Require API question loading

scripts/ui/block_setup.gd

@@ -7,6 +7,8 @@ var selected_system := "All Systems"
 var system_label: Label
 var size_spin: SpinBox
 var mode_option: OptionButton
+var status_label: Label
+var start_button: Button
 
 func _ready() -> void:
 	set_anchors_preset(Control.PRESET_FULL_RECT)
@@ -49,12 +51,17 @@ func _ready() -> void:
 	Style.set_label(note, 16, Style.MUTED)
 	add_child(note)
 
-	var start := Button.new()
-	start.text = "Launch Block"
-	start.custom_minimum_size = Vector2(220, 54)
-	Style.style_primary_button(start)
-	start.pressed.connect(_start_block)
-	add_child(start)
+	status_label = Label.new()
+	status_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
+	Style.set_label(status_label, 16, Style.RED)
+	add_child(status_label)
+
+	start_button = Button.new()
+	start_button.text = "Launch Block"
+	start_button.custom_minimum_size = Vector2(220, 54)
+	Style.style_primary_button(start_button)
+	start_button.pressed.connect(_start_block)
+	add_child(start_button)
 
 
 func on_show(payload: Variant = null) -> void:
@@ -63,8 +70,13 @@ func on_show(payload: Variant = null) -> void:
 	var available := QuestionBankService.get_questions_for_system(selected_system).size()
 	size_spin.max_value = max(1, available)
 	size_spin.value = min(size_spin.value, available)
+	start_button.disabled = available == 0
+	status_label.text = QuestionBankService.last_error if available == 0 else ""
 
 
 func _start_block() -> void:
+	if not QuestionBankService.has_questions():
+		status_label.text = "Questions have not loaded from the API yet."
+		return
 	BlockSessionService.start_block(selected_system, int(size_spin.value), mode_option.get_item_text(mode_option.selected))
 	main.show_screen("player")