diff --git a/pdf-umbenenner-application/src/test/java/de/gecheckt/pdf/umbenenner/application/port/in/BatchRunOutcomeTest.java b/pdf-umbenenner-application/src/test/java/de/gecheckt/pdf/umbenenner/application/port/in/BatchRunOutcomeTest.java
new file mode 100644
index 0000000..f8a09a7
--- /dev/null
+++ b/pdf-umbenenner-application/src/test/java/de/gecheckt/pdf/umbenenner/application/port/in/BatchRunOutcomeTest.java
@@ -0,0 +1,135 @@
+package de.gecheckt.pdf.umbenenner.application.port.in;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Unit tests for {@link BatchRunOutcome} enumeration.
+ * <p>
+ * Verifies that all required outcome values are present and correctly defined,
+ * and that the business logic methods work as expected.
+ */
+class BatchRunOutcomeTest {
+
+    @Test
+    void allRequiredOutcomeValuesExist() {
+        // Verify all outcome values required by the architecture are present
+        assertNotNull(BatchRunOutcome.SUCCESS);
+        assertNotNull(BatchRunOutcome.LOCK_UNAVAILABLE);
+        assertNotNull(BatchRunOutcome.FAILURE);
+    }
+
+    @Test
+    void successOutcome_hasCorrectMessage() {
+        BatchRunOutcome outcome = BatchRunOutcome.SUCCESS;
+        assertEquals("Batch processing completed successfully", outcome.message());
+    }
+
+    @Test
+    void lockUnavailableOutcome_hasCorrectMessage() {
+        BatchRunOutcome outcome = BatchRunOutcome.LOCK_UNAVAILABLE;
+        assertEquals("Another instance is already running; this run terminates immediately", outcome.message());
+    }
+
+    @Test
+    void failureOutcome_hasCorrectMessage() {
+        BatchRunOutcome outcome = BatchRunOutcome.FAILURE;
+        assertEquals("Batch processing failed", outcome.message());
+    }
+
+    @Test
+    void isSuccess_returnsTrueOnlyForSuccess() {
+        assertTrue(BatchRunOutcome.SUCCESS.isSuccess());
+        assertFalse(BatchRunOutcome.LOCK_UNAVAILABLE.isSuccess());
+        assertFalse(BatchRunOutcome.FAILURE.isSuccess());
+    }
+
+    @Test
+    void isFailure_returnsTrueForFailureAndLockUnavailable() {
+        assertFalse(BatchRunOutcome.SUCCESS.isFailure());
+        assertTrue(BatchRunOutcome.LOCK_UNAVAILABLE.isFailure());
+        assertTrue(BatchRunOutcome.FAILURE.isFailure());
+    }
+
+    @Test
+    void isLockUnavailable_returnsTrueOnlyForLockUnavailable() {
+        assertFalse(BatchRunOutcome.SUCCESS.isLockUnavailable());
+        assertTrue(BatchRunOutcome.LOCK_UNAVAILABLE.isLockUnavailable());
+        assertFalse(BatchRunOutcome.FAILURE.isLockUnavailable());
+    }
+
+    @Test
+    void outcomeEquality_worksByReference() {
+        // Enums have identity-based equality
+        assertSame(BatchRunOutcome.SUCCESS, BatchRunOutcome.SUCCESS);
+        assertNotSame(BatchRunOutcome.SUCCESS, BatchRunOutcome.FAILURE);
+    }
+
+    @Test
+    void outcomeValues_areThreeInTotal() {
+        BatchRunOutcome[] values = BatchRunOutcome.values();
+        assertEquals(3, values.length, "BatchRunOutcome should have exactly 3 values");
+    }
+
+    @Test
+    void outcomeValues_haveCorrectOrder() {
+        BatchRunOutcome[] values = BatchRunOutcome.values();
+        assertSame(BatchRunOutcome.SUCCESS, values[0]);
+        assertSame(BatchRunOutcome.LOCK_UNAVAILABLE, values[1]);
+        assertSame(BatchRunOutcome.FAILURE, values[2]);
+    }
+
+    @Test
+    void outcomeCanBeUsedInSwitch() {
+        BatchRunOutcome outcome = BatchRunOutcome.LOCK_UNAVAILABLE;
+        String result = "";
+
+        switch (outcome) {
+            case SUCCESS -> result = "success";
+            case LOCK_UNAVAILABLE -> result = "lock-unavailable";
+            case FAILURE -> result = "failure";
+        }
+
+        assertEquals("lock-unavailable", result);
+    }
+
+    @Test
+    void toString_returnsName() {
+        assertEquals("SUCCESS", BatchRunOutcome.SUCCESS.toString());
+        assertEquals("LOCK_UNAVAILABLE", BatchRunOutcome.LOCK_UNAVAILABLE.toString());
+        assertEquals("FAILURE", BatchRunOutcome.FAILURE.toString());
+    }
+
+    @Test
+    void enumHashCode_consistency() {
+        // Test hashCode consistency for enum values
+        assertEquals(BatchRunOutcome.SUCCESS.hashCode(), BatchRunOutcome.SUCCESS.hashCode());
+        assertNotEquals(BatchRunOutcome.SUCCESS.hashCode(), BatchRunOutcome.FAILURE.hashCode());
+    }
+
+    @Test
+    void enumEquals_consistency() {
+        // Test equals consistency for enum values
+        assertEquals(BatchRunOutcome.SUCCESS, BatchRunOutcome.SUCCESS);
+        assertNotEquals(BatchRunOutcome.SUCCESS, BatchRunOutcome.FAILURE);
+        // Enums should not equal null
+        assertNotEquals(BatchRunOutcome.SUCCESS, null);
+        // Enums should not equal objects of different types
+        assertNotEquals(BatchRunOutcome.SUCCESS, "SUCCESS");
+    }
+
+    @Test
+    void allMethods_coveredInTests() {
+        // Ensure all public methods are tested at least once with each enum value
+        for (BatchRunOutcome outcome : BatchRunOutcome.values()) {
+            // Just invoke each method to ensure no runtime exceptions
+            assertNotNull(outcome.message());
+            outcome.isSuccess();
+            outcome.isFailure();
+            outcome.isLockUnavailable();
+            assertNotNull(outcome.toString());
+            assertEquals(outcome.hashCode(), outcome.hashCode()); // Test consistency
+        }
+    }
+}
\ No newline at end of file
diff --git a/review-input/.gitignore b/review-input/.gitignore
deleted file mode 100644
index 6d04a38..0000000
--- a/review-input/.gitignore
+++ /dev/null
@@ -1,6 +0,0 @@
-/jacoco-aggregate.xml
-/pdf-umbenenner-adapter-in-cli-mutations.xml
-/pdf-umbenenner-adapter-out-mutations.xml
-/pdf-umbenenner-application-mutations.xml
-/pdf-umbenenner-bootstrap-mutations.xml
-/pdf-umbenenner-domain-mutations.xml