feat: Implement Live Director System for interactive simulation control

- Added waypoint context updates to handle action queue statuses in `waypoint_context.gd`.
- Introduced new scene file `manwalk.scene` with terrain and stickman setup.
- Created architecture summary for the Live Director System detailing core state transitions, physics mechanics, UI elements, and action execution.
- Specified class contracts and interfaces for the Live Director implementation in `phase_12_live_director.md`.
- Defined state transitions, input handling, and queue editing mechanics for the Live Director feature.

scripts/queue_panel.gd

@@ -10,6 +10,7 @@ extends PopupPanel
 
 const ACTION_REGISTRY := preload("res://scripts/action_registry.gd")
 const STICKMAN_RIG := preload("res://scripts/stickman_rig.gd")
+const ACTION_RUNNER := preload("res://scripts/stickman_action_runner.gd")
 
 signal edit_requested(index: int)
 signal delete_requested(index: int)
@@ -65,14 +66,15 @@ func refresh() -> void:
 	_drag_index = -1
 	_drag_target = -1
 
-	var queue: Array[Dictionary] = []
+	var queue_view: Array[Dictionary] = []
 	if rig != null and is_instance_valid(rig):
-		queue = rig.get_queue()
+		queue_view = rig.get_queue_view()
 	_title_label.text = "Stickman: %s" % (String(rig.name) if rig != null and is_instance_valid(rig) else "?")
-	_empty_label.visible = queue.is_empty()
+	_empty_label.visible = queue_view.is_empty()
 
-	for i: int in queue.size():
-		_rows.append(_make_row(i, queue[i]))
+	for i: int in queue_view.size():
+		var entry: Dictionary = queue_view[i]
+		_rows.append(_make_row(i, entry.get("action", {}), int(entry.get("status", ACTION_RUNNER.QueueStatus.NOT_STARTED))))
 
 
 func _build_ui() -> void:
@@ -129,7 +131,7 @@ func _build_ui() -> void:
 	min_size = Vector2i(460, 360)
 
 
-func _make_row(index: int, action: Dictionary) -> PanelContainer:
+func _make_row(index: int, action: Dictionary, status: int) -> PanelContainer:
 	var panel := PanelContainer.new()
 	panel.add_theme_stylebox_override("panel", _row_style(Color(0.0, 0.0, 0.0, 0.0)))
 
@@ -145,10 +147,15 @@ func _make_row(index: int, action: Dictionary) -> PanelContainer:
 	summary.size_flags_horizontal = Control.SIZE_EXPAND_FILL
 	summary.text = "%s %s" % [ACTION_REGISTRY.icon(String(action.get("type", ""))), ACTION_REGISTRY.summarize(action)]
 	row.add_child(summary)
+	var status_label := Label.new()
+	status_label.text = _status_label(status)
+	status_label.modulate = Color(1.0, 1.0, 1.0, 0.65) if status == ACTION_RUNNER.QueueStatus.COMPLETED or status == ACTION_RUNNER.QueueStatus.INTERRUPTED else Color.WHITE
+	row.add_child(status_label)
 
 	var edit := Button.new()
 	edit.text = "✎"
 	edit.tooltip_text = "Edit"
+	edit.disabled = status == ACTION_RUNNER.QueueStatus.COMPLETED or status == ACTION_RUNNER.QueueStatus.INTERRUPTED
 	edit.pressed.connect(func() -> void: edit_requested.emit(index))
 	row.add_child(edit)
 
@@ -161,6 +168,7 @@ func _make_row(index: int, action: Dictionary) -> PanelContainer:
 	var drag := Button.new()
 	drag.text = "≡"
 	drag.tooltip_text = "Drag to reorder"
+	drag.disabled = status == ACTION_RUNNER.QueueStatus.ACTIVE or status == ACTION_RUNNER.QueueStatus.COMPLETED or status == ACTION_RUNNER.QueueStatus.INTERRUPTED
 	drag.mouse_default_cursor_shape = Control.CURSOR_MOVE
 	drag.gui_input.connect(_on_drag_handle_gui_input.bind(index))
 	row.add_child(drag)
@@ -226,6 +234,20 @@ func _row_style(bg: Color) -> StyleBoxFlat:
 	return sb
 
 
+func _status_label(status: int) -> String:
+	match status:
+		ACTION_RUNNER.QueueStatus.COMPLETED:
+			return "✓ Done"
+		ACTION_RUNNER.QueueStatus.INTERRUPTED:
+			return "↯ Interrupted"
+		ACTION_RUNNER.QueueStatus.ACTIVE:
+			return "▶ Active"
+		ACTION_RUNNER.QueueStatus.PENDING:
+			return "• Pending"
+		_:
+			return ""
+
+
 func _on_drag_handle_gui_input(event: InputEvent, index: int) -> void:
 	if event is InputEventMouseButton and (event as InputEventMouseButton).button_index == MOUSE_BUTTON_LEFT:
 		if (event as InputEventMouseButton).pressed:
@@ -281,9 +303,4 @@ func _move_action(from: int, to: int) -> void:
 	var queue := rig.get_queue()
 	if from < 0 or from >= queue.size() or to < 0 or to >= queue.size():
 		return
-	var action: Dictionary = queue[from]
-	rig.remove_action(from)
-	var target := to
-	if to > from:
-		target -= 1
-	rig.insert_action(target, action)
+	rig.move_action(from, to)