feat(frontend): wire OCR trigger + review toggle into transcription panel

- OcrTrigger component rendered in the transcription empty state when
  the document has a file and user has write permission
- Review checkmark toggle on each TranscriptionBlock (turquoise when
  reviewed, muted outline when not). Calls PUT .../review to toggle.
- TranscriptionBlockData type: added source + reviewed fields
- +page.svelte: triggerOcr() and reviewToggle() functions wired up
- Paraglide translations (de/en/es) for review toggle + reviewed count

All 687 frontend tests pass.

Refs #226, #230

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

frontend/messages/de.json

@@ -520,5 +520,8 @@
 	"ocr_error_heading": "OCR fehlgeschlagen",
 	"ocr_error_retry": "Erneut versuchen",
 	"ocr_batch_running": "OCR läuft · {processed} von {total} Dokumente abgeschlossen",
-	"ocr_batch_done": "OCR abgeschlossen · {processed} erfolgreich · {errors} fehlgeschlagen"
+	"ocr_batch_done": "OCR abgeschlossen · {processed} erfolgreich · {errors} fehlgeschlagen",
+	"transcription_block_review": "Als geprüft markieren",
+	"transcription_block_unreview": "Markierung aufheben",
+	"transcription_reviewed_count": "{reviewed} von {total} geprüft"
 }

frontend/messages/en.json

@@ -520,5 +520,8 @@
 	"ocr_error_heading": "OCR failed",
 	"ocr_error_retry": "Try again",
 	"ocr_batch_running": "OCR running · {processed} of {total} documents complete",
-	"ocr_batch_done": "OCR complete · {processed} successful · {errors} failed"
+	"ocr_batch_done": "OCR complete · {processed} successful · {errors} failed",
+	"transcription_block_review": "Mark as reviewed",
+	"transcription_block_unreview": "Unmark as reviewed",
+	"transcription_reviewed_count": "{reviewed} of {total} reviewed"
 }

frontend/messages/es.json

@@ -520,5 +520,8 @@
 	"ocr_error_heading": "OCR fallido",
 	"ocr_error_retry": "Intentar de nuevo",
 	"ocr_batch_running": "OCR en curso · {processed} de {total} documentos completados",
-	"ocr_batch_done": "OCR completado · {processed} exitosos · {errors} fallidos"
+	"ocr_batch_done": "OCR completado · {processed} exitosos · {errors} fallidos",
+	"transcription_block_review": "Marcar como revisado",
+	"transcription_block_unreview": "Desmarcar como revisado",
+	"transcription_reviewed_count": "{reviewed} de {total} revisados"
 }

frontend/src/lib/components/TranscriptionBlock.svelte

@@ -14,6 +14,7 @@ type Props = {
 	text: string;
 	label: string | null;
 	active: boolean;
+	reviewed: boolean;
 	saveState: SaveState;
 	canComment: boolean;
 	currentUserId: string | null;
@@ -21,6 +22,7 @@ type Props = {
 	onFocus: () => void;
 	onDeleteClick: () => void;
 	onRetry: () => void;
+	onReviewToggle: () => void;
 	onMoveUp?: () => void;
 	onMoveDown?: () => void;
 	isFirst?: boolean;
@@ -34,6 +36,7 @@ let {
 	text,
 	label = null,
 	active,
+	reviewed,
 	saveState,
 	canComment,
 	currentUserId,
@@ -41,6 +44,7 @@ let {
 	onFocus,
 	onDeleteClick,
 	onRetry,
+	onReviewToggle,
 	onMoveUp,
 	onMoveDown,
 	isFirst = false,
@@ -239,6 +243,29 @@ function handleTextareaMouseUp() {
 					</span>
 				{/if}
 
+				<!-- Review toggle -->
+				<button
+					type="button"
+					class="cursor-pointer transition-colors {reviewed ? 'text-turquoise hover:text-turquoise/70' : 'text-ink-3 hover:text-turquoise'}"
+					aria-label={reviewed ? m.transcription_block_unreview() : m.transcription_block_review()}
+					title={reviewed ? m.transcription_block_unreview() : m.transcription_block_review()}
+					onclick={onReviewToggle}
+				>
+					<svg
+						class="h-4 w-4"
+						fill={reviewed ? 'currentColor' : 'none'}
+						viewBox="0 0 24 24"
+						stroke="currentColor"
+						stroke-width="1.5"
+					>
+						<path
+							stroke-linecap="round"
+							stroke-linejoin="round"
+							d="M9 12.75L11.25 15 15 9.75M21 12a9 9 0 11-18 0 9 9 0 0118 0z"
+						/>
+					</svg>
+				</button>
+
 				<!-- Delete button -->
 				<button
 					type="button"

frontend/src/lib/components/TranscriptionEditView.svelte

@@ -2,6 +2,7 @@
 import { m } from '$lib/paraglide/messages.js';
 import { SvelteMap } from 'svelte/reactivity';
 import TranscriptionBlock from './TranscriptionBlock.svelte';
+import OcrTrigger from './OcrTrigger.svelte';
 import type { TranscriptionBlockData } from '$lib/types';
 
 type SaveState = 'idle' | 'saving' | 'saved' | 'fading' | 'error';
@@ -12,9 +13,13 @@ type Props = {
 	canComment: boolean;
 	currentUserId: string | null;
 	activeAnnotationId?: string | null;
+	storedScriptType?: string;
+	canRunOcr?: boolean;
 	onBlockFocus: (blockId: string) => void;
 	onSaveBlock: (blockId: string, text: string) => Promise<void>;
 	onDeleteBlock: (blockId: string) => Promise<void>;
+	onReviewToggle: (blockId: string) => Promise<void>;
+	onTriggerOcr?: (scriptType: string) => void;
 };
 
 let {
@@ -23,9 +28,13 @@ let {
 	canComment,
 	currentUserId,
 	activeAnnotationId = null,
+	storedScriptType = '',
+	canRunOcr = false,
 	onBlockFocus,
 	onSaveBlock,
-	onDeleteBlock
+	onDeleteBlock,
+	onReviewToggle,
+	onTriggerOcr
 }: Props = $props();
 
 let activeBlockId: string | null = $state(null);
@@ -282,6 +291,7 @@ $effect(() => {
 						text={block.text}
 						label={block.label}
 						active={activeBlockId === block.id}
+						reviewed={block.reviewed ?? false}
 						saveState={getSaveState(block.id)}
 						canComment={canComment}
 						currentUserId={currentUserId}
@@ -289,6 +299,7 @@ $effect(() => {
 						onFocus={() => handleFocus(block.id)}
 						onDeleteClick={() => handleDelete(block.id)}
 						onRetry={() => handleRetry(block.id)}
+						onReviewToggle={() => onReviewToggle(block.id)}
 						onMoveUp={() => handleMoveUp(block.id)}
 						onMoveDown={() => handleMoveDown(block.id)}
 						isFirst={i === 0}
@@ -323,9 +334,26 @@ $effect(() => {
 					d="M19.5 14.25v-2.625a3.375 3.375 0 00-3.375-3.375h-1.5A1.125 1.125 0 0113.5 7.125v-1.5a3.375 3.375 0 00-3.375-3.375H8.25m0 12.75h7.5m-7.5 3H12M10.5 2.25H5.625c-.621 0-1.125.504-1.125 1.125v17.25c0 .621.504 1.125 1.125 1.125h12.75c.621 0 1.125-.504 1.125-1.125V11.25a9 9 0 00-9-9z"
 				/>
 			</svg>
-			<p class="max-w-xs text-sm leading-relaxed text-ink-3">
-				{m.transcription_empty_cta()}
-			</p>
+
+			{#if canRunOcr && onTriggerOcr}
+				<p class="mb-6 max-w-xs text-sm leading-relaxed text-ink-3">
+					{m.transcription_empty_title()}
+				</p>
+				<div class="w-full max-w-xs">
+					<OcrTrigger
+						existingBlockCount={0}
+						storedScriptType={storedScriptType}
+						onTrigger={onTriggerOcr}
+					/>
+				</div>
+				<p class="mt-4 text-xs text-ink-3">
+					{m.transcription_empty_desc()}
+				</p>
+			{:else}
+				<p class="max-w-xs text-sm leading-relaxed text-ink-3">
+					{m.transcription_empty_cta()}
+				</p>
+			{/if}
 		</div>
 	{/if}
 </div>

frontend/src/lib/types.ts

@@ -35,6 +35,8 @@ export type TranscriptionBlockData = {
 	label: string | null;
 	sortOrder: number;
 	version: number;
+	source: 'MANUAL' | 'OCR';
+	reviewed: boolean;
 	updatedAt?: string | null;
 };
 

frontend/src/routes/documents/[id]/+page.svelte

@@ -118,6 +118,31 @@ async function deleteBlock(blockId: string) {
 	annotationReloadKey++;
 }
 
+async function reviewToggle(blockId: string) {
+	const res = await fetch(`/api/documents/${doc.id}/transcription-blocks/${blockId}/review`, {
+		method: 'PUT'
+	});
+	if (!res.ok) return;
+	const updated = await res.json();
+	transcriptionBlocks = transcriptionBlocks.map((b) => (b.id === blockId ? updated : b));
+}
+
+async function triggerOcr(scriptType: string) {
+	try {
+		const res = await fetch(`/api/documents/${doc.id}/ocr`, {
+			method: 'POST',
+			headers: { 'Content-Type': 'application/json' },
+			body: JSON.stringify({ scriptType })
+		});
+		if (res.ok) {
+			await loadTranscriptionBlocks();
+			annotationReloadKey++;
+		}
+	} catch (e) {
+		console.error('Failed to trigger OCR:', e);
+	}
+}
+
 async function createBlockFromDraw(rect: {
 	x: number;
 	y: number;
@@ -316,9 +341,13 @@ onMount(() => {
 							canComment={canWrite}
 							currentUserId={currentUserId}
 							activeAnnotationId={activeAnnotationId}
+							storedScriptType={doc.scriptType ?? ''}
+							canRunOcr={canWrite && !!doc.filePath}
 							onBlockFocus={handleBlockFocus}
 							onSaveBlock={saveBlock}
 							onDeleteBlock={deleteBlock}
+							onReviewToggle={reviewToggle}
+							onTriggerOcr={triggerOcr}
 						/>
 					{/if}
 				</div>