feat(#145): internationalise dashboard widget strings (de/en/es)

Replace all hardcoded German strings in dashboard components with
Paraglide translation keys. Date locale uses getLocale() instead
of the hardcoded 'de-DE'.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/messages/de.json

@@ -312,5 +312,13 @@
 	"page_title_persons": "Personen",
 	"page_title_admin": "Administration",
 	"page_title_login": "Anmelden",
-	"page_title_error": "Fehler – Familienarchiv"
+	"page_title_error": "Fehler – Familienarchiv",
+	"dashboard_notifications_heading": "Benachrichtigungen",
+	"dashboard_notification_mentioned": "erwähnt Sie",
+	"dashboard_notification_replied": "hat geantwortet",
+	"dashboard_needs_metadata_heading": "Metadaten fehlen",
+	"dashboard_needs_metadata_show_all": "Alle anzeigen",
+	"dashboard_recent_heading": "Zuletzt hinzugefügt",
+	"dashboard_resume_label": "Zuletzt geöffnet:",
+	"dashboard_resume_fallback": "Unbekanntes Dokument"
 }

frontend/messages/en.json

@@ -312,5 +312,13 @@
 	"page_title_persons": "Persons",
 	"page_title_admin": "Administration",
 	"page_title_login": "Sign in",
-	"page_title_error": "Error – Family Archive"
+	"page_title_error": "Error – Family Archive",
+	"dashboard_notifications_heading": "Notifications",
+	"dashboard_notification_mentioned": "mentioned you",
+	"dashboard_notification_replied": "replied",
+	"dashboard_needs_metadata_heading": "Missing Metadata",
+	"dashboard_needs_metadata_show_all": "Show all",
+	"dashboard_recent_heading": "Recently Added",
+	"dashboard_resume_label": "Last opened:",
+	"dashboard_resume_fallback": "Unknown document"
 }

frontend/messages/es.json

@@ -312,5 +312,13 @@
 	"page_title_persons": "Personas",
 	"page_title_admin": "Administración",
 	"page_title_login": "Iniciar sesión",
-	"page_title_error": "Error – Archivo familiar"
+	"page_title_error": "Error – Archivo familiar",
+	"dashboard_notifications_heading": "Notificaciones",
+	"dashboard_notification_mentioned": "te mencionó",
+	"dashboard_notification_replied": "respondió",
+	"dashboard_needs_metadata_heading": "Metadatos incompletos",
+	"dashboard_needs_metadata_show_all": "Ver todos",
+	"dashboard_recent_heading": "Añadidos recientemente",
+	"dashboard_resume_label": "Último abierto:",
+	"dashboard_resume_fallback": "Documento desconocido"
 }

frontend/src/lib/components/DashboardMentions.svelte

@@ -1,4 +1,6 @@
 <script lang="ts">
+import * as m from '$lib/paraglide/messages.js';
+
 type NotificationDTO = {
 	id: string;
 	type: 'REPLY' | 'MENTION';
@@ -18,7 +20,7 @@ let { mentions }: Props = $props();
 {#if mentions.length > 0}
 	<div data-testid="dashboard-mentions" class="rounded-sm border border-line bg-surface p-6">
 		<h2 class="mb-4 font-sans text-xs font-bold tracking-widest text-gray-400 uppercase">
-			Benachrichtigungen
+			{m.dashboard_notifications_heading()}
 		</h2>
 		{#each mentions as mention (mention.id)}
 			<div class="flex items-center gap-3 border-b border-line py-2 last:border-0">
@@ -29,8 +31,10 @@ let { mentions }: Props = $props();
 					>
 						{mention.actorName ?? ''}
 						{#if mention.type === 'MENTION'}<span class="ml-1 font-sans text-xs text-gray-400"
-								>erwähnt Sie</span
+								>{m.dashboard_notification_mentioned()}</span
-							>{:else}<span class="ml-1 font-sans text-xs text-gray-400">hat geantwortet</span>{/if}
+							>{:else}<span class="ml-1 font-sans text-xs text-gray-400"
+								>{m.dashboard_notification_replied()}</span
+							>{/if}
 					</a>
 				{:else}
 					<span class="font-serif text-sm text-ink">{mention.actorName ?? ''}</span>

frontend/src/lib/components/DashboardNeedsMetadata.svelte

@@ -1,4 +1,6 @@
 <script lang="ts">
+import * as m from '$lib/paraglide/messages.js';
+
 type IncompleteDocumentDTO = {
 	id: string;
 	title: string;
@@ -14,7 +16,7 @@ let { incompleteDocs }: Props = $props();
 {#if incompleteDocs.length > 0}
 	<div data-testid="dashboard-needs-metadata" class="rounded-sm border border-line bg-surface p-6">
 		<h2 class="mb-4 font-sans text-xs font-bold tracking-widest text-gray-400 uppercase">
-			Metadaten fehlen
+			{m.dashboard_needs_metadata_heading()}
 		</h2>
 		{#each incompleteDocs as doc (doc.id)}
 			<div class="flex items-center border-b border-line py-2 last:border-0">
@@ -27,7 +29,9 @@ let { incompleteDocs }: Props = $props();
 			</div>
 		{/each}
 		<div class="mt-4">
-			<a href="/enrich" class="font-sans text-xs text-ink-2 hover:text-ink"> Alle anzeigen </a>
+			<a href="/enrich" class="font-sans text-xs text-ink-2 hover:text-ink"
+				>{m.dashboard_needs_metadata_show_all()}</a
+			>
 		</div>
 	</div>
 {/if}

frontend/src/lib/components/DashboardRecentDocuments.svelte

@@ -1,4 +1,7 @@
 <script lang="ts">
+import * as m from '$lib/paraglide/messages.js';
+import { getLocale } from '$lib/paraglide/runtime.js';
+
 type Document = {
 	id: string;
 	title: string;
@@ -13,7 +16,7 @@ interface Props {
 let { recentDocs }: Props = $props();
 
 function formatDate(dateStr: string): string {
-	return new Intl.DateTimeFormat('de-DE', {
+	return new Intl.DateTimeFormat(getLocale(), {
 		day: 'numeric',
 		month: 'long',
 		year: 'numeric'
@@ -24,7 +27,7 @@ function formatDate(dateStr: string): string {
 {#if recentDocs.length > 0}
 	<div data-testid="dashboard-recent-docs" class="rounded-sm border border-line bg-surface p-6">
 		<h2 class="mb-4 font-sans text-xs font-bold tracking-widest text-gray-400 uppercase">
-			Zuletzt hinzugefügt
+			{m.dashboard_recent_heading()}
 		</h2>
 		{#each recentDocs as doc (doc.id)}
 			<div class="flex items-center justify-between border-b border-line py-2 last:border-0">

frontend/src/lib/components/DashboardResumeStrip.svelte

@@ -1,5 +1,6 @@
 <script lang="ts">
 import { onMount } from 'svelte';
+import * as m from '$lib/paraglide/messages.js';
 
 interface LastVisited {
 	id: string;
@@ -28,9 +29,9 @@ onMount(() => {
 		data-testid="resume-strip"
 		class="flex items-center gap-2 rounded-sm border border-line bg-surface px-4 py-3 font-sans text-sm"
 	>
-		<span class="text-ink-2">Zuletzt geöffnet:</span>
+		<span class="text-ink-2">{m.dashboard_resume_label()}</span>
 		<a href="/documents/{lastVisited.id}" class="font-medium text-ink hover:underline">
-			{lastVisited.title || 'Zuletzt geöffnet'}
+			{lastVisited.title || m.dashboard_resume_fallback()}
 		</a>
 	</div>
 {/if}