Add CEO OpenClaw invite endpoint and update onboarding UX

ui/src/pages/CompanySettings.tsx

@@ -77,9 +77,7 @@ export function CompanySettings() {
 
   const inviteMutation = useMutation({
     mutationFn: () =>
-      accessApi.createCompanyInvite(selectedCompanyId!, {
-        allowedJoinTypes: "agent"
-      }),
+      accessApi.createOpenClawInvitePrompt(selectedCompanyId!),
     onSuccess: async (invite) => {
       setInviteError(null);
       const base = window.location.origin.replace(/\/+$/, "");
@@ -317,9 +315,9 @@ export function CompanySettings() {
         <div className="space-y-3 rounded-md border border-border px-4 py-4">
           <div className="flex items-center gap-1.5">
             <span className="text-xs text-muted-foreground">
-              Generate an agent snippet for join flows.
+              Generate an openclaw agent invite snippet.
             </span>
-            <HintIcon text="Creates an agent-only invite (10m) and renders a copy-ready snippet." />
+            <HintIcon text="Creates a short-lived OpenClaw agent invite and renders a copy-ready prompt." />
           </div>
           <div className="flex flex-wrap items-center gap-2">
             <Button
@@ -329,7 +327,7 @@ export function CompanySettings() {
             >
               {inviteMutation.isPending
                 ? "Generating..."
-                : "Generate agent snippet"}
+                : "Generate OpenClaw Invite Prompt"}
             </Button>
           </div>
           {inviteError && (
@@ -339,7 +337,7 @@ export function CompanySettings() {
             <div className="rounded-md border border-border bg-muted/30 p-2">
               <div className="flex items-center justify-between gap-2">
                 <div className="text-xs text-muted-foreground">
-                  Agent Snippet
+                  OpenClaw Invite Prompt
                 </div>
                 {snippetCopied && (
                   <span