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All under src/lib/components/chronik/: - ChronikRow.svelte — single orchestrator for four variants (comment / for-you / rollup / simple), discriminated via $derived. Outer <a> wraps avatar + body + time; document title is a styled <span> (no nested anchors). Rollup shows count badge + en-dash time range; for-you gets accent left border + @ marker hidden below sm:. - ChronikTimeline.svelte — buckets items by day using bucketByDay() and renders Heute/Gestern/Diese Woche/Älter section headers with <span> trailing rule. - ChronikFuerDichBox.svelte — unread mentions card with inbox-zero variant, per-row Dismiss button (prevents bubbling, calls onMarkRead), aria-live count badge, and a .fade-in class gated by prefers-reduced-motion. - ChronikFilterPills.svelte — role=radiogroup with 5 pills, ArrowLeft/Right keyboard navigation wrapping across the group, single tabstop via dynamic tabindex. - ChronikEmptyState.svelte — three variants (first-run / filter-empty / inbox-zero) sharing a centered-column layout. - ChronikErrorCard.svelte — warning card with retry button, optional custom message override. Verbs map to chronik_singleton_* / chronik_rollup_* per AuditKind so no ICU pluralization is needed. Comment preview is a TODO placeholder (currently the document title) pending a backend preview DTO follow-up. All 40 unit tests green. No type-check or lint errors in these files. Part of #285. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>