fix: register JavaTimeModule on DetailService ObjectMapper

Same issue as IngestionService — the ObjectMapper deserializing
processors_json lacked JavaTimeModule, causing Instant parsing to fail
silently and falling back to the broken flat reconstruction.

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

cameleer3-server-core/src/main/java/com/cameleer3/server/core/detail/DetailService.java

@@ -12,6 +12,7 @@ import java.util.*;
 public class DetailService {
 
     private static final ObjectMapper JSON = new ObjectMapper()
+            .findAndRegisterModules()
             .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
     private static final TypeReference<Map<String, String>> STR_MAP = new TypeReference<>() {};
     private static final TypeReference<List<ProcessorExecution>> PROCESSOR_EXEC_LIST = new TypeReference<>() {};