chore: update @ciphera-net/ui dependency to version 0.0.49 and refactor terminology in layout content for consistency

app/auth/callback/page.tsx

@@ -36,7 +36,9 @@ function AuthCallbackContent() {
       if (localStorage.getItem('pulse_pending_checkout')) {
         router.push('/welcome')
       } else {
-        router.push('/')
+        const raw = searchParams.get('returnTo') || '/'
+        const safe = (typeof raw === 'string' && raw.startsWith('/') && !raw.startsWith('//')) ? raw : '/'
+        router.push(safe)
       }
     } else {
       setError(authMessageFromErrorType(result.error as AuthErrorType))

app/layout-content.tsx

@@ -26,7 +26,7 @@ export default function LayoutContent({ children }: { children: React.ReactNode
     }
   }, [auth.user])
 
-  const handleSwitchWorkspace = async (orgId: string | null) => {
+  const handleSwitchOrganization = async (orgId: string | null) => {
     if (!orgId) return // Pulse doesn't support personal workspace
     try {
       const { access_token } = await switchContext(orgId)
@@ -56,9 +56,9 @@ export default function LayoutContent({ children }: { children: React.ReactNode
         appName="Pulse"
         orgs={orgs}
         activeOrgId={auth.user?.org_id}
-        onSwitchWorkspace={handleSwitchWorkspace}
+        onSwitchOrganization={handleSwitchOrganization}
         onCreateOrganization={handleCreateOrganization}
-        allowPersonalWorkspace={false}
+        allowPersonalOrganization={false}
         showFaq={false}
         showSecurity={false}
         showPricing={true}

app/welcome/page.tsx

@@ -686,9 +686,15 @@ function WelcomeContent() {
                     variant="primary"
                     className="flex-1"
                     disabled={siteLoading || !siteName.trim() || !siteDomain.trim()}
-                    isLoading={siteLoading}
                   >
-                    Add site
+                    {siteLoading ? (
+                      <>
+                        <span className="inline-block h-4 w-4 border-2 border-current border-t-transparent rounded-full animate-spin mr-2" aria-hidden />
+                        Adding...
+                      </>
+                    ) : (
+                      'Add site'
+                    )}
                   </Button>
                   <Button
                     type="button"