Fix onboarding wizard: consistent card styling, footer spacing, and password description

Agent-Logs-Url: https://github.com/naturallaw777/staging_alpha/sessions/ce004fc7-c96f-4765-bc21-87ce579352d0

Co-authored-by: naturallaw777 <99053422+naturallaw777@users.noreply.github.com>

app/sovran_systemsos_web/templates/onboarding.html

@@ -78,7 +78,7 @@
           <span class="onboarding-step-icon">🔒</span>
           <h2 class="onboarding-step-title">Create Your Password</h2>
           <p class="onboarding-step-desc">
-            Choose a strong password for your <strong>'free'</strong> user account. This will be your login password for the desktop, SSH, and the Hub.
+            Choose a strong password for your <strong>'free'</strong> user account.
           </p>
         </div>
         <div class="onboarding-card" id="step-2-body">
@@ -127,7 +127,7 @@
             <strong>Ports 80 and 443 must be open for SSL certificates to work.</strong>
           </p>
         </div>
-        <div class="onboarding-card onboarding-card--ports" id="step-4-body">
+        <div class="onboarding-card onboarding-card--scroll" id="step-4-body">
           <p class="onboarding-loading">Checking ports…</p>
         </div>
         <div class="onboarding-footer">