Implement prototype: venue-driven simulation core, scenarios, tests, and playable entrance scene

- Godot 4.3 project scaffold with first-person guard, procedural world,
  interaction HUD, access inspection, radio forms, debug overlay, shift review
- Simulation core: ShiftCoordinator, VenueScenario, EventScheduler, NPCController/FSM,
  AccessVerifier, EscalationManager, RadioSystem, IncidentRecorder,
  ReputationEvaluator, CrowdSystem, EventBus
- Three authored scenarios (Hollywood Blvd building, The Joke Shop, TV studio)
- Custom headless test runner (25 tests) replacing editor-dependent GUT,
  plus GitHub Actions CI
- Documentation workflow live: README, PLAN (tech stack), TODO/DONE, MEMORY

src/game/ui/radio_panel.gd

@@ -0,0 +1,159 @@
+class_name RadioPanel
+extends CanvasLayer
+## Radio report form (PLAN.md Level 4 assist / Level 5 emergency).
+## Emergency calls use hold-to-activate (press and hold 1.6s) to prevent
+## accidental activation.
+
+signal submitted(report: Dictionary, emergency: bool)
+signal cancelled()
+
+const Rules := preload("res://src/core/rules.gd")
+
+var panel: PanelContainer
+var npc_name_label: Label
+var location_edit: LineEdit
+var desc_edit: LineEdit
+var weapons_check: CheckBox
+var danger_option: OptionButton
+var action_button: Button
+var hold_hint: Label
+var status_label: Label
+
+var _emergency := false
+var _npc_id := ""
+var _holding := false
+var _hold_time := 0.0
+const HOLD_NEEDED := 1.6
+var _truth := {"weapons_seen": false, "danger_level": 0}
+
+func _init() -> void:
+	name = "RadioPanel"
+	layer = 20
+	var dim := ColorRect.new()
+	dim.color = Color(0, 0, 0, 0.55)
+	dim.set_anchors_preset(Control.PRESET_FULL_RECT)
+	add_child(dim)
+
+	panel = PanelContainer.new()
+	panel.set_anchors_preset(Control.PRESET_CENTER)
+	add_child(panel)
+
+	var vbox := VBoxContainer.new()
+	panel.add_child(vbox)
+	vbox.add_theme_constant_override("separation", 8)
+
+	var title := Label.new()
+	title.name = "RadioTitle"
+	title.add_theme_font_size_override("font_size", 18)
+	vbox.add_child(title)
+	npc_name_label = Label.new()
+	vbox.add_child(npc_name_label)
+
+	location_edit = LineEdit.new()
+	location_edit.placeholder_text = "Location (e.g. front steps)"
+	location_edit.text = "front entrance"
+	vbox.add_child(location_edit)
+
+	desc_edit = LineEdit.new()
+	desc_edit.placeholder_text = "Describe the person and behavior"
+	vbox.add_child(desc_edit)
+
+	weapons_check = CheckBox.new()
+	weapons_check.text = "Weapon seen"
+	vbox.add_child(weapons_check)
+
+	var danger_row := HBoxContainer.new()
+	vbox.add_child(danger_row)
+	var danger_label := Label.new()
+	danger_label.text = "Danger level: "
+	danger_row.add_child(danger_label)
+	danger_option = OptionButton.new()
+	for i in 4:
+		danger_option.add_item("level %d — %s" % [i, _danger_name(i)], i)
+	danger_option.select(1)
+	danger_row.add_child(danger_option)
+
+	hold_hint = Label.new()
+	hold_hint.text = ""
+	hold_hint.modulate = Color(1, 0.85, 0.55)
+	vbox.add_child(hold_hint)
+
+	status_label = Label.new()
+	status_label.text = ""
+	vbox.add_child(status_label)
+
+	var buttons := HBoxContainer.new()
+	vbox.add_child(buttons)
+	action_button = Button.new()
+	action_button.text = "Send request"
+	action_button.button_down.connect(func(): _start_hold())
+	action_button.button_up.connect(func(): _stop_hold(false))
+	buttons.add_child(action_button)
+	var cancel_btn := Button.new()
+	cancel_btn.text = "Cancel"
+	cancel_btn.pressed.connect(func(): cancelled.emit())
+	buttons.add_child(cancel_btn)
+
+var _title_label: Label
+
+func open(controller: Object, emergency: bool, truth: Dictionary) -> void:
+	_emergency = emergency
+	_truth = truth
+	_npc_id = controller.npc_id if controller else ""
+	npc_name_label.text = "Target: %s" % (controller.profile.display_name if controller else "?")
+	var title: Label = panel.find_child("RadioTitle", true, false)
+	title.text = "EMERGENCY CALL" if emergency else "Security Assistance"
+	weapons_check.button_pressed = truth.get("weapons_seen", false)
+	danger_option.select(truth.get("danger_level", 1))
+	hold_hint.text = "Hold the button for %.1fs" % HOLD_NEEDED if emergency else ""
+	status_label.text = ""
+	action_button.text = "SEND EMERGENCY" if emergency else "Send request"
+	_holding = false
+	_hold_time = 0.0
+	visible = true
+
+func _start_hold() -> void:
+	_holding = _emergency
+	_hold_time = 0.0
+
+func _stop_hold(cancelled_early: bool) -> void:
+	if _holding:
+		_holding = false
+		if not cancelled_early and _hold_time >= HOLD_NEEDED:
+			_submit()
+		else:
+			status_label.text = "Call cancelled - must hold the button."
+
+func _process(delta: float) -> void:
+	if not visible:
+		return
+	if _holding:
+		_hold_time += delta
+		status_label.text = "Holding... %.0f%%" % (minf(1.0, _hold_time / HOLD_NEEDED) * 100.0)
+		if _hold_time >= HOLD_NEEDED:
+			var was := _holding
+			_holding = false
+			if was:
+				_submit()
+
+func _submit() -> void:
+	if not visible:
+		return
+	var report := {
+		"npc_id": _npc_id,
+		"location": location_edit.text,
+		"description": desc_edit.text,
+		"behavior": desc_edit.text,
+		"weapons_seen": weapons_check.button_pressed,
+		"danger_level": danger_option.get_selected_id(),
+	}
+	visible = false
+	submitted.emit(report, _emergency)
+
+func _danger_name(level: int) -> String:
+	match level:
+		0: return "none"
+		1: return "low"
+		2: return "elevated"
+		3: return "immediate threat"
+		_: return "unknown"