feat: add is_replay flag to execution pipeline and UI

Detect replayed exchanges via X-Cameleer-Replay header during ingestion,
persist the flag through PostgreSQL and OpenSearch, and surface it in
the dashboard (amber replay icon) and exchange detail chain view.

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

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

@@ -362,6 +362,7 @@ public class OpenSearchIndex implements SearchIndex {
             }).toList());
         }
         map.put("has_trace_data", doc.hasTraceData());
+        map.put("is_replay", doc.isReplay());
         return map;
     }
 
@@ -399,7 +400,8 @@ public class OpenSearchIndex implements SearchIndex {
                 null, // diagramContentHash not stored in index
                 extractHighlight(hit),
                 attributes,
-                Boolean.TRUE.equals(src.get("has_trace_data"))
+                Boolean.TRUE.equals(src.get("has_trace_data")),
+                Boolean.TRUE.equals(src.get("is_replay"))
         );
     }
 

cameleer3-server-app/src/main/java/com/cameleer3/server/app/storage/PostgresExecutionStore.java

@@ -31,10 +31,10 @@ public class PostgresExecutionStore implements ExecutionStore {
                     attributes,
                     error_type, error_category, root_cause_type, root_cause_message,
                     trace_id, span_id,
-                    processors_json, has_trace_data,
+                    processors_json, has_trace_data, is_replay,
                     created_at, updated_at)
                 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?::jsonb, ?::jsonb, ?::jsonb,
-                        ?, ?, ?, ?, ?, ?, ?::jsonb, ?, now(), now())
+                        ?, ?, ?, ?, ?, ?, ?::jsonb, ?, ?, now(), now())
                 ON CONFLICT (execution_id, start_time) DO UPDATE SET
                     status = CASE
                         WHEN EXCLUDED.status IN ('COMPLETED', 'FAILED')
@@ -62,6 +62,7 @@ public class PostgresExecutionStore implements ExecutionStore {
                     span_id = COALESCE(EXCLUDED.span_id, executions.span_id),
                     processors_json = COALESCE(EXCLUDED.processors_json, executions.processors_json),
                     has_trace_data = EXCLUDED.has_trace_data OR executions.has_trace_data,
+                    is_replay = EXCLUDED.is_replay OR executions.is_replay,
                     updated_at = now()
                 """,
                 execution.executionId(), execution.routeId(), execution.agentId(),
@@ -78,7 +79,7 @@ public class PostgresExecutionStore implements ExecutionStore {
                 execution.errorType(), execution.errorCategory(),
                 execution.rootCauseType(), execution.rootCauseMessage(),
                 execution.traceId(), execution.spanId(),
-                execution.processorsJson(), execution.hasTraceData());
+                execution.processorsJson(), execution.hasTraceData(), execution.isReplay());
     }
 
     @Override
@@ -180,7 +181,8 @@ public class PostgresExecutionStore implements ExecutionStore {
                     rs.getString("root_cause_type"), rs.getString("root_cause_message"),
                     rs.getString("trace_id"), rs.getString("span_id"),
                     rs.getString("processors_json"),
-                    rs.getBoolean("has_trace_data"));
+                    rs.getBoolean("has_trace_data"),
+                    rs.getBoolean("is_replay"));
 
     private static final RowMapper<ProcessorRecord> PROCESSOR_MAPPER = (rs, rowNum) ->
             new ProcessorRecord(

cameleer3-server-app/src/main/resources/db/migration/V13__is_replay.sql

@@ -0,0 +1,7 @@
+-- Flag indicating whether this execution is a replayed exchange
+ALTER TABLE executions ADD COLUMN IF NOT EXISTS is_replay BOOLEAN NOT NULL DEFAULT FALSE;
+
+-- Backfill: check inputHeaders JSON for X-Cameleer-Replay header
+UPDATE executions SET is_replay = TRUE
+WHERE input_headers IS NOT NULL
+  AND input_headers::jsonb ? 'X-Cameleer-Replay';

cameleer3-server-core/src/main/java/com/cameleer3/server/core/indexing/SearchIndexer.java

@@ -79,7 +79,7 @@ public class SearchIndexer implements SearchIndexerStats {
                     exec.status(), exec.correlationId(), exec.exchangeId(),
                     exec.startTime(), exec.endTime(), exec.durationMs(),
                     exec.errorMessage(), exec.errorStacktrace(), processorDocs,
-                    exec.attributes(), exec.hasTraceData()));
+                    exec.attributes(), exec.hasTraceData(), exec.isReplay()));
 
             indexedCount.incrementAndGet();
             lastIndexedAt = Instant.now();

cameleer3-server-core/src/main/java/com/cameleer3/server/core/ingestion/IngestionService.java

@@ -102,6 +102,12 @@ public class IngestionService {
 
         boolean hasTraceData = hasAnyTraceData(exec.getProcessors());
 
+        boolean isReplay = false;
+        if (inputSnapshot != null && inputSnapshot.getHeaders() != null) {
+            isReplay = "true".equalsIgnoreCase(
+                    String.valueOf(inputSnapshot.getHeaders().get("X-Cameleer-Replay")));
+        }
+
         return new ExecutionRecord(
                 exec.getExchangeId(), exec.getRouteId(), agentId, applicationName,
                 exec.getStatus() != null ? exec.getStatus().name() : "RUNNING",
@@ -117,7 +123,8 @@ public class IngestionService {
                 exec.getRootCauseType(), exec.getRootCauseMessage(),
                 exec.getTraceId(), exec.getSpanId(),
                 toJsonObject(exec.getProcessors()),
-                hasTraceData
+                hasTraceData,
+                isReplay
         );
     }
 

cameleer3-server-core/src/main/java/com/cameleer3/server/core/search/ExecutionSummary.java

@@ -34,6 +34,7 @@ public record ExecutionSummary(
         String diagramContentHash,
         String highlight,
         Map<String, String> attributes,
-        boolean hasTraceData
+        boolean hasTraceData,
+        boolean isReplay
 ) {
 }

cameleer3-server-core/src/main/java/com/cameleer3/server/core/storage/ExecutionStore.java

@@ -30,7 +30,8 @@ public interface ExecutionStore {
             String rootCauseType, String rootCauseMessage,
             String traceId, String spanId,
             String processorsJson,
-            boolean hasTraceData
+            boolean hasTraceData,
+            boolean isReplay
     ) {}
 
     record ProcessorRecord(

cameleer3-server-core/src/main/java/com/cameleer3/server/core/storage/model/ExecutionDocument.java

@@ -10,7 +10,8 @@ public record ExecutionDocument(
         String errorMessage, String errorStacktrace,
         List<ProcessorDoc> processors,
         String attributes,
-        boolean hasTraceData
+        boolean hasTraceData,
+        boolean isReplay
 ) {
     public record ProcessorDoc(
             String processorId, String processorType, String status,

ui/src/api/schema.d.ts

@@ -1504,6 +1504,7 @@ export interface components {
                 [key: string]: string;
             };
             hasTraceData: boolean;
+            isReplay: boolean;
         };
         SearchResultExecutionSummary: {
             data: components["schemas"]["ExecutionSummary"][];

ui/src/pages/Dashboard/Dashboard.tsx

@@ -1,6 +1,6 @@
 import { useState, useMemo, useCallback } from 'react'
 import { useParams, useNavigate, useSearchParams } from 'react-router'
-import { AlertTriangle, X, Search, Footprints } from 'lucide-react'
+import { AlertTriangle, X, Search, Footprints, RotateCcw } from 'lucide-react'
 import {
   DataTable,
   StatusDot,
@@ -79,6 +79,7 @@ function buildBaseColumns(): Column<Row>[] {
           <StatusDot variant={statusToVariant(row.status)} />
           <MonoText size="xs">{statusLabel(row.status)}</MonoText>
           {row.hasTraceData && <Footprints size={11} color="#3D7C47" style={{ marginLeft: 2, flexShrink: 0 }} />}
+          {row.isReplay && <RotateCcw size={11} color="var(--amber)" style={{ marginLeft: 2, flexShrink: 0 }} />}
         </span>
       ),
     },

ui/src/pages/Exchanges/ExchangeHeader.tsx

@@ -122,7 +122,7 @@ export function ExchangeHeader({ detail, onCorrelatedSelect, onClearSelection }:
         {showChain ? chain.map((ce: any, i: number) => {
             const isCurrent = ce.executionId === detail.executionId;
             const variant = statusVariant(ce.status);
-            const isReplay = ce.attributes?._replay != null;
+            const isReplay = !!ce.isReplay;
             const statusCls =
               variant === 'success' ? styles.chainNodeSuccess
               : variant === 'error' ? styles.chainNodeError