fix(claims): purge false tier claims from landing, billing cards and legal docs

The false RBAC / 99.9 SLA / BYOC / custom-domain claims were not only on /pricing but also on the landing-page tier cards, the in-app billing upgrade cards, and — most seriously — the AGB and Terms as a binding 99.9 monthly uptime SLA the single-host infra cannot meet. Aligned all of them: SLA removed from AGB/Terms (best-effort, no guaranteed SLA for self-serve; Enterprise by contract); landing+billing cards now show Audit log, RBAC coming-soon, custom-domain coming-soon, honest Enterprise infra; landing Team price corrected 149->199; billing cards model name Haiku/Sonnet -> Claude AI. Privacy page intentionally keeps exact model names for data-residency disclosure.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/web/app/(marketing)/page.tsx

@@ -116,22 +116,22 @@ const TIERS = [
     features: [
       '5 servers',
       '1M calls/mo',
-      'Custom domain',
       'Priority build queue',
+      'Custom domain · soon',
       'Email support',
     ],
   },
   {
     name: 'Team',
-    price: '€149',
+    price: '€199',
     tag: '/ month',
-    features: ['25 servers', '10M calls/mo', 'RBAC + audit log', 'SLA 99.9%', 'Slack support'],
+    features: ['25 servers', '10M calls/mo', 'Audit log', 'RBAC · soon', 'Slack support'],
   },
   {
     name: 'Enterprise',
     price: '€499+',
     tag: '/ month',
-    features: ['Unlimited', 'BYOC', 'SSO / SAML', 'Dedicated cluster', 'Customer success'],
+    features: ['Unlimited', 'Custom infra · on request', 'SSO/SAML · on request', 'Dedicated hosting', 'Customer success'],
   },
 ];