feat: remove hostname from labels

examples/neopattern/main.cpp

@@ -24,7 +24,7 @@
 // Create Spore instance with custom labels
 Spore spore({
     {"app", "neopattern"},
-    {"device", "led_strip"},
+    {"role", "led"},
     {"pixels", String(NEOPIXEL_LENGTH)},
     {"pin", String(NEOPIXEL_PIN)}
 });

src/spore/core/NetworkManager.cpp

@@ -107,7 +107,6 @@ void NetworkManager::setupWiFi() {
     }
     ctx.self.lastSeen = millis();
     ctx.self.status = NodeInfo::ACTIVE;
-    ctx.self.labels["hostname"] = ctx.hostname;
 
     // Ensure member list has an entry for this node
     auto &memberList = *ctx.memberList;