Feature/ecs behavior tree (#188)

* feat(behavior-tree): 完全 ECS 化的行为树系统

* feat(editor-app): 添加行为树可视化编辑器

* chore: 移除 Cocos Creator 扩展目录

* feat(editor-app): 行为树编辑器功能增强

* fix(editor-app): 修复 TypeScript 类型错误

* feat(editor-app): 使用 FlexLayout 重构面板系统并优化资产浏览器

* feat(editor-app): 改进编辑器UI样式并修复行为树执行顺序

* feat(behavior-tree,editor-app): 添加装饰器系统并优化编辑器性能

* feat(behavior-tree,editor-app): 添加属性绑定系统

* feat(editor-app,behavior-tree): 优化编辑器UI并改进行为树功能

* feat(editor-app,behavior-tree): 添加全局黑板系统并增强资产浏览器功能

* feat(behavior-tree,editor-app): 添加运行时资产导出系统

* feat(behavior-tree,editor-app): 添加SubTree系统和资产选择器

* feat(behavior-tree,editor-app): 优化系统架构并改进编辑器文件管理

* fix(behavior-tree,editor-app): 修复SubTree节点错误显示空节点警告

* fix(editor-app): 修复局部黑板类型定义文件扩展名错误

packages/behavior-tree/src/Services/GlobalBlackboardService.ts

@@ -0,0 +1,175 @@
+import { IService } from '@esengine/ecs-framework';
+import { BlackboardValueType } from '../Types/TaskStatus';
+import { BlackboardVariable } from '../Components/BlackboardComponent';
+
+/**
+ * 全局黑板配置
+ */
+export interface GlobalBlackboardConfig {
+    version: string;
+    variables: BlackboardVariable[];
+}
+
+/**
+ * 全局黑板服务
+ *
+ * 提供所有行为树共享的全局变量存储
+ *
+ * 使用方式：
+ * ```typescript
+ * // 注册服务（在 BehaviorTreePlugin.install 中自动完成）
+ * core.services.registerSingleton(GlobalBlackboardService);
+ *
+ * // 获取服务
+ * const blackboard = core.services.resolve(GlobalBlackboardService);
+ * ```
+ */
+export class GlobalBlackboardService implements IService {
+    private variables: Map<string, BlackboardVariable> = new Map();
+
+    dispose(): void {
+        this.variables.clear();
+    }
+
+    /**
+     * 定义全局变量
+     */
+    defineVariable(
+        name: string,
+        type: BlackboardValueType,
+        initialValue: any,
+        options?: {
+            readonly?: boolean;
+            description?: string;
+        }
+    ): void {
+        this.variables.set(name, {
+            name,
+            type,
+            value: initialValue,
+            readonly: options?.readonly ?? false,
+            description: options?.description
+        });
+    }
+
+    /**
+     * 获取全局变量值
+     */
+    getValue<T = any>(name: string): T | undefined {
+        const variable = this.variables.get(name);
+        return variable?.value as T;
+    }
+
+    /**
+     * 设置全局变量值
+     */
+    setValue(name: string, value: any, force: boolean = false): boolean {
+        const variable = this.variables.get(name);
+
+        if (!variable) {
+            return false;
+        }
+
+        if (variable.readonly && !force) {
+            return false;
+        }
+
+        variable.value = value;
+        return true;
+    }
+
+    /**
+     * 检查全局变量是否存在
+     */
+    hasVariable(name: string): boolean {
+        return this.variables.has(name);
+    }
+
+    /**
+     * 删除全局变量
+     */
+    removeVariable(name: string): boolean {
+        return this.variables.delete(name);
+    }
+
+    /**
+     * 获取所有变量名
+     */
+    getVariableNames(): string[] {
+        return Array.from(this.variables.keys());
+    }
+
+    /**
+     * 获取所有变量
+     */
+    getAllVariables(): BlackboardVariable[] {
+        return Array.from(this.variables.values());
+    }
+
+    /**
+     * 清空所有全局变量
+     */
+    clear(): void {
+        this.variables.clear();
+    }
+
+    /**
+     * 批量设置变量
+     */
+    setVariables(values: Record<string, any>): void {
+        for (const [name, value] of Object.entries(values)) {
+            const variable = this.variables.get(name);
+            if (variable && !variable.readonly) {
+                variable.value = value;
+            }
+        }
+    }
+
+    /**
+     * 批量获取变量
+     */
+    getVariables(names: string[]): Record<string, any> {
+        const result: Record<string, any> = {};
+        for (const name of names) {
+            const value = this.getValue(name);
+            if (value !== undefined) {
+                result[name] = value;
+            }
+        }
+        return result;
+    }
+
+    /**
+     * 导出配置
+     */
+    exportConfig(): GlobalBlackboardConfig {
+        return {
+            version: '1.0',
+            variables: Array.from(this.variables.values())
+        };
+    }
+
+    /**
+     * 导入配置
+     */
+    importConfig(config: GlobalBlackboardConfig): void {
+        this.variables.clear();
+        for (const variable of config.variables) {
+            this.variables.set(variable.name, variable);
+        }
+    }
+
+    /**
+     * 序列化为 JSON
+     */
+    toJSON(): string {
+        return JSON.stringify(this.exportConfig(), null, 2);
+    }
+
+    /**
+     * 从 JSON 反序列化
+     */
+    static fromJSON(json: string): GlobalBlackboardConfig {
+        return JSON.parse(json);
+    }
+}