feat: persist and expose resolvedEndpointUri for execution-level drill-down

Wire resolvedEndpointUri through the full chain:
- V9 migration adds resolved_endpoint_uri column
- IngestionService extracts from ProcessorExecution
- PostgresExecutionStore persists and reads the column
- ProcessorNode includes field in detail API response
- UI schema updated for ProcessorNode and PositionedNode

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

@@ -63,7 +63,8 @@ public class DetailService {
                     parseAttributes(p.attributes()),
                     p.loopIndex(), p.loopSize(),
                     p.splitIndex(), p.splitSize(),
-                    p.multicastIndex()
+                    p.multicastIndex(),
+                    p.resolvedEndpointUri()
             ));
         }
 

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

@@ -27,6 +27,7 @@ public final class ProcessorNode {
     private final Integer splitIndex;
     private final Integer splitSize;
     private final Integer multicastIndex;
+    private final String resolvedEndpointUri;
     private final List<ProcessorNode> children;
 
     public ProcessorNode(String processorId, String processorType, String status,
@@ -35,7 +36,8 @@ public final class ProcessorNode {
                          Map<String, String> attributes,
                          Integer loopIndex, Integer loopSize,
                          Integer splitIndex, Integer splitSize,
-                         Integer multicastIndex) {
+                         Integer multicastIndex,
+                         String resolvedEndpointUri) {
         this.processorId = processorId;
         this.processorType = processorType;
         this.status = status;
@@ -50,6 +52,7 @@ public final class ProcessorNode {
         this.splitIndex = splitIndex;
         this.splitSize = splitSize;
         this.multicastIndex = multicastIndex;
+        this.resolvedEndpointUri = resolvedEndpointUri;
         this.children = new ArrayList<>();
     }
 
@@ -71,5 +74,6 @@ public final class ProcessorNode {
     public Integer getSplitIndex() { return splitIndex; }
     public Integer getSplitSize() { return splitSize; }
     public Integer getMulticastIndex() { return multicastIndex; }
+    public String getResolvedEndpointUri() { return resolvedEndpointUri; }
     public List<ProcessorNode> getChildren() { return List.copyOf(children); }
 }

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

@@ -131,7 +131,8 @@ public class IngestionService {
                     toJson(p.getAttributes()),
                     p.getLoopIndex(), p.getLoopSize(),
                     p.getSplitIndex(), p.getSplitSize(),
-                    p.getMulticastIndex()
+                    p.getMulticastIndex(),
+                    p.getResolvedEndpointUri()
             ));
             if (p.getChildren() != null) {
                 flat.addAll(flattenProcessors(

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

@@ -38,6 +38,7 @@ public interface ExecutionStore {
             String attributes,
             Integer loopIndex, Integer loopSize,
             Integer splitIndex, Integer splitSize,
-            Integer multicastIndex
+            Integer multicastIndex,
+            String resolvedEndpointUri
     ) {}
 }