Make UI startup failure non-fatal

src/core/main.c

@@ -316,7 +316,9 @@ static int run_interactive_mode(void) {
     }
 #ifdef ENABLE_UI
     g_info("Starting UI server...");
-    start_ui_server(g_context);
+    if (!start_ui_server(g_context)) {
+        g_warning("UI server failed to start; continuing without UI");
+    }
 #endif
 
     // Set up signal handlers

src/core/network.c

@@ -277,8 +277,8 @@ static gboolean on_incoming_connection(GSocketService *service,
     // Queue for processing
     GError *error = NULL;
     if (!g_thread_pool_push(context->worker_pool, conn, &error)) {
-        g_error("Failed to queue connection: %s", error->message);
-        g_error_free(error);
+        g_warning("Failed to queue connection %lu: %s", conn->id, error ? error->message : "unknown error");
+        g_clear_error(&error);
 
         // Remove from table
         g_mutex_lock(&context->network->connection_mutex);

src/ui/ui.c

@@ -4,6 +4,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <microhttpd.h>
 #include "core/plugins.h"
 
@@ -129,7 +130,7 @@ request_handler(void *cls,
 /* ---------- Server lifecycle ---------- */
 static struct MHD_Daemon *ui_daemon = NULL;
 
-void start_ui_server(DeadlightContext *context)
+gboolean start_ui_server(DeadlightContext *context)
 {
     const unsigned short ui_port = 8081;
 
@@ -141,10 +142,12 @@ void start_ui_server(DeadlightContext *context)
                                  context, 
                                  MHD_OPTION_END);
     if (!ui_daemon) {
-        g_error("Failed to start UI daemon on port %u", ui_port);
-    } else {
-        g_info("UI server listening on http://127.0.0.1:%u", ui_port);
+        g_warning("Failed to start UI daemon on port %u: %s", ui_port, g_strerror(errno));
+        return FALSE;
     }
+
+    g_info("UI server listening on http://127.0.0.1:%u", ui_port);
+    return TRUE;
 }
 
 void stop_ui_server(void)

src/ui/ui.h

@@ -2,9 +2,8 @@
 #define UI_H
 
 #include "core/deadlight.h"
-#include <microhttpd.h>
 
-void start_ui_server(DeadlightContext *context); 
+gboolean start_ui_server(DeadlightContext *context);
 
 void stop_ui_server(void);