feat: add labels to NodeInfo

src/ApiServer.cpp

@@ -95,6 +95,16 @@ void ApiServer::onSystemStatusRequest(AsyncWebServerRequest *request) {
         apiObj["uri"] = std::get<0>(entry);
         apiObj["method"] = std::get<1>(entry);
     }
+    // Include local node labels if present
+    if (ctx.memberList) {
+        auto it = ctx.memberList->find(ctx.hostname);
+        if (it != ctx.memberList->end()) {
+            JsonObject labelsObj = doc["labels"].to<JsonObject>();
+            for (const auto& kv : it->second.labels) {
+                labelsObj[kv.first.c_str()] = kv.second;
+            }
+        }
+    }
     String json;
     serializeJson(doc, json);
     request->send(200, "application/json", json);
@@ -122,6 +132,13 @@ void ApiServer::onClusterMembersRequest(AsyncWebServerRequest *request) {
             apiObj["uri"] = std::get<0>(endpoint);
             methodToStr(endpoint, apiObj);
         }
+        // Add labels if present
+        if (!node.labels.empty()) {
+            JsonObject labelsObj = obj["labels"].to<JsonObject>();
+            for (const auto& kv : node.labels) {
+                labelsObj[kv.first.c_str()] = kv.second;
+            }
+        }
     }
     String json;
     serializeJson(doc, json);

src/ClusterManager.cpp

@@ -118,6 +118,16 @@ void ClusterManager::fetchNodeInfo(const IPAddress& ip) {
                             node.apiEndpoints.push_back(std::make_tuple(uri, method));
                         }
                     }
+                    // Parse labels if present
+                    node.labels.clear();
+                    if (doc["labels"].is<JsonObject>()) {
+                        JsonObject labelsObj = doc["labels"].as<JsonObject>();
+                        for (JsonPair kvp : labelsObj) {
+                            String k = String(kvp.key().c_str());
+                            String v = String(labelsObj[kvp.key()]);
+                            node.labels[k] = v;
+                        }
+                    }
                     Serial.printf("[Cluster] Fetched info for node: %s @ %s\n", node.hostname.c_str(), ip.toString().c_str());
                     break;
                 }

src/NetworkManager.cpp

@@ -54,5 +54,7 @@ void NetworkManager::setupWiFi() {
     }
     self.lastSeen = millis();
     self.status = NodeInfo::ACTIVE;
+    // Initialize a default label for demonstration; users can modify at runtime
+    self.labels["hostname"] = ctx.hostname;
     ctx.fire("node_discovered", &self);
 }