feat: 灵根改为1~5根+容量公式(1÷根数)，权重表进配置；文档同步

src/Core/GameConfig.gd

@@ -19,6 +19,8 @@ var recruit_interval_years := 0.1
 var recruit_applicant_count := 3
 ## 天灵根概率（仅天骄资质中再掷一次）。
 var heavenly_root_chance := 0.5
+## 灵根数量权重（按根数-1 索引：1根~5根，和=100 即百分比概率）。
+var root_count_weights: Array[int] = [20, 20, 20, 20, 20]
 
 # —— 修炼系统（对应 cfg 的 [cultivation] 节）——
 ## 基础修炼速度（修为/游戏日）。
@@ -27,8 +29,6 @@ var cultivation_base_speed := 10.0
 var qi_concentration := 1.0
 ## 资质修炼倍率（按下品/中品/上品/天骄索引）。
 var aptitude_speed: Array[float] = [0.6, 1.0, 1.5, 2.0]
-## 灵根数量修炼倍率（按根数-1 索引：1根/2根/3根）。
-var root_count_speed: Array[float] = [1.0, 0.8, 0.6]
 ## 天灵根额外修炼速度倍率。
 var heavenly_bonus := 1.5
 
@@ -55,6 +55,12 @@ func _load_config() -> void:
 	recruit_interval_years = cfg.get_value("recruitment", "recruit_interval_years", recruit_interval_years)
 	recruit_applicant_count = cfg.get_value("recruitment", "recruit_applicant_count", recruit_applicant_count)
 	heavenly_root_chance = cfg.get_value("recruitment", "heavenly_root_chance", heavenly_root_chance)
+	var root_raw: Variant = cfg.get_value("recruitment", "root_count_weights", [])
+	if root_raw is Array and root_raw.size() == root_count_weights.size():
+		var arr_roots: Array[int] = []
+		for w in root_raw:
+			arr_roots.append(int(w))
+		root_count_weights = arr_roots
 	# 修炼系统
 	cultivation_base_speed = cfg.get_value("cultivation", "base_speed", cultivation_base_speed)
 	qi_concentration = cfg.get_value("cultivation", "qi_concentration", qi_concentration)
@@ -65,12 +71,6 @@ func _load_config() -> void:
 		for v in apt_raw:
 			arr.append(float(v))
 		aptitude_speed = arr
-	var root_raw: Variant = cfg.get_value("cultivation", "root_count_speed", [])
-	if root_raw is Array and root_raw.size() == root_count_speed.size():
-		var arr2: Array[float] = []
-		for v in root_raw:
-			arr2.append(float(v))
-		root_count_speed = arr2
 	# 逐档读取难度权重（INI 数组字面量，如 [45, 35, 15, 5]）
 	for key in aptitude_weights_by_difficulty.keys():
 		var raw: Variant = cfg.get_value("recruitment_" + key, "aptitude_weights", [])