Add graphical CCS Cases 2 prototype

tests/ccs_cases_2_ui_test.gd

@@ -0,0 +1,49 @@
+extends SceneTree
+
+var failures := 0
+
+
+func _initialize() -> void:
+	call_deferred("_run")
+
+
+func _run() -> void:
+	var prior_environment: String = ProjectSettings.get_setting("step3/deployment_environment", "development")
+	ProjectSettings.set_setting("step3/deployment_environment", "uat")
+	var main_screen = load("res://scripts/ui/main.gd").new()
+	root.add_child(main_screen)
+	await process_frame
+	var nav_button := main_screen.sidebar.find_child("NavCcsCases2", true, false) as Button
+	_assert(nav_button != null and nav_button.visible, "UAT should expose a CCS Cases 2 navigation item")
+	_assert(main_screen.screens.has("ccs_cases_2"), "UAT should register the graphical CCS screen")
+	main_screen.queue_free()
+	await process_frame
+	ProjectSettings.set_setting("step3/deployment_environment", prior_environment)
+
+	var host := Control.new()
+	host.size = Vector2(1200.0, 700.0)
+	root.add_child(host)
+	var screen = load("res://scripts/ui/ccs_cases_2_screen.gd").new()
+	host.add_child(screen)
+	await process_frame
+	screen.on_show()
+	await process_frame
+	_assert(screen.current_view == "slot_machine", "CCS Cases 2 should open on the slot machine")
+	_assert(screen.active_scene != null and screen.active_scene.has_signal("continue_requested"), "slot machine should expose an embedded continue signal")
+	_assert(is_equal_approx(screen.stage_root.scale.x, screen.stage_root.scale.y), "the graphical stage should preserve its aspect ratio")
+	screen.active_scene.continue_requested.emit()
+	await process_frame
+	_assert(screen.current_view == "doctor_office", "Continue should open the doctor office without replacing the app scene")
+	screen.on_hide()
+	await process_frame
+	_assert(screen.active_scene == null and screen.current_view.is_empty(), "hiding CCS Cases 2 should release the prototype scene")
+	host.queue_free()
+	await process_frame
+	quit(1 if failures > 0 else 0)
+
+
+func _assert(condition: bool, message: String) -> void:
+	if condition:
+		return
+	failures += 1
+	push_error(message)

tests/ccs_cases_2_ui_test.gd.uid

@@ -0,0 +1 @@
+uid://1voi721kqyhn

tests/progression_feature_flag_test.gd

@@ -20,10 +20,12 @@ func _run() -> void:
 	var prior_environment: String = ProjectSettings.get_setting("step3/deployment_environment", "development")
 	ProjectSettings.set_setting("step3/deployment_environment", "uat")
 	_assert(FeatureFlags.progression_enabled(), "UAT should enable progression")
+	_assert(FeatureFlags.ccs_cases_2_enabled(), "UAT should enable CCS Cases 2")
 
 	for environment in ["prd", "production", "development", "unknown"]:
 		ProjectSettings.set_setting("step3/deployment_environment", environment)
 		_assert(not FeatureFlags.progression_enabled(), "%s should not enable progression" % environment)
+		_assert(not FeatureFlags.ccs_cases_2_enabled(), "%s should not enable CCS Cases 2" % environment)
 
 	ProjectSettings.set_setting("step3/deployment_environment", "prd")
 	var received: Array = []

tests/shell_navigation_test.gd

@@ -14,6 +14,7 @@ func _initialize() -> void:
 	_assert(NavigationRoutes.key_for_screen("player") == "question_bank", "question player should map to Question Bank")
 	_assert(NavigationRoutes.key_for_screen("simulation_results") == "exams", "simulation results should activate Exams")
 	_assert(NavigationRoutes.key_for_screen("ccs_review") == "ccs", "CCS review should activate CCS Cases")
+	_assert(NavigationRoutes.key_for_screen("ccs_cases_2") == "ccs_cases_2", "graphical CCS should activate CCS Cases 2")
 	_assert(NavigationRoutes.key_for_screen("profile") == "performance", "profile should activate Performance")
 	_assert(NavigationRoutes.key_for_screen("map") == "study_plan", "study map should activate Study Plan")
 	_assert(NavigationRoutes.key_for_screen("settings") == "settings", "settings should activate Settings")