Treat an ACTIVE partnership as phase 2 regardless of the flags

HOST<n>_PHASE*_DONE only ever describe the mirror, so on the mirror the owner's card computed phase 0 and offered to onboard the host that had just onboarded it.

Plugin/unraid/include/partnership.php

@@ -371,6 +371,17 @@ function vv_pt_nodes(): array {
         $nodeIdUpper  = strtoupper($slot);
         $onboardPhase = ($setupDb[$nodeIdUpper . '_PHASE2_DONE'] ?? '') === 'true' ? 2
                       : (($setupDb[$nodeIdUpper . '_PHASE1_DONE'] ?? '') === 'true' ? 1 : 0);
+
+        // An ACTIVE partnership means phase 2, whatever the flags say. HOST<n>_PHASE*_DONE always
+        // describe the MIRROR — they are the owner's record of how far it got provisioning the
+        // other side — so the owner's own slot has no such flag and never will. On the mirror
+        // that left the owner's card computing phase 0 and rendering "Not provisioned · SSH keys
+        // not installed", complete with an ▶ Onboard button, on the very host that had just
+        // finished onboarding it. The state file is the authority on whether a partnership
+        // exists; the flags only say who did what to whom.
+        if ($onboardPhase < 2 && ($ptDb['state'] ?? '') === 'ACTIVE') {
+            $onboardPhase = 2;
+        }
         // key_ready: local key generated but not yet installed on HOST2 (SSH pending manual step)
         $keyReady  = !$isMe && ($setupDb[$nodeIdUpper . '_KEY_READY'] ?? '') === 'true';
         // For self: local setup complete flag (set by partnership_manager --onboard --local-only)