Require API question loading

scripts/ui/study_map.gd

@@ -8,6 +8,8 @@ var zone_list: GridContainer
 func _ready() -> void:
 	set_anchors_preset(Control.PRESET_FULL_RECT)
 	add_theme_constant_override("separation", 14)
+	if not QuestionBankService.questions_changed.is_connected(_refresh_zones):
+		QuestionBankService.questions_changed.connect(_refresh_zones)
 
 	var title := Label.new()
 	title.text = "Study Map"
@@ -27,9 +29,31 @@ func _ready() -> void:
 
 
 func on_show(_payload: Variant = null) -> void:
+	_refresh_zones()
+
+
+func _refresh_zones() -> void:
+	if zone_list == null:
+		return
+
 	for child in zone_list.get_children():
 		child.queue_free()
 
+	if QuestionBankService.is_loading:
+		var loading := Label.new()
+		loading.text = "Loading question bank..."
+		Style.set_label(loading, 20, Style.AMBER)
+		zone_list.add_child(loading)
+		return
+
+	if not QuestionBankService.has_questions():
+		var empty := Label.new()
+		empty.text = QuestionBankService.last_error if QuestionBankService.last_error != "" else "No API questions loaded."
+		empty.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
+		Style.set_label(empty, 20, Style.RED)
+		zone_list.add_child(empty)
+		return
+
 	var systems: Array[String] = ["All Systems"]
 	systems.append_array(QuestionBankService.get_systems())
 	var stats: Dictionary = ProfileService.get_profile().get("system_stats", {})