Graceful degradation before partnership/SSH is set up

Fix 1 — Monitor partner card (common.php + monitor.php):
  vv_remote_hosts_stats() no longer skips hosts with no API key.
  Returns no_api_key:true entry instead. Monitor JS renders
  "API key not configured — complete Onboard to enable" instead
  of a blank space.

Fix 2 — rawconf push not alarming pre-onboard (config.php + scheduler.php):
  Probe failures (Tailscale not found, plugin not installed) now carry
  ready:false. JS treats ready:false results silently — button shows
  "✓ Saved" not "push failed: HOST2" before SSH is set up.
  Only genuine post-onboard failures (ready not false) show as errors.

Fix 3 — Partnership Onboard button (partnership.php):
  Disabled with tooltip when no partner hostname is in master.conf.
  When partner configured but not onboarded, adds explanation note:
  "Onboard will generate your SSH key, exchange it with the partner..."
  No partner configured: "Edit master.conf and set HOST2."

Plugin/unraid/include/common.php

@@ -572,7 +572,11 @@ function vv_remote_hosts_stats(): array {
     foreach ($hostIds as $id) {
         if (strtolower($id) === strtolower($myHost)) continue;
         $key = $vars[strtoupper($id) . '_UNRAID_API_KEY'] ?? '';
-        if (!$key) continue;
+        if (!$key) {
+            $results[$id] = ['available' => false, 'no_api_key' => true,
+                             'host_id' => $id, 'hostname' => $vars[$id]];
+            continue;
+        }
 
         $cacheFile = "/tmp/vv_remote_{$id}.json";
         if (file_exists($cacheFile) && (time() - filemtime($cacheFile)) < 30) {

Plugin/unraid/include/config.php

@@ -84,7 +84,7 @@ function vv_push_master_conf(): array {
         $hostname = trim($m[2][$i]);
         $ip = vv_resolve_tailscale_ip($hostname);
         if (!$ip) {
-            $results[] = ['host' => $hostKey, 'ok' => false, 'error' => 'Tailscale IP not found'];
+            $results[] = ['host' => $hostKey, 'ok' => false, 'ready' => false, 'error' => 'Tailscale IP not found'];
             continue;
         }
 
@@ -102,7 +102,7 @@ function vv_push_master_conf(): array {
         ) ?: '');
 
         if ($probe === '') {
-            $results[] = ['host' => $hostKey, 'ok' => false,
+            $results[] = ['host' => $hostKey, 'ok' => false, 'ready' => false,
                           'error' => 'plugin not installed, dir missing, or master.conf absent — skipped'];
             continue;
         }

Plugin/unraid/pages/monitor.php

@@ -579,6 +579,8 @@ function vvPollMonitor() {
             <span style="color:#444;">Uptime</span>
             <span style="color:#555;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;">${uptimeStr}</span>
           </div>${verWarn}`;
+        } else if (rs && rs.no_api_key) {
+          statsHtml = `<div style="font-size:10px;color:#444;margin-top:4px;">API key not configured — complete Onboard to enable</div>`;
         } else if (rs && !rs.available) {
           statsHtml = `<div style="font-size:10px;color:#444;margin-top:4px;">API unreachable</div>`;
         }

Plugin/unraid/pages/partnership.php

@@ -207,11 +207,15 @@ function _renderActions(nodes, cfg) {
   const remoteOpts = remotes.map(n =>
     `<option value="${n.slot}">${n.id} — ${n.hostname}</option>`).join('');
 
+  const hasPartner = remotes.length > 0 && remotes.some(n => n.hostname);
+
   let html = '<div class="vv-pt-actions">';
 
-  // Onboard
+  // Onboard — disabled until a partner hostname is configured in master.conf
   html += `<button class="vv-pt-action-btn run" onclick="vvPtOnboard(this)"
-    title="Run partnership_onboard.sh — auto-detects role (run on mirror first, then owner)">
+    ${!hasPartner ? 'disabled title="Add partner hostname to master.conf first (Scheduler → master.conf)"' :
+                    'title="Run partnership_onboard.sh — auto-detects role (run on mirror first, then owner)"'}
+    ${!hasPartner ? 'style="opacity:.35;cursor:default;"' : ''}>
     ▶ Onboard
   </button>`;
 
@@ -223,6 +227,18 @@ function _renderActions(nodes, cfg) {
 
   html += '</div>';
 
+  // Contextual note under actions
+  if (!hasPartner) {
+    html += `<div style="font-size:11px;color:#444;margin-top:8px;">
+      No partner hostname configured. Edit master.conf (Scheduler tab) and set HOST2.
+    </div>`;
+  } else if (!cfg.enabled) {
+    html += `<div style="font-size:11px;color:#555;margin-top:8px;">
+      Onboard will generate your SSH key, exchange it with the partner, and establish the partnership.
+      Run on the mirror (HOST2) first, then on the owner (HOST1).
+    </div>`;
+  }
+
   // Transfer — show manual command, too destructive to one-click
   if (cfg.enabled && isOwner) {
     const confirmStr = 'i-understand-this-transfers-ownership';

Plugin/unraid/pages/scheduler.php

@@ -2635,13 +2635,16 @@ function vvSaveRawConf() {
       }
 
       // Normal save: show push status
+      // ready:false = partner not set up yet (pre-onboard) — treat as silent, not an error
       const push       = d.push ?? [];
-      if (push.length === 0) {
+      const synced     = push.filter(p => p.ok);
-        btn.textContent = '✓ Saved';
+      const realFailed = push.filter(p => !p.ok && p.ready !== false);
-      } else if (push.every(p => p.ok)) {
+      if (realFailed.length > 0) {
-        btn.textContent = '✓ Saved · synced to ' + push.map(p => p.host).join(', ');
+        btn.textContent = '✓ Saved · push failed: ' + realFailed.map(p => p.host).join(', ');
+      } else if (synced.length > 0) {
+        btn.textContent = '✓ Saved · synced to ' + synced.map(p => p.host).join(', ');
       } else {
-        btn.textContent = '✓ Saved · push failed: ' + push.filter(p => !p.ok).map(p => p.host).join(', ');
+        btn.textContent = '✓ Saved';
       }
       setTimeout(() => { btn.textContent = 'Save Conf'; }, 3500);
     })