Behebe Darstellungsfehler der Statusicons und Stale-Summary-Bug

Statusicons (Bug 2): Emoji-Codepunkte werden durch BMP-Zeichen ersetzt
(✔ ⚠ ✘ ►), die in JavaFX auf Windows zuverlässig gerendert werden.
Die Statusspalte erhält eine farbige Cell-Factory (grün/orange/rot/grau).

Stale Summary (Bug 1): observerSummary wird zu Beginn jedes Laufs
zurückgesetzt, damit eine abgebrochene Vorgänger-Zusammenfassung
nicht als Ergebnis des neuen Laufs erscheint.

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

pdf-umbenenner-adapter-in-gui/src/main/java/de/gecheckt/pdf/umbenenner/adapter/in/gui/batchrun/GuiBatchRunCoordinator.java

@@ -193,6 +193,7 @@ public final class GuiBatchRunCoordinator {
     private void executeRun(Path configFilePath) {
         LOG.info("GUI-Verarbeitungslauf: Worker-Thread gestartet für Konfiguration {}.",
                 configFilePath);
+        observerSummary.set(null);
         BatchRunProgressObserver observer = buildDispatchingObserver();
         BatchRunCancellationToken token = cancellationRequested::get;
         GuiBatchRunLaunchOutcome outcome;

pdf-umbenenner-adapter-in-gui/src/main/java/de/gecheckt/pdf/umbenenner/adapter/in/gui/batchrun/GuiBatchRunResultRow.java

@@ -59,16 +59,17 @@ public record GuiBatchRunResultRow(
     }
 
     /**
-     * Returns the status icon for this row, mirroring the specification.
+     * Returns the status icon for this row as a Basic Multilingual Plane character
+     * that renders reliably in JavaFX on Windows.
      *
-     * @return the corresponding emoji icon
+     * @return the corresponding status character
      */
     public String statusIcon() {
         return switch (status) {
-            case SUCCESS -> "\u2705";            // ✅
+            case SUCCESS -> "\u2714";       // ✔ HEAVY CHECK MARK
-            case FAILED_RETRYABLE -> "\u26A0\uFE0F"; // ⚠️
+            case FAILED_RETRYABLE -> "\u26A0"; // ⚠ WARNING SIGN (no variation selector)
-            case FAILED_PERMANENT -> "\u274C";   // ❌
+            case FAILED_PERMANENT -> "\u2718"; // ✘ HEAVY BALLOT X
-            case SKIPPED -> "\u23ED\uFE0F";       // ⏭️
+            case SKIPPED -> "\u25BA";          // ► BLACK RIGHT-POINTING POINTER
         };
     }
 }

pdf-umbenenner-adapter-in-gui/src/main/java/de/gecheckt/pdf/umbenenner/adapter/in/gui/batchrun/GuiBatchRunTab.java

@@ -28,6 +28,7 @@ import javafx.scene.control.ScrollPane;
 import javafx.scene.control.Tab;
 import javafx.scene.control.TableCell;
 import javafx.scene.control.TableColumn;
+import javafx.scene.control.TableRow;
 import javafx.scene.control.TableView;
 import javafx.scene.control.TextArea;
 import javafx.scene.layout.BorderPane;
@@ -295,6 +296,22 @@ public final class GuiBatchRunTab {
         TableColumn<GuiBatchRunResultRow, String> iconCol = new TableColumn<>("Status");
         iconCol.setCellValueFactory(data -> new SimpleStringProperty(data.getValue().statusIcon()));
         iconCol.setPrefWidth(64);
+        iconCol.setCellFactory(col -> new TableCell<GuiBatchRunResultRow, String>() {
+            @Override
+            protected void updateItem(String icon, boolean empty) {
+                super.updateItem(icon, empty);
+                if (empty || icon == null) {
+                    setText(null);
+                    setStyle(null);
+                    return;
+                }
+                setText(icon);
+                TableRow<GuiBatchRunResultRow> tableRow = getTableRow();
+                GuiBatchRunResultRow data = tableRow != null ? tableRow.getItem() : null;
+                String color = data != null ? statusColor(data.status()) : "#000000";
+                setStyle("-fx-text-fill: " + color + "; -fx-alignment: CENTER; -fx-font-size: 14;");
+            }
+        });
 
         TableColumn<GuiBatchRunResultRow, String> nameCol = new TableColumn<>("Originaldateiname");
         nameCol.setCellValueFactory(data -> new SimpleStringProperty(data.getValue().originalFileName()));
@@ -338,6 +355,15 @@ public final class GuiBatchRunTab {
         });
     }
 
+    private static String statusColor(DocumentCompletionStatus status) {
+        return switch (status) {
+            case SUCCESS -> "#2e7d32";
+            case FAILED_RETRYABLE -> "#e65100";
+            case FAILED_PERMANENT -> "#c62828";
+            case SKIPPED -> "#757575";
+        };
+    }
+
     private static String formatDuration(Duration duration) {
         double seconds = duration.toMillis() / 1000.0;
         if (seconds < 10) {

pdf-umbenenner-adapter-in-gui/src/test/java/de/gecheckt/pdf/umbenenner/adapter/in/gui/batchrun/GuiBatchRunCoordinatorTest.java

@@ -247,10 +247,10 @@ class GuiBatchRunCoordinatorTest {
 
     @Test
     void resultRowIcons_matchSpecification() {
-        assertEquals("\u2705", row(DocumentCompletionStatus.SUCCESS).statusIcon());
+        assertEquals("\u2714", row(DocumentCompletionStatus.SUCCESS).statusIcon());
-        assertEquals("\u26A0\uFE0F", row(DocumentCompletionStatus.FAILED_RETRYABLE).statusIcon());
+        assertEquals("\u26A0", row(DocumentCompletionStatus.FAILED_RETRYABLE).statusIcon());
-        assertEquals("\u274C", row(DocumentCompletionStatus.FAILED_PERMANENT).statusIcon());
+        assertEquals("\u2718", row(DocumentCompletionStatus.FAILED_PERMANENT).statusIcon());
-        assertEquals("\u23ED\uFE0F", row(DocumentCompletionStatus.SKIPPED).statusIcon());
+        assertEquals("\u25BA", row(DocumentCompletionStatus.SKIPPED).statusIcon());
     }
 
     @Test