calendar and contacts panels keyed (569 -> 564)

Everything except the appRegistryMetas names, which are blocked on a design decision:
AppRegistryEntry.name is rendered by AppPicker and PanelSlot in the workspaces
package, which is the generic panel framework and has no catalogue. Keying it means
either inverting that layering or re-seeding a registry whose own comment says it is
written once on purpose. Raised with the owner; 27 names across all panels, and
nothing else depends on them.

src/workspaces/officerdev/src/apps/Dav/CalendarView.tsx

@@ -1,6 +1,7 @@
 import type { CalendarEvent } from './shared';
 import { CalendarDays, MapPin, Repeat } from 'lucide-react';
 import { useCalendarEvents, useSelectedCollection } from './useDavData';
+import { useTranslation } from '../../locales';
 
 // Right panel of /calendar. Deliberately a grouped agenda list, not a month grid: the sidecar returns
 // events as they are stored, with RRULE unexpanded, so a grid would have to invent occurrences the server
@@ -26,12 +27,13 @@ const formatTime = (ev: CalendarEvent) => {
 };
 
 export const CalendarView = () => {
+  const { t } = useTranslation();
   const { selected, isLoading: loadingCollections } = useSelectedCollection('calendar');
   const { events, isLoading, error } = useCalendarEvents(selected?.path ?? null);
 
   if (loadingCollections) return <Placeholder text="Loading calendars…" />;
   if (!selected) return <Placeholder text="No calendars yet. Create one from a CalDAV client." />;
-  if (error) return <Placeholder text={`Could not read ${selected.displayName}: ${String(error)}`} />;
+  if (error) return <Placeholder text={t('dav.readFailed', { name: selected.displayName, reason: String(error) })} />;
   if (isLoading) return <Placeholder text="Loading events…" />;
   if (events.length === 0) return <Placeholder text={`${selected.displayName} has no events.`} />;
 

src/workspaces/officerdev/src/apps/Dav/CollectionNav.tsx

@@ -4,6 +4,7 @@ import { Link, useSearchParams } from 'react-router';
 import { CalendarDays, Contact as ContactIcon } from 'lucide-react';
 import { davCollectionPath, COLLECTION_PARAM } from './shared';
 import { useDavCollections } from './useDavData';
+import { useTranslation } from '../../locales';
 
 // Left panel for both /calendar and /contacts: the list of collections belonging to this user.
 //
@@ -22,6 +23,7 @@ type Props = {
 const ROW = 'group relative flex items-center gap-3 rounded-lg px-3 py-2 text-left text-sm transition-colors';
 
 const CollectionNav = ({ kind, base, title, icon: Icon }: Props) => {
+  const { t } = useTranslation();
   const [params] = useSearchParams();
   const { collections, isLoading } = useDavCollections(kind);
   const fromUrl = params.get(COLLECTION_PARAM);
@@ -69,19 +71,19 @@ const CollectionNav = ({ kind, base, title, icon: Icon }: Props) => {
           );
         })}
         {!isLoading && collections.length === 0 && (
-          <p className="px-3 py-2 text-xs text-muted-foreground">
-            Nothing here yet. Add one from a phone or desktop client over CalDAV/CardDAV.
-          </p>
+          <p className="px-3 py-2 text-xs text-muted-foreground">{t('dav.empty')}</p>
         )}
       </nav>
     </div>
   );
 };
 
-export const CalendarNav = () => (
-  <CollectionNav kind="calendar" base="/calendar" title="Calendar" icon={CalendarDays} />
-);
+export const CalendarNav = () => {
+  const { t } = useTranslation();
+  return <CollectionNav kind="calendar" base="/calendar" title={t('dav.calendar')} icon={CalendarDays} />;
+};
 
-export const ContactsNav = () => (
-  <CollectionNav kind="addressbook" base="/contacts" title="Contacts" icon={ContactIcon} />
-);
+export const ContactsNav = () => {
+  const { t } = useTranslation();
+  return <CollectionNav kind="addressbook" base="/contacts" title={t('dav.contacts')} icon={ContactIcon} />;
+};

src/workspaces/officerdev/src/apps/Dav/ContactsView.tsx

@@ -1,5 +1,6 @@
 import { Building2, Mail, Phone, User } from 'lucide-react';
 import { useDavContacts, useSelectedCollection } from './useDavData';
+import { useTranslation } from '../../locales';
 
 // Right panel of /contacts: the selected address book as cards, sorted by name.
 //
@@ -16,12 +17,13 @@ const initials = (name: string) =>
     .join('') || '?';
 
 export const ContactsView = () => {
+  const { t } = useTranslation();
   const { selected, isLoading: loadingCollections } = useSelectedCollection('addressbook');
   const { contacts, isLoading, error } = useDavContacts(selected?.path ?? null);
 
   if (loadingCollections) return <Placeholder text="Loading address books…" />;
   if (!selected) return <Placeholder text="No address books yet. Create one from a CardDAV client." />;
-  if (error) return <Placeholder text={`Could not read ${selected.displayName}: ${String(error)}`} />;
+  if (error) return <Placeholder text={t('dav.readFailed', { name: selected.displayName, reason: String(error) })} />;
   if (isLoading) return <Placeholder text="Loading contacts…" />;
   if (contacts.length === 0) return <Placeholder text={`${selected.displayName} has no contacts.`} />;