refactor: move document domain core to lib/document/

Moves ~25 components, utils (search, filename, groupDocuments,
documentStatusLabel, validateFile), bulkSelection store, and
TranscriptionSection sub-component. Fixes broken relative imports.

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

frontend/src/lib/document/ReadyColumn.svelte

@@ -0,0 +1,75 @@
+<script lang="ts">
+import * as m from '$lib/paraglide/messages.js';
+import { getLocale } from '$lib/paraglide/runtime.js';
+import { formatMCDate } from '$lib/utils/date.js';
+import type { components } from '$lib/generated/api';
+import ContributorStack from '$lib/components/ContributorStack.svelte';
+
+type TranscriptionQueueItemDTO = components['schemas']['TranscriptionQueueItemDTO'];
+
+interface Props {
+	docs: TranscriptionQueueItemDTO[];
+}
+
+let { docs }: Props = $props();
+
+function reviewedPct(doc: TranscriptionQueueItemDTO): number {
+	if (doc.annotationCount === 0) return 0;
+	return Math.round((doc.reviewedBlockCount / doc.annotationCount) * 100);
+}
+</script>
+
+{#if docs.length > 0}
+	<div
+		class="flex flex-col gap-3 rounded-sm border border-brand-mint bg-brand-mint/10 p-4 transition-shadow hover:shadow-sm"
+	>
+		<div>
+			<div class="mb-1">
+				<h3 class="font-sans text-xs font-bold tracking-widest text-ink uppercase">
+					{m.mission_control_ready_heading()}
+				</h3>
+			</div>
+			<p class="text-xs font-semibold text-ink-2">
+				{m.mission_control_ready_subtitle({ count: docs.length })}
+			</p>
+		</div>
+		<ul class="space-y-1">
+			{#each docs as doc (doc.id)}
+				<li>
+					<a
+						href="/documents/{doc.id}"
+						class="flex min-h-[44px] flex-col justify-center rounded px-1 py-2 hover:bg-brand-mint/20 focus-visible:ring-2 focus-visible:ring-focus-ring focus-visible:ring-offset-2 focus-visible:outline-none"
+					>
+						<span class="font-serif text-sm text-ink">{doc.title}</span>
+						<div class="mt-0.5 flex items-center gap-2">
+							{#if doc.documentDate}
+								<span class="text-xs text-ink-3">{formatMCDate(doc.documentDate, getLocale())}</span
+								>
+							{/if}
+							{#if doc.textedBlockCount > 0}
+								<span class="text-xs font-semibold text-ink">
+									{m.mission_control_reviewed_pct({ pct: reviewedPct(doc) })}
+								</span>
+							{/if}
+						</div>
+						<div class="mt-1">
+							<ContributorStack contributors={doc.contributors} hasMore={doc.hasMoreContributors} />
+						</div>
+					</a>
+				</li>
+			{/each}
+		</ul>
+	</div>
+{:else}
+	<div
+		class="flex min-h-[120px] flex-col items-center justify-center rounded-sm border border-dashed border-brand-mint bg-brand-mint/5 p-6 text-center"
+	>
+		<p class="text-xs text-ink-3">{m.mission_control_ready_empty()}</p>
+		<a
+			href="/enrich?filter=NEEDS_SEGMENTATION&next=1"
+			class="mt-2 inline-flex items-center rounded-sm border border-ink px-3 py-2 text-xs font-semibold text-ink transition-colors hover:bg-ink hover:text-primary-fg focus-visible:ring-2 focus-visible:ring-focus-ring focus-visible:ring-offset-2 focus-visible:outline-none"
+		>
+			{m.mission_control_ready_empty_cta()}
+		</a>
+	</div>
+{/if}