feat: DashboardShell for all auth pages, site settings modal from home

- layout-content wraps integrations/pricing in DashboardShell
- GlassTopBar derives title per page (Integrations, Pricing, etc.)
- Site card gear icon opens settings modal with siteId context
- Removed delete button from site cards (accessible via site settings)
- Extended InitialTab to accept optional siteId for cross-page use

app/page.tsx

@@ -33,7 +33,6 @@ export default function HomePage() {
   const [siteStats, setSiteStats] = useState<SiteStatsMap>({})
   const [subscription, setSubscription] = useState<SubscriptionDetails | null>(null)
   const [showFinishSetupBanner, setShowFinishSetupBanner] = useState(true)
-  const [deleteModalSite, setDeleteModalSite] = useState<Site | null>(null)
   const [deletedSites, setDeletedSites] = useState<Site[]>([])
   const [permanentDeleteSiteModal, setPermanentDeleteSiteModal] = useState<Site | null>(null)
 
@@ -119,11 +118,6 @@ export default function HomePage() {
     }
   }
 
-  const handleDelete = (id: string) => {
-    const site = sites.find((s) => s.id === id)
-    if (site) setDeleteModalSite(site)
-  }
-
   const handleRestore = async (id: string) => {
     try {
       await restoreSite(id)
@@ -312,18 +306,9 @@ export default function HomePage() {
       )}
 
       {(sitesLoading || sites.length > 0) && (
-        <SiteList sites={sites} siteStats={siteStats} loading={sitesLoading} onDelete={handleDelete} />
+        <SiteList sites={sites} siteStats={siteStats} loading={sitesLoading} />
       )}
 
-      <DeleteSiteModal
-        open={!!deleteModalSite}
-        onClose={() => setDeleteModalSite(null)}
-        onDeleted={loadSites}
-        siteName={deleteModalSite?.name || ''}
-        siteDomain={deleteModalSite?.domain || ''}
-        siteId={deleteModalSite?.id || ''}
-      />
-
       <DeleteSiteModal
         open={!!permanentDeleteSiteModal}
         onClose={() => setPermanentDeleteSiteModal(null)}