chore(umami): commit the 6 umami-removal edits left dirty after the earlier reset

These landing/legal/shared-utils edits are part of the umami decommission
(Umami → no-op / 'kein Web-Analytics', dated 2026-05-26) but were left
uncommitted in the working tree after the concurrent git-reset incident.
Pure rewording — no behaviour change, tracking was already dead.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/shared-utils/src/index.ts

@@ -26,5 +26,5 @@ export * from './cache';
 // Natural Language Parsers
 export * from './parsers';
 
-// Umami Analytics
+// Event-API (No-op — Web-Analytics entfernt 2026-05-26)
 export * from './analytics';

packages/shared-utils/src/web-vitals.ts

@@ -1,8 +1,10 @@
 /**
- * Web Vitals → Umami Integration
+ * Web Vitals tracking
  *
- * Tracks Core Web Vitals (LCP, CLS, INP) and additional metrics (FCP, TTFB)
- * as Umami events. Call `trackWebVitals()` once on app startup.
+ * Misst Core Web Vitals (LCP, CLS, INP) + FCP/TTFB und reicht sie an die
+ * `trackEvent`-API weiter. Hinweis: Web-Analytics-Versand ist entfernt
+ * (2026-05-26) → die Werte gehen aktuell in einen No-op.
+ * Call `trackWebVitals()` once on app startup.
  *
  * @example
  * ```typescript