Add mutexes for I2C access in multiple drivers and update cursor handling in char_lcd and wires. Adjust task stack sizes for better resource management.

main/steps/setup_wires.cpp

@@ -23,8 +23,8 @@ void print_wires(WireColor* wires, int editing_idx) {
     }
     lcd_print(3, 1, string_buf);
 
-    // TODO: find a way to indicate without a cursor.
-    // lcd_set_cursor_pos(editing_idx+1, 1);
+    lcd_set_cursor_vis(true);
+    lcd_set_cursor_resting_position(1, editing_idx+1);
 }
 
 void setup_wires(void) {

main/steps/step0.cpp

@@ -34,9 +34,6 @@ static void battery_stats() {
         vTaskDelete(xHandle);
     }
 }
-static void hardware_config() {
-    
-}
 
 // TODO: remove. This is temperary
 static void replay_last() {
@@ -224,8 +221,8 @@ static void _update_display(uint8_t* digits, uint8_t cursor_pos) {
     lcd_print(1, 1, str_buf);
     cursor_pos = MAX(0, MIN(4, cursor_pos));
     int mapped_cursor_pos = CURSOR_POS_MAP[cursor_pos];
-    // TODO: find some way to indicate without a cursor.
-    // lcd_set_cursor_pos(mapped_cursor_pos, 1);
+
+    lcd_set_cursor_resting_position(1, mapped_cursor_pos);
 }
 
 static void set_game_time() {