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Two items flagged as blockers in PR #288 review: - Markus + Sara: "Mehr laden" calls GET /api/dashboard/activity?offset=N but the backend's DashboardController only accepts `limit` — `offset` was silently ignored, and every click re-fetched the same top-40 rows. Rather than add backend offset/cursor support in this PR (scope creep), remove the Load-more UI and defer pagination to a follow-up issue. 40 items covers the default case; the feature can come back with proper backend support and its own tests. - Markus + Sara: ?/dismiss and ?/mark-all form actions were dead code — the UI calls `onMarkRead` / `onMarkAllRead` callbacks (→ singleton → raw PATCH) and never submits either form. Delete both actions and their tests. Using the form-action path would require deprecating the NotificationBell's raw-PATCH as well — that's tracked separately as #286. The Dismiss markup split from the previous commit stands on its own. Part of #285, address PR #288 review. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>