feat: wire 10 dead buttons across 6 modules to their server actions

Every module had buttons that rendered visually but did nothing when
clicked. Server actions existed for all of them. Created client
components with dialogs/forms and wired them in.

BOOKINGS MODULE:
- BookingStatusActions: Check-in/Check-out/Cancel buttons now call
  updateBookingStatus server action with loading states + toast
- CreateRoomDialog: 'Neues Zimmer' opens dialog with room number,
  name, capacity, price/night fields → calls createRoom
- CreateGuestDialog: 'Neuer Gast' opens dialog with first/last name,
  email, phone fields → calls createGuest

COURSES MODULE:
- EnrollParticipantDialog: 'Teilnehmer anmelden' on participants
  page opens dialog with first/last name, email, phone → calls
  enrollParticipant

EVENTS MODULE:
- EventRegistrationDialog: 'Anmeldung' button on event detail opens
  dialog with participant data + DOB → calls registerForEvent
- CreateHolidayPassDialog: 'Neuer Ferienpass' opens dialog with name,
  year, description, price, date range → calls createHolidayPass

NEWSLETTER MODULE:
- CreateTemplateDialog: 'Neue Vorlage' opens dialog with name,
  subject, HTML body → calls createTemplate

SITE-BUILDER MODULE:
- Posts 'Neuer Beitrag' button now links to /posts/new page

All dialogs use German labels, helpful placeholders, loading spinners,
toast notifications, and form validation appropriate for association
board members (Vereinsvorstände, 40-65, moderate tech skills).

packages/features/event-management/package.json

@@ -35,5 +35,8 @@
     "react": "catalog:",
     "react-hook-form": "catalog:",
     "zod": "catalog:"
+  },
+  "dependencies": {
+    "lucide-react": "catalog:"
   }
-}
+}

packages/features/event-management/src/components/create-holiday-pass-dialog.tsx

@@ -0,0 +1,106 @@
+'use client';
+
+import { useAction } from 'next-safe-action/hooks';
+import { useRouter } from 'next/navigation';
+import { useState } from 'react';
+
+import { Plus, Loader2 } from 'lucide-react';
+
+import { Button } from '@kit/ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+  DialogTrigger,
+} from '@kit/ui/dialog';
+import { Input } from '@kit/ui/input';
+import { Label } from '@kit/ui/label';
+import { toast } from '@kit/ui/sonner';
+
+import { createHolidayPass } from '../server/actions/event-actions';
+
+interface CreateHolidayPassDialogProps {
+  accountId: string;
+}
+
+export function CreateHolidayPassDialog({ accountId }: CreateHolidayPassDialogProps) {
+  const router = useRouter();
+  const [open, setOpen] = useState(false);
+  const currentYear = new Date().getFullYear();
+  const [form, setForm] = useState({ name: '', year: String(currentYear), description: '', price: '0', validFrom: '', validUntil: '' });
+
+  const action = useAction(createHolidayPass, {
+    onSuccess: () => {
+      toast.success('Ferienpass erstellt');
+      setOpen(false);
+      setForm({ name: '', year: String(currentYear), description: '', price: '0', validFrom: '', validUntil: '' });
+      router.refresh();
+    },
+    onError: () => toast.error('Fehler beim Erstellen'),
+  });
+
+  return (
+    <Dialog open={open} onOpenChange={setOpen}>
+      <DialogTrigger asChild>
+        <Button><Plus className="mr-2 h-4 w-4" />Neuer Ferienpass</Button>
+      </DialogTrigger>
+      <DialogContent>
+        <DialogHeader>
+          <DialogTitle>Ferienpass erstellen</DialogTitle>
+          <DialogDescription>Erstellen Sie einen neuen Ferienpass für Ihr Ferienprogramm.</DialogDescription>
+        </DialogHeader>
+        <div className="grid gap-4 py-4">
+          <div className="grid grid-cols-2 gap-4">
+            <div className="grid gap-2">
+              <Label>Name *</Label>
+              <Input placeholder="z.B. Sommerferienprogramm" value={form.name} onChange={(e) => setForm(s => ({ ...s, name: e.target.value }))} />
+            </div>
+            <div className="grid gap-2">
+              <Label>Jahr *</Label>
+              <Input type="number" value={form.year} onChange={(e) => setForm(s => ({ ...s, year: e.target.value }))} />
+            </div>
+          </div>
+          <div className="grid gap-2">
+            <Label>Beschreibung</Label>
+            <Input placeholder="Optional" value={form.description} onChange={(e) => setForm(s => ({ ...s, description: e.target.value }))} />
+          </div>
+          <div className="grid grid-cols-3 gap-4">
+            <div className="grid gap-2">
+              <Label>Preis (€)</Label>
+              <Input type="number" step="0.01" min="0" value={form.price} onChange={(e) => setForm(s => ({ ...s, price: e.target.value }))} />
+            </div>
+            <div className="grid gap-2">
+              <Label>Gültig ab</Label>
+              <Input type="date" value={form.validFrom} onChange={(e) => setForm(s => ({ ...s, validFrom: e.target.value }))} />
+            </div>
+            <div className="grid gap-2">
+              <Label>Gültig bis</Label>
+              <Input type="date" value={form.validUntil} onChange={(e) => setForm(s => ({ ...s, validUntil: e.target.value }))} />
+            </div>
+          </div>
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={() => setOpen(false)}>Abbrechen</Button>
+          <Button
+            onClick={() => action.execute({
+              accountId,
+              name: form.name,
+              year: Number(form.year),
+              description: form.description || undefined,
+              price: Number(form.price) || 0,
+              validFrom: form.validFrom || undefined,
+              validUntil: form.validUntil || undefined,
+            })}
+            disabled={action.isPending || !form.name || !form.year}
+          >
+            {action.isPending && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
+            Erstellen
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}

packages/features/event-management/src/components/event-registration-dialog.tsx

@@ -0,0 +1,105 @@
+'use client';
+
+import { useAction } from 'next-safe-action/hooks';
+import { useRouter } from 'next/navigation';
+import { useState } from 'react';
+
+import { UserPlus, Loader2 } from 'lucide-react';
+
+import { Button } from '@kit/ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+  DialogTrigger,
+} from '@kit/ui/dialog';
+import { Input } from '@kit/ui/input';
+import { Label } from '@kit/ui/label';
+import { toast } from '@kit/ui/sonner';
+
+import { registerForEvent } from '../server/actions/event-actions';
+
+interface EventRegistrationDialogProps {
+  eventId: string;
+  eventName: string;
+}
+
+export function EventRegistrationDialog({ eventId, eventName }: EventRegistrationDialogProps) {
+  const router = useRouter();
+  const [open, setOpen] = useState(false);
+  const [form, setForm] = useState({ firstName: '', lastName: '', email: '', phone: '', dateOfBirth: '' });
+
+  const action = useAction(registerForEvent, {
+    onSuccess: ({ data }) => {
+      if (data?.success) {
+        toast.success('Anmeldung erfolgreich');
+        setOpen(false);
+        setForm({ firstName: '', lastName: '', email: '', phone: '', dateOfBirth: '' });
+        router.refresh();
+      } else {
+        toast.error(data?.error ?? 'Fehler bei der Anmeldung');
+      }
+    },
+    onError: () => toast.error('Fehler bei der Anmeldung'),
+  });
+
+  return (
+    <Dialog open={open} onOpenChange={setOpen}>
+      <DialogTrigger asChild>
+        <Button><UserPlus className="mr-2 h-4 w-4" />Anmeldung</Button>
+      </DialogTrigger>
+      <DialogContent>
+        <DialogHeader>
+          <DialogTitle>Anmeldung zu „{eventName}"</DialogTitle>
+          <DialogDescription>Melden Sie einen Teilnehmer an.</DialogDescription>
+        </DialogHeader>
+        <div className="grid gap-4 py-4">
+          <div className="grid grid-cols-2 gap-4">
+            <div className="grid gap-2">
+              <Label>Vorname *</Label>
+              <Input value={form.firstName} onChange={(e) => setForm(s => ({ ...s, firstName: e.target.value }))} />
+            </div>
+            <div className="grid gap-2">
+              <Label>Nachname *</Label>
+              <Input value={form.lastName} onChange={(e) => setForm(s => ({ ...s, lastName: e.target.value }))} />
+            </div>
+          </div>
+          <div className="grid gap-2">
+            <Label>E-Mail</Label>
+            <Input type="email" value={form.email} onChange={(e) => setForm(s => ({ ...s, email: e.target.value }))} />
+          </div>
+          <div className="grid grid-cols-2 gap-4">
+            <div className="grid gap-2">
+              <Label>Telefon</Label>
+              <Input value={form.phone} onChange={(e) => setForm(s => ({ ...s, phone: e.target.value }))} />
+            </div>
+            <div className="grid gap-2">
+              <Label>Geburtsdatum</Label>
+              <Input type="date" value={form.dateOfBirth} onChange={(e) => setForm(s => ({ ...s, dateOfBirth: e.target.value }))} />
+            </div>
+          </div>
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={() => setOpen(false)}>Abbrechen</Button>
+          <Button
+            onClick={() => action.execute({
+              eventId,
+              firstName: form.firstName,
+              lastName: form.lastName,
+              email: form.email || undefined,
+              phone: form.phone || undefined,
+              dateOfBirth: form.dateOfBirth || undefined,
+            })}
+            disabled={action.isPending || !form.firstName || !form.lastName}
+          >
+            {action.isPending && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
+            Anmelden
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}

packages/features/event-management/src/components/index.ts

@@ -1 +1,3 @@
 export { CreateEventForm } from './create-event-form';
+export { EventRegistrationDialog } from './event-registration-dialog';
+export { CreateHolidayPassDialog } from './create-holiday-pass-dialog';