feat(automation): --automation-server CLI flag plumbed into GUI

src/OrcaSlicer.cpp

@@ -1339,6 +1339,16 @@ int CLI::run(int argc, char **argv)
         //BBS: remove GCodeViewer as separate APP logic
         //params.start_as_gcodeviewer = start_as_gcodeviewer;
 
+        // UI automation server (opt-in). --automation-server enables it;
+        // --automation-server-port overrides the default 13619.
+        ConfigOptionBool* automation_server_option = m_config.option<ConfigOptionBool>("automation_server");
+        if (automation_server_option && automation_server_option->value) {
+            ConfigOptionInt* automation_port_option = m_config.option<ConfigOptionInt>("automation_server_port");
+            int port = (automation_port_option && automation_port_option->value > 0) ? automation_port_option->value : 13619;
+            params.automation_port = port;
+            BOOST_LOG_TRIVIAL(warning) << "UI automation server requested on port " << params.automation_port;
+        }
+
         BOOST_LOG_TRIVIAL(info) << "begin to launch OrcaSlicer GUI soon";
         return Slic3r::GUI::GUI_Run(params);
 #else // SLIC3R_GUI

src/libslic3r/PrintConfig.cpp

@@ -10791,6 +10791,19 @@ CLIMiscConfigDef::CLIMiscConfigDef()
     def->tooltip = L("If enabled, this slicing will be considered using timelapse.");
     def->set_default_value(new ConfigOptionBool(false));
 
+    def = this->add("automation_server", coBool);
+    def->label = L("Enable UI automation server");
+    def->tooltip = L("Start a localhost JSON-RPC server that lets external scripts "
+                     "drive and observe the GUI. For testing/automation only.");
+    def->set_default_value(new ConfigOptionBool(false));
+
+    def = this->add("automation_server_port", coInt);
+    def->label = L("UI automation server port");
+    def->tooltip = L("TCP port for the UI automation server (bound to 127.0.0.1).");
+    def->min = 1;
+    def->cli_params = "port";
+    def->set_default_value(new ConfigOptionInt(13619));
+
 #if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(SLIC3R_GUI)
     /*def = this->add("sw_renderer", coBool);
     def->label = L("Render with a software renderer");

src/slic3r/GUI/GUI_Init.hpp

@@ -32,6 +32,9 @@ struct GUI_InitParams
     //BBS: remove start_as_gcodeviewer logic
 	//bool	                    start_as_gcodeviewer;
 	bool                        input_gcode { false };
+
+    // UI automation: 0 = disabled, else the TCP port for the localhost JSON-RPC server.
+    int                         automation_port { 0 };
 };
 
 int GUI_Run(GUI_InitParams &params);