fix(#240): align Mission Control Strip UI with final spec

- Strip heading: "Mitarbeiten" → "Was braucht Aufmerksamkeit?"
- Column 1 heading: "Segmentierung" → "Rahmen einzeichnen"; add green
  skill pill "✓ Ohne Vorkenntnisse"; heading color gray → ink (navy)
- Column 2 heading: "Transkription" → "Text eintippen"; add navy skill
  pill "Kurrent hilfreich"; heading color gray → ink; weekly pulse
  color green → ink (task, not achievement); progress bar track
  bg-gray-200/h-1.5 → bg-ink/20/h-1; add transition-all to fill
- Column 3 heading: "Lesefertig" → "Lesefertig ✓"; heading color
  gray → green-800; add "N Dokumente bereit" subtitle in green; add
  "Alle N lesen →" link at bottom; reviewed % color gray → green-800
- All columns: add CTA buttons at bottom (Jetzt einzeichnen /
  Jetzt tippen); empty state removed from cols 1 & 2 (columns
  hide when empty); empty-state ghost CTA in col 3 restyled as
  bordered button with hover:bg-ink
- Strip: add visibility guard — hides when all three lists are empty
- i18n: add mission_control_seg_skill_pill, mission_control_trans_skill_pill,
  mission_control_ready_subtitle, mission_control_ready_all_cta in
  de/en/es; update heading and CTA copy in all three locales

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

frontend/src/lib/components/ReadyColumn.svelte

@@ -34,20 +34,22 @@ function reviewedPct(doc: TranscriptionQueueItemDTO): number {
 </script>
 
 {#if docs.length > 0}
-	<div class="rounded-sm border border-brand-mint bg-brand-mint/10 p-4">
-		<div class="mb-1 flex items-center gap-2">
-			<h3 class="font-sans text-xs font-bold tracking-widest text-gray-400 uppercase">
-				{m.mission_control_ready_heading()}
-			</h3>
-			{#if weeklyCount > 0}
-				<span class="rounded-full bg-green-50 px-2 py-0.5 text-xs font-semibold text-green-700">
-					{m.mission_control_weekly_pulse({ count: weeklyCount })}
-				</span>
-			{/if}
+	<div class="flex flex-col gap-3 rounded-sm border border-brand-mint bg-brand-mint/10 p-4">
+		<div>
+			<div class="mb-1 flex items-center gap-2">
+				<h3 class="font-sans text-xs font-bold tracking-widest text-green-800 uppercase">
+					{m.mission_control_ready_heading()}
+				</h3>
+				{#if weeklyCount > 0}
+					<span class="rounded-full bg-green-50 px-2 py-0.5 text-xs font-semibold text-green-700">
+						{m.mission_control_weekly_pulse({ count: weeklyCount })}
+					</span>
+				{/if}
+			</div>
+			<p class="text-xs font-semibold text-green-800">
+				{m.mission_control_ready_subtitle({ count: docs.length })}
+			</p>
 		</div>
-		<p class="mt-1 mb-3 text-xs text-gray-400">
-			{m.mission_control_ready_description()}
-		</p>
 		<ul class="space-y-1">
 			{#each docs as doc (doc.id)}
 				<li>
@@ -61,7 +63,7 @@ function reviewedPct(doc: TranscriptionQueueItemDTO): number {
 								<span class="text-xs text-gray-400">{formatDate(doc.documentDate)}</span>
 							{/if}
 							{#if doc.textedBlockCount > 0}
-								<span class="text-xs text-gray-500">
+								<span class="text-xs font-semibold text-green-800">
 									{m.mission_control_reviewed_pct({ pct: reviewedPct(doc) })}
 								</span>
 							{/if}
@@ -70,6 +72,9 @@ function reviewedPct(doc: TranscriptionQueueItemDTO): number {
 				</li>
 			{/each}
 		</ul>
+		<a href="/documents" class="mt-auto block text-xs font-semibold text-green-800 hover:underline">
+			{m.mission_control_ready_all_cta({ count: docs.length })}
+		</a>
 	</div>
 {:else}
 	<div
@@ -77,8 +82,8 @@ function reviewedPct(doc: TranscriptionQueueItemDTO): number {
 	>
 		<p class="text-xs text-gray-400">{m.mission_control_ready_empty()}</p>
 		<a
-			href="/enrich"
-			class="mt-2 inline-flex items-center gap-1 rounded text-xs font-semibold text-brand-navy hover:underline focus-visible:ring-2 focus-visible:ring-brand-navy focus-visible:ring-offset-2 focus-visible:outline-none"
+			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-white focus-visible:ring-2 focus-visible:ring-brand-navy focus-visible:ring-offset-2 focus-visible:outline-none"
 		>
 			{m.mission_control_ready_empty_cta()}
 		</a>