feat: 建筑面板——资源按钮入口+建造升级产出（D6 核心）

src/Core/GameConfig.gd

@@ -47,6 +47,14 @@ var hud_font_size := 32
 var starting_spirit_stones := 500
 ## 开局赠送灵米（新游戏发放）。
 var starting_food := 100
+## 建筑等级上限。
+var building_max_level := 10
+
+## 各建筑参数表（键 = 建筑类型名，值 = {cost, output, upgrade_cost_x, upgrade_output_x}）。
+var building_params: Dictionary = {
+	"mine": {"cost": 200, "output": 10, "upgrade_cost_x": 2.0, "upgrade_output_x": 1.5},
+	"field": {"cost": 100, "output": 5, "upgrade_cost_x": 2.0, "upgrade_output_x": 1.5},
+}
 
 ## 各难度资质权重表（键 = 难度档位，值 = 下品/中品/上品/天骄 权重）。
 var aptitude_weights_by_difficulty: Dictionary = {
@@ -104,6 +112,15 @@ func _load_config() -> void:
 	# 建筑系统
 	starting_spirit_stones = cfg.get_value("building", "starting_spirit_stones", starting_spirit_stones)
 	starting_food = cfg.get_value("building", "starting_food", starting_food)
+	building_max_level = cfg.get_value("building", "max_level", building_max_level)
+	for key in building_params.keys():
+		var p: Dictionary = building_params[key]
+		building_params[key] = {
+			"cost": cfg.get_value("building_" + key, "cost", p["cost"]),
+			"output": cfg.get_value("building_" + key, "output", p["output"]),
+			"upgrade_cost_x": cfg.get_value("building_" + key, "upgrade_cost_x", p["upgrade_cost_x"]),
+			"upgrade_output_x": cfg.get_value("building_" + key, "upgrade_output_x", p["upgrade_output_x"]),
+		}
 	var apt_raw: Variant = cfg.get_value("cultivation", "aptitude_speed", [])
 	if apt_raw is Array and apt_raw.size() == aptitude_speed.size():
 		var arr: Array[float] = []

src/Core/MainGame.gd

@@ -9,6 +9,8 @@ func _ready() -> void:
 	TimeSystem.apply_default_speed()
 	# 开局招募：清空旧数据 → 生成 5 名候选 → 暂停时间等待选择（读档流程接入后由存档还原）
 	DiscipleManager.start_new_game()
+	# 开局建筑：清空旧建筑（读档流程接入后由存档还原）
+	BuildingManager.reset()
 	# 开局赠送资源（数量来自配置；读档流程接入后由存档还原）
 	SectManager.add_spirit_stones(GameConfig.starting_spirit_stones)
 	SectManager.add_food(GameConfig.starting_food)
@@ -20,3 +22,7 @@ func _on_top_bar_hud_sign_return_mainmenu() -> void:
 ## 顶部 HUD 的"管理"按钮请求：打开弟子名录面板。
 func _on_top_bar_hud_sign_open_disciples() -> void:
 	$DisciplesPanel.show_panel()
+
+## 顶部 HUD 的"资源"按钮请求：打开建筑面板。
+func _on_top_bar_hud_sign_open_buildings() -> void:
+	$BuildingsPanel.show_panel()

src/Core/MainGame.tscn

@@ -4,6 +4,7 @@
 [ext_resource type="PackedScene" uid="uid://cahux61qqblje" path="res://src/UI/Panels/DisciplesPanel/DisciplesPanel.tscn" id="1_d5cpm"]
 [ext_resource type="PackedScene" uid="uid://dl0tb68vsw3c6" path="res://src/UI/HUD/TopBarHUD.tscn" id="1_g6xmk"]
 [ext_resource type="PackedScene" uid="uid://cahbpjpnmbcfv" path="res://src/UI/Panels/RecruitPanel/RecruitPanel.tscn" id="1_k5nrm"]
+[ext_resource type="PackedScene" path="res://src/UI/Panels/BuildingsPanel/BuildingsPanel.tscn" id="1_b9dpm"]
 [ext_resource type="Texture2D" uid="uid://cweu17mwblxmg" path="res://assets/sprites/ui/宗门后山.png" id="2_2atgf"]
 [ext_resource type="Texture2D" uid="uid://dnjuv1btbxm4o" path="res://assets/sprites/ui/宗门全景.png" id="5_58g0x"]
 
@@ -35,5 +36,8 @@ layout_mode = 3
 
 [node name="DisciplesPanel" parent="." unique_id=780000015 instance=ExtResource("1_d5cpm")]
 
+[node name="BuildingsPanel" parent="." unique_id=795000012 instance=ExtResource("1_b9dpm")]
+
+[connection signal="sign_open_buildings" from="TopBarHud" to="." method="_on_top_bar_hud_sign_open_buildings"]
 [connection signal="sign_open_disciples" from="TopBarHud" to="." method="_on_top_bar_hud_sign_open_disciples"]
 [connection signal="sign_return_mainmenu" from="TopBarHud" to="." method="_on_top_bar_hud_sign_return_mainmenu"]