Save The Tree implementation and acceptance work in progress

Preserve production code, regression fixtures, audio assets and provenance, test infrastructure, and the original-completion plan and progress ledger. Final game and Windows acceptance remain pending; excluded local artifacts and native experiments are not part of this snapshot.

scripts/ui/staff_management_panel.gd

@@ -29,6 +29,7 @@ var result_label: Label
 var selected_staff_id: StringName = &""
 
 var _runtime: Variant
+var _audio_submitter := Callable()
 var _style_button: Callable
 var _staff_rows: Array[Dictionary] = []
 var _facility_rows: Array[Dictionary] = []
@@ -147,6 +148,9 @@ func refresh() -> void:
 			_style(button)
 			roster_list.add_child(button)
 			roster_buttons[staff_id] = button
+		# Existing buttons may have been created in hire order. Match the
+		# authoritative report order on every refresh, including after Load.
+		roster_list.move_child(button, live_ids.size() - 1)
 		button.text = "%s  %s%s" % [row.get(&"display_name", staff_id), _role_name(row), "・未配属" if StringName(row.get(&"assigned_facility_id", &"")).is_empty() else ""]
 		button.tooltip_text = "施設へドラッグして配属（選択中の勤務帯を適用）\n%s / %s" % [_facility_name(StringName(row.get(&"assigned_facility_id", &""))), _state_name(row)]
 	for raw_id: Variant in roster_buttons.keys():
@@ -169,6 +173,19 @@ func refresh() -> void:
 		_refresh_editor()
 
 
+## Reset optional presentation without selecting the first roster row.
+## Opening the roster still uses refresh() to choose its normal default.
+func clear_selection() -> void:
+	selected_staff_id = &""
+	_draft_dirty = false
+	if not _built:
+		return
+	result_label.text = ""
+	for raw_id: Variant in roster_buttons:
+		(roster_buttons[raw_id] as Button).set_pressed_no_signal(false)
+	editor_panel.hide()
+
+
 func select_staff(staff_id: StringName) -> void:
 	selected_staff_id = staff_id
 	_draft_dirty = false
@@ -273,7 +290,7 @@ func submit_assignment() -> void:
 		return
 	var key := StringName("%s%08d" % [KEY_PREFIX, _sequence])
 	_sequence += 1
-	var result: Variant = _runtime.call(&"submit_command", ASSIGNMENT_COMMAND, {
+	var result: Variant = _submit_ui_command(ASSIGNMENT_COMMAND, {
 		&"staff_id": selected_staff_id,
 		&"facility_id": _draft_facility_id,
 		&"template_id": _draft_template_id,
@@ -489,3 +506,17 @@ func assign_from_drop(data: Dictionary, facility_id: StringName) -> void:
 	_draft_template_id = StringName(data.get(&"template_id", &"DAY"))
 	_draft_dirty = true
 	submit_assignment()
+
+
+func configure_audio(submitter: Callable) -> void:
+	_audio_submitter = submitter
+
+
+func _submit_ui_command(
+	command_type: StringName, payload: Dictionary = {}, actor_id: StringName = &"player",
+	target_id: StringName = &"", priority := 0, execute_at := -1,
+	idempotency_key: StringName = &""
+) -> Variant:
+	if _audio_submitter.is_valid():
+		return _audio_submitter.call(command_type, payload, actor_id, target_id, priority, execute_at, idempotency_key)
+	return _runtime.call(&"submit_command", command_type, payload, actor_id, target_id, priority, execute_at, idempotency_key)