Green mesh banner on each remote card, naming the failing leg when it is not green

Plugin/unraid/include/partnership.php

@@ -548,6 +548,15 @@ function vv_pt_nodes(): array {
             'api_key_preview' => $apiKeyPreview,
             'metrics'         => $metrics,
             'media_seed'      => $isMe ? [] : vv_pt_media_seed($setupDb, $nodeIdUpper),
+            // Every condition that has to hold for this partner to actually be usable, each
+            // reported separately. One rolled-up boolean would have said "not ok" for the last
+            // hour without saying that the only failing part was a name lookup.
+            'mesh'            => $isMe ? null : [
+                'tailscale'   => $ts['online'] === true,
+                'ssh'         => !empty($system['unraid_version']) || !empty($system['uptime_sec']),
+                'partnership' => ($ptDb['state'] ?? '') === 'ACTIVE',
+                'onboarded'   => $onboardPhase >= 2,
+            ],
         ];
     }
     return $nodes;

Plugin/unraid/pages/partnership.php

@@ -1311,6 +1311,30 @@ function _renderActions(nodes, cfg) {
         }
       }
 
+      // ── Mesh health banner ─────────────────────────────────────────────────
+      // Green only when every leg holds. When one does not, the banner names which — "mesh
+      // degraded" on its own sends someone hunting through four subsystems, and the answer is
+      // already known here.
+      const mesh = remote.mesh;
+      if (mesh) {
+        const legs = [
+          ['Tailscale',   mesh.tailscale],
+          ['SSH',         mesh.ssh],
+          ['Partnership', mesh.partnership],
+          ['Onboarded',   mesh.onboarded],
+        ];
+        const bad = legs.filter(l => !l[1]).map(l => l[0]);
+        const ok  = bad.length === 0;
+        html += `<div style="margin-top:9px;padding:7px 10px;border-radius:3px;
+            background:${ok ? '#0a1a0a' : '#1a1200'};border:1px solid ${ok ? '#1a4a1a' : '#3a2800'};
+            display:flex;align-items:center;gap:8px;flex-wrap:wrap;">
+          <span style="font-size:11px;color:${ok ? '#4caf50' : '#ff9800'};font-weight:600;">
+            ${ok ? '✓ Mesh connected — all systems good' : '⚠ Mesh degraded'}</span>
+          <span style="font-size:9px;color:${ok ? '#2e6b2e' : '#8a6a2a'};font-family:monospace;">
+            ${ok ? legs.map(l => l[0]).join(' · ') : 'failing: ' + bad.join(', ')}</span>
+        </div>`;
+      }
+
       // ── Delete Keys panel ──────────────────────────────────────────────────
       if (isDeleting) {
         html += `<div style="margin-top:10px;padding:10px;background:#0a0a0a;border:1px solid #2a1515;