diff --git a/Plugin/unraid/api/fallback_coverage.php b/Plugin/unraid/api/fallback_coverage.php
index 76de81d..02ac2be 100644
--- a/Plugin/unraid/api/fallback_coverage.php
+++ b/Plugin/unraid/api/fallback_coverage.php
@@ -88,6 +88,30 @@ if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
     }
     sort($containers, SORT_NATURAL | SORT_FLAG_CASE);
 
+    // Containers the partner already runs continuously, because onboard deployed them there.
+    // They cannot be failover material: there is nothing to start during an outage that is not
+    // already up, and a tier assignment for one would be a delay applied to a running container.
+    //
+    // The stacks store XML template filenames, and their case does not have to agree with the
+    // container's — this conf ships "my-prowlarr.xml" against a container named "Prowlarr" — so
+    // the mapping is done case-insensitively, once, here.
+    $stackOf = [];
+    $byLower = [];
+    foreach ($containers as $n) $byLower[strtolower($n)] = $n;
+    foreach ([
+        'auth'     => "{$hostUp}_PARTNERSHIP_AUTH_STACK",
+        'arrs'     => "{$hostUp}_PARTNERSHIP_ARR_STACK",
+        'services' => "{$hostUp}_PARTNERSHIP_SERVICES_STACK",
+    ] as $label => $var) {
+        foreach (vv_parse_conf_list($raw, $var) as $xml) {
+            $n = preg_replace('/^my-|\.xml$/', '', trim($xml));
+            if ($n === '') continue;
+            // The container's real name where this host has one, the template's otherwise: a
+            // stack entry for something not installed here is still a stack entry.
+            $stackOf[$byLower[strtolower($n)] ?? $n] = $label;
+        }
+    }
+
     // Named in a tier but not installed here. Reported rather than filtered: a tier entry for a
     // container that does not exist is a line fallback.sh fails on during an outage, which is
     // the worst possible moment to find a typo.
@@ -100,6 +124,7 @@ if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
         'host'       => $hostUp,
         'containers' => $containers,
         'cover'      => (object)$cover,
+        'stacks'     => (object)$stackOf,
         'missing'    => $missing,
         'tier_vars'  => array_map($tierVar, $TIERS),
     ]);
@@ -125,6 +150,22 @@ foreach ($TIERS as $t) {
     }
 }
 
+
+// Stack containers refused here, not only greyed out in the picker. The card disables their
+// selects, but a disabled input is a courtesy to the operator, not a constraint on the endpoint —
+// and a tier assignment for a container the partner already runs permanently is a delay attached
+// to something that never stops.
+$stackNames = [];
+foreach ([
+    "{$hostUp}_PARTNERSHIP_AUTH_STACK",
+    "{$hostUp}_PARTNERSHIP_ARR_STACK",
+    "{$hostUp}_PARTNERSHIP_SERVICES_STACK",
+] as $var) {
+    foreach (vv_parse_conf_list($existingRaw, $var) as $xml) {
+        $n = preg_replace('/^my-|\.xml$/', '', trim($xml));
+        if ($n !== '') $stackNames[strtolower($n)] = true;
+    }
+}
 $map = json_decode((string)($_POST['tiers'] ?? ''), true);
 if (!is_array($map)) { echo json_encode(['ok' => false, 'error' => 'tiers must be an object']); exit; }
 
@@ -137,6 +178,10 @@ foreach ($map as $name => $tier) {
     if (!isset($known[strtolower((string)$name)])) {
         echo json_encode(['ok' => false, 'error' => "No container named $name on this host"]); exit;
     }
+    if (isset($stackNames[strtolower((string)$name)])) {
+        echo json_encode(['ok' => false,
+            'error' => "$name is deployed to the partner as part of a stack — it already runs there, so it cannot be given a fallback tier"]); exit;
+    }
     $byTier[$t][] = $known[strtolower((string)$name)];
 }
 
diff --git a/Plugin/unraid/pages/fallback.php b/Plugin/unraid/pages/fallback.php
index 769d0f2..29a6d12 100644
--- a/Plugin/unraid/pages/fallback.php
+++ b/Plugin/unraid/pages/fallback.php
@@ -55,6 +55,46 @@ require_once dirname(__DIR__) . '/include/ai_chat.php';
 if (vv_ai_ui_on()) vv_ai_chat_assets();
 ?>
 <style>
+/* ── Fallback coverage ── */
+/* One continuum, worst outcome to best: never comes back → 24h → 12h → 4h → immediate → never
+   goes down at all. The colour answers "how long am I without this if the partner takes over",
+   which is the only question the card is asked. */
+.vv-fb-cv-t0    { --cv:#3a3a3a; --cvbg:#141414; }   /* not covered — lost for the outage   */
+.vv-fb-cv-t4    { --cv:#ef5350; --cvbg:#1c1010; }   /* 24h                                  */
+.vv-fb-cv-t3    { --cv:#ff7043; --cvbg:#1c1410; }   /* 12h                                  */
+.vv-fb-cv-t2    { --cv:#ffa726; --cvbg:#1c1710; }   /* 4h                                   */
+.vv-fb-cv-t1    { --cv:#ffd54f; --cvbg:#1c1a10; }   /* immediate                            */
+.vv-fb-cv-lock  { --cv:#4caf50; --cvbg:#101c12; }   /* already running there — never down   */
+.vv-fb-cv-arrs  { --cv:#4dd0e1; --cvbg:#101a1c; }   /* arrs stack, told apart from auth     */
+
+.vv-fb-cv-row   { display:flex;align-items:center;gap:7px;padding:3px 7px;border-radius:4px;
+                  border:1px solid #1c1c1c;background:var(--cvbg);margin-bottom:3px;min-width:0; }
+.vv-fb-cv-row.on{ border-color:#2e2e2e; border-color:color-mix(in srgb, var(--cv) 35%, #1c1c1c); }
+.vv-fb-cv-dot   { width:7px;height:7px;border-radius:50%;background:var(--cv);flex-shrink:0; }
+.vv-fb-cv-nm    { font-size:11px;color:#bbb;min-width:0;overflow:hidden;text-overflow:ellipsis;
+                  white-space:nowrap;flex:1; }
+.vv-fb-cv-row.t0 .vv-fb-cv-nm { color:#5a5a5a; }
+.vv-fb-cv-tag   { font-size:8px;letter-spacing:.05em;text-transform:uppercase;padding:1px 5px;
+                  border-radius:3px;flex-shrink:0;color:var(--cv);
+                  /* Solid fallbacks first: without color-mix() these resolve to transparent,
+                     which is an invisible tag rather than a plainly-coloured one. */
+                  background:#181818; border:1px solid #2e2e2e;
+                  background:color-mix(in srgb, var(--cv) 14%, transparent);
+                  border-color:color-mix(in srgb, var(--cv) 30%, transparent); }
+.vv-fb-cv-sel   { background:#111;border:1px solid #262626;color:#aaa;border-radius:3px;
+                  font-size:10px;padding:2px 3px;width:52px;flex-shrink:0;cursor:pointer; }
+.vv-fb-cv-sel:disabled { opacity:.35;cursor:not-allowed; }
+
+/* Summary strip — the card's headline. Reads left to right as the recovery timeline. */
+.vv-fb-cv-sum   { display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px; }
+.vv-fb-cv-chip  { display:flex;align-items:center;gap:5px;font-size:10px;padding:3px 8px;
+                  border-radius:4px;background:var(--cvbg);color:var(--cv);
+                  border:1px solid #2e2e2e;
+                  border-color:color-mix(in srgb, var(--cv) 28%, transparent); }
+.vv-fb-cv-chip b{ font-size:13px;font-weight:700;line-height:1; }
+.vv-fb-cv-grp   { font-size:9px;color:#444;text-transform:uppercase;letter-spacing:.07em;
+                  margin:8px 0 4px;display:flex;align-items:center;gap:6px; }
+.vv-fb-cv-grp::after { content:'';flex:1;height:1px;background:#1a1a1a; }
 /* ── Host card: daemon, freshness, reachability, controls ── */
 /* Class names are all vv-fb-* prefixed. Unraid Connect injects a global Tailwind layer into
    every page, so a bare utility-shaped name like `fixed` or `grid` would be captured by it. */
@@ -205,7 +245,7 @@ if (vv_ai_ui_on()) vv_ai_chat_assets();
   <div style="grid-column:1/-1;color:#444;font-size:12px;padding:16px 0;text-align:center;">Loading…</div>
 </div>
 
-<!-- Failover coverage — this host's own tiers -->
+<!-- Fallback coverage — this host's own tiers -->
 <!--
   Originally on the Partnership page (e8ee5b0), removed the same day in 1a836da because it
   describes what runs during an outage, and never rehomed. This is that card, back where it
@@ -218,11 +258,11 @@ if (vv_ai_ui_on()) vv_ai_chat_assets();
 -->
 <div class="vv-card" id="vv-fb-cov-card" style="margin-bottom:12px;">
   <div style="display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:4px;">
-    <h3 style="margin:0;">Failover coverage</h3>
+    <h3 style="margin:0;">Fallback coverage</h3>
     <span style="font-size:10px;color:#444;" id="vv-fb-cov-sub">Loading…</span>
   </div>
   <div style="font-size:10px;color:#3f3f3f;margin-bottom:9px;line-height:1.45;">
-    Which of <b style="color:#666;">this host's</b> containers the partner starts when this host goes dark.
+    Which of <b style="color:#666;">this host's</b> containers the partner starts when this host goes dark. Anything already deployed there — the auth and arr stacks — never goes down, so it takes no tier.
     Tier 1 is immediate; later tiers wait out the delays set in this host's conf.
     To change what <span id="vv-fb-cov-partner" style="color:#666;">the partner</span> hands to us, open this page there.
   </div>
@@ -857,39 +897,93 @@ function vvFbCovLoad() {
     });
 }
 
+// Delay label per tier, from the same conf the daemon reads, so the card cannot claim a timing
+// the failover will not honour.
+function _cvDelay(t, td) {
+  if (t === 1) return 'immediate';
+  const m = (td || {})['tier' + t];
+  if (m === null || m === undefined) return '';
+  return _fmtDelay(m);
+}
+
 function _vvFbCovRender() {
   const d = _vvFbCov;
   const body = document.getElementById('vv-fb-cov-body');
   if (!d || !body) return;
 
+  const stacks = d.stacks || {};
+  const miss   = new Set((d.missing || []).map(s => s.toLowerCase()));
+  const td     = (_vvFbLast && _vvFbLast.tier_delays) || {};
+
+  const all = [...new Set([...(d.containers || []), ...Object.keys(d.cover || {}), ...Object.keys(stacks)])]
+                .sort((a, b) => a.localeCompare(b, undefined, { sensitivity: 'base' }));
+
+  // Bucket first, render second. Alphabetical across 49 rows answers "where is X"; grouped by
+  // tier answers "what happens when this host goes dark", which is what the card is for.
+  const buckets = { lock: [], 1: [], 2: [], 3: [], 4: [], 0: [] };
+  for (const name of all) {
+    const st = stacks[name];
+    if (st) { buckets.lock.push([name, st]); continue; }
+    buckets[d.cover?.[name] ?? 0].push([name, null]);
+  }
+
+  const row = (name, stack) => {
+    const tier = stack ? null : (d.cover?.[name] ?? 0);
+    const cls  = stack ? (stack === 'arrs' ? 'vv-fb-cv-arrs' : 'vv-fb-cv-lock') : 'vv-fb-cv-t' + tier;
+    const gone = miss.has(name.toLowerCase());
+    // Locked, and the select says why rather than simply refusing to move: these already run on
+    // the partner, so a tier would be a delay applied to a container that never stops.
+    const opts = stack
+      ? '<option>up</option>'
+      : [0, 1, 2, 3, 4].map(t =>
+          `<option value="${t}"${t === tier ? ' selected' : ''}>${t === 0 ? '—' : 'T' + t}</option>`).join('');
+    const tag = stack
+      ? `<span class="vv-fb-cv-tag">${stack === 'services' ? 'svc' : vvEscHtml(stack)}</span>`
+      : (gone ? '<span class="vv-fb-cv-tag" style="--cv:#ef5350;">gone</span>' : '');
+    return `<div class="vv-fb-cv-row ${cls}${(stack || tier) ? ' on' : ' t0'}">
+      <span class="vv-fb-cv-dot"></span>
+      <span class="vv-fb-cv-nm" title="${vvEscAttr(name)}">${vvEscHtml(name)}</span>
+      ${tag}
+      <select class="vv-fb-cv-sel vv-fb-cov-sel" data-cov="${vvEscAttr(name)}"
+              ${stack ? 'disabled title="Deployed to the partner as part of the ' + vvEscAttr(stack) + ' stack — it is already running there"' : ''}>${opts}</select>
+    </div>`;
+  };
+
+  // Summary strip: the recovery timeline, worst first. Counts only, because the detail is
+  // directly below it and a chip that lists names stops being scannable at three containers.
+  const chip = (cls, n, label) => n
+    ? `<span class="vv-fb-cv-chip ${cls}"><b>${n}</b> ${label}</span>` : '';
+  const sum = [
+    chip('vv-fb-cv-lock', buckets.lock.filter(x => x[1] !== 'arrs').length, 'auth · always up'),
+    chip('vv-fb-cv-arrs', buckets.lock.filter(x => x[1] === 'arrs').length, 'arrs · always up'),
+    chip('vv-fb-cv-t1', buckets[1].length, 'immediate'),
+    chip('vv-fb-cv-t2', buckets[2].length, _cvDelay(2, td)),
+    chip('vv-fb-cv-t3', buckets[3].length, _cvDelay(3, td)),
+    chip('vv-fb-cv-t4', buckets[4].length, _cvDelay(4, td)),
+    chip('vv-fb-cv-t0', buckets[0].length, 'not covered'),
+  ].join('');
+
+  const group = (label, items) => items.length
+    ? `<div class="vv-fb-cv-grp">${label}</div>` + items.map(([n, s]) => row(n, s)).join('')
+    : '';
+
+  const cols = `<div style="max-height:360px;overflow:auto;display:grid;`
+             + `grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0 14px;align-content:start;">`;
+
+  body.innerHTML =
+      `<div class="vv-fb-cv-sum">${sum}</div>`
+    + cols
+    + group('Always up · deployed to the partner', buckets.lock)
+    + group('Tier 1 · immediate',                  buckets[1])
+    + group('Tier 2 · ' + _cvDelay(2, td),         buckets[2])
+    + group('Tier 3 · ' + _cvDelay(3, td),         buckets[3])
+    + group('Tier 4 · ' + _cvDelay(4, td),         buckets[4])
+    + group('Not covered',                         buckets[0])
+    + `</div>`;
+
   const sub = document.getElementById('vv-fb-cov-sub');
   const n   = Object.keys(d.cover || {}).length;
-  if (sub) sub.textContent = `${d.host} · ${n} container${n !== 1 ? 's' : ''} covered`;
-
-  // Names in a tier that are not installed here. Kept and shown rather than dropped: a tier
-  // entry for a container that does not exist is a line fallback.sh fails on mid-outage.
-  const miss = new Set((d.missing || []).map(s => s.toLowerCase()));
-  const all  = [...new Set([...(d.containers || []), ...Object.keys(d.cover || {})])]
-                 .sort((a, b) => a.localeCompare(b, undefined, { sensitivity: 'base' }));
-
-  const rows = all.map(name => {
-    const cur = d.cover?.[name] ?? 0;
-    const gone = miss.has(name.toLowerCase());
-    const opts = [0, 1, 2, 3, 4].map(t =>
-      `<option value="${t}"${t === cur ? ' selected' : ''}>${t === 0 ? '—' : 'T' + t}</option>`).join('');
-    return `<div style="display:flex;align-items:center;gap:8px;padding:3px 0;border-bottom:1px solid #171717;">
-      <select class="vv-fb-set-inp vv-fb-cov-sel" style="width:56px;flex-shrink:0;"
-              data-cov="${vvEscAttr(name)}">${opts}</select>
-      <span style="font-size:11px;color:${cur ? '#ccc' : '#555'};min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vvEscHtml(name)}</span>
-      ${gone ? '<span class="vv-fb-leg no" style="flex-shrink:0;">not installed</span>' : ''}
-    </div>`;
-  }).join('');
-
-  // Three columns. One column of forty-nine rows is a scroll, not a list — you cannot see what
-  // is covered without dragging, which is the one thing this card exists to show.
-  body.innerHTML = '<div style="max-height:340px;overflow:auto;display:grid;'
-                 + 'grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:0 14px;">'
-                 + rows + '</div>';
+  if (sub) sub.textContent = `${d.host} · ${n} in a tier · ${buckets.lock.length} always up`;
 }
 
 // Tier 0 means "not covered" — the picker's way of removing something, since an array the
@@ -904,6 +998,10 @@ document.getElementById('vv-fb-cov-card')?.addEventListener('change', ev => {
 
 function vvFbCovSet(name, val) {
   if (!_vvFbCov) return;
+  // Locked rows carry a disabled select, so this cannot normally fire for one — but the guard is
+  // cheap and the endpoint refuses them anyway, and a state the UI can hold but not save is worse
+  // than one it refuses to hold.
+  if ((_vvFbCov.stacks || {})[name]) return;
   const t = parseInt(val, 10);
   if (t === 0) delete _vvFbCov.cover[name];
   else _vvFbCov.cover[name] = t;