fix: remove core LogIndexService to fix CI snapshot resolution

LogIndexService in server-core imported LogEntry from cameleer3-common,
but the SNAPSHOT on the registry may not have it yet when the server CI
runs. Moved the dependency to server-app where both the controller and
OpenSearch implementation live.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cameleer3-server-app/src/main/java/com/cameleer3/server/app/search/OpenSearchLogIndex.java

@@ -1,7 +1,6 @@
 package com.cameleer3.server.app.search;
 
 import com.cameleer3.common.model.LogEntry;
-import com.cameleer3.server.core.logging.LogIndexService;
 import jakarta.annotation.PostConstruct;
 import org.opensearch.client.opensearch.OpenSearchClient;
 import org.opensearch.client.opensearch._types.mapping.Property;
@@ -23,7 +22,7 @@ import java.util.List;
 import java.util.Map;
 
 @Repository
-public class OpenSearchLogIndex implements LogIndexService {
+public class OpenSearchLogIndex {
 
     private static final Logger log = LoggerFactory.getLogger(OpenSearchLogIndex.class);
     private static final DateTimeFormatter DAY_FMT = DateTimeFormatter.ofPattern("yyyy-MM-dd")
@@ -92,7 +91,6 @@ public class OpenSearchLogIndex implements LogIndexService {
         }
     }
 
-    @Override
     public void indexBatch(String agentId, String application, List<LogEntry> entries) {
         if (entries == null || entries.isEmpty()) {
             return;