Implement CSV loading and saving functionality; refactor user list management; update UUID generation and search functions; enhance signal handling in main application.

src/tui.c

@@ -3,7 +3,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include "main.h"
-
+#include "tui.h"
 
 void uartDialog(char *uart_adress, int terminal_x, int terminal_y)
 {
@@ -105,3 +105,25 @@ void uartDialog(char *uart_adress, int terminal_x, int terminal_y)
         }
     }
 }
+
+void mainMenu(list_t *person_list, int terminal_x, int terminal_y)
+{
+    int win_height = 15;
+    int win_width = 80;
+    int start_y = (terminal_y - win_height) / 2;
+    int start_x = (terminal_x - win_width) / 2;
+
+    start_color();
+    init_pair(1, COLOR_BLACK, COLOR_WHITE);
+    init_pair(2, COLOR_WHITE, COLOR_RED);
+
+    WINDOW *uartwin = newwin(win_height, win_width, start_y, start_x);
+
+    wbkgd(uartwin, COLOR_PAIR(1));
+
+    box(uartwin, 0, 0);
+    wattron(uartwin, COLOR_PAIR(1));
+
+    wattroff(uartwin, COLOR_PAIR(1));
+    wrefresh(uartwin);
+}