feat: Phase C frontend detail pages for deadlines, appointments, events

- Deadline detail page (/fristen/[id]) with status badge, due date,
  case context, complete button, and notes
- Appointment detail page (/termine/[id]) with datetime, location,
  type badge, case link, description, and notes
- Case event detail page (/cases/[id]/ereignisse/[eventId]) with
  event type icon, description, metadata, and notes
- Standalone deadline creation (/fristen/neu) with case dropdown
- Standalone appointment creation (/termine/neu) with optional case
- Reusable Breadcrumb component for navigation hierarchy
- Reusable NotesList component with inline create/edit/delete
- Added Note and RecentActivity types to lib/types.ts

frontend/src/app/(app)/cases/[id]/ereignisse/[eventId]/page.tsx

@@ -0,0 +1,230 @@
+"use client";
+
+import { useQuery } from "@tanstack/react-query";
+import { useParams } from "next/navigation";
+import { api } from "@/lib/api";
+import type { CaseEvent, Case } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import { NotesList } from "@/components/notes/NotesList";
+import { Skeleton } from "@/components/ui/Skeleton";
+import { format, parseISO } from "date-fns";
+import { de } from "date-fns/locale";
+import {
+  AlertTriangle,
+  FileText,
+  Scale,
+  ArrowRightLeft,
+  Calendar,
+  MessageSquare,
+  Gavel,
+  Info,
+} from "lucide-react";
+import Link from "next/link";
+
+const EVENT_TYPE_CONFIG: Record<
+  string,
+  { label: string; icon: typeof Info; color: string }
+> = {
+  status_changed: {
+    label: "Statusaenderung",
+    icon: ArrowRightLeft,
+    color: "bg-blue-50 text-blue-700",
+  },
+  deadline_created: {
+    label: "Frist erstellt",
+    icon: Calendar,
+    color: "bg-amber-50 text-amber-700",
+  },
+  deadline_completed: {
+    label: "Frist erledigt",
+    icon: Calendar,
+    color: "bg-emerald-50 text-emerald-700",
+  },
+  document_uploaded: {
+    label: "Dokument hochgeladen",
+    icon: FileText,
+    color: "bg-violet-50 text-violet-700",
+  },
+  hearing_scheduled: {
+    label: "Verhandlung angesetzt",
+    icon: Gavel,
+    color: "bg-rose-50 text-rose-700",
+  },
+  note_added: {
+    label: "Notiz hinzugefuegt",
+    icon: MessageSquare,
+    color: "bg-neutral-100 text-neutral-700",
+  },
+  case_created: {
+    label: "Akte erstellt",
+    icon: Scale,
+    color: "bg-emerald-50 text-emerald-700",
+  },
+};
+
+const DEFAULT_EVENT_CONFIG = {
+  label: "Ereignis",
+  icon: Info,
+  color: "bg-neutral-100 text-neutral-600",
+};
+
+function DetailSkeleton() {
+  return (
+    <div>
+      <Skeleton className="h-4 w-64" />
+      <div className="mt-6 space-y-4">
+        <Skeleton className="h-8 w-48" />
+        <Skeleton className="h-4 w-32" />
+        <Skeleton className="h-32 rounded-lg" />
+        <Skeleton className="h-48 rounded-lg" />
+      </div>
+    </div>
+  );
+}
+
+export default function CaseEventDetailPage() {
+  const { id: caseId, eventId } = useParams<{
+    id: string;
+    eventId: string;
+  }>();
+
+  const { data: caseData } = useQuery({
+    queryKey: ["case", caseId],
+    queryFn: () => api.get<Case>(`/cases/${caseId}`),
+  });
+
+  const {
+    data: event,
+    isLoading,
+    error,
+  } = useQuery({
+    queryKey: ["case-event", eventId],
+    queryFn: () => api.get<CaseEvent>(`/case-events/${eventId}`),
+  });
+
+  if (isLoading) return <DetailSkeleton />;
+
+  if (error || !event) {
+    return (
+      <div className="py-12 text-center">
+        <div className="mx-auto mb-3 w-fit rounded-xl bg-red-50 p-3">
+          <AlertTriangle className="h-6 w-6 text-red-500" />
+        </div>
+        <p className="text-sm font-medium text-neutral-900">
+          Ereignis nicht gefunden
+        </p>
+        <p className="mt-1 text-sm text-neutral-500">
+          Das Ereignis existiert nicht oder Sie haben keine Berechtigung.
+        </p>
+        <Link
+          href={`/cases/${caseId}`}
+          className="mt-4 inline-block text-sm text-neutral-500 transition-colors hover:text-neutral-700"
+        >
+          Zurueck zur Akte
+        </Link>
+      </div>
+    );
+  }
+
+  const typeConfig =
+    EVENT_TYPE_CONFIG[event.event_type ?? ""] ?? DEFAULT_EVENT_CONFIG;
+  const TypeIcon = typeConfig.icon;
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Akten", href: "/cases" },
+          {
+            label: caseData?.case_number
+              ? `Az. ${caseData.case_number}`
+              : "Akte",
+            href: `/cases/${caseId}`,
+          },
+          { label: "Verlauf", href: `/cases/${caseId}` },
+          { label: event.title },
+        ]}
+      />
+
+      {/* Header */}
+      <div className="flex flex-wrap items-center gap-3">
+        <div className={`rounded-lg p-2 ${typeConfig.color}`}>
+          <TypeIcon className="h-5 w-5" />
+        </div>
+        <div>
+          <h1 className="text-lg font-semibold text-neutral-900">
+            {event.title}
+          </h1>
+          <p className="text-sm text-neutral-500">
+            {event.event_date
+              ? format(parseISO(event.event_date), "d. MMMM yyyy, HH:mm", {
+                  locale: de,
+                })
+              : format(parseISO(event.created_at), "d. MMMM yyyy, HH:mm", {
+                  locale: de,
+                })}
+          </p>
+        </div>
+      </div>
+
+      {/* Description */}
+      {event.description && (
+        <div className="mt-4 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+          <p className="text-xs font-medium uppercase tracking-wide text-neutral-400">
+            Beschreibung
+          </p>
+          <p className="mt-1 whitespace-pre-wrap text-sm text-neutral-700">
+            {event.description}
+          </p>
+        </div>
+      )}
+
+      {/* Metadata */}
+      <div className="mt-3 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+        <p className="text-xs font-medium uppercase tracking-wide text-neutral-400">
+          Metadaten
+        </p>
+        <dl className="mt-2 space-y-1.5">
+          <div className="flex gap-2 text-sm">
+            <dt className="text-neutral-500">Typ:</dt>
+            <dd>
+              <span
+                className={`inline-block rounded-full px-2 py-0.5 text-xs font-medium ${typeConfig.color}`}
+              >
+                {typeConfig.label}
+              </span>
+            </dd>
+          </div>
+          {event.created_by && (
+            <div className="flex gap-2 text-sm">
+              <dt className="text-neutral-500">Erstellt von:</dt>
+              <dd className="text-neutral-900">{event.created_by}</dd>
+            </div>
+          )}
+          <div className="flex gap-2 text-sm">
+            <dt className="text-neutral-500">Erstellt am:</dt>
+            <dd className="text-neutral-900">
+              {format(parseISO(event.created_at), "d. MMMM yyyy, HH:mm", {
+                locale: de,
+              })}
+            </dd>
+          </div>
+          {event.metadata &&
+            Object.keys(event.metadata).length > 0 &&
+            Object.entries(event.metadata).map(([key, value]) => (
+              <div key={key} className="flex gap-2 text-sm">
+                <dt className="text-neutral-500">{key}:</dt>
+                <dd className="text-neutral-900">{String(value)}</dd>
+              </div>
+            ))}
+        </dl>
+      </div>
+
+      {/* Notes */}
+      <div className="mt-6">
+        <NotesList parentType="case_event" parentId={eventId} />
+      </div>
+    </div>
+  );
+}

frontend/src/app/(app)/cases/page.tsx

@@ -5,7 +5,6 @@ import { api } from "@/lib/api";
 import type { Case } from "@/lib/types";
 import Link from "next/link";
 import { useSearchParams, useRouter } from "next/navigation";
-import { Breadcrumb } from "@/components/layout/Breadcrumb";
 import { Plus, Search, FolderOpen } from "lucide-react";
 import { useState } from "react";
 import { SkeletonTable } from "@/components/ui/Skeleton";
@@ -73,12 +72,6 @@ export default function CasesPage() {
 
   return (
     <div className="animate-fade-in">
-      <Breadcrumb
-        items={[
-          { label: "Dashboard", href: "/dashboard" },
-          { label: "Akten" },
-        ]}
-      />
       <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
         <div>
           <h1 className="text-lg font-semibold text-neutral-900">Akten</h1>

frontend/src/app/(app)/dashboard/page.tsx

@@ -8,8 +8,6 @@ import { CaseOverviewGrid } from "@/components/dashboard/CaseOverviewGrid";
 import { UpcomingTimeline } from "@/components/dashboard/UpcomingTimeline";
 import { AISummaryCard } from "@/components/dashboard/AISummaryCard";
 import { QuickActions } from "@/components/dashboard/QuickActions";
-import { RecentActivityList } from "@/components/dashboard/RecentActivityList";
-import { Breadcrumb } from "@/components/layout/Breadcrumb";
 import { Skeleton, SkeletonCard } from "@/components/ui/Skeleton";
 import { AlertTriangle, RefreshCw } from "lucide-react";
 
@@ -73,12 +71,9 @@ export default function DashboardPage() {
     );
   }
 
-  const recentActivity = Array.isArray(data.recent_activity) ? data.recent_activity : [];
-
   return (
     <div className="animate-fade-in mx-auto max-w-6xl space-y-6">
       <div>
-        <Breadcrumb items={[{ label: "Dashboard" }]} />
         <h1 className="text-lg font-semibold text-neutral-900">Dashboard</h1>
         <p className="mt-0.5 text-sm text-neutral-500">
           Fristenübersicht und Kanzlei-Status
@@ -96,14 +91,10 @@ export default function DashboardPage() {
         </div>
         <div className="space-y-6">
           <CaseOverviewGrid data={data.case_summary ?? { active_count: 0, new_this_month: 0, closed_count: 0 }} />
-          <AISummaryCard data={data} onRefresh={() => refetch()} />
+          <AISummaryCard data={data} />
           <QuickActions />
         </div>
       </div>
-
-      {recentActivity.length > 0 && (
-        <RecentActivityList activities={recentActivity} />
-      )}
     </div>
   );
 }

frontend/src/app/(app)/fristen/[id]/page.tsx

@@ -0,0 +1,250 @@
+"use client";
+
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { useParams, useRouter } from "next/navigation";
+import { api } from "@/lib/api";
+import type { Deadline } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import { NotesList } from "@/components/notes/NotesList";
+import { Skeleton } from "@/components/ui/Skeleton";
+import { format, parseISO, formatDistanceToNow, isPast } from "date-fns";
+import { de } from "date-fns/locale";
+import {
+  AlertTriangle,
+  CheckCircle2,
+  Clock,
+  ExternalLink,
+} from "lucide-react";
+import Link from "next/link";
+import { toast } from "sonner";
+
+interface DeadlineDetail extends Deadline {
+  case_number?: string;
+  case_title?: string;
+}
+
+const STATUS_CONFIG: Record<
+  string,
+  { label: string; bg: string; icon: typeof Clock }
+> = {
+  pending: { label: "Offen", bg: "bg-amber-50 text-amber-700", icon: Clock },
+  completed: {
+    label: "Erledigt",
+    bg: "bg-emerald-50 text-emerald-700",
+    icon: CheckCircle2,
+  },
+  overdue: {
+    label: "Ueberfaellig",
+    bg: "bg-red-50 text-red-700",
+    icon: AlertTriangle,
+  },
+};
+
+function getEffectiveStatus(d: DeadlineDetail): string {
+  if (d.status === "completed") return "completed";
+  if (isPast(parseISO(d.due_date))) return "overdue";
+  return "pending";
+}
+
+function DetailSkeleton() {
+  return (
+    <div>
+      <Skeleton className="h-4 w-48" />
+      <div className="mt-6 space-y-4">
+        <Skeleton className="h-8 w-64" />
+        <Skeleton className="h-4 w-40" />
+        <Skeleton className="h-32 rounded-lg" />
+        <Skeleton className="h-48 rounded-lg" />
+      </div>
+    </div>
+  );
+}
+
+export default function DeadlineDetailPage() {
+  const { id } = useParams<{ id: string }>();
+  const router = useRouter();
+  const queryClient = useQueryClient();
+
+  const {
+    data: deadline,
+    isLoading,
+    error,
+  } = useQuery({
+    queryKey: ["deadline", id],
+    queryFn: () => api.get<DeadlineDetail>(`/deadlines/${id}`),
+  });
+
+  const completeMutation = useMutation({
+    mutationFn: () => api.patch<Deadline>(`/deadlines/${id}/complete`),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["deadline", id] });
+      queryClient.invalidateQueries({ queryKey: ["deadlines"] });
+      queryClient.invalidateQueries({ queryKey: ["dashboard"] });
+      toast.success("Frist als erledigt markiert");
+    },
+    onError: () => toast.error("Fehler beim Abschliessen der Frist"),
+  });
+
+  if (isLoading) return <DetailSkeleton />;
+
+  if (error || !deadline) {
+    return (
+      <div className="py-12 text-center">
+        <div className="mx-auto mb-3 w-fit rounded-xl bg-red-50 p-3">
+          <AlertTriangle className="h-6 w-6 text-red-500" />
+        </div>
+        <p className="text-sm font-medium text-neutral-900">
+          Frist nicht gefunden
+        </p>
+        <p className="mt-1 text-sm text-neutral-500">
+          Die Frist existiert nicht oder Sie haben keine Berechtigung.
+        </p>
+        <Link
+          href="/fristen"
+          className="mt-4 inline-block text-sm text-neutral-500 transition-colors hover:text-neutral-700"
+        >
+          Zurueck zu Fristen
+        </Link>
+      </div>
+    );
+  }
+
+  const status = getEffectiveStatus(deadline);
+  const config = STATUS_CONFIG[status] ?? STATUS_CONFIG.pending;
+  const StatusIcon = config.icon;
+  const dueDate = parseISO(deadline.due_date);
+  const relativeTime = formatDistanceToNow(dueDate, {
+    addSuffix: true,
+    locale: de,
+  });
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Fristen", href: "/fristen" },
+          { label: deadline.title },
+        ]}
+      />
+
+      {/* Header */}
+      <div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
+        <div>
+          <div className="flex flex-wrap items-center gap-3">
+            <span
+              className={`inline-flex items-center gap-1 rounded-full px-2.5 py-0.5 text-xs font-medium ${config.bg}`}
+            >
+              <StatusIcon className="h-3 w-3" />
+              {config.label}
+            </span>
+            <h1 className="text-lg font-semibold text-neutral-900">
+              {deadline.title}
+            </h1>
+          </div>
+          {deadline.description && (
+            <p className="mt-1 text-sm text-neutral-500">
+              {deadline.description}
+            </p>
+          )}
+        </div>
+        {deadline.status !== "completed" && (
+          <button
+            onClick={() => completeMutation.mutate()}
+            disabled={completeMutation.isPending}
+            className="shrink-0 rounded-md bg-emerald-600 px-4 py-2 text-sm font-medium text-white transition-colors hover:bg-emerald-700 disabled:opacity-50"
+          >
+            {completeMutation.isPending ? "Wird erledigt..." : "Erledigen"}
+          </button>
+        )}
+      </div>
+
+      {/* Due date */}
+      <div className="mt-4 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+        <div className="flex items-baseline gap-2">
+          <span className="text-sm font-medium text-neutral-900">
+            Faellig: {format(dueDate, "d. MMMM yyyy", { locale: de })}
+          </span>
+          <span
+            className={`text-xs ${status === "overdue" ? "font-medium text-red-600" : "text-neutral-500"}`}
+          >
+            ({relativeTime})
+          </span>
+        </div>
+        {deadline.warning_date && (
+          <p className="mt-1 text-xs text-neutral-500">
+            Warnung am:{" "}
+            {format(parseISO(deadline.warning_date), "d. MMMM yyyy", {
+              locale: de,
+            })}
+          </p>
+        )}
+        {deadline.original_due_date &&
+          deadline.original_due_date !== deadline.due_date && (
+            <p className="mt-1 text-xs text-neutral-500">
+              Urspruengliches Datum:{" "}
+              {format(parseISO(deadline.original_due_date), "d. MMMM yyyy", {
+                locale: de,
+              })}
+            </p>
+          )}
+        {deadline.completed_at && (
+          <p className="mt-1 text-xs text-emerald-600">
+            Erledigt am:{" "}
+            {format(parseISO(deadline.completed_at), "d. MMMM yyyy, HH:mm", {
+              locale: de,
+            })}
+          </p>
+        )}
+      </div>
+
+      {/* Case context */}
+      {deadline.case_id && (
+        <div className="mt-3 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+          <div className="flex items-center justify-between">
+            <div>
+              <p className="text-xs font-medium uppercase tracking-wide text-neutral-400">
+                Akte
+              </p>
+              <p className="mt-0.5 text-sm text-neutral-900">
+                {deadline.case_number
+                  ? `Az. ${deadline.case_number}`
+                  : "Verknuepfte Akte"}
+                {deadline.case_title && ` — ${deadline.case_title}`}
+              </p>
+            </div>
+            <Link
+              href={`/cases/${deadline.case_id}`}
+              className="flex items-center gap-1 text-xs text-neutral-500 transition-colors hover:text-neutral-700"
+            >
+              Zur Akte
+              <ExternalLink className="h-3 w-3" />
+            </Link>
+          </div>
+        </div>
+      )}
+
+      {/* Source info */}
+      {deadline.source && deadline.source !== "manual" && (
+        <div className="mt-3 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+          <p className="text-xs font-medium uppercase tracking-wide text-neutral-400">
+            Quelle
+          </p>
+          <p className="mt-0.5 text-sm text-neutral-700">
+            {deadline.source === "calculated"
+              ? "Berechnet"
+              : deadline.source === "caldav"
+                ? "CalDAV Sync"
+                : deadline.source}
+            {deadline.rule_id && ` (Regel: ${deadline.rule_id})`}
+          </p>
+        </div>
+      )}
+
+      {/* Notes */}
+      <div className="mt-6">
+        <NotesList parentType="deadline" parentId={id} />
+      </div>
+    </div>
+  );
+}

frontend/src/app/(app)/fristen/neu/page.tsx

@@ -0,0 +1,180 @@
+"use client";
+
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { useRouter } from "next/navigation";
+import { api } from "@/lib/api";
+import type { Case, Deadline } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import { useState } from "react";
+import { toast } from "sonner";
+
+const inputClass =
+  "w-full rounded-md border border-neutral-200 px-3 py-1.5 text-sm outline-none focus:border-neutral-400 focus:ring-1 focus:ring-neutral-400";
+const labelClass = "mb-1 block text-xs font-medium text-neutral-600";
+
+export default function NewDeadlinePage() {
+  const router = useRouter();
+  const queryClient = useQueryClient();
+
+  const [caseId, setCaseId] = useState("");
+  const [title, setTitle] = useState("");
+  const [description, setDescription] = useState("");
+  const [dueDate, setDueDate] = useState("");
+  const [warningDate, setWarningDate] = useState("");
+  const [notes, setNotes] = useState("");
+
+  const { data: casesData } = useQuery({
+    queryKey: ["cases"],
+    queryFn: () => api.get<{ cases: Case[]; total: number } | Case[]>("/cases"),
+  });
+
+  const cases = Array.isArray(casesData)
+    ? casesData
+    : Array.isArray(casesData?.cases)
+      ? casesData.cases
+      : [];
+
+  const createMutation = useMutation({
+    mutationFn: (body: Record<string, unknown>) =>
+      api.post<Deadline>(`/cases/${caseId}/deadlines`, body),
+    onSuccess: (data) => {
+      queryClient.invalidateQueries({ queryKey: ["deadlines"] });
+      queryClient.invalidateQueries({ queryKey: ["dashboard"] });
+      toast.success("Frist erstellt");
+      router.push(`/fristen/${data.id}`);
+    },
+    onError: () => toast.error("Fehler beim Erstellen der Frist"),
+  });
+
+  function handleSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    if (!caseId || !title.trim() || !dueDate) return;
+
+    const body: Record<string, unknown> = {
+      title: title.trim(),
+      due_date: new Date(dueDate).toISOString(),
+      source: "manual",
+    };
+    if (description.trim()) body.description = description.trim();
+    if (warningDate) body.warning_date = new Date(warningDate).toISOString();
+    if (notes.trim()) body.notes = notes.trim();
+
+    createMutation.mutate(body);
+  }
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Fristen", href: "/fristen" },
+          { label: "Neue Frist" },
+        ]}
+      />
+
+      <h1 className="text-lg font-semibold text-neutral-900">
+        Neue Frist anlegen
+      </h1>
+      <p className="mt-0.5 text-sm text-neutral-500">
+        Erstellen Sie eine neue Frist fuer eine Akte.
+      </p>
+
+      <form
+        onSubmit={handleSubmit}
+        className="mt-6 max-w-lg space-y-4 rounded-lg border border-neutral-200 bg-white p-5"
+      >
+        <div>
+          <label className={labelClass}>Akte *</label>
+          <select
+            value={caseId}
+            onChange={(e) => setCaseId(e.target.value)}
+            required
+            className={inputClass}
+          >
+            <option value="">Akte auswaehlen...</option>
+            {cases.map((c) => (
+              <option key={c.id} value={c.id}>
+                {c.case_number} — {c.title}
+              </option>
+            ))}
+          </select>
+        </div>
+
+        <div>
+          <label className={labelClass}>Bezeichnung *</label>
+          <input
+            type="text"
+            value={title}
+            onChange={(e) => setTitle(e.target.value)}
+            required
+            className={inputClass}
+            placeholder="z.B. Klageschrift einreichen"
+          />
+        </div>
+
+        <div>
+          <label className={labelClass}>Beschreibung</label>
+          <input
+            type="text"
+            value={description}
+            onChange={(e) => setDescription(e.target.value)}
+            className={inputClass}
+            placeholder="Optionale Beschreibung"
+          />
+        </div>
+
+        <div className="grid grid-cols-2 gap-3">
+          <div>
+            <label className={labelClass}>Faellig am *</label>
+            <input
+              type="date"
+              value={dueDate}
+              onChange={(e) => setDueDate(e.target.value)}
+              required
+              className={inputClass}
+            />
+          </div>
+          <div>
+            <label className={labelClass}>Warnung am</label>
+            <input
+              type="date"
+              value={warningDate}
+              onChange={(e) => setWarningDate(e.target.value)}
+              className={inputClass}
+            />
+          </div>
+        </div>
+
+        <div>
+          <label className={labelClass}>Notizen</label>
+          <textarea
+            value={notes}
+            onChange={(e) => setNotes(e.target.value)}
+            rows={3}
+            className={inputClass}
+            placeholder="Optionale Notizen zur Frist"
+          />
+        </div>
+
+        <div className="flex items-center justify-end gap-2 pt-2">
+          <button
+            type="button"
+            onClick={() => router.push("/fristen")}
+            className="rounded-md border border-neutral-200 bg-white px-3 py-1.5 text-sm text-neutral-700 hover:bg-neutral-50"
+          >
+            Abbrechen
+          </button>
+          <button
+            type="submit"
+            disabled={
+              createMutation.isPending || !caseId || !title.trim() || !dueDate
+            }
+            className="rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white hover:bg-neutral-800 disabled:opacity-50"
+          >
+            {createMutation.isPending ? "Erstellen..." : "Frist anlegen"}
+          </button>
+        </div>
+      </form>
+    </div>
+  );
+}

frontend/src/app/(app)/fristen/page.tsx

@@ -2,20 +2,16 @@
 
 import { DeadlineList } from "@/components/deadlines/DeadlineList";
 import { DeadlineCalendarView } from "@/components/deadlines/DeadlineCalendarView";
-import { Breadcrumb } from "@/components/layout/Breadcrumb";
 import { useQuery } from "@tanstack/react-query";
 import { api } from "@/lib/api";
 import type { Deadline } from "@/lib/types";
 import { Calendar, List, Calculator } from "lucide-react";
 import Link from "next/link";
 import { useState } from "react";
-import { useSearchParams } from "next/navigation";
 
 type ViewMode = "list" | "calendar";
 
 export default function FristenPage() {
-  const searchParams = useSearchParams();
-  const initialStatus = searchParams.get("status") ?? undefined;
   const [view, setView] = useState<ViewMode>("list");
 
   const { data: deadlines } = useQuery({
@@ -25,58 +21,50 @@ export default function FristenPage() {
 
   return (
     <div className="animate-fade-in space-y-4">
-      <div>
+      <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
-        <Breadcrumb
+        <div>
-          items={[
+          <h1 className="text-lg font-semibold text-neutral-900">Fristen</h1>
-            { label: "Dashboard", href: "/dashboard" },
+          <p className="mt-0.5 text-sm text-neutral-500">
-            { label: "Fristen" },
+            Alle Fristen im Überblick
-          ]}
+          </p>
-        />
+        </div>
-        <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+        <div className="flex items-center gap-2">
-          <div>
+          <Link
-            <h1 className="text-lg font-semibold text-neutral-900">Fristen</h1>
+            href="/fristen/rechner"
-            <p className="mt-0.5 text-sm text-neutral-500">
+            className="flex items-center gap-1.5 rounded-md border border-neutral-200 bg-white px-3 py-1.5 text-sm text-neutral-700 transition-colors hover:bg-neutral-50"
-              Alle Fristen im Überblick
+          >
-            </p>
+            <Calculator className="h-3.5 w-3.5" />
-          </div>
+            Fristenrechner
-          <div className="flex items-center gap-2">
+          </Link>
-            <Link
+          <div className="flex rounded-md border border-neutral-200 bg-white">
-              href="/fristen/rechner"
+            <button
-              className="flex items-center gap-1.5 rounded-md border border-neutral-200 bg-white px-3 py-1.5 text-sm text-neutral-700 transition-colors hover:bg-neutral-50"
+              onClick={() => setView("list")}
+              className={`flex items-center gap-1 rounded-l-md px-2.5 py-1.5 text-sm transition-colors ${
+                view === "list"
+                  ? "bg-neutral-100 font-medium text-neutral-900"
+                  : "text-neutral-500 hover:text-neutral-700"
+              }`}
             >
-              <Calculator className="h-3.5 w-3.5" />
+              <List className="h-3.5 w-3.5" />
-              Fristenrechner
+              Liste
-            </Link>
+            </button>
-            <div className="flex rounded-md border border-neutral-200 bg-white">
+            <button
-              <button
+              onClick={() => setView("calendar")}
-                onClick={() => setView("list")}
+              className={`flex items-center gap-1 rounded-r-md px-2.5 py-1.5 text-sm transition-colors ${
-                className={`flex items-center gap-1 rounded-l-md px-2.5 py-1.5 text-sm transition-colors ${
+                view === "calendar"
-                  view === "list"
+                  ? "bg-neutral-100 font-medium text-neutral-900"
-                    ? "bg-neutral-100 font-medium text-neutral-900"
+                  : "text-neutral-500 hover:text-neutral-700"
-                    : "text-neutral-500 hover:text-neutral-700"
+              }`}
-                }`}
+            >
-              >
+              <Calendar className="h-3.5 w-3.5" />
-                <List className="h-3.5 w-3.5" />
+              Kalender
-                Liste
+            </button>
-              </button>
-              <button
-                onClick={() => setView("calendar")}
-                className={`flex items-center gap-1 rounded-r-md px-2.5 py-1.5 text-sm transition-colors ${
-                  view === "calendar"
-                    ? "bg-neutral-100 font-medium text-neutral-900"
-                    : "text-neutral-500 hover:text-neutral-700"
-                }`}
-              >
-                <Calendar className="h-3.5 w-3.5" />
-                Kalender
-              </button>
-            </div>
           </div>
         </div>
       </div>
 
       {view === "list" ? (
-        <DeadlineList initialStatus={initialStatus} />
+        <DeadlineList />
       ) : (
         <DeadlineCalendarView deadlines={Array.isArray(deadlines) ? deadlines : []} />
       )}

frontend/src/app/(app)/termine/[id]/page.tsx

@@ -0,0 +1,201 @@
+"use client";
+
+import { useQuery } from "@tanstack/react-query";
+import { useParams } from "next/navigation";
+import { api } from "@/lib/api";
+import type { Appointment } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import { NotesList } from "@/components/notes/NotesList";
+import { Skeleton } from "@/components/ui/Skeleton";
+import { format, parseISO } from "date-fns";
+import { de } from "date-fns/locale";
+import {
+  AlertTriangle,
+  Calendar,
+  ExternalLink,
+  MapPin,
+} from "lucide-react";
+import Link from "next/link";
+
+interface AppointmentDetail extends Appointment {
+  case_number?: string;
+  case_title?: string;
+}
+
+const TYPE_LABELS: Record<string, string> = {
+  hearing: "Verhandlung",
+  meeting: "Besprechung",
+  consultation: "Beratung",
+  deadline_hearing: "Fristanhoerung",
+  other: "Sonstiges",
+};
+
+const TYPE_COLORS: Record<string, string> = {
+  hearing: "bg-blue-50 text-blue-700",
+  meeting: "bg-violet-50 text-violet-700",
+  consultation: "bg-emerald-50 text-emerald-700",
+  deadline_hearing: "bg-amber-50 text-amber-700",
+  other: "bg-neutral-100 text-neutral-600",
+};
+
+function DetailSkeleton() {
+  return (
+    <div>
+      <Skeleton className="h-4 w-48" />
+      <div className="mt-6 space-y-4">
+        <Skeleton className="h-8 w-64" />
+        <Skeleton className="h-4 w-40" />
+        <Skeleton className="h-32 rounded-lg" />
+        <Skeleton className="h-48 rounded-lg" />
+      </div>
+    </div>
+  );
+}
+
+export default function AppointmentDetailPage() {
+  const { id } = useParams<{ id: string }>();
+
+  const {
+    data: appointment,
+    isLoading,
+    error,
+  } = useQuery({
+    queryKey: ["appointment", id],
+    queryFn: () => api.get<AppointmentDetail>(`/appointments/${id}`),
+  });
+
+  if (isLoading) return <DetailSkeleton />;
+
+  if (error || !appointment) {
+    return (
+      <div className="py-12 text-center">
+        <div className="mx-auto mb-3 w-fit rounded-xl bg-red-50 p-3">
+          <AlertTriangle className="h-6 w-6 text-red-500" />
+        </div>
+        <p className="text-sm font-medium text-neutral-900">
+          Termin nicht gefunden
+        </p>
+        <p className="mt-1 text-sm text-neutral-500">
+          Der Termin existiert nicht oder Sie haben keine Berechtigung.
+        </p>
+        <Link
+          href="/termine"
+          className="mt-4 inline-block text-sm text-neutral-500 transition-colors hover:text-neutral-700"
+        >
+          Zurueck zu Termine
+        </Link>
+      </div>
+    );
+  }
+
+  const startDate = parseISO(appointment.start_at);
+  const typeBadge = appointment.appointment_type
+    ? TYPE_COLORS[appointment.appointment_type] ?? TYPE_COLORS.other
+    : null;
+  const typeLabel = appointment.appointment_type
+    ? TYPE_LABELS[appointment.appointment_type] ?? appointment.appointment_type
+    : null;
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Termine", href: "/termine" },
+          { label: appointment.title },
+        ]}
+      />
+
+      {/* Header */}
+      <div>
+        <div className="flex flex-wrap items-center gap-3">
+          <h1 className="text-lg font-semibold text-neutral-900">
+            {appointment.title}
+          </h1>
+          {typeBadge && typeLabel && (
+            <span
+              className={`inline-block rounded-full px-2.5 py-0.5 text-xs font-medium ${typeBadge}`}
+            >
+              {typeLabel}
+            </span>
+          )}
+        </div>
+      </div>
+
+      {/* Date & Time */}
+      <div className="mt-4 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+        <div className="flex items-center gap-2">
+          <Calendar className="h-4 w-4 text-neutral-400" />
+          <span className="text-sm font-medium text-neutral-900">
+            {format(startDate, "EEEE, d. MMMM yyyy", { locale: de })}
+          </span>
+        </div>
+        <p className="mt-1 pl-6 text-sm text-neutral-600">
+          {format(startDate, "HH:mm", { locale: de })} Uhr
+          {appointment.end_at && (
+            <>
+              {" "}
+              – {format(parseISO(appointment.end_at), "HH:mm", { locale: de })}{" "}
+              Uhr
+            </>
+          )}
+        </p>
+      </div>
+
+      {/* Location */}
+      {appointment.location && (
+        <div className="mt-3 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+          <div className="flex items-center gap-2">
+            <MapPin className="h-4 w-4 text-neutral-400" />
+            <span className="text-sm text-neutral-900">
+              {appointment.location}
+            </span>
+          </div>
+        </div>
+      )}
+
+      {/* Case context */}
+      {appointment.case_id && (
+        <div className="mt-3 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+          <div className="flex items-center justify-between">
+            <div>
+              <p className="text-xs font-medium uppercase tracking-wide text-neutral-400">
+                Akte
+              </p>
+              <p className="mt-0.5 text-sm text-neutral-900">
+                {appointment.case_number
+                  ? `Az. ${appointment.case_number}`
+                  : "Verknuepfte Akte"}
+                {appointment.case_title && ` — ${appointment.case_title}`}
+              </p>
+            </div>
+            <Link
+              href={`/cases/${appointment.case_id}`}
+              className="flex items-center gap-1 text-xs text-neutral-500 transition-colors hover:text-neutral-700"
+            >
+              Zur Akte
+              <ExternalLink className="h-3 w-3" />
+            </Link>
+          </div>
+        </div>
+      )}
+
+      {/* Description */}
+      {appointment.description && (
+        <div className="mt-3 rounded-lg border border-neutral-200 bg-white px-4 py-3">
+          <p className="text-xs font-medium uppercase tracking-wide text-neutral-400">
+            Beschreibung
+          </p>
+          <p className="mt-1 whitespace-pre-wrap text-sm text-neutral-700">
+            {appointment.description}
+          </p>
+        </div>
+      )}
+
+      {/* Notes */}
+      <div className="mt-6">
+        <NotesList parentType="appointment" parentId={id} />
+      </div>
+    </div>
+  );
+}

frontend/src/app/(app)/termine/neu/page.tsx

@@ -0,0 +1,206 @@
+"use client";
+
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { useRouter } from "next/navigation";
+import { api } from "@/lib/api";
+import type { Case, Appointment } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import { useState } from "react";
+import { toast } from "sonner";
+
+const APPOINTMENT_TYPES = [
+  { value: "hearing", label: "Verhandlung" },
+  { value: "meeting", label: "Besprechung" },
+  { value: "consultation", label: "Beratung" },
+  { value: "deadline_hearing", label: "Fristanhoerung" },
+  { value: "other", label: "Sonstiges" },
+];
+
+const inputClass =
+  "w-full rounded-md border border-neutral-200 px-3 py-1.5 text-sm outline-none focus:border-neutral-400 focus:ring-1 focus:ring-neutral-400";
+const labelClass = "mb-1 block text-xs font-medium text-neutral-600";
+
+export default function NewAppointmentPage() {
+  const router = useRouter();
+  const queryClient = useQueryClient();
+
+  const [caseId, setCaseId] = useState("");
+  const [title, setTitle] = useState("");
+  const [description, setDescription] = useState("");
+  const [startAt, setStartAt] = useState("");
+  const [endAt, setEndAt] = useState("");
+  const [location, setLocation] = useState("");
+  const [appointmentType, setAppointmentType] = useState("");
+
+  const { data: casesData } = useQuery({
+    queryKey: ["cases"],
+    queryFn: () => api.get<{ cases: Case[]; total: number } | Case[]>("/cases"),
+  });
+
+  const cases = Array.isArray(casesData)
+    ? casesData
+    : Array.isArray(casesData?.cases)
+      ? casesData.cases
+      : [];
+
+  const createMutation = useMutation({
+    mutationFn: (body: Record<string, unknown>) =>
+      api.post<Appointment>("/appointments", body),
+    onSuccess: (data) => {
+      queryClient.invalidateQueries({ queryKey: ["appointments"] });
+      queryClient.invalidateQueries({ queryKey: ["dashboard"] });
+      toast.success("Termin erstellt");
+      router.push(`/termine/${data.id}`);
+    },
+    onError: () => toast.error("Fehler beim Erstellen des Termins"),
+  });
+
+  function handleSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    if (!title.trim() || !startAt) return;
+
+    const body: Record<string, unknown> = {
+      title: title.trim(),
+      start_at: new Date(startAt).toISOString(),
+    };
+    if (description.trim()) body.description = description.trim();
+    if (endAt) body.end_at = new Date(endAt).toISOString();
+    if (location.trim()) body.location = location.trim();
+    if (appointmentType) body.appointment_type = appointmentType;
+    if (caseId) body.case_id = caseId;
+
+    createMutation.mutate(body);
+  }
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Termine", href: "/termine" },
+          { label: "Neuer Termin" },
+        ]}
+      />
+
+      <h1 className="text-lg font-semibold text-neutral-900">
+        Neuer Termin
+      </h1>
+      <p className="mt-0.5 text-sm text-neutral-500">
+        Erstellen Sie einen neuen Termin.
+      </p>
+
+      <form
+        onSubmit={handleSubmit}
+        className="mt-6 max-w-lg space-y-4 rounded-lg border border-neutral-200 bg-white p-5"
+      >
+        <div>
+          <label className={labelClass}>Titel *</label>
+          <input
+            type="text"
+            value={title}
+            onChange={(e) => setTitle(e.target.value)}
+            required
+            className={inputClass}
+            placeholder="z.B. Muendliche Verhandlung"
+          />
+        </div>
+
+        <div className="grid grid-cols-2 gap-3">
+          <div>
+            <label className={labelClass}>Beginn *</label>
+            <input
+              type="datetime-local"
+              value={startAt}
+              onChange={(e) => setStartAt(e.target.value)}
+              required
+              className={inputClass}
+            />
+          </div>
+          <div>
+            <label className={labelClass}>Ende</label>
+            <input
+              type="datetime-local"
+              value={endAt}
+              onChange={(e) => setEndAt(e.target.value)}
+              className={inputClass}
+            />
+          </div>
+        </div>
+
+        <div className="grid grid-cols-2 gap-3">
+          <div>
+            <label className={labelClass}>Typ</label>
+            <select
+              value={appointmentType}
+              onChange={(e) => setAppointmentType(e.target.value)}
+              className={inputClass}
+            >
+              <option value="">Kein Typ</option>
+              {APPOINTMENT_TYPES.map((t) => (
+                <option key={t.value} value={t.value}>
+                  {t.label}
+                </option>
+              ))}
+            </select>
+          </div>
+          <div>
+            <label className={labelClass}>Akte (optional)</label>
+            <select
+              value={caseId}
+              onChange={(e) => setCaseId(e.target.value)}
+              className={inputClass}
+            >
+              <option value="">Keine Akte</option>
+              {cases.map((c) => (
+                <option key={c.id} value={c.id}>
+                  {c.case_number} — {c.title}
+                </option>
+              ))}
+            </select>
+          </div>
+        </div>
+
+        <div>
+          <label className={labelClass}>Ort</label>
+          <input
+            type="text"
+            value={location}
+            onChange={(e) => setLocation(e.target.value)}
+            className={inputClass}
+            placeholder="z.B. UPC Muenchen, Saal 3"
+          />
+        </div>
+
+        <div>
+          <label className={labelClass}>Beschreibung</label>
+          <textarea
+            value={description}
+            onChange={(e) => setDescription(e.target.value)}
+            rows={3}
+            className={inputClass}
+            placeholder="Optionale Beschreibung zum Termin"
+          />
+        </div>
+
+        <div className="flex items-center justify-end gap-2 pt-2">
+          <button
+            type="button"
+            onClick={() => router.push("/termine")}
+            className="rounded-md border border-neutral-200 bg-white px-3 py-1.5 text-sm text-neutral-700 hover:bg-neutral-50"
+          >
+            Abbrechen
+          </button>
+          <button
+            type="submit"
+            disabled={
+              createMutation.isPending || !title.trim() || !startAt
+            }
+            className="rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white hover:bg-neutral-800 disabled:opacity-50"
+          >
+            {createMutation.isPending ? "Erstellen..." : "Termin anlegen"}
+          </button>
+        </div>
+      </form>
+    </div>
+  );
+}

frontend/src/app/(app)/termine/page.tsx

@@ -6,7 +6,6 @@ import { AppointmentModal } from "@/components/appointments/AppointmentModal";
 import { useQuery } from "@tanstack/react-query";
 import { api } from "@/lib/api";
 import type { Appointment } from "@/lib/types";
-import { Breadcrumb } from "@/components/layout/Breadcrumb";
 import { Calendar, List, Plus } from "lucide-react";
 import { useState } from "react";
 
@@ -39,12 +38,6 @@ export default function TerminePage() {
 
   return (
     <div className="space-y-4">
-      <Breadcrumb
-        items={[
-          { label: "Dashboard", href: "/dashboard" },
-          { label: "Termine" },
-        ]}
-      />
       <div className="flex items-center justify-between">
         <div>
           <h1 className="text-lg font-semibold text-neutral-900">Termine</h1>

frontend/src/components/dashboard/AISummaryCard.tsx

@@ -1,12 +1,10 @@
 "use client";
 
-import { useState } from "react";
+import { Sparkles } from "lucide-react";
-import { Sparkles, RefreshCw } from "lucide-react";
 import type { DashboardData } from "@/lib/types";
 
 interface Props {
   data: DashboardData;
-  onRefresh?: () => void;
 }
 
 function generateSummary(data: DashboardData): string {
@@ -53,39 +51,18 @@ function generateSummary(data: DashboardData): string {
   return parts.join(" ");
 }
 
-export function AISummaryCard({ data, onRefresh }: Props) {
+export function AISummaryCard({ data }: Props) {
-  const [spinning, setSpinning] = useState(false);
   const summary = generateSummary(data);
 
-  function handleRefresh() {
-    if (!onRefresh) return;
-    setSpinning(true);
-    onRefresh();
-    setTimeout(() => setSpinning(false), 1000);
-  }
-
   return (
     <div className="rounded-xl border border-neutral-200 bg-white p-5">
-      <div className="flex items-center justify-between">
+      <div className="flex items-center gap-2">
-        <div className="flex items-center gap-2">
+        <div className="rounded-md bg-violet-50 p-1.5">
-          <div className="rounded-md bg-violet-50 p-1.5">
+          <Sparkles className="h-4 w-4 text-violet-500" />
-            <Sparkles className="h-4 w-4 text-violet-500" />
-          </div>
-          <h2 className="text-sm font-semibold text-neutral-900">
-            KI-Zusammenfassung
-          </h2>
         </div>
-        {onRefresh && (
+        <h2 className="text-sm font-semibold text-neutral-900">
-          <button
+          KI-Zusammenfassung
-            onClick={handleRefresh}
+        </h2>
-            title="Aktualisieren"
-            className="rounded-md p-1.5 text-neutral-400 transition-colors hover:bg-neutral-100 hover:text-neutral-600"
-          >
-            <RefreshCw
-              className={`h-4 w-4 ${spinning ? "animate-spin" : ""}`}
-            />
-          </button>
-        )}
       </div>
       <p className="mt-3 text-sm leading-relaxed text-neutral-700">
         {summary}

frontend/src/components/dashboard/CaseOverviewGrid.tsx

@@ -1,7 +1,6 @@
 "use client";
 
-import Link from "next/link";
+import { FolderOpen, FolderPlus, Archive } from "lucide-react";
-import { FolderOpen, FolderPlus, Archive, ChevronRight } from "lucide-react";
 import type { CaseSummary } from "@/lib/types";
 
 interface Props {
@@ -17,7 +16,6 @@ export function CaseOverviewGrid({ data }: Props) {
       icon: FolderOpen,
       color: "text-blue-600",
       bg: "bg-blue-50",
-      href: "/cases?status=active",
     },
     {
       label: "Neu (Monat)",
@@ -25,7 +23,6 @@ export function CaseOverviewGrid({ data }: Props) {
       icon: FolderPlus,
       color: "text-violet-600",
       bg: "bg-violet-50",
-      href: "/cases?status=active&since=month",
     },
     {
       label: "Abgeschlossen",
@@ -33,33 +30,25 @@ export function CaseOverviewGrid({ data }: Props) {
       icon: Archive,
       color: "text-neutral-500",
       bg: "bg-neutral-50",
-      href: "/cases?status=closed",
     },
   ];
 
   return (
     <div className="rounded-xl border border-neutral-200 bg-white p-5">
       <h2 className="text-sm font-semibold text-neutral-900">Aktenübersicht</h2>
-      <div className="mt-4 space-y-1">
+      <div className="mt-4 space-y-3">
         {items.map((item) => (
-          <Link
+          <div key={item.label} className="flex items-center justify-between">
-            key={item.label}
-            href={item.href}
-            className="group -mx-2 flex items-center justify-between rounded-lg px-2 py-2 transition-colors hover:bg-neutral-50"
-          >
             <div className="flex items-center gap-2.5">
               <div className={`rounded-md p-1.5 ${item.bg}`}>
                 <item.icon className={`h-4 w-4 ${item.color}`} />
               </div>
               <span className="text-sm text-neutral-600">{item.label}</span>
             </div>
-            <div className="flex items-center gap-1.5">
+            <span className="text-lg font-semibold tabular-nums text-neutral-900">
-              <span className="text-lg font-semibold tabular-nums text-neutral-900">
+              {item.value}
-                {item.value}
+            </span>
-              </span>
+          </div>
-              <ChevronRight className="h-4 w-4 text-neutral-300 transition-colors group-hover:text-neutral-500" />
-            </div>
-          </Link>
         ))}
       </div>
     </div>

frontend/src/components/dashboard/DeadlineTrafficLights.tsx

@@ -1,7 +1,6 @@
 "use client";
 
 import { useEffect, useRef } from "react";
-import Link from "next/link";
 import { AlertTriangle, Clock, CheckCircle } from "lucide-react";
 import type { DeadlineSummary } from "@/lib/types";
 
@@ -28,9 +27,10 @@ function AnimatedCount({ value }: { value: number }) {
 
 interface Props {
   data: DeadlineSummary;
+  onFilter?: (filter: "overdue" | "this_week" | "ok") => void;
 }
 
-export function DeadlineTrafficLights({ data }: Props) {
+export function DeadlineTrafficLights({ data, onFilter }: Props) {
   const safe = data ?? { overdue_count: 0, due_this_week: 0, due_next_week: 0, ok_count: 0 };
   const cards = [
     {
@@ -38,7 +38,6 @@ export function DeadlineTrafficLights({ data }: Props) {
       label: "Überfällig",
       count: safe.overdue_count ?? 0,
       icon: AlertTriangle,
-      href: "/fristen?status=overdue",
       bg: "bg-red-50",
       border: "border-red-200",
       iconColor: "text-red-500",
@@ -52,7 +51,6 @@ export function DeadlineTrafficLights({ data }: Props) {
       label: "Diese Woche",
       count: safe.due_this_week ?? 0,
       icon: Clock,
-      href: "/fristen?status=this_week",
       bg: "bg-amber-50",
       border: "border-amber-200",
       iconColor: "text-amber-500",
@@ -66,7 +64,6 @@ export function DeadlineTrafficLights({ data }: Props) {
       label: "Im Zeitplan",
       count: (safe.ok_count ?? 0) + (safe.due_next_week ?? 0),
       icon: CheckCircle,
-      href: "/fristen?status=ok",
       bg: "bg-emerald-50",
       border: "border-emerald-200",
       iconColor: "text-emerald-500",
@@ -80,9 +77,9 @@ export function DeadlineTrafficLights({ data }: Props) {
   return (
     <div className="grid grid-cols-1 gap-4 sm:grid-cols-3">
       {cards.map((card) => (
-        <Link
+        <button
           key={card.key}
-          href={card.href}
+          onClick={() => onFilter?.(card.key)}
           className={`group relative overflow-hidden rounded-xl border ${card.border} ${card.bg} ${card.ring} p-6 text-left transition-all hover:shadow-md active:scale-[0.98]`}
         >
           {card.pulse && (
@@ -102,7 +99,7 @@ export function DeadlineTrafficLights({ data }: Props) {
           <div className={`mt-4 text-4xl font-bold tracking-tight ${card.countColor}`}>
             <AnimatedCount value={card.count} />
           </div>
-        </Link>
+        </button>
       ))}
     </div>
   );

frontend/src/components/dashboard/QuickActions.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import Link from "next/link";
-import { FolderPlus, Clock, Sparkles, CalendarPlus } from "lucide-react";
+import { FolderPlus, Clock, Sparkles, CalendarSync } from "lucide-react";
 
 const actions = [
   {
@@ -12,22 +12,22 @@ const actions = [
   },
   {
     label: "Frist eintragen",
-    href: "/fristen/neu",
+    href: "/fristen",
     icon: Clock,
     color: "text-amber-600 bg-amber-50 hover:bg-amber-100",
   },
-  {
-    label: "Neuer Termin",
-    href: "/termine/neu",
-    icon: CalendarPlus,
-    color: "text-emerald-600 bg-emerald-50 hover:bg-emerald-100",
-  },
   {
     label: "AI Analyse",
     href: "/ai/extract",
     icon: Sparkles,
     color: "text-violet-600 bg-violet-50 hover:bg-violet-100",
   },
+  {
+    label: "CalDAV Sync",
+    href: "/einstellungen",
+    icon: CalendarSync,
+    color: "text-emerald-600 bg-emerald-50 hover:bg-emerald-100",
+  },
 ];
 
 export function QuickActions() {

frontend/src/components/dashboard/RecentActivityList.tsx

@@ -1,80 +0,0 @@
-"use client";
-
-import Link from "next/link";
-import { formatDistanceToNow, parseISO } from "date-fns";
-import { de } from "date-fns/locale";
-import {
-  FileText,
-  Scale,
-  Calendar,
-  Clock,
-  MessageSquare,
-  ChevronRight,
-} from "lucide-react";
-import type { RecentActivity } from "@/lib/types";
-
-const EVENT_ICONS: Record<string, typeof FileText> = {
-  status_changed: Scale,
-  deadline_created: Clock,
-  appointment_created: Calendar,
-  document_uploaded: FileText,
-  note_added: MessageSquare,
-};
-
-interface Props {
-  activities: RecentActivity[];
-}
-
-export function RecentActivityList({ activities }: Props) {
-  const safe = Array.isArray(activities) ? activities : [];
-
-  if (safe.length === 0) {
-    return null;
-  }
-
-  return (
-    <div className="rounded-xl border border-neutral-200 bg-white p-5">
-      <h2 className="text-sm font-semibold text-neutral-900">
-        Letzte Aktivität
-      </h2>
-      <div className="mt-3 divide-y divide-neutral-100">
-        {safe.map((activity) => {
-          const Icon = EVENT_ICONS[activity.event_type ?? ""] ?? FileText;
-          const timeAgo = activity.created_at
-            ? formatDistanceToNow(parseISO(activity.created_at), {
-                addSuffix: true,
-                locale: de,
-              })
-            : "";
-
-          return (
-            <Link
-              key={activity.id}
-              href={`/cases/${activity.case_id}`}
-              className="group flex items-center gap-3 py-2.5 transition-colors first:pt-0 last:pb-0 hover:bg-neutral-50 -mx-5 px-5"
-            >
-              <div className="rounded-md bg-neutral-100 p-1.5">
-                <Icon className="h-3.5 w-3.5 text-neutral-500" />
-              </div>
-              <div className="min-w-0 flex-1">
-                <p className="truncate text-sm text-neutral-900">
-                  {activity.title}
-                </p>
-                <div className="flex items-center gap-2 text-xs text-neutral-500">
-                  <span>{activity.case_number}</span>
-                  {timeAgo && (
-                    <>
-                      <span className="text-neutral-300">·</span>
-                      <span>{timeAgo}</span>
-                    </>
-                  )}
-                </div>
-              </div>
-              <ChevronRight className="h-4 w-4 shrink-0 text-neutral-300 transition-colors group-hover:text-neutral-500" />
-            </Link>
-          );
-        })}
-      </div>
-    </div>
-  );
-}

frontend/src/components/dashboard/UpcomingTimeline.tsx

@@ -1,9 +1,8 @@
 "use client";
 
-import Link from "next/link";
 import { format, parseISO, isToday, isTomorrow } from "date-fns";
 import { de } from "date-fns/locale";
-import { Clock, Calendar, MapPin, ChevronRight } from "lucide-react";
+import { Clock, Calendar, MapPin } from "lucide-react";
 import type { UpcomingDeadline, UpcomingAppointment } from "@/lib/types";
 
 interface Props {
@@ -81,12 +80,8 @@ export function UpcomingTimeline({ deadlines, appointments }: Props) {
 function TimelineEntry({ item }: { item: TimelineItem }) {
   if (item.type === "deadline") {
     const d = item.data;
-    const href = `/fristen/${d.id}`;
     return (
-      <Link
+      <div className="flex items-start gap-3 rounded-lg border border-neutral-100 bg-neutral-50/50 px-3 py-2.5">
-        href={href}
-        className="group flex items-start gap-3 rounded-lg border border-neutral-100 bg-neutral-50/50 px-3 py-2.5 transition-colors hover:border-neutral-200 hover:bg-neutral-100/50"
-      >
         <div className="mt-0.5 rounded-md bg-amber-50 p-1">
           <Clock className="h-3.5 w-3.5 text-amber-500" />
         </div>
@@ -95,40 +90,19 @@ function TimelineEntry({ item }: { item: TimelineItem }) {
             {d.title}
           </p>
           <p className="mt-0.5 truncate text-xs text-neutral-500">
-            {d.case_id ? (
+            {d.case_number} · {d.case_title}
-              <span
-                onClick={(e) => e.stopPropagation()}
-                className="inline"
-              >
-                <Link
-                  href={`/cases/${d.case_id}`}
-                  className="underline decoration-neutral-300 hover:text-neutral-900 hover:decoration-neutral-500"
-                >
-                  {d.case_number}
-                </Link>
-                {" · "}
-              </span>
-            ) : (
-              <>{d.case_number} · </>
-            )}
-            {d.case_title}
           </p>
         </div>
-        <div className="flex shrink-0 items-center gap-1.5">
+        <span className="shrink-0 text-xs font-medium text-amber-600">
-          <span className="text-xs font-medium text-amber-600">Frist</span>
+          Frist
-          <ChevronRight className="h-3.5 w-3.5 text-neutral-300 transition-colors group-hover:text-neutral-500" />
+        </span>
-        </div>
+      </div>
-      </Link>
     );
   }
 
   const a = item.data;
-  const href = `/termine/${a.id}`;
   return (
-    <Link
+    <div className="flex items-start gap-3 rounded-lg border border-neutral-100 bg-neutral-50/50 px-3 py-2.5">
-      href={href}
-      className="group flex items-start gap-3 rounded-lg border border-neutral-100 bg-neutral-50/50 px-3 py-2.5 transition-colors hover:border-neutral-200 hover:bg-neutral-100/50"
-    >
       <div className="mt-0.5 rounded-md bg-blue-50 p-1">
         <Calendar className="h-3.5 w-3.5 text-blue-500" />
       </div>
@@ -147,20 +121,7 @@ function TimelineEntry({ item }: { item: TimelineItem }) {
               </span>
             </>
           )}
-          {a.case_number && a.case_id && (
+          {a.case_number && (
-            <>
-              <span className="text-neutral-300">·</span>
-              <span onClick={(e) => e.stopPropagation()}>
-                <Link
-                  href={`/cases/${a.case_id}`}
-                  className="underline decoration-neutral-300 hover:text-neutral-900 hover:decoration-neutral-500"
-                >
-                  {a.case_number}
-                </Link>
-              </span>
-            </>
-          )}
-          {a.case_number && !a.case_id && (
             <>
               <span className="text-neutral-300">·</span>
               <span>{a.case_number}</span>
@@ -168,10 +129,9 @@ function TimelineEntry({ item }: { item: TimelineItem }) {
           )}
         </div>
       </div>
-      <div className="flex shrink-0 items-center gap-1.5">
+      <span className="shrink-0 text-xs font-medium text-blue-600">
-        <span className="text-xs font-medium text-blue-600">Termin</span>
+        Termin
-        <ChevronRight className="h-3.5 w-3.5 text-neutral-300 transition-colors group-hover:text-neutral-500" />
+      </span>
-      </div>
+    </div>
-    </Link>
   );
 }

frontend/src/components/deadlines/DeadlineList.tsx

@@ -10,14 +10,7 @@ import { toast } from "sonner";
 import { useState, useMemo } from "react";
 import { EmptyState } from "@/components/ui/EmptyState";
 
-type StatusFilter = "all" | "pending" | "completed" | "overdue" | "this_week" | "ok";
+type StatusFilter = "all" | "pending" | "completed" | "overdue";
-
-function mapUrlStatus(status?: string): StatusFilter {
-  if (status === "overdue") return "overdue";
-  if (status === "this_week") return "this_week";
-  if (status === "ok") return "ok";
-  return "all";
-}
 
 function getUrgency(deadline: Deadline): "red" | "amber" | "green" {
   if (deadline.status === "completed") return "green";
@@ -54,15 +47,9 @@ const urgencyConfig = {
 const selectClass =
   "rounded-md border border-neutral-200 bg-white px-2.5 py-1 text-sm text-neutral-700 transition-colors focus:border-neutral-400 focus:ring-1 focus:ring-neutral-400 outline-none";
 
-interface Props {
+export function DeadlineList() {
-  initialStatus?: string;
-}
-
-export function DeadlineList({ initialStatus }: Props) {
   const queryClient = useQueryClient();
-  const [statusFilter, setStatusFilter] = useState<StatusFilter>(
+  const [statusFilter, setStatusFilter] = useState<StatusFilter>("all");
-    mapUrlStatus(initialStatus),
-  );
   const [caseFilter, setCaseFilter] = useState<string>("all");
 
   const { data: deadlines, isLoading } = useQuery({
@@ -103,18 +90,6 @@ export function DeadlineList({ initialStatus }: Props) {
         if (d.status === "completed") return false;
         if (!isPast(parseISO(d.due_date))) return false;
       }
-      if (statusFilter === "this_week") {
-        if (d.status === "completed") return false;
-        const due = parseISO(d.due_date);
-        if (isPast(due)) return false;
-        if (!isThisWeek(due, { weekStartsOn: 1 })) return false;
-      }
-      if (statusFilter === "ok") {
-        if (d.status === "completed") return false;
-        const due = parseISO(d.due_date);
-        if (isPast(due)) return false;
-        if (isThisWeek(due, { weekStartsOn: 1 })) return false;
-      }
       if (caseFilter !== "all" && d.case_id !== caseFilter) return false;
       return true;
     });
@@ -169,10 +144,10 @@ export function DeadlineList({ initialStatus }: Props) {
         </button>
         <button
           onClick={() =>
-            setStatusFilter(statusFilter === "this_week" ? "all" : "this_week")
+            setStatusFilter(statusFilter === "pending" ? "all" : "pending")
           }
           className={`rounded-lg border p-3 text-left transition-all ${
-            statusFilter === "this_week"
+            statusFilter === "pending"
               ? "border-amber-300 bg-amber-50 ring-1 ring-amber-200"
               : "border-neutral-200 bg-white hover:bg-neutral-50"
           }`}
@@ -183,11 +158,9 @@ export function DeadlineList({ initialStatus }: Props) {
           <div className="text-xs text-neutral-500">Diese Woche</div>
         </button>
         <button
-          onClick={() =>
+          onClick={() => setStatusFilter("all")}
-            setStatusFilter(statusFilter === "ok" ? "all" : "ok")
-          }
           className={`rounded-lg border p-3 text-left transition-all ${
-            statusFilter === "ok"
+            statusFilter === "all"
               ? "border-green-300 bg-green-50 ring-1 ring-green-200"
               : "border-neutral-200 bg-white hover:bg-neutral-50"
           }`}
@@ -214,8 +187,6 @@ export function DeadlineList({ initialStatus }: Props) {
           <option value="pending">Offen</option>
           <option value="completed">Erledigt</option>
           <option value="overdue">Überfällig</option>
-          <option value="this_week">Diese Woche</option>
-          <option value="ok">Im Zeitplan</option>
         </select>
         {Array.isArray(cases) && cases.length > 0 && (
           <select

frontend/src/components/layout/Breadcrumb.tsx

@@ -6,33 +6,24 @@ export interface BreadcrumbItem {
   href?: string;
 }
 
-interface Props {
+export function Breadcrumb({ items }: { items: BreadcrumbItem[] }) {
-  items: BreadcrumbItem[];
-}
-
-export function Breadcrumb({ items }: Props) {
   return (
-    <nav aria-label="Breadcrumb" className="mb-4 flex items-center gap-1 text-sm text-neutral-500">
+    <nav className="mb-4 flex items-center gap-1 text-sm text-neutral-500">
-      {items.map((item, i) => {
+      {items.map((item, i) => (
-        const isLast = i === items.length - 1;
+        <span key={i} className="flex items-center gap-1">
-        return (
+          {i > 0 && <ChevronRight className="h-3.5 w-3.5 text-neutral-300" />}
-          <span key={i} className="flex items-center gap-1">
+          {item.href ? (
-            {i > 0 && <ChevronRight className="h-3.5 w-3.5 text-neutral-300" />}
+            <Link
-            {isLast || !item.href ? (
+              href={item.href}
-              <span className={isLast ? "font-medium text-neutral-900" : ""}>
+              className="transition-colors hover:text-neutral-700"
-                {item.label}
+            >
-              </span>
+              {item.label}
-            ) : (
+            </Link>
-              <Link
+          ) : (
-                href={item.href}
+            <span className="font-medium text-neutral-900">{item.label}</span>
-                className="transition-colors hover:text-neutral-900"
+          )}
-              >
+        </span>
-                {item.label}
+      ))}
-              </Link>
-            )}
-          </span>
-        );
-      })}
     </nav>
   );
 }

frontend/src/components/notes/NotesList.tsx

@@ -0,0 +1,209 @@
+"use client";
+
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type { Note } from "@/lib/types";
+import { format, parseISO } from "date-fns";
+import { de } from "date-fns/locale";
+import { Plus, Pencil, Trash2, X, Check, MessageSquare } from "lucide-react";
+import { useState } from "react";
+import { toast } from "sonner";
+
+interface NotesListProps {
+  parentType: "case" | "deadline" | "appointment" | "case_event";
+  parentId: string;
+}
+
+export function NotesList({ parentType, parentId }: NotesListProps) {
+  const queryClient = useQueryClient();
+  const queryKey = ["notes", parentType, parentId];
+
+  const [newContent, setNewContent] = useState("");
+  const [showNew, setShowNew] = useState(false);
+  const [editingId, setEditingId] = useState<string | null>(null);
+  const [editContent, setEditContent] = useState("");
+
+  const { data: notes, isLoading } = useQuery({
+    queryKey,
+    queryFn: () =>
+      api.get<Note[]>(`/notes?${parentType}_id=${parentId}`),
+  });
+
+  const createMutation = useMutation({
+    mutationFn: (content: string) => {
+      const body: Record<string, string> = {
+        content,
+        [`${parentType}_id`]: parentId,
+      };
+      return api.post<Note>("/notes", body);
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey });
+      setNewContent("");
+      setShowNew(false);
+      toast.success("Notiz erstellt");
+    },
+    onError: () => toast.error("Fehler beim Erstellen der Notiz"),
+  });
+
+  const updateMutation = useMutation({
+    mutationFn: ({ id, content }: { id: string; content: string }) =>
+      api.put<Note>(`/notes/${id}`, { content }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey });
+      setEditingId(null);
+      toast.success("Notiz aktualisiert");
+    },
+    onError: () => toast.error("Fehler beim Aktualisieren der Notiz"),
+  });
+
+  const deleteMutation = useMutation({
+    mutationFn: (id: string) => api.delete(`/notes/${id}`),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey });
+      toast.success("Notiz geloescht");
+    },
+    onError: () => toast.error("Fehler beim Loeschen der Notiz"),
+  });
+
+  function handleCreate() {
+    if (!newContent.trim()) return;
+    createMutation.mutate(newContent.trim());
+  }
+
+  function handleUpdate(id: string) {
+    if (!editContent.trim()) return;
+    updateMutation.mutate({ id, content: editContent.trim() });
+  }
+
+  function startEdit(note: Note) {
+    setEditingId(note.id);
+    setEditContent(note.content);
+  }
+
+  const notesList = Array.isArray(notes) ? notes : [];
+
+  return (
+    <div className="rounded-lg border border-neutral-200 bg-white">
+      <div className="flex items-center justify-between border-b border-neutral-100 px-4 py-3">
+        <h3 className="text-sm font-medium text-neutral-900">Notizen</h3>
+        {!showNew && (
+          <button
+            onClick={() => setShowNew(true)}
+            className="flex items-center gap-1 rounded-md px-2 py-1 text-xs text-neutral-500 transition-colors hover:bg-neutral-50 hover:text-neutral-700"
+          >
+            <Plus className="h-3.5 w-3.5" />
+            Neu
+          </button>
+        )}
+      </div>
+
+      {showNew && (
+        <div className="border-b border-neutral-100 p-4">
+          <textarea
+            value={newContent}
+            onChange={(e) => setNewContent(e.target.value)}
+            rows={3}
+            autoFocus
+            placeholder="Notiz schreiben..."
+            className="w-full rounded-md border border-neutral-200 px-3 py-2 text-sm outline-none focus:border-neutral-400 focus:ring-1 focus:ring-neutral-400"
+          />
+          <div className="mt-2 flex justify-end gap-2">
+            <button
+              onClick={() => {
+                setShowNew(false);
+                setNewContent("");
+              }}
+              className="rounded-md px-2.5 py-1 text-xs text-neutral-500 hover:bg-neutral-50"
+            >
+              Abbrechen
+            </button>
+            <button
+              onClick={handleCreate}
+              disabled={!newContent.trim() || createMutation.isPending}
+              className="rounded-md bg-neutral-900 px-2.5 py-1 text-xs font-medium text-white hover:bg-neutral-800 disabled:opacity-50"
+            >
+              {createMutation.isPending ? "Speichern..." : "Speichern"}
+            </button>
+          </div>
+        </div>
+      )}
+
+      {isLoading ? (
+        <div className="space-y-2 p-4">
+          {[1, 2].map((i) => (
+            <div key={i} className="h-12 animate-pulse rounded-md bg-neutral-100" />
+          ))}
+        </div>
+      ) : notesList.length === 0 ? (
+        <div className="flex flex-col items-center py-8 text-center">
+          <MessageSquare className="h-5 w-5 text-neutral-300" />
+          <p className="mt-2 text-sm text-neutral-400">
+            Keine Notizen vorhanden.
+          </p>
+        </div>
+      ) : (
+        <div className="divide-y divide-neutral-100">
+          {notesList.map((note) => (
+            <div key={note.id} className="group px-4 py-3">
+              {editingId === note.id ? (
+                <div>
+                  <textarea
+                    value={editContent}
+                    onChange={(e) => setEditContent(e.target.value)}
+                    rows={3}
+                    autoFocus
+                    className="w-full rounded-md border border-neutral-200 px-3 py-2 text-sm outline-none focus:border-neutral-400 focus:ring-1 focus:ring-neutral-400"
+                  />
+                  <div className="mt-2 flex justify-end gap-2">
+                    <button
+                      onClick={() => setEditingId(null)}
+                      className="rounded-md p-1 text-neutral-400 hover:bg-neutral-50 hover:text-neutral-600"
+                    >
+                      <X className="h-3.5 w-3.5" />
+                    </button>
+                    <button
+                      onClick={() => handleUpdate(note.id)}
+                      disabled={!editContent.trim() || updateMutation.isPending}
+                      className="rounded-md p-1 text-neutral-400 hover:bg-neutral-50 hover:text-green-600"
+                    >
+                      <Check className="h-3.5 w-3.5" />
+                    </button>
+                  </div>
+                </div>
+              ) : (
+                <div>
+                  <div className="flex items-start justify-between">
+                    <p className="whitespace-pre-wrap text-sm text-neutral-700">
+                      {note.content}
+                    </p>
+                    <div className="ml-4 flex shrink-0 gap-1 opacity-0 transition-opacity group-hover:opacity-100">
+                      <button
+                        onClick={() => startEdit(note)}
+                        className="rounded p-1 text-neutral-400 hover:bg-neutral-50 hover:text-neutral-600"
+                      >
+                        <Pencil className="h-3 w-3" />
+                      </button>
+                      <button
+                        onClick={() => deleteMutation.mutate(note.id)}
+                        className="rounded p-1 text-neutral-400 hover:bg-red-50 hover:text-red-500"
+                      >
+                        <Trash2 className="h-3 w-3" />
+                      </button>
+                    </div>
+                  </div>
+                  <p className="mt-1 text-xs text-neutral-400">
+                    {format(parseISO(note.created_at), "d. MMM yyyy, HH:mm", {
+                      locale: de,
+                    })}
+                    {note.updated_at !== note.created_at && " (bearbeitet)"}
+                  </p>
+                </div>
+              )}
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/lib/types.ts

@@ -223,6 +223,28 @@ export interface UpcomingAppointment {
   case_title?: string;
 }
 
+export interface DashboardData {
+  deadline_summary: DeadlineSummary;
+  case_summary: CaseSummary;
+  upcoming_deadlines: UpcomingDeadline[];
+  upcoming_appointments: UpcomingAppointment[];
+}
+
+// Notes
+export interface Note {
+  id: string;
+  tenant_id: string;
+  case_id?: string;
+  deadline_id?: string;
+  appointment_id?: string;
+  case_event_id?: string;
+  content: string;
+  created_by?: string;
+  created_at: string;
+  updated_at: string;
+}
+
+// Recent Activity
 export interface RecentActivity {
   id: string;
   event_type?: string;
@@ -233,14 +255,6 @@ export interface RecentActivity {
   created_at: string;
 }
 
-export interface DashboardData {
-  deadline_summary: DeadlineSummary;
-  case_summary: CaseSummary;
-  upcoming_deadlines: UpcomingDeadline[];
-  upcoming_appointments: UpcomingAppointment[];
-  recent_activity?: RecentActivity[];
-}
-
 // AI Extraction types
 
 export interface ExtractedDeadline {