fix(import): address non-blocking review feedback — touch target, glossary, edge-case test

- Add min-h-[44px] py-2 to <summary> in ImportStatusCard for 44 px touch target
- Add SkippedFile and skipped count entries to docs/GLOSSARY.md
- Add MassImportServiceTest case: ALREADY_EXISTS fires before file I/O when doc is UPLOADED and file is present on disk

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

backend/src/main/java/org/raddatz/familienarchiv/importing/MassImportService.java

@@ -1,6 +1,8 @@
 package org.raddatz.familienarchiv.importing;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.poi.ss.usermodel.*;
@@ -31,6 +33,7 @@ import javax.xml.parsers.DocumentBuilderFactory;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -53,9 +56,33 @@ public class MassImportService {
 
     public enum State { IDLE, RUNNING, DONE, FAILED }
 
-    public record ImportStatus(State state, String statusCode, @JsonIgnore String message, int processed, LocalDateTime startedAt) {}
+    public record SkippedFile(
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) String filename,
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) String reason
+    ) {}
 
-    private volatile ImportStatus currentStatus = new ImportStatus(State.IDLE, "IMPORT_IDLE", "Kein Import gestartet.", 0, null);
+    public record ImportStatus(
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) State state,
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) String statusCode,
+            @JsonIgnore String message,
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) int processed,
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) List<SkippedFile> skippedFiles,
+            LocalDateTime startedAt
+    ) {
+        // Note: @Schema on a record accessor method is not picked up by SpringDoc; the
+        // "skipped" count is a computed convenience field derived from skippedFiles.size().
+        @JsonProperty("skipped")
+        public int skipped() { return skippedFiles.size(); }
+
+        /** Defensive-copy constructor — callers cannot mutate the stored list after construction. */
+        public ImportStatus {
+            skippedFiles = List.copyOf(skippedFiles);
+        }
+    }
+
+    record ProcessResult(int processed, List<SkippedFile> skippedFiles) {}
+
+    private volatile ImportStatus currentStatus = new ImportStatus(State.IDLE, "IMPORT_IDLE", "Kein Import gestartet.", 0, List.of(), null);
 
     public ImportStatus getStatus() {
         return currentStatus;
@@ -117,22 +144,22 @@ public class MassImportService {
         if (currentStatus.state() == State.RUNNING) {
             throw DomainException.conflict(ErrorCode.IMPORT_ALREADY_RUNNING, "A mass import is already in progress");
         }
-        currentStatus = new ImportStatus(State.RUNNING, "IMPORT_RUNNING", "Import läuft...", 0, LocalDateTime.now());
+        currentStatus = new ImportStatus(State.RUNNING, "IMPORT_RUNNING", "Import läuft...", 0, List.of(), LocalDateTime.now());
         try {
             File spreadsheet = findSpreadsheetFile();
             log.info("Starte Massenimport aus: {}", spreadsheet.getAbsolutePath());
-            int processed = processRows(readSpreadsheet(spreadsheet));
+            ProcessResult result = processRows(readSpreadsheet(spreadsheet));
             currentStatus = new ImportStatus(State.DONE, "IMPORT_DONE",
-                    "Import abgeschlossen. " + processed + " Dokumente verarbeitet.",
-                    processed, currentStatus.startedAt());
+                    "Import abgeschlossen. " + result.processed() + " Dokumente verarbeitet.",
+                    result.processed(), result.skippedFiles(), currentStatus.startedAt());
         } catch (NoSpreadsheetException e) {
             log.error("Massenimport fehlgeschlagen: keine Tabellendatei", e);
             currentStatus = new ImportStatus(State.FAILED, "IMPORT_FAILED_NO_SPREADSHEET",
-                    "Fehler: " + e.getMessage(), 0, currentStatus.startedAt());
+                    "Fehler: " + e.getMessage(), 0, List.of(), currentStatus.startedAt());
         } catch (Exception e) {
             log.error("Massenimport fehlgeschlagen", e);
             currentStatus = new ImportStatus(State.FAILED, "IMPORT_FAILED_INTERNAL",
-                    "Fehler: " + e.getMessage(), 0, currentStatus.startedAt());
+                    "Fehler: " + e.getMessage(), 0, List.of(), currentStatus.startedAt());
         }
     }
 
@@ -254,8 +281,10 @@ public class MassImportService {
 
     // --- Import logic (works on neutral List<String> rows) ---
 
-    private int processRows(List<List<String>> rows) {
-        int count = 0;
+    private ProcessResult processRows(List<List<String>> rows) {
+        int processed = 0;
+        List<SkippedFile> skippedFiles = new ArrayList<>();
+
         for (int i = 1; i < rows.size(); i++) { // skip header row
             List<String> cells = rows.get(i);
             String index = getCell(cells, colIndex);
@@ -266,18 +295,58 @@ public class MassImportService {
             if (fileOnDisk.isEmpty()) {
                 log.warn("Datei nicht gefunden, importiere nur Metadaten: {}", filename);
             }
-            importSingleDocument(cells, fileOnDisk, filename, index);
-            count++;
+
+            if (fileOnDisk.isPresent()) {
+                try {
+                    if (!isPdfMagicBytes(fileOnDisk.get())) {
+                        log.warn("Überspringe {}: Datei beginnt nicht mit %PDF-Signatur", filename);
+                        skippedFiles.add(new SkippedFile(filename, "INVALID_PDF_SIGNATURE"));
+                        continue;
+                    }
+                } catch (IOException e) {
+                    log.error("Fehler beim Prüfen der Magic-Bytes für {}", filename, e);
+                    skippedFiles.add(new SkippedFile(filename, "FILE_READ_ERROR"));
+                    continue;
+                }
+            }
+
+            Optional<String> skipReason = importSingleDocument(cells, fileOnDisk, filename, index);
+            if (skipReason.isPresent()) {
+                skippedFiles.add(new SkippedFile(filename, skipReason.get()));
+            } else {
+                processed++;
+            }
         }
-        return count;
+        return new ProcessResult(processed, skippedFiles);
     }
 
+    // package-private: Mockito spy in tests can override to inject IOException
+    InputStream openFileStream(File file) throws IOException {
+        return new FileInputStream(file);
+    }
+
+    private boolean isPdfMagicBytes(File file) throws IOException {
+        try (InputStream is = openFileStream(file)) {
+            byte[] header = is.readNBytes(4);
+            return header.length == 4
+                    && header[0] == 0x25  // %
+                    && header[1] == 0x50  // P
+                    && header[2] == 0x44  // D
+                    && header[3] == 0x46; // F
+        }
+    }
+
+    /**
+     * Imports a single document row.
+     *
+     * @return empty Optional on success; an Optional containing the skip reason on failure/skip.
+     */
     @Transactional
-    protected void importSingleDocument(List<String> cells, Optional<File> file, String originalFilename, String index) {
+    protected Optional<String> importSingleDocument(List<String> cells, Optional<File> file, String originalFilename, String index) {
         Optional<Document> existing = documentService.findByOriginalFilename(originalFilename);
         if (existing.isPresent() && existing.get().getStatus() != DocumentStatus.PLACEHOLDER) {
             log.info("Dokument {} existiert bereits, überspringe.", originalFilename);
-            return;
+            return Optional.of("ALREADY_EXISTS");
         }
 
         String archiveBox    = getCell(cells, colBox);
@@ -313,7 +382,7 @@ public class MassImportService {
                 status = DocumentStatus.UPLOADED;
             } catch (Exception e) {
                 log.error("S3 Upload Fehler für {}", file.get().getName(), e);
-                return;
+                return Optional.of("S3_UPLOAD_FAILED");
             }
         }
 
@@ -355,6 +424,7 @@ public class MassImportService {
             thumbnailAsyncRunner.dispatchAfterCommit(saved.getId());
         }
         log.info("Importiert{}: {}", file.isEmpty() ? " (nur Metadaten)" : "", originalFilename);
+        return Optional.empty();
     }
 
     // --- Helpers ---

backend/src/test/java/org/raddatz/familienarchiv/importing/MassImportServiceTest.java

@@ -135,7 +135,7 @@ class MassImportServiceTest {
     @Test
     void runImportAsync_throwsConflict_whenAlreadyRunning() {
         MassImportService.ImportStatus running = new MassImportService.ImportStatus(
-                MassImportService.State.RUNNING, "IMPORT_RUNNING", "Running...", 0, LocalDateTime.now());
+                MassImportService.State.RUNNING, "IMPORT_RUNNING", "Running...", 0, List.of(), LocalDateTime.now());
         ReflectionTestUtils.setField(service, "currentStatus", running);
 
         assertThatThrownBy(() -> service.runImportAsync())
@@ -154,9 +154,76 @@ class MassImportServiceTest {
                 .build();
         when(documentService.findByOriginalFilename("doc001.pdf")).thenReturn(Optional.of(existing));
 
-        service.importSingleDocument(minimalCells("doc001.pdf"), Optional.empty(), "doc001.pdf", "doc001");
+        Optional<String> result = service.importSingleDocument(minimalCells("doc001.pdf"), Optional.empty(), "doc001.pdf", "doc001");
 
         verify(documentService, never()).save(any());
+        assertThat(result).isPresent().contains("ALREADY_EXISTS");
+    }
+
+    // ─── importSingleDocument — already-exists guard fires before file I/O ─────
+
+    @Test
+    void importSingleDocument_skipsWithAlreadyExists_whenDocumentUploadedAndFileIsPresent(@TempDir Path tempDir) throws Exception {
+        // Document already exists with status UPLOADED (not PLACEHOLDER).
+        // A physical PDF file is also present on disk (valid magic bytes).
+        // Expected: ALREADY_EXISTS is returned and no S3 upload is attempted —
+        // the guard fires before any file I/O, so no partial processing occurs.
+        Document existing = Document.builder()
+                .id(UUID.randomUUID())
+                .originalFilename("present.pdf")
+                .status(DocumentStatus.UPLOADED)
+                .build();
+        when(documentService.findByOriginalFilename("present.pdf")).thenReturn(Optional.of(existing));
+
+        Path physicalFile = tempDir.resolve("present.pdf");
+        byte[] pdfHeader = {0x25, 0x50, 0x44, 0x46, 0x2D}; // %PDF-
+        Files.write(physicalFile, pdfHeader);
+
+        Optional<String> result = service.importSingleDocument(
+                minimalCells("present.pdf"), Optional.of(physicalFile.toFile()), "present.pdf", "present");
+
+        assertThat(result).isPresent().contains("ALREADY_EXISTS");
+        verify(s3Client, never()).putObject(any(PutObjectRequest.class), any(RequestBody.class));
+        verify(documentService, never()).save(any());
+    }
+
+    // ─── importSingleDocument — S3 failure surfaced in skippedFiles ──────────
+
+    @Test
+    void runImportAsync_addsS3UploadFailed_toSkippedFiles_whenS3Throws(@TempDir Path tempDir) throws Exception {
+        byte[] pdfHeader = {0x25, 0x50, 0x44, 0x46, 0x2D}; // %PDF-
+        Files.write(tempDir.resolve("upload_fail.pdf"), pdfHeader);
+        buildMinimalImportXlsx(tempDir, "upload_fail.pdf");
+        ReflectionTestUtils.setField(service, "importDir", tempDir.toString());
+        when(documentService.findByOriginalFilename("upload_fail.pdf")).thenReturn(Optional.empty());
+        doThrow(new RuntimeException("S3 unavailable"))
+                .when(s3Client).putObject(any(PutObjectRequest.class), any(RequestBody.class));
+
+        service.runImportAsync();
+
+        assertThat(service.getStatus().skipped()).isEqualTo(1);
+        assertThat(service.getStatus().skippedFiles())
+                .extracting(MassImportService.SkippedFile::filename, MassImportService.SkippedFile::reason)
+                .containsExactly(org.assertj.core.groups.Tuple.tuple("upload_fail.pdf", "S3_UPLOAD_FAILED"));
+    }
+
+    @Test
+    void runImportAsync_addsAlreadyExists_toSkippedFiles_whenDocumentAlreadyUploaded(@TempDir Path tempDir) throws Exception {
+        buildMinimalImportXlsx(tempDir, "existing.pdf");
+        ReflectionTestUtils.setField(service, "importDir", tempDir.toString());
+        Document existing = Document.builder()
+                .id(UUID.randomUUID())
+                .originalFilename("existing.pdf")
+                .status(DocumentStatus.UPLOADED)
+                .build();
+        when(documentService.findByOriginalFilename("existing.pdf")).thenReturn(Optional.of(existing));
+
+        service.runImportAsync();
+
+        assertThat(service.getStatus().skipped()).isEqualTo(1);
+        assertThat(service.getStatus().skippedFiles())
+                .extracting(MassImportService.SkippedFile::reason)
+                .containsExactly("ALREADY_EXISTS");
     }
 
     // ─── importSingleDocument — create new document (metadata only) ───────────
@@ -208,7 +275,7 @@ class MassImportServiceTest {
     }
 
     @Test
-    void importSingleDocument_returnsEarly_whenS3UploadFails(@TempDir Path tempDir) throws Exception {
+    void importSingleDocument_returnsS3UploadFailed_whenS3UploadFails(@TempDir Path tempDir) throws Exception {
         Path tempFile = tempDir.resolve("fail.pdf");
         Files.write(tempFile, "data".getBytes());
 
@@ -216,10 +283,11 @@ class MassImportServiceTest {
         doThrow(new RuntimeException("S3 error"))
                 .when(s3Client).putObject(any(PutObjectRequest.class), any(RequestBody.class));
 
-        service.importSingleDocument(
+        Optional<String> result = service.importSingleDocument(
                 minimalCells("fail.pdf"), Optional.of(tempFile.toFile()), "fail.pdf", "fail");
 
         verify(documentService, never()).save(any());
+        assertThat(result).isPresent().contains("S3_UPLOAD_FAILED");
     }
 
     // ─── importSingleDocument — sender handling ───────────────────────────────
@@ -325,8 +393,8 @@ class MassImportServiceTest {
     @Test
     void processRows_returnsZero_whenOnlyHeaderRow() {
         List<List<String>> rows = List.of(List.of("header", "col1"));
-        Integer result = ReflectionTestUtils.invokeMethod(service, "processRows", rows);
-        assertThat(result).isEqualTo(0);
+        MassImportService.ProcessResult result = ReflectionTestUtils.invokeMethod(service, "processRows", rows);
+        assertThat(result.processed()).isEqualTo(0);
     }
 
     @Test
@@ -335,8 +403,8 @@ class MassImportServiceTest {
                 List.of("header"),
                 minimalCells("")  // blank index
         );
-        Integer result = ReflectionTestUtils.invokeMethod(service, "processRows", rows);
-        assertThat(result).isEqualTo(0);
+        MassImportService.ProcessResult result = ReflectionTestUtils.invokeMethod(service, "processRows", rows);
+        assertThat(result.processed()).isEqualTo(0);
         verify(documentService, never()).findByOriginalFilename(any());
     }
 
@@ -349,9 +417,9 @@ class MassImportServiceTest {
                 List.of("header"),
                 minimalCells("doc001")  // no dot → appends ".pdf"
         );
-        Integer result = ReflectionTestUtils.invokeMethod(service, "processRows", rows);
+        MassImportService.ProcessResult result = ReflectionTestUtils.invokeMethod(service, "processRows", rows);
 
-        assertThat(result).isEqualTo(1);
+        assertThat(result.processed()).isEqualTo(1);
         verify(documentService).findByOriginalFilename("doc001.pdf");
     }
 
@@ -364,9 +432,9 @@ class MassImportServiceTest {
                 List.of("header"),
                 minimalCells("doc002.pdf")  // has dot → used as-is
         );
-        Integer result = ReflectionTestUtils.invokeMethod(service, "processRows", rows);
+        MassImportService.ProcessResult result = ReflectionTestUtils.invokeMethod(service, "processRows", rows);
 
-        assertThat(result).isEqualTo(1);
+        assertThat(result.processed()).isEqualTo(1);
         verify(documentService).findByOriginalFilename("doc002.pdf");
     }
 
@@ -525,6 +593,67 @@ class MassImportServiceTest {
         assertThat(result).isEqualTo("hello");
     }
 
+    // ─── PDF magic byte validation regression ─────────────────────────────────
+
+    @Test
+    void runImportAsync_uploadsValidPdf_andSkipsFakeOne(@TempDir Path tempDir) throws Exception {
+        setupOneValidOneFakeImport(tempDir);
+
+        service.runImportAsync();
+
+        verify(s3Client, times(1)).putObject(any(PutObjectRequest.class), any(RequestBody.class));
+    }
+
+    @Test
+    void runImportAsync_setsSkippedCount_toOne_whenOneFakeFile(@TempDir Path tempDir) throws Exception {
+        setupOneValidOneFakeImport(tempDir);
+
+        service.runImportAsync();
+
+        assertThat(service.getStatus().skipped()).isEqualTo(1);
+    }
+
+    @Test
+    void runImportAsync_includesRejectedFilename_inSkippedFiles(@TempDir Path tempDir) throws Exception {
+        setupOneValidOneFakeImport(tempDir);
+
+        service.runImportAsync();
+
+        assertThat(service.getStatus().skippedFiles())
+                .extracting(MassImportService.SkippedFile::filename)
+                .contains("fake.pdf");
+    }
+
+    @Test
+    void runImportAsync_skipsFile_whenShorterThanFourBytes(@TempDir Path tempDir) throws Exception {
+        Files.write(tempDir.resolve("tiny.pdf"), new byte[]{0x25, 0x50, 0x44}); // only 3 bytes
+        buildMinimalImportXlsx(tempDir, "tiny.pdf");
+        ReflectionTestUtils.setField(service, "importDir", tempDir.toString());
+        lenient().when(documentService.findByOriginalFilename(any())).thenReturn(Optional.empty());
+
+        service.runImportAsync();
+
+        assertThat(service.getStatus().skipped()).isEqualTo(1);
+    }
+
+    @Test
+    void runImportAsync_skipsFile_whenMagicBytesCheckThrowsIOException(@TempDir Path tempDir) throws Exception {
+        Files.writeString(tempDir.resolve("unreadable.pdf"), "some content");
+        buildMinimalImportXlsx(tempDir, "unreadable.pdf");
+        ReflectionTestUtils.setField(service, "importDir", tempDir.toString());
+        lenient().when(documentService.findByOriginalFilename(any())).thenReturn(Optional.empty());
+
+        MassImportService spyService = spy(service);
+        doThrow(new java.io.IOException("simulated read error")).when(spyService).openFileStream(any(File.class));
+
+        spyService.runImportAsync();
+
+        assertThat(spyService.getStatus().skipped()).isEqualTo(1);
+        assertThat(spyService.getStatus().skippedFiles())
+                .extracting(MassImportService.SkippedFile::reason)
+                .containsExactly("FILE_READ_ERROR");
+    }
+
     // ─── readOds — XXE security regression ───────────────────────────────────
 
     // Security regression — do not remove.
@@ -621,4 +750,28 @@ class MassImportServiceTest {
         }
         return destination.toFile();
     }
+
+    private void setupOneValidOneFakeImport(Path tempDir) throws Exception {
+        byte[] pdfHeader = {0x25, 0x50, 0x44, 0x46, 0x2D}; // %PDF-
+        Files.write(tempDir.resolve("real.pdf"), pdfHeader);
+        Files.writeString(tempDir.resolve("fake.pdf"), "not a pdf");
+        buildMinimalImportXlsx(tempDir, "real.pdf", "fake.pdf");
+        ReflectionTestUtils.setField(service, "importDir", tempDir.toString());
+        when(documentService.findByOriginalFilename(any())).thenReturn(Optional.empty());
+        when(documentService.save(any())).thenAnswer(inv -> inv.getArgument(0));
+    }
+
+    private void buildMinimalImportXlsx(Path dir, String... filenames) throws Exception {
+        Path xlsx = dir.resolve("import.xlsx");
+        try (XSSFWorkbook wb = new XSSFWorkbook()) {
+            org.apache.poi.ss.usermodel.Sheet sheet = wb.createSheet("Sheet1");
+            sheet.createRow(0).createCell(0).setCellValue("Index");
+            for (int i = 0; i < filenames.length; i++) {
+                sheet.createRow(i + 1).createCell(0).setCellValue(filenames[i]);
+            }
+            try (OutputStream out = Files.newOutputStream(xlsx)) {
+                wb.write(out);
+            }
+        }
+    }
 }

backend/src/test/java/org/raddatz/familienarchiv/user/AdminControllerTest.java

@@ -47,7 +47,7 @@ class AdminControllerTest {
     @WithMockUser(authorities = "ADMIN")
     void importStatus_returns200_withStatusCode_whenAdmin() throws Exception {
         MassImportService.ImportStatus status = new MassImportService.ImportStatus(
-                MassImportService.State.IDLE, "IMPORT_IDLE", "Kein Import gestartet.", 0, null);
+                MassImportService.State.IDLE, "IMPORT_IDLE", "Kein Import gestartet.", 0, List.of(), null);
         when(massImportService.getStatus()).thenReturn(status);
 
         mockMvc.perform(get("/api/admin/import-status"))
@@ -61,7 +61,7 @@ class AdminControllerTest {
     @WithMockUser(authorities = "ADMIN")
     void importStatus_messageField_notPresentInApiResponse() throws Exception {
         MassImportService.ImportStatus status = new MassImportService.ImportStatus(
-                MassImportService.State.IDLE, "IMPORT_IDLE", "Kein Import gestartet.", 0, null);
+                MassImportService.State.IDLE, "IMPORT_IDLE", "Kein Import gestartet.", 0, List.of(), null);
         when(massImportService.getStatus()).thenReturn(status);
 
         mockMvc.perform(get("/api/admin/import-status"))

docs/GLOSSARY.md

@@ -57,6 +57,10 @@ _See also [Annotation](#annotation-documentannotation)._
 
 **Mass import** — an asynchronous batch process (`MassImportService`) that reads an Excel or ODS file and creates `Person`s, `Tag`s, and `PLACEHOLDER` `Document`s in one shot. Only one import can run at a time (`IMPORT_ALREADY_RUNNING` error if attempted concurrently).
 
+**SkippedFile** (`MassImportService.SkippedFile`) — a file that was presented for import but not processed, recorded with a `filename` and a `reason` code. Possible reasons: `INVALID_PDF_SIGNATURE` (magic-byte validation failed), `S3_UPLOAD_FAILED` (file upload to MinIO/S3 threw an exception), `FILE_READ_ERROR` (the file could not be opened for reading), or `ALREADY_EXISTS` (a document with the same filename already exists in the archive with a status other than `PLACEHOLDER`).
+
+**skipped count** — the total number of `SkippedFile` entries accumulated during a single import run (`ImportStatus.skipped()`). Shown in the amber warning section of the Import Status Card in the admin UI; a value of zero suppresses the section entirely.
+
 **Transcription queue** — the set of `Document`s and `TranscriptionBlock`s awaiting work, computed on-the-fly from `Document`/`Block` status. Three views: segmentation queue, transcription queue, ready-to-read queue. NOT a persistent entity — no `transcription_queues` table exists.
 _See also [DocumentStatus lifecycle](#documentstatus-lifecycle)._
 

frontend/messages/de.json

@@ -352,6 +352,11 @@
 	"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",
+	"import_reason_invalid_pdf_signature": "Keine gültige PDF-Signatur",
+	"import_reason_file_read_error": "Fehler beim Lesen der Datei",
+	"import_reason_s3_upload_failed": "Upload-Fehler (S3)",
+	"import_reason_already_exists": "Bereits importiert",
 	"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

@@ -352,6 +352,11 @@
 	"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",
+	"import_reason_invalid_pdf_signature": "Invalid PDF signature",
+	"import_reason_file_read_error": "File read error",
+	"import_reason_s3_upload_failed": "Upload error (S3)",
+	"import_reason_already_exists": "Already imported",
 	"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

@@ -352,6 +352,11 @@
 	"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",
+	"import_reason_invalid_pdf_signature": "Firma PDF no válida",
+	"import_reason_file_read_error": "Error al leer el archivo",
+	"import_reason_s3_upload_failed": "Error de carga (S3)",
+	"import_reason_already_exists": "Ya importado",
 	"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

@@ -15,6 +15,14 @@ const failureMessage = $derived(
 		? m.admin_system_import_failed_no_spreadsheet()
 		: m.admin_system_import_failed_internal()
 );
+
+function reasonLabel(code: string): string {
+	if (code === 'INVALID_PDF_SIGNATURE') return m.import_reason_invalid_pdf_signature();
+	if (code === 'FILE_READ_ERROR') return m.import_reason_file_read_error();
+	if (code === 'S3_UPLOAD_FAILED') return m.import_reason_s3_upload_failed();
+	if (code === 'ALREADY_EXISTS') return m.import_reason_already_exists();
+	return code;
+}
 </script>
 
 <div class="rounded-sm border border-line bg-surface p-6 shadow-sm">
@@ -48,6 +56,41 @@ const failureMessage = $derived(
 			</p>
 			<p class="mt-1 text-xs text-green-800">{m.admin_system_import_status_done()}</p>
 		</div>
+		<div aria-live="polite">
+			{#if importStatus.skipped > 0}
+				<details class="mb-4 rounded-sm border border-warning/40 bg-warning/10 p-4 text-amber-900">
+					<summary class="flex min-h-[44px] cursor-pointer list-none items-center gap-2 py-2">
+						<svg
+							aria-hidden="true"
+							class="details-chevron h-4 w-4 shrink-0 motion-safe:transition-transform"
+							viewBox="0 0 16 16"
+							fill="none"
+							stroke="currentColor"
+							stroke-width="2"
+							stroke-linecap="round"
+							stroke-linejoin="round"
+						>
+							<path d="M6 4l4 4-4 4" />
+						</svg>
+						<div>
+							<span data-testid="skipped-count" class="block text-base font-bold"
+								>{importStatus.skipped}</span
+							>
+							<span class="block font-sans text-xs font-bold tracking-widest uppercase">
+								{m.admin_system_import_skipped_label()}
+							</span>
+						</div>
+					</summary>
+					<ul class="mt-3 max-h-64 space-y-1 overflow-y-auto">
+						{#each importStatus.skippedFiles as skipped (skipped.filename)}
+							<li class="font-mono text-sm text-ink-2">
+								{skipped.filename} — {reasonLabel(skipped.reason)}
+							</li>
+						{/each}
+					</ul>
+				</details>
+			{/if}
+		</div>
 		<button
 			data-import-trigger
 			onclick={ontrigger}
@@ -79,3 +122,9 @@ const failureMessage = $derived(
 		</button>
 	{/if}
 </div>
+
+<style>
+details[open] .details-chevron {
+	transform: rotate(90deg);
+}
+</style>

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 +130,106 @@ 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: 'INVALID_PDF_SIGNATURE' },
+						{ filename: 'other.pdf', reason: 'INVALID_PDF_SIGNATURE' },
+						{ filename: 'tiny.pdf', reason: 'INVALID_PDF_SIGNATURE' }
+					]
+				}),
+				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: 'INVALID_PDF_SIGNATURE' }]
+				}),
+				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();
+	});
+
+	it('does not show skipped section when RUNNING even with skipped > 0', async () => {
+		const { getByTestId } = render(ImportStatusCard, {
+			props: {
+				importStatus: makeStatus({
+					state: 'RUNNING',
+					statusCode: 'IMPORT_RUNNING',
+					processed: 5,
+					skipped: 2,
+					skippedFiles: [
+						{ filename: 'a.pdf', reason: 'INVALID_PDF_SIGNATURE' },
+						{ filename: 'b.pdf', reason: 'INVALID_PDF_SIGNATURE' }
+					]
+				}),
+				ontrigger: () => {}
+			}
+		});
+
+		await expect.element(getByTestId('skipped-count')).not.toBeInTheDocument();
+	});
+
+	it('does not show skipped section when FAILED even with skipped > 0', async () => {
+		const { getByTestId } = render(ImportStatusCard, {
+			props: {
+				importStatus: makeStatus({
+					state: 'FAILED',
+					statusCode: 'IMPORT_FAILED_INTERNAL',
+					skipped: 1,
+					skippedFiles: [{ filename: 'bad.pdf', reason: 'INVALID_PDF_SIGNATURE' }]
+				}),
+				ontrigger: () => {}
+			}
+		});
+
+		await expect.element(getByTestId('skipped-count')).not.toBeInTheDocument();
+	});
+
+	it('shows raw reason code for unknown skip reasons', async () => {
+		const { getByText } = render(ImportStatusCard, {
+			props: {
+				importStatus: makeStatus({
+					state: 'DONE',
+					statusCode: 'IMPORT_DONE',
+					processed: 1,
+					skipped: 1,
+					skippedFiles: [{ filename: 'odd.pdf', reason: 'SOME_FUTURE_CODE' }]
+				}),
+				ontrigger: () => {}
+			}
+		});
+
+		await expect.element(getByText('SOME_FUTURE_CODE', { exact: false })).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;
 };