feat(admin): surface skipped file count in ImportStatusCard

Adds SkippedFile to the local ImportStatus type and updates
ImportStatusCard to show an amber skipped-count section with a
collapsible filename list in the DONE state. Only rendered when
skipped > 0. i18n keys added for de/en/es.

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

frontend/messages/de.json

@@ -350,6 +350,7 @@
 	"admin_system_import_status_running": "Import läuft…",
 	"admin_system_import_status_done": "Import abgeschlossen",
 	"admin_system_import_status_done_label": "Dokumente verarbeitet",
+	"admin_system_import_skipped_label": "übersprungen",
 	"admin_system_import_status_failed": "Import fehlgeschlagen",
 	"admin_system_import_failed_no_spreadsheet": "Keine Tabellendatei gefunden.",
 	"admin_system_import_failed_internal": "Interner Fehler beim Import.",

frontend/messages/en.json

@@ -350,6 +350,7 @@
 	"admin_system_import_status_running": "Import running…",
 	"admin_system_import_status_done": "Import complete",
 	"admin_system_import_status_done_label": "Documents processed",
+	"admin_system_import_skipped_label": "skipped",
 	"admin_system_import_status_failed": "Import failed",
 	"admin_system_import_failed_no_spreadsheet": "No spreadsheet file found.",
 	"admin_system_import_failed_internal": "Import failed due to an internal error.",

frontend/messages/es.json

@@ -350,6 +350,7 @@
 	"admin_system_import_status_running": "Importación en curso…",
 	"admin_system_import_status_done": "Importación completada",
 	"admin_system_import_status_done_label": "Documentos procesados",
+	"admin_system_import_skipped_label": "omitidos",
 	"admin_system_import_status_failed": "Importación fallida",
 	"admin_system_import_failed_no_spreadsheet": "No se encontró ninguna hoja de cálculo.",
 	"admin_system_import_failed_internal": "Error interno durante la importación.",

frontend/src/routes/admin/system/ImportStatusCard.svelte

@@ -48,6 +48,21 @@ const failureMessage = $derived(
 			</p>
 			<p class="mt-1 text-xs text-green-800">{m.admin_system_import_status_done()}</p>
 		</div>
+		{#if importStatus.skipped > 0}
+			<details class="mb-4 rounded-sm border border-amber-200 bg-amber-50 p-4 text-amber-700">
+				<summary class="cursor-pointer list-none">
+					<p data-testid="skipped-count" class="text-base font-bold">{importStatus.skipped}</p>
+					<p class="font-sans text-xs font-bold tracking-widest text-amber-800 uppercase">
+						{m.admin_system_import_skipped_label()}
+					</p>
+				</summary>
+				<ul class="mt-3 space-y-1">
+					{#each importStatus.skippedFiles as { filename, reason } (filename)}
+						<li class="font-mono text-xs text-ink-2">{filename} — {reason}</li>
+					{/each}
+				</ul>
+			</details>
+		{/if}
 		<button
 			data-import-trigger
 			onclick={ontrigger}

frontend/src/routes/admin/system/ImportStatusCard.svelte.test.ts

@@ -8,6 +8,8 @@ const makeStatus = (overrides: Partial<ImportStatus> = {}): ImportStatus => ({
 	state: 'IDLE',
 	statusCode: 'IMPORT_IDLE',
 	processed: 0,
+	skipped: 0,
+	skippedFiles: [],
 	startedAt: null,
 	...overrides
 });
@@ -128,4 +130,53 @@ describe('ImportStatusCard', () => {
 		await getByRole('button').click();
 		expect(ontrigger).toHaveBeenCalledOnce();
 	});
+
+	it('shows skipped count when DONE and skipped > 0', async () => {
+		const { getByTestId } = render(ImportStatusCard, {
+			props: {
+				importStatus: makeStatus({
+					state: 'DONE',
+					statusCode: 'IMPORT_DONE',
+					processed: 10,
+					skipped: 3,
+					skippedFiles: [
+						{ filename: 'fake.pdf', reason: 'Keine gültige PDF-Signatur' },
+						{ filename: 'other.pdf', reason: 'Keine gültige PDF-Signatur' },
+						{ filename: 'tiny.pdf', reason: 'Keine gültige PDF-Signatur' }
+					]
+				}),
+				ontrigger: () => {}
+			}
+		});
+
+		await expect.element(getByTestId('skipped-count')).toHaveTextContent('3');
+	});
+
+	it('shows skipped filenames in collapsible list when DONE and skipped > 0', async () => {
+		const { getByText } = render(ImportStatusCard, {
+			props: {
+				importStatus: makeStatus({
+					state: 'DONE',
+					statusCode: 'IMPORT_DONE',
+					processed: 5,
+					skipped: 1,
+					skippedFiles: [{ filename: 'fake.pdf', reason: 'Keine gültige PDF-Signatur' }]
+				}),
+				ontrigger: () => {}
+			}
+		});
+
+		await expect.element(getByText('fake.pdf')).toBeInTheDocument();
+	});
+
+	it('does not show skipped section when DONE and skipped is 0', async () => {
+		const { getByTestId } = render(ImportStatusCard, {
+			props: {
+				importStatus: makeStatus({ state: 'DONE', statusCode: 'IMPORT_DONE', processed: 5 }),
+				ontrigger: () => {}
+			}
+		});
+
+		await expect.element(getByTestId('skipped-count')).not.toBeInTheDocument();
+	});
 });

frontend/src/routes/admin/system/types.ts

@@ -1,6 +1,13 @@
+export type SkippedFile = {
+	filename: string;
+	reason: string;
+};
+
 export type ImportStatus = {
 	state: 'IDLE' | 'RUNNING' | 'DONE' | 'FAILED';
 	statusCode: string;
 	processed: number;
+	skipped: number;
+	skippedFiles: SkippedFile[];
 	startedAt: string | null;
 };