fix: bound remote keypad text

main.c

@@ -955,12 +955,7 @@ VNA_SHELL_FUNCTION(cmd_text)
 {
   if (argc!= 1)
     return;
-  char *p = argv[0];
-  char *t = kp_buf;
-  while (*p) {
-    *t++ = *p++;
-  }
-  *t = 0;
+  ui_set_keypad_text(argv[0]);
   uistat.value = my_atof(kp_buf);
   uistat.freq_value = my_atoui(kp_buf);
   set_numeric_value();

nanovna.h

@@ -1593,6 +1593,7 @@ extern const char * const averageText[];
 extern uint8_t menu_current_level;
 void menu_invoke(int item);
 extern char    kp_buf[];
+void ui_set_keypad_text(const char *text);
 void set_numeric_value(void);
 
 void ui_mode_normal(void);

ui.c

@@ -96,6 +96,12 @@ char    kp_buf[NUMINPUT_LEN+2];  // !!!!!! WARNING size must be + 2 from NUMINPU
 #else
 char    kp_buf[TXTINPUT_LEN+1];  // !!!!!! WARNING size must be + 2 from NUMINPUT_LEN or TXTINPUT_LEN + 1
 #endif
+
+void ui_set_keypad_text(const char *text)
+{
+  plot_printf(kp_buf, sizeof(kp_buf), "%s", text);
+}
+
 static uint8_t ui_mode = UI_NORMAL;
 static uint8_t keypad_mode;
 static char   *kp_help_text = NULL;