Skip the key step when SSH already works, and read the install path live on both sides

Plugin/unraid/pages/partnership.php

@@ -626,6 +626,11 @@ async function vvPtSaveSettings(btn) {
 // ── Private page logic ─────────────────────────────────────────────────────────
 (function() {
 
+// Resolve the install path once, up front, and redraw when it lands. termCmd is built
+// synchronously inside _renderActions, so without this the first paint would use the
+// render-time fallback — right on a flash host, wrong on one that moved to appdata.
+vvScriptsDir(<?= json_encode(SCRIPTS_DIR) ?>).then(() => { if (_vvPtReload) _vvPtReload(); });
+
 // ── Helpers ───────────────────────────────────────────────────────────────────
 
 function _row(lbl, val) {
@@ -950,7 +955,11 @@ function _renderActions(nodes, cfg) {
   const remotes    = nodes.filter(n => !n.is_me);
   const hasPartner = remotes.some(n => n.hostname);
   const termBase   = `https://${window.location.hostname}/webterminal/ttyd/`;
-  const termCmd    = `bash <?= SCRIPTS_DIR ?>/Partnership/partnership_onboard.sh --phase1-only`;
+  // _vvScriptsDir is filled by the live probe below and falls back to the render-time value.
+  // Both matter: a host in appdata must be handed its appdata path, and this panel is rendered
+  // on whichever side is the mirror — so it cannot assume either layout. The owner and the
+  // mirror are independently either flash or appdata.
+  const termCmd    = `bash ${_vvScriptsDir || <?= json_encode(SCRIPTS_DIR) ?>}/Partnership/partnership_onboard.sh --phase1-only`;
 
   let html = '';