unify advertised name for mDNS and USB, update configuration settings, and enhance setup tool prompts.

components/ProjectConfig/ProjectConfig/Models.hpp

@@ -103,9 +103,13 @@ struct MDNSConfig_t : BaseConfigModel
 
   void load()
   {
-    // by default, this will be openiris
-    // but we can override it at compile time
-    std::string default_hostname = CONFIG_WIFI_MDNS_HOSTNAME;
+  // Default hostname comes from GENERAL_ADVERTISED_NAME (unified advertised name)
+  std::string default_hostname =
+#ifdef CONFIG_GENERAL_ADVERTISED_NAME
+  CONFIG_GENERAL_ADVERTISED_NAME;
+#else
+  "openiristracker";
+#endif
 
     if (default_hostname.empty())
     {

components/UVCStream/UVCStream/UVCStream.cpp

@@ -1,6 +1,5 @@
 #include "UVCStream.hpp"
 #include <cstdio> // for snprintf
-#include <string>
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 // no deps on main globals here; handover is performed in main before calling setup when needed
@@ -13,21 +12,7 @@ extern "C"
 
   const char *get_uvc_device_name()
   {
-    // Prefer explicit UVC name from Kconfig, fallback to mDNS hostname when empty
-    static std::string cached_name;
-    if (cached_name.empty())
-    {
-      const char *cfg_name = CONFIG_GENERAL_UVC_NAME;
-      if (cfg_name && cfg_name[0] != '\0')
-      {
-        cached_name = cfg_name;
-      }
-      else
-      {
-        cached_name = deviceConfig->getMDNSConfig().hostname;
-      }
-    }
-    return cached_name.c_str();
+    return deviceConfig->getMDNSConfig().hostname.c_str();
   }
 
   const char *get_serial_number(void)