test(audit): add regression proving STATUS_CHANGED/METADATA_UPDATED are excluded

Cheap insurance for the day someone widens the WHERE clause in
findRolledUpActivityFeed. Suggested by Sara in PR #288 review cycle 1.

Inserts two non-eligible events alongside one TEXT_SAVED and asserts the feed
returns the TEXT_SAVED row only.

Part of #285.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

backend/src/test/java/org/raddatz/familienarchiv/dashboard/AuditLogQueryRepositoryRolledUpTest.java

@@ -135,6 +135,20 @@ class AuditLogQueryRepositoryRolledUpTest {
         });
     }
 
+    @Test
+    void rolledUpFeed_excludes_non_eligible_kinds() {
+        insertUserAndDocs();
+        Instant base = Instant.parse("2026-04-20T12:00:00Z");
+        insertAuditEvent(USER_ID, DOC_ID, "STATUS_CHANGED", base);
+        insertAuditEvent(USER_ID, DOC_ID, "METADATA_UPDATED", base.plusSeconds(60));
+        insertAuditEvent(USER_ID, DOC_ID, "TEXT_SAVED", base.plusSeconds(120));
+
+        List<ActivityFeedRow> rows = auditLogQueryRepository.findRolledUpActivityFeed(USER_ID.toString(), 40);
+
+        assertThat(rows).hasSize(1);
+        assertThat(rows.get(0).getKind()).isEqualTo("TEXT_SAVED");
+    }
+
     @Test
     void rolledUpFeed_exposes_count_and_happenedAtUntil_on_singletons_and_rollups() {
         insertUserAndDocs();