Tell a decommissioned domain apart from a broken one in the uptime history

Plugin/unraid/api/auth.php

@@ -203,6 +203,11 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
                 'last_change' => $r['last_change'] ?? null,
                 'last_detail' => $r['last_detail'] ?? null,
                 'last_ms' => $r['last_ms'] ?? null,
+                // When this domain was last actually probed. The probe follows NPM's host list, so
+                // a domain removed there simply stops being visited while its record stays here —
+                // and a stored state of "down" then describes the moment it left, not today. The
+                // card needs this to tell "broken" from "no longer served".
+                'last_at' => $r['last_at'] ?? null,
                 // The history card below the table. One aligned series per period rather than the
                 // raw buckets: the client would otherwise have to re-derive calendar keys to know
                 // which of thirty slots a given day belongs in, and there would then be two

Plugin/unraid/pages/auth.php

@@ -345,6 +345,9 @@ require_once dirname(__DIR__) . '/include/ai_chat.php';
    absence — flat, unsaturated, no height to compare against the bars beside it. */
 .vv-au-hb-bars i.vv-au-hb-gap { background:#191919; height:2px !important; }
 .vv-au-hb-cover { font-size:9px; color:#3a3a3a; font-family:monospace; line-height:1; }
+/* Dimmed rather than hidden: the history is real and worth keeping, the domain just is not being
+   served any more. Sorted below the live ones, so it never leads the card at 0%. */
+.vv-au-hb-dom.vv-au-hb-stale { color:#4a4a4a; }
 
 /* ── Why ─────────────────────────────────────────────────────────────────── */
 /* On the figure's own line, not under the strip: the strip is 179px of fixed-width bars and is what
@@ -968,14 +971,31 @@ function _renderUptimeHistory() {
     const vals = _UP_PERIODS.map(([k]) => h[k] && h[k].pct).filter(v => v !== null && v !== undefined);
     return vals.length ? Math.min(...vals) : 101;
   };
-  doms.sort((a, b) => score(a) - score(b) || a.localeCompare(b));
+
+  // The probe follows NPM's host list, so a domain removed there stops being visited while its
+  // record stays in the store — frozen at whatever it was doing when it left. Its stored state is
+  // then a fact about that moment and not about now, and the worst thing this card could do is
+  // report a decommissioned host as down: it reads as an outage nobody is fixing.
+  //
+  // Ten minutes at a one-minute cadence, so a single missed pass or a slow one never counts. The
+  // history stays visible — it was true — but the row says so and sorts below live domains rather
+  // than leading the list at 0%.
+  const _now = Math.round(Date.now() / 1000);
+  const stale = d => !_uptime[d].last_at || (_now - _uptime[d].last_at) > 600;
+
+  doms.sort((a, b) => (stale(a) - stale(b)) || score(a) - score(b) || a.localeCompare(b));
 
   box.innerHTML = doms.map(d => {
     const rec = _uptime[d], h = rec.hist || {};
-    // Three states, not two: a domain the probe has never reached a verdict on is grey. Painting
-    // it green because it is "not down" would be the card asserting something it does not know.
-    const dot = rec.state === 'down' ? '#ef5350' : (rec.state === 'up' ? '#2d5a2d' : '#333');
-    const dotT = rec.state === 'down' ? 'down now' : (rec.state === 'up' ? 'up now' : 'not yet probed');
+    // Four states, not two: up, down, never probed, and no longer probed. Painting a domain green
+    // because it is "not down", or red when nobody has asked it anything for eleven hours, would
+    // both be the card asserting something it does not know.
+    const st = stale(d);
+    const dot = st ? '#333'
+              : (rec.state === 'down' ? '#ef5350' : (rec.state === 'up' ? '#2d5a2d' : '#333'));
+    const dotT = st ? ('last probed ' + (rec.last_at ? _ago(rec.last_at) + ' ago' : 'never')
+                       + ' — no longer in NPM, so nothing is checking it')
+              : (rec.state === 'down' ? 'down now' : (rec.state === 'up' ? 'up now' : 'not yet probed'));
     const cells = _UP_PERIODS.map(([k]) => {
       const p = h[k];
       if (!p) return '<div class="vv-au-hb-cell"><span class="vv-au-hb-pct vv-au-hb-dim">—</span></div>';
@@ -1001,8 +1021,8 @@ function _renderUptimeHistory() {
     }).join('');
 
     return `<div class="vv-au-hb-row">
-      <span class="vv-au-hb-dom"><span class="vv-au-dot" style="background:${dot}"
-            title="${dotT}"></span>${_esc(d)}</span>
+      <span class="vv-au-hb-dom ${st ? 'vv-au-hb-stale' : ''}"><span class="vv-au-dot" style="background:${dot}"
+            title="${dotT}"></span>${_esc(d)}${st ? '<span class="vv-au-hb-cover"> not served</span>' : ''}</span>
       ${cells}
     </div>`;
   }).join('');