)
+			req.AddCookie(sessionCookie(t, st))
+			rr := httptest.NewRecorder()
+			router.ServeHTTP(rr, req)
+			body := rr.Body.String()
+			if !strings.Contains(body, "No data yet") {
+				t.Errorf("admin page with no Lane data does not say so:\n%s", body)
+			}
+			if !strings.Contains(body, tc.want) {
+				t.Errorf("admin page lacks %q:\n%s", tc.want, body)
+			}
+			if strings.Contains(body, tc.unwant) {
+				t.Errorf("admin page states %q, which is not what is wrong:\n%s", tc.unwant, body)
+			}
+		})
+	}
+}
+
+// A Reader past the disagreement threshold is rendered as blocked, and
+// clearing their marks both zeroes the counters and lifts the block in the
+// roster the response carries back.
+func TestOwnerClearsReaderMarks(t *testing.T) {
+	st, dsn := newTestStoreURL(t)
+	router := newRouter(st, testConfig(), nil)
+	cookie := sessionCookie(t, st)
+	// The counters are filled by issue #103; until it lands the only way to
+	// stand a marked Reader up is to write the columns directly.
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatalf("open %s: %v", dsn, err)
+	}
+	defer db.Close()
+	if _, err := db.Exec(`UPDATE readers SET sighting_agreements = 4, sighting_disagreements = 3 WHERE id = $1`, st.OwnerID()); err != nil {
+		t.Fatalf("mark reader: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodGet, "/admin", nil)
+	req.AddCookie(cookie)
+	rr := httptest.NewRecorder()
+	router.ServeHTTP(rr, req)
+	body := rr.Body.String()
+	if !strings.Contains(body, "4 confirmed / 3 contradicted") {
+		t.Errorf("roster does not report the Reader's marks:\n%s", body)
+	}
+	if !strings.Contains(body, "deferral blocked") {
+		t.Errorf("a Reader at the threshold is not rendered as blocked:\n%s", body)
+	}
+
+	req = httptest.NewRequest(http.MethodPost,
+		"/readers/"+strconv.FormatInt(st.OwnerID(), 10)+"/clear-marks", nil)
+	req.AddCookie(cookie)
+	rr = httptest.NewRecorder()
+	router.ServeHTTP(rr, req)
+	if rr.Code != http.StatusOK {
+		t.Fatalf("clear marks: status = %d, want 200 (body %s)", rr.Code, rr.Body.String())
+	}
+	body = rr.Body.String()
+	if !strings.Contains(body, `id="readers"`) {
+		t.Fatalf("clear marks did not re-render the roster:\n%s", body)
+	}
+	if !strings.Contains(body, "0 confirmed / 0 contradicted") {
+		t.Errorf("roster does not report the cleared counters:\n%s", body)
+	}
+	if strings.Contains(body, "deferral blocked") {
+		t.Errorf("a cleared Reader is still marked blocked:\n%s", body)
+	}
+}
+
 func TestDiscordLoginTokenEndpointDown(t *testing.T) {
 	stub, srv := newDiscordStub(t)
 	stub.tokenStatus = http.StatusInternalServerError

docs/design-system.md

@@ -10,7 +10,7 @@ Implemented in:
 
 | Surface | Files |
 | --- | --- |
-| Web UI (login, list, card, empty, errors) | `backend/internal/web/static/style.css`, `backend/internal/web/templates/{app,card,list,login,chrome,icons}.html`, `backend/internal/web/static/filter.js` |
+| Web UI (login, list, card, empty, errors, admin) | `backend/internal/web/static/style.css`, `backend/internal/web/templates/{app,admin,lanes,readers,card,list,login,chrome,icons}.html`, `backend/internal/web/static/filter.js` |
 | Userscript panel (Shadow DOM) | `userscript/manga-bookmark.user.js` — `TEMPLATE` and `CSS` at the bottom of the IIFE |
 
 ## 1. The one idea
@@ -73,6 +73,7 @@ Defined once in `backend/internal/web/static/style.css` `:root`, mirrored in the
 | `--moss` | `#7fae86` | `#3d6c46` | finished accent |
 | `--clay` | `#b5906f` | `#7c5533` | set-chapter accent |
 | `--trash` | `#977671` | `#8c6558` | remove, at rest — icons need 3:1, not 4.5:1 |
+| `--patina` | `#5fb3a6` | `#1f6f66` | admin page only — a Poll Lane needing attention, a Reader whose reports are blocked |
 | `--play-hot-line` | `#3a1d18` | `#f0cfc6` | desktop cell border, play when `.is-new` |
 | `--fav-line` | `#332b14` | `#e3d3a4` | desktop cell border, favourite when on |
 | `--asura` | `#7d93a5` | `#4f6b80` | site tag |
@@ -81,9 +82,13 @@ Defined once in `backend/internal/web/static/style.css` `:root`, mirrored in the
 | `--kagane` | `#9a8aa5` | `#6f5f7d` | site tag |
 | `--hatch` / `--hatch-dim` | 135° 5px stripe | paper stripe | missing-cover slot |
 
-`--slate`/`--moss`/`--clay`/`--brass` are held at the same weight deliberately:
-one accent per action, so a press says which lane it belongs to, with none of
-them competing with ember. Dark is the default (`color-scheme: dark light`);
+`--slate`/`--moss`/`--clay`/`--brass`/`--patina` are held at the same weight
+deliberately: one accent per meaning, so a press says which lane it belongs to,
+with none of them competing with ember. `--patina` is the admin page's only
+colour — a cool verdigris, the far side of the wheel from ember's crimson and
+clear of the archive blue: system health is neither a new chapter nor
+destruction, so it borrows neither `--ember` nor `--danger`.
+Dark is the default (`color-scheme: dark light`);
 light is a `@media (prefers-color-scheme: light)` override of the same names.
 **Any new colour must be added in both branches** — light is not a filter over
 dark, the hues are re-tuned.
@@ -140,6 +145,14 @@ Recurring specs (copy these rather than inventing sizes):
   main#list      article.card …  |  .empty
 ```
 
+The owner's admin page (`admin.html`) is the same sheet with two sections in
+place of the list — `.lanes` (Poll Lane rows) and `.readers` (the roster) —
+and no library switch: it belongs to neither library, so its topbar carries a
+plain `.ghost.back` link home. Both sections are eyebrow + hairline-separated
+rows, the shape the roster already had as a fold-out. `.lanes` refreshes itself
+every 30s via `hx-get="/ui/admin/lanes"` with `hx-swap="outerHTML"`; the roster
+re-renders only in answer to an action.
+
 **Brand mark**: an inline `<svg class="mark">` (`viewBox="0 0 200 172"`),
 defined once in `chrome.html`'s `mark` template and reused by `app.html` and
 `login.html` so it takes the page's `--ink`/`currentColor`/`--ember` rather

graphify-out/.graphify_labels.json

@@ -151,6 +151,7 @@
   "150": "Reviewer Subagent (opencode)",
   "151": "Finding Severity Rubric",
   "152": "Spec Compliance Review",
+  "156": "ResponseWriter",
   "161": "Why Use samber/oops",
   "162": "singleflight Cache Stampede Prevention",
   "163": "Struct Field Alignment",
@@ -205,10 +206,6 @@
   "245": "wayfinder map/ticket mechanism",
   "246": "Triage labels: canonical roles to tracker labels",
   "247": "Canonical triage role labels (needs-triage ... wontfix)",
-  "248": "Cinder (BookmarkManager Web UI design system)",
-  "249": "Heat is typographic: ember reserved for unread chapters",
-  "250": "Design tokens (dark + light branches, no hardcoded hex)",
-  "251": "Three type roles: display serif / mono small-caps / sans",
   "252": "a[aria-label='All Chapter'] priority pointer",
   "253": "Research: lightnovelworld chapter slug vs series slug",
   "254": "Gitea issue #77 (chapter vs series slug)",

graphify-out/GRAPH_REPORT.md

@@ -1,16 +1,16 @@
 # Graph Report - mangaBookmark  (2026-08-16)
 
 ## Corpus Check
-- 113 files · ~279,161 words
+- 116 files · ~284,419 words
 - Verdict: corpus is large enough that graph structure adds value.
 
 ## Summary
-- 1668 nodes · 3379 edges · 222 communities (68 shown, 154 thin omitted)
-- Extraction: 91% EXTRACTED · 9% INFERRED · 0% AMBIGUOUS · INFERRED: 320 edges (avg confidence: 0.77)
+- 1701 nodes · 3463 edges · 219 communities (69 shown, 150 thin omitted)
+- Extraction: 91% EXTRACTED · 9% INFERRED · 0% AMBIGUOUS · INFERRED: 326 edges (avg confidence: 0.77)
 - Token cost: 0 input · 0 output
 
 ## Graph Freshness
-- Built from commit: `4f1cbcfd`
+- Built from commit: `58014eb8`
 - Run `git rev-parse HEAD` and compare to check if the graph is stale.
 - Run `graphify update .` after code changes (no API cost).
 
@@ -45,8 +45,8 @@
 - [[_COMMUNITY_Find Skills Guide|Find Skills Guide]]
 - [[_COMMUNITY_Allocation Patterns|Allocation Patterns]]
 - [[_COMMUNITY_Observability & Alerting|Observability & Alerting]]
+- [[_COMMUNITY_AGENTS|AGENTS.md]]
 - [[_COMMUNITY_Store|Store]]
-- [[_COMMUNITY_Open|Open]]
 - [[_COMMUNITY_Go Testing Guide|Go Testing Guide]]
 - [[_COMMUNITY_Session Store|Session Store]]
 - [[_COMMUNITY_Web UI Filter Logic|Web UI Filter Logic]]
@@ -166,6 +166,7 @@
 - [[_COMMUNITY_Reviewer Subagent (opencode)|Reviewer Subagent (opencode)]]
 - [[_COMMUNITY_Finding Severity Rubric|Finding Severity Rubric]]
 - [[_COMMUNITY_Spec Compliance Review|Spec Compliance Review]]
+- [[_COMMUNITY_ResponseWriter|ResponseWriter]]
 - [[_COMMUNITY_Why Use samberoops|Why Use samber/oops]]
 - [[_COMMUNITY_singleflight Cache Stampede Prevention|singleflight Cache Stampede Prevention]]
 - [[_COMMUNITY_Struct Field Alignment|Struct Field Alignment]]
@@ -220,10 +221,6 @@
 - [[_COMMUNITY_wayfinder mapticket mechanism|wayfinder map/ticket mechanism]]
 - [[_COMMUNITY_Triage labels canonical roles to tracker labels|Triage labels: canonical roles to tracker labels]]
 - [[_COMMUNITY_Canonical triage role labels (needs-triage ... wontfix)|Canonical triage role labels (needs-triage ... wontfix)]]
-- [[_COMMUNITY_Cinder (BookmarkManager Web UI design system)|Cinder (BookmarkManager Web UI design system)]]
-- [[_COMMUNITY_Heat is typographic ember reserved for unread chapters|Heat is typographic: ember reserved for unread chapters]]
-- [[_COMMUNITY_Design tokens (dark + light branches, no hardcoded hex)|Design tokens (dark + light branches, no hardcoded hex)]]
-- [[_COMMUNITY_Three type roles display serif  mono small-caps  sans|Three type roles: display serif / mono small-caps / sans]]
 - [[_COMMUNITY_aaria-label='All Chapter' priority pointer|a[aria-label='All Chapter'] priority pointer]]
 - [[_COMMUNITY_Research lightnovelworld chapter slug vs series slug|Research: lightnovelworld chapter slug vs series slug]]
 - [[_COMMUNITY_Gitea issue 77 (chapter vs series slug)|Gitea issue #77 (chapter vs series slug)]]
@@ -238,16 +235,16 @@
 - [[_COMMUNITY_Userscript CLAUDE guidance|Userscript CLAUDE guidance]]
 
 ## God Nodes (most connected - your core abstractions)
-1. `testConfig()` - 53 edges
-2. `newWebTestServer()` - 49 edges
-3. `newTestStore()` - 48 edges
-4. `newTestStore()` - 43 edges
+1. `testConfig()` - 54 edges
+2. `newTestStore()` - 49 edges
+3. `newWebTestServer()` - 49 edges
+4. `newTestStore()` - 44 edges
 5. `e()` - 33 edges
-6. `Open()` - 29 edges
+6. `Open()` - 30 edges
 7. `Handler` - 29 edges
-8. `ne()` - 28 edges
-9. `De()` - 28 edges
-10. `Store` - 27 edges
+8. `Store` - 28 edges
+9. `ne()` - 28 edges
+10. `De()` - 28 edges
 
 ## Surprising Connections (you probably didn't know these)
 - `el()` --indirect_call--> `c()`  [INFERRED]
@@ -267,21 +264,19 @@
 ## Hyperedges (group relationships)
 - **Batch Ticket Implementation Pipeline** — _claude_skills_implement_tickets_skill_implement_tickets, _omp_agents_ticket_implementer_ticket_implementer, _omp_agents_ticket_implementer_cr_spec, _omp_agents_ticket_implementer_cr_standards [INFERRED 0.85]
 - **Subagent-Driven Development Pipeline** — _opencode_agent_implementer_implementer, _opencode_agent_reviewer_reviewer, _opencode_agent_implementer_subagent_driven_development [INFERRED 0.85]
-- **Go HTML Template Family** — backend_internal_web_templates_app_doc, backend_internal_web_templates_card_doc, backend_internal_web_templates_list_doc, backend_internal_web_templates_chrome_doc, backend_internal_web_templates_login_doc, backend_internal_web_templates_setup_doc, backend_internal_web_templates_readers_doc, backend_internal_web_templates_icons_doc [INFERRED 0.95]
-- **htmx Fragment Swap Flow** — backend_internal_web_templates_app_doc, backend_internal_web_templates_card_doc, backend_internal_web_templates_chrome_doc, backend_internal_web_templates_setup_doc, backend_internal_web_templates_readers_doc [INFERRED 0.95]
 - **Backend owns the truth (single-writer ownership of shared facts)** — docs_adr_0003_series_shared_and_poll_owned_poll_owned_writes, docs_adr_0004_wire_format_does_not_mirror_the_schema_flat_wire_contract, docs_adr_0007_backend_hosts_cover_bytes_server_side_covers [INFERRED 0.85]
 - **Headless browser infrastructure (sidecar, on-demand, home deployment)** — docs_adr_0005_on_demand_browser_headless_shell, docs_adr_0005_on_demand_browser_cdp, docs_adr_0005_on_demand_browser_on_demand_start, docs_adr_0006_browser_on_the_home_machine_home_machine_rationale [INFERRED 0.85]
 - **lightnovelworld series-identity investigation and fix** — docs_research_lightnovelworld_chapter_vs_series_slug_issue_77, docs_research_lightnovelworld_chapter_vs_series_slug_unscoped_regex, docs_adr_0008_series_identity_is_discovered_not_derived_discovered_identity [INFERRED 0.85]
 
-## Communities (222 total, 154 thin omitted)
+## Communities (219 total, 150 thin omitted)
 
 ### Community 0 - "HTMX Library Internals"
 Cohesion: 0.08
 Nodes (101): A(), ae(), an(), at(), B(), be(), bn(), bt() (+93 more)
 
 ### Community 1 - "Cover Fetch Test Helpers"
-Cohesion: 0.10
-Nodes (84): floatPtr(), testConfig(), getCover(), Cookie, Handler, ResponseRecorder, T, TestListRendersAcquiredCover() (+76 more)
+Cohesion: 0.09
+Nodes (89): floatPtr(), testConfig(), getCover(), Cookie, Handler, ResponseRecorder, T, TestListRendersAcquiredCover() (+81 more)
 
 ### Community 2 - "Manga Userscript Adapters"
 Cohesion: 0.06
@@ -296,16 +291,16 @@ Cohesion: 0.08
 Nodes (78): bookmarkNewKaganeSeries(), bookmarkNewNovelfullSeries(), bookmarkNewSeries(), Context, Store, T, newAcquirer(), readBookmark() (+70 more)
 
 ### Community 5 - "Bookmarks API Tests"
-Cohesion: 0.06
-Nodes (74): auth(), getBookmarks(), Handler, Request, Store, T, newTestServer(), newTestStore() (+66 more)
+Cohesion: 0.07
+Nodes (70): auth(), getBookmarks(), Handler, Request, Store, T, newTestServer(), newTestStore() (+62 more)
 
 ### Community 7 - "Cover & Acquire Internals"
-Cohesion: 0.08
-Nodes (37): Addr, Context, Store, WaitGroup, isInterstitial(), defaultCoverResolver(), fetchCoverBytes(), Client (+29 more)
+Cohesion: 0.07
+Nodes (43): Addr, fakeLanes, Context, Store, WaitGroup, defaultCoverResolver(), fetchCoverBytes(), Client (+35 more)
 
 ### Community 8 - "System Architecture Concepts"
-Cohesion: 0.13
-Nodes (20): app.html — App Shell Template, Manga/Novel Library Switch, Bookmark Bucket Tabs, Confirm Row (Archive/Finish/Remove), card.html — Series Card Template, htmx /ui/* Mutation Endpoints, chrome.html — Out-of-Band Regions, Action Key (+12 more)
+Cohesion: 0.15
+Nodes (15): Confirm Row (Archive/Finish/Remove), card.html — Series Card Template, htmx /ui/* Mutation Endpoints, chrome.html — Out-of-Band Regions, Action Key, Brand Mark SVG, Continue Reading Strip, icons.html — Icon Sprite Template (+7 more)
 
 ### Community 9 - "Session Middleware"
 Cohesion: 0.08
@@ -317,7 +312,7 @@ Nodes (39): Test Helpers, Test Timeout, Basic Handler Test, HTTP Handler Testing
 
 ### Community 11 - "Store Tests"
 Cohesion: 0.14
-Nodes (45): scanSeries(), Store, T, newTestStore(), readLatestCheckedAt(), readSeries(), secondReader(), seedForCheck() (+37 more)
+Nodes (45): Store, T, newTestStore(), readLatestCheckedAt(), readSeries(), secondReader(), seedForCheck(), seedSecondReader() (+37 more)
 
 ### Community 12 - "Bookmarks API Handler"
 Cohesion: 0.08
@@ -332,8 +327,8 @@ Cohesion: 0.06
 Nodes (33): Creating Errors, Custom Error Types, Custom types that wrap other errors, Decision table: which error strategy to use, Error Creation, Error String Conventions, Errors as Values, `errors.New` — static error messages (+25 more)
 
 ### Community 15 - "CDP Browser Client"
-Cohesion: 0.06
-Nodes (56): awaitPromise(), browserConnectionLost(), classifyBrowserError(), comixRead(), comixSeriesPageURL(), Action, Context, Mutex (+48 more)
+Cohesion: 0.20
+Nodes (17): applyMigration(), migrate(), Open(), refreshOwnerToken(), seedOwner(), TestCoverIsContentAddressedOnFilesystem(), TestCoverPersistsAcrossReopen(), TestMigration0002BackfillsExistingBookmarks() (+9 more)
 
 ### Community 16 - "Cloudflare bot scoring and poll cadence — what is actually documented"
 Cohesion: 0.06
@@ -372,8 +367,8 @@ Cohesion: 0.33
 Nodes (12): coverResponse(), Request, T, TestCoverFetcherCanonicalisesJpgAlias(), TestCoverFetcherFetchesPublicHTTPSImage(), TestCoverFetcherRefusesUnsafeDestinationsBeforeRequest(), TestCoverFetcherRejectsNonImage(), TestCoverFetcherRejectsOversizedBody() (+4 more)
 
 ### Community 26 - "Open"
-Cohesion: 0.40
-Nodes (5): Map of pointers for large, frequently updated structs, Memory Layout, Pointer receivers for large structs, Struct field alignment, Zero-size field at end of struct
+Cohesion: 0.05
+Nodes (62): awaitPromise(), browserConnectionLost(), classifyBrowserError(), comixRead(), comixSeriesPageURL(), Action, Context, Mutex (+54 more)
 
 ### Community 27 - "Find Skills Guide"
 Cohesion: 0.14
@@ -387,13 +382,13 @@ Nodes (14): Allocation Patterns, Backing Array Leaks, Direct indexing vs append,
 Cohesion: 0.22
 Nodes (9): Alerting rules (examples), CPU saturation, GC pressure, Goroutine leaks, Grafana Dashboards, Memory leaks, Prometheus Metrics for Go, PromQL Queries for Performance Diagnosis (+1 more)
 
-### Community 31 - "Store"
-Cohesion: 0.12
-Nodes (3): coverRelativePath(), coverSourceAddress(), Store
+### Community 30 - "AGENTS.md"
+Cohesion: 0.40
+Nodes (5): Map of pointers for large, frequently updated structs, Memory Layout, Pointer receivers for large structs, Struct field alignment, Zero-size field at end of struct
 
-### Community 32 - "Open"
-Cohesion: 0.14
-Nodes (20): applyMigration(), displayChapter(), migrate(), Open(), refreshOwnerToken(), seedOwner(), TestCoverIsContentAddressedOnFilesystem(), TestCoverPersistsAcrossReopen() (+12 more)
+### Community 31 - "Store"
+Cohesion: 0.08
+Nodes (8): coverRelativePath(), coverSourceAddress(), displayChapter(), Store, scanSeries(), TestDisplayChapter(), Bookmark, ReaderSummary
 
 ### Community 33 - "Go Testing Guide"
 Cohesion: 0.20
@@ -539,29 +534,33 @@ Nodes (3): ADR-0005: On-demand browser sidecar, Constraints, Decision
 Cohesion: 0.48
 Nodes (6): T, TestCreateAndGetSession(), TestDeleteSessionIsPerReader(), TestDeleteSessionRevokes(), TestExpiredSessionIsGone(), TestGetSessionUnknownID()
 
+### Community 156 - "ResponseWriter"
+Cohesion: 0.18
+Nodes (13): AdminPatterns(), HandlerFunc, Request, ResponseWriter, Time, Handler, readerPathID(), since() (+5 more)
+
 ### Community 273 - "AGENTS.md"
 Cohesion: 0.50
 Nodes (3): Live URL shapes (verified 2026-07-26, may drift — re-check against live pages before trust), Second script: `novel-bookmark.user.js`, Userscript structure (single IIFE, `manga-bookmark.user.js`)
 
 ## Knowledge Gaps
-- **524 isolated node(s):** `bookmarkmanager/backend`, `ctxKey`, `loginView`, `ctxKey`, `test` (+519 more)
+- **520 isolated node(s):** `bookmarkmanager/backend`, `ctxKey`, `loginView`, `ctxKey`, `test` (+515 more)
   These have ≤1 connection - possible missing edges or undocumented components.
-- **154 thin communities (<3 nodes) omitted from report** — run `graphify query` to explore isolated nodes.
+- **150 thin communities (<3 nodes) omitted from report** — run `graphify query` to explore isolated nodes.
 
 ## Suggested Questions
 _Questions this graph is uniquely positioned to answer:_
 
-- **Why does `New()` connect `Series Acquisition Tests` to `Open`, `Bookmarks API Tests`, `Cover & Acquire Internals`, `Session Middleware`, `Web UI Handlers`?**
-  _High betweenness centrality (0.045) - this node is a cross-community bridge._
-- **Why does `Open()` connect `Open` to `Cover Fetch Test Helpers`, `Series Acquisition Tests`, `Bookmarks API Tests`, `pgtest.go`, `Store Tests`, `Store`?**
-  _High betweenness centrality (0.033) - this node is a cross-community bridge._
-- **Why does `newRouter()` connect `Bookmarks API Tests` to `Cover Fetch Test Helpers`, `Bookmarks API Handler`, `Series Acquisition Tests`?**
-  _High betweenness centrality (0.027) - this node is a cross-community bridge._
-- **Are the 47 inferred relationships involving `testConfig()` (e.g. with `TestListRendersAcquiredCover()` and `TestPublicCoverNeverEchoesNonImage()`) actually correct?**
-  _`testConfig()` has 47 INFERRED edges - model-reasoned connections that need verification._
-- **Are the 8 inferred relationships involving `newWebTestServer()` (e.g. with `TestListRendersAcquiredCover()` and `TestPublicCoverRejectsUnknownAddress()`) actually correct?**
-  _`newWebTestServer()` has 8 INFERRED edges - model-reasoned connections that need verification._
+- **Why does `Open()` connect `CDP Browser Client` to `Cover Fetch Test Helpers`, `Series Acquisition Tests`, `Bookmarks API Tests`, `pgtest.go`, `Store Tests`, `Store`?**
+  _High betweenness centrality (0.050) - this node is a cross-community bridge._
+- **Why does `New()` connect `Series Acquisition Tests` to `Bookmarks API Tests`, `Cover & Acquire Internals`, `Session Middleware`, `Web UI Handlers`, `CDP Browser Client`, `ResponseWriter`?**
+  _High betweenness centrality (0.048) - this node is a cross-community bridge._
+- **Why does `newRouter()` connect `Bookmarks API Tests` to `Cover Fetch Test Helpers`, `Bookmarks API Handler`, `Series Acquisition Tests`, `ResponseWriter`?**
+  _High betweenness centrality (0.031) - this node is a cross-community bridge._
+- **Are the 48 inferred relationships involving `testConfig()` (e.g. with `TestListRendersAcquiredCover()` and `TestPublicCoverNeverEchoesNonImage()`) actually correct?**
+  _`testConfig()` has 48 INFERRED edges - model-reasoned connections that need verification._
 - **Are the 12 inferred relationships involving `newTestStore()` (e.g. with `TestAcquireDoesNotBlockTheWrite()` and `TestAcquireFailureLeavesTheBookmarkIntact()`) actually correct?**
   _`newTestStore()` has 12 INFERRED edges - model-reasoned connections that need verification._
+- **Are the 8 inferred relationships involving `newWebTestServer()` (e.g. with `TestListRendersAcquiredCover()` and `TestPublicCoverRejectsUnknownAddress()`) actually correct?**
+  _`newWebTestServer()` has 8 INFERRED edges - model-reasoned connections that need verification._
 - **What connects `bookmarkmanager/backend`, `ctxKey`, `loginView` to the rest of the system?**
-  _557 weakly-connected nodes found - possible documentation gaps or missing edges._
+  _552 weakly-connected nodes found - possible documentation gaps or missing edges._

graphify-out/manifest.json

@@ -25,8 +25,8 @@
     "semantic_hash": "dac242903b0e98c3e4395159d609e08e"
   },
   "backend/main.go": {
-    "mtime": 1786859325.126449,
-    "ast_hash": "4ad77c286522f97d14b6009ff37118e5",
+    "mtime": 1786863963.3450089,
+    "ast_hash": "d5a50b03438d7c120079d40cc578462b",
     "semantic_hash": ""
   },
   "skills-lock.json": {
@@ -145,12 +145,12 @@
     "semantic_hash": ""
   },
   "DEPLOY.md": {
-    "mtime": 1786859620.9977603,
+    "mtime": 1786861012.026504,
     "ast_hash": "b7c2f813aded562ee9291c9baed795ad",
     "semantic_hash": ""
   },
   "README.md": {
-    "mtime": 1786859273.3238454,
+    "mtime": 1786861012.026504,
     "ast_hash": "81af12a0a2d43e791efd030b5f4d6cbc",
     "semantic_hash": ""
   },
@@ -160,7 +160,7 @@
     "semantic_hash": "0751998a532297b8ac507a01ec48dc31"
   },
   "docker-compose.yml": {
-    "mtime": 1786859258.6255276,
+    "mtime": 1786861012.026504,
     "ast_hash": "d3b53a8f42a8e0acb4fc4306ea42c093",
     "semantic_hash": ""
   },
@@ -170,12 +170,12 @@
     "semantic_hash": "e51077b6a7f1f67afc748f1a32a1557d"
   },
   "backend/web_test.go": {
-    "mtime": 1786216141.700644,
-    "ast_hash": "8f1b093b59eb1ed81bc7fc0c22495c50",
-    "semantic_hash": "8f1b093b59eb1ed81bc7fc0c22495c50"
+    "mtime": 1786865248.7717106,
+    "ast_hash": "7c298e39c63e4502cf6272d1e206e9ef",
+    "semantic_hash": ""
   },
   "backend/main_test.go": {
-    "mtime": 1786859172.6449091,
+    "mtime": 1786863966.7091317,
     "ast_hash": "0a5d4dbdc770b40c329ccccc899b59f4",
     "semantic_hash": ""
   },
@@ -220,19 +220,19 @@
     "semantic_hash": ""
   },
   "docs/design-system.md": {
-    "mtime": 1786022513.9623306,
-    "ast_hash": "421cd7e57f02d4b467f120ca6ddd7b6a",
-    "semantic_hash": "421cd7e57f02d4b467f120ca6ddd7b6a"
+    "mtime": 1786865139.9022946,
+    "ast_hash": "3bd39932997c8e245508874194db4e49",
+    "semantic_hash": ""
   },
   "backend/api_test.go": {
-    "mtime": 1786499529.7651505,
-    "ast_hash": "8e4b9293bc2e45ee3f42027315594fd5",
+    "mtime": 1786863966.7056258,
+    "ast_hash": "0d443b4fe3c04ab057505d73b8a88d07",
     "semantic_hash": ""
   },
   "backend/cover_test.go": {
-    "mtime": 1786363889.552731,
-    "ast_hash": "c7e313d6c92eb28e6d370e5e89035984",
-    "semantic_hash": "c7e313d6c92eb28e6d370e5e89035984"
+    "mtime": 1786863966.7084978,
+    "ast_hash": "fd6b3f6ef46bd17b0241d104b6e5bdf6",
+    "semantic_hash": ""
   },
   "backend/internal/api/handlers.go": {
     "mtime": 1786363889.552731,
@@ -245,7 +245,7 @@
     "semantic_hash": "385b36f58488b7e6d93eb6d6034e9ee3"
   },
   "backend/internal/latest/browser.go": {
-    "mtime": 1786859355.8677974,
+    "mtime": 1786861012.026504,
     "ast_hash": "75f34a974568d122681939dd297944a2",
     "semantic_hash": ""
   },
@@ -260,17 +260,17 @@
     "semantic_hash": ""
   },
   "backend/internal/latest/poller.go": {
-    "mtime": 1786860083.6713927,
-    "ast_hash": "be728405cde3df49baf72bd7837f2971",
+    "mtime": 1786865046.096795,
+    "ast_hash": "2bfb51177e3df474b80ea1b05523377e",
     "semantic_hash": ""
   },
   "backend/internal/latest/poller_test.go": {
-    "mtime": 1786860168.103984,
-    "ast_hash": "5dba515d28c0523500c1ceb581a54e58",
+    "mtime": 1786865291.3758123,
+    "ast_hash": "1da669ac748a8d1a0289e557392fa3fd",
     "semantic_hash": ""
   },
   "backend/internal/latest/sites.go": {
-    "mtime": 1786860007.8224697,
+    "mtime": 1786861012.026504,
     "ast_hash": "9b90f9b710ccbd0d0a0a6a0dd721ff3c",
     "semantic_hash": ""
   },
@@ -340,13 +340,13 @@
     "semantic_hash": "0b6764a0ee20f5cb7748eecd31a1d220"
   },
   "backend/internal/store/store.go": {
-    "mtime": 1786860012.3431706,
-    "ast_hash": "c62e73142386c58ab833d404d0c24dc4",
+    "mtime": 1786863704.5112119,
+    "ast_hash": "989629af18232e35b12f1eef2a8cb422",
     "semantic_hash": ""
   },
   "backend/internal/store/store_test.go": {
-    "mtime": 1786858248.9426548,
-    "ast_hash": "039729554517960d1ae98f8409baf4ba",
+    "mtime": 1786863712.075631,
+    "ast_hash": "e48f21e34238ba46874cc88cf96e022f",
     "semantic_hash": ""
   },
   "backend/internal/userscript/userscript.go": {
@@ -380,14 +380,14 @@
     "semantic_hash": "19a573773be4ca22570ca2f8543120c5"
   },
   "backend/internal/web/web.go": {
-    "mtime": 1786363889.5678573,
-    "ast_hash": "8308949c658d3a08ce1c3cdbea6a907c",
-    "semantic_hash": "8308949c658d3a08ce1c3cdbea6a907c"
+    "mtime": 1786863744.1453943,
+    "ast_hash": "b051f2de214c4b253ee09fbbdb8ebb60",
+    "semantic_hash": ""
   },
   "backend/reader_credential_test.go": {
-    "mtime": 1786216141.700644,
-    "ast_hash": "2a751ea6d9c06635aa3179db0aef1b2b",
-    "semantic_hash": "2a751ea6d9c06635aa3179db0aef1b2b"
+    "mtime": 1786863966.7092986,
+    "ast_hash": "0c93de387af595901c43b6bdb3bed8cc",
+    "semantic_hash": ""
   },
   "chrome/entrypoint.sh": {
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@@ -415,7 +415,7 @@
     "semantic_hash": "e44a2f6f624db044e19508bc5ab05592"
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   "CONTEXT.md": {
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@@ -425,19 +425,19 @@
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   "backend/AGENTS.md": {
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-    "ast_hash": "7ceec7c4576f6e91eaf02c200a0dd1b3",
+    "mtime": 1786865319.314815,
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   "backend/CLAUDE.md": {
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-    "ast_hash": "7ceec7c4576f6e91eaf02c200a0dd1b3",
+    "mtime": 1786865319.314815,
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   "backend/internal/web/templates/app.html": {
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-    "semantic_hash": "3965e20e204afb71ba2a3aa86cb7c61c"
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   "backend/internal/web/templates/card.html": {
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@@ -465,9 +465,9 @@
     "semantic_hash": "bcc3101498a66cf8b79f9d97c6c9cd6b"
   },
   "backend/internal/web/templates/readers.html": {
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-    "semantic_hash": "c5034e76bd20a705d2799cb5ecb328f0"
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@@ -570,7 +570,7 @@
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@@ -615,7 +615,7 @@
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@@ -630,8 +630,33 @@
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   "docs/adr/0010-poll-lanes-per-site-pace.md": {
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+    "mtime": 1786861012.026504,
     "ast_hash": "dc19d75f034ca920d93b9c71e6ca28e6",
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+  },
+  "backend/internal/latest/status.go": {
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+    "ast_hash": "8141514efa5a7a66e77b9a62d4982d52",
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+  "backend/internal/store/migrations/0010_reader_sightings.sql": {
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+    "ast_hash": "a72c08c63fad530df3c793d16edfa385",
+    "semantic_hash": ""
+  },
+  "backend/internal/web/admin.go": {
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+    "ast_hash": "b1c0f23a102a9bc7f84adf306d743f56",
+    "semantic_hash": ""
+  },
+  "backend/internal/web/templates/admin.html": {
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+    "ast_hash": "f04ea1cb01369d53053eac489e796faa",
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+  "backend/internal/web/templates/lanes.html": {
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+    "ast_hash": "8b9f9c7a56e0ec3bf950aa70acd95e92",
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 }