docs: audit and fix standards docs inconsistencies (v1.2)

AssetFolderSpec.md:
- §8.1: Enemies_{Region} → Enemies (match AddressableRules.cs single group)
- §8.4: fix old menu paths (Tools/Verification → Addressables)
- §10.3: fix Skill SO path (Data/Player/Skills → Data/Progression/Skills)
- §10.4: Charm workflow — remove 'bypass editor tools' recommendation
- §3.2: add SPL_ prefix for SpellSO
- Bump to v1.2

AddressablesLabelSpec.md:
- §6 step 7: fix old Verification menu path
- §7.2/7.3/7.4: unify menu notation (→ to /) and fix old Tools/Verification paths
- Bump to v1.2

AddressKeys.cs:
- Remove duplicate <summary> XML doc comment in Labels class

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Assets/_Game/Scripts/Core/Assets/AddressKeys.cs

@@ -53,13 +53,10 @@ namespace BaseGames.Core.Assets
         // ── Config ScriptableObjects ─────────────────────────────────────
         public const string DataFootstepCatalog   = "Config/FootstepCatalog";
 
-        /// <summary>
-        /// Addressable 标签常量（用于批量加载）。
-        /// 注意：这里是标签名称而非资产地址，不会被 AddressKeyValidator 校验。
-        /// </summary>
         /// <summary>
         /// Addressable Label 常量（用于批量加载与预热）。
         /// 代码中引用 Label 时必须使用此处的常量，禁止硬编码字符串。
+        /// 注意：这里是标签名称而非资产地址，不会被 AddressKeyValidator 校验。
         /// 完整说明见 Docs/Standards/AddressablesLabelSpec.md。
         /// </summary>
         public static class Labels