refactor: derive processor-route mapping from diagrams instead of executions

Store application_name in route_diagrams at ingestion time (V7 migration),
resolve from agent registry same as ExecutionController. Move
findProcessorRouteMapping from ExecutionStore to DiagramStore using a
JSONB query that extracts node IDs directly from stored RouteGraph
definitions. This makes the mapping available as soon as diagrams are
sent, before any executions are recorded.

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

cameleer3-server-app/src/main/java/com/cameleer3/server/app/controller/ApplicationConfigController.java

@@ -13,7 +13,7 @@ import com.cameleer3.server.core.agent.AgentRegistryService;
 import com.cameleer3.server.core.agent.AgentState;
 import com.cameleer3.server.core.agent.CommandReply;
 import com.cameleer3.server.core.agent.CommandType;
-import com.cameleer3.server.core.storage.ExecutionStore;
+import com.cameleer3.server.core.storage.DiagramStore;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import io.swagger.v3.oas.annotations.Operation;
@@ -49,18 +49,18 @@ public class ApplicationConfigController {
     private final AgentRegistryService registryService;
     private final ObjectMapper objectMapper;
     private final AuditService auditService;
-    private final ExecutionStore executionStore;
+    private final DiagramStore diagramStore;
 
     public ApplicationConfigController(PostgresApplicationConfigRepository configRepository,
                                        AgentRegistryService registryService,
                                        ObjectMapper objectMapper,
                                        AuditService auditService,
-                                       ExecutionStore executionStore) {
+                                       DiagramStore diagramStore) {
         this.configRepository = configRepository;
         this.registryService = registryService;
         this.objectMapper = objectMapper;
         this.auditService = auditService;
-        this.executionStore = executionStore;
+        this.diagramStore = diagramStore;
     }
 
     @GetMapping
@@ -112,7 +112,7 @@ public class ApplicationConfigController {
             description = "Returns a map of processorId → routeId for all processors seen in this application")
     @ApiResponse(responseCode = "200", description = "Mapping returned")
     public ResponseEntity<Map<String, String>> getProcessorRouteMapping(@PathVariable String application) {
-        return ResponseEntity.ok(executionStore.findProcessorRouteMapping(application));
+        return ResponseEntity.ok(diagramStore.findProcessorRouteMapping(application));
     }
 
     @PostMapping("/{application}/test-expression")

cameleer3-server-app/src/main/java/com/cameleer3/server/app/controller/DiagramController.java

@@ -1,6 +1,8 @@
 package com.cameleer3.server.app.controller;
 
 import com.cameleer3.common.graph.RouteGraph;
+import com.cameleer3.server.core.agent.AgentInfo;
+import com.cameleer3.server.core.agent.AgentRegistryService;
 import com.cameleer3.server.core.ingestion.IngestionService;
 import com.cameleer3.server.core.ingestion.TaggedDiagram;
 import com.fasterxml.jackson.core.JsonProcessingException;
@@ -35,10 +37,14 @@ public class DiagramController {
     private static final Logger log = LoggerFactory.getLogger(DiagramController.class);
 
     private final IngestionService ingestionService;
+    private final AgentRegistryService registryService;
     private final ObjectMapper objectMapper;
 
-    public DiagramController(IngestionService ingestionService, ObjectMapper objectMapper) {
+    public DiagramController(IngestionService ingestionService,
+                             AgentRegistryService registryService,
+                             ObjectMapper objectMapper) {
         this.ingestionService = ingestionService;
+        this.registryService = registryService;
         this.objectMapper = objectMapper;
     }
 
@@ -48,10 +54,11 @@ public class DiagramController {
     @ApiResponse(responseCode = "202", description = "Data accepted for processing")
     public ResponseEntity<Void> ingestDiagrams(@RequestBody String body) throws JsonProcessingException {
         String agentId = extractAgentId();
+        String applicationName = resolveApplicationName(agentId);
         List<RouteGraph> graphs = parsePayload(body);
 
         for (RouteGraph graph : graphs) {
-            ingestionService.ingestDiagram(new TaggedDiagram(agentId, graph));
+            ingestionService.ingestDiagram(new TaggedDiagram(agentId, applicationName, graph));
         }
 
         return ResponseEntity.accepted().build();
@@ -62,6 +69,11 @@ public class DiagramController {
         return auth != null ? auth.getName() : "";
     }
 
+    private String resolveApplicationName(String agentId) {
+        AgentInfo agent = registryService.findById(agentId);
+        return agent != null ? agent.application() : "";
+    }
+
     private List<RouteGraph> parsePayload(String body) throws JsonProcessingException {
         String trimmed = body.strip();
         if (trimmed.startsWith("[")) {