重构管理界面为通用标签面板

- 移除 DisciplePanel，改用可复用的 ManagerPanel 占位标签（×4）
- 新增 InventoryPanel 并接入管理页第 5 个标签
- 新增炼丹、外务、订单等子面板占位场景与资源样式
- 样式资源重命名：disciple_info_* 改为 manager_info_*

resources/disciple_info_label_settings.tres

@@ -1,11 +0,0 @@
-[gd_resource type="LabelSettings" format=3 uid="uid://dur4uye3m0ffd"]
-
-[ext_resource type="FontFile" uid="uid://dv0mnlx0fqjad" path="res://assets/fonts/lxgw-wenkai-v1.522/LXGWWenKaiMono-Light.ttf" id="1_f7lwv"]
-
-[resource]
-line_spacing = 5.0
-paragraph_spacing = 1.0
-font = ExtResource("1_f7lwv")
-font_size = 24
-font_color = Color(0, 0, 0, 1)
-shadow_color = Color(0.9128214, 0.63396364, 0.6629118, 1)

resources/manager_info_label_settings.tres

@@ -0,0 +1,10 @@
+[gd_resource type="LabelSettings" format=3 uid="uid://dur4uye3m0ffd"]
+
+[ext_resource type="FontFile" uid="uid://duxymf2xy66em" path="res://assets/fonts/lxgw-wenkai-v1.522/LXGWWenKai-Regular.ttf" id="1_ks1xp"]
+
+[resource]
+line_spacing = 5.0
+paragraph_spacing = 1.0
+font = ExtResource("1_ks1xp")
+font_size = 24
+font_color = Color(0, 0, 0, 1)

resources/manager_info_style_box_flat.tres

@@ -1,9 +1,9 @@
 [gd_resource type="StyleBoxFlat" format=3 uid="uid://kxc0y8146vlk"]
 
 [resource]
-bg_color = Color(0.3552159, 0.6357343, 0.60719687, 0.60784316)
+bg_color = Color(0.70980394, 0.91764706, 0.84313726, 1)
 border_width_left = 10
 border_width_top = 10
 border_width_right = 10
 border_width_bottom = 10
-border_color = Color(0, 0.6212424, 0.9274143, 0.24705882)
+border_color = Color(0.763118, 0.67405456, 0.91787714, 1)