feat(dashboard): complete frontend redesign for Issue #271

- +layout.svelte: Upload button in header (authenticated users only)
- +page.server.ts: call /api/dashboard/resume, /pulse, /activity;
  remove deprecated /api/documents/incomplete and /recent-activity
- +page.svelte: 2-col grid layout (main + 320px sidebar), greeting,
  DashboardFamilyPulse + DashboardActivityFeed in sidebar
- DashboardResumeStrip: refactored to use server data (resumeDoc prop),
  SVG thumbnail, progress bar with aria-*, empty state, CTA
- DashboardFamilyPulse: new component — weekly stats from audit_log
- DashboardActivityFeed: new component — activity feed with "für dich" badge
- Update specs for new data shapes

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

frontend/src/lib/components/DashboardFamilyPulse.svelte

@@ -0,0 +1,70 @@
+<script lang="ts">
+import * as m from '$lib/paraglide/messages.js';
+import type { DashboardPulseDTO } from '$lib/generated/api';
+
+interface Props {
+	pulse: DashboardPulseDTO | null;
+}
+
+const { pulse }: Props = $props();
+</script>
+
+{#if pulse !== null}
+	<section class="rounded-sm border border-line bg-surface p-5">
+		<p class="font-sans text-[11px] font-bold tracking-[.12em] text-ink-3 uppercase">
+			{m.pulse_eyebrow()}
+		</p>
+
+		{#if pulse.pages > 0}
+			<h2 class="mt-1 font-serif text-[1.375rem] leading-snug text-ink">
+				Ihr habt <strong>{pulse.pages}</strong> Seiten bearbeitet.
+			</h2>
+		{/if}
+
+		{#if pulse.yourPages > 0}
+			<p class="font-serif text-sm text-ink-2">
+				Du selbst hast {pulse.yourPages} davon bearbeitet.
+			</p>
+		{/if}
+
+		{#if pulse.contributors.length > 0}
+			<div class="mt-3 flex items-center gap-1">
+				<p class="mr-1 font-sans text-[11px] text-ink-3">{m.pulse_contributors()}</p>
+				{#each pulse.contributors as c (c.initials)}
+					<span
+						class="-ml-2 inline-flex h-7 w-7 items-center justify-center rounded-full font-sans text-[11px] font-bold text-white ring-2 ring-white first:ml-0"
+						style="background:{c.color}"
+						title={c.name ?? ''}>{c.initials}</span
+					>
+				{/each}
+			</div>
+		{/if}
+
+		<div class="mt-4 grid grid-cols-3 gap-2">
+			<div class="flex flex-col gap-0.5">
+				<span class="font-serif text-[1.875rem] leading-none font-bold text-ink"
+					>{pulse.annotated}</span
+				>
+				<span class="flex items-center gap-1 font-sans text-[11px] text-ink-3">
+					<span class="text-[8px]" style="color:#00c7b1">●</span>{m.pulse_transcribed()}
+				</span>
+			</div>
+			<div class="flex flex-col gap-0.5">
+				<span class="font-serif text-[1.875rem] leading-none font-bold text-ink"
+					>{pulse.transcribed}</span
+				>
+				<span class="flex items-center gap-1 font-sans text-[11px] text-ink-3">
+					<span class="text-[8px]" style="color:#5a8a6a">●</span>{m.pulse_reviewed()}
+				</span>
+			</div>
+			<div class="flex flex-col gap-0.5">
+				<span class="font-serif text-[1.875rem] leading-none font-bold text-ink"
+					>{pulse.uploaded}</span
+				>
+				<span class="flex items-center gap-1 font-sans text-[11px] text-ink-3">
+					<span class="text-[8px]" style="color:#3060b0">●</span>{m.pulse_uploaded()}
+				</span>
+			</div>
+		</div>
+	</section>
+{/if}