企业级多智能体“共享黑板”（Blackboard Architecture）状态一致性治理实战：破解复杂协作通信风暴、版本快照与乐观并发冲突解决

+---------------------------------------------------------------------------------+
|                       共享黑板数据空间 (Blackboard Store)                        |
|  - 全局元数据: 任务ID / 业务目标 / 截止时间 / 版本号 (v14)                        |
|  - 权威事实 (Facts): ERP 订单项 / WMS 库位物理库存 / MES 机床传感器状态          |
|  - 协作假设 (Hypotheses): MES 备选排产工单 / 采购替代料加急调拨提案              |
|  - 事件日志 (Event Stream): 状态演进记录与单调递增审计轨迹                       |
+---------------------------------------------------------------------------------+
                                       ^
                   (读写分离 / 乐观并发控制 OCC 原子写入)
                                       |
+---------------------------------------------------------------------------------+
|                       黑板控制器与仲裁器 (Moderator)                             |
|  - 知识源自适应竞标评估 (Bidding)  - 乐观并发 CAS 校验  - 不可逆动作门禁隔离    |
+---------------------------------------------------------------------------------+
          ^                           ^                           ^
 (事件广播 / 激活评估)       (事件广播 / 激活评估)       (事件广播 / 激活评估)
          |                           |                           |
+--------------------+      +--------------------+      +--------------------+
|   ERP 计划 Agent   |      |   MES 排产 Agent   |      |   WMS 仓储 Agent   |
| (产出: BOM 事实)   |      | (产出: 工位预占方案)|      | (产出: 物料锁定承诺)|
+--------------------+      +--------------------+      +--------------------+

// 知识源触发契约接口
interface KnowledgeSourceContract<TState> {
  readonly name: string;
  readonly domain: 'erp' | 'mes' | 'wms' | 'procurement';
  // 判定当前黑板状态是否需要自身介入
  canContribute(blackboard: Readonly<TState>): boolean;
  // 计算自身贡献的置信度与优先级得分 (0~100)
  evaluateBid(blackboard: Readonly<TState>): number;
  // 执行具体的自治推理，生成状态补丁提议
  execute(blackboard: Readonly<TState>): Promise<StatePatch<TState>>;
}

冲突裁决的三级阶梯：

• 无交集属性自动合并（Orthogonal Auto-Merge）：若 Agent 提交的修改字段与并发期间发生变化的字段在语义与数据路径上完全正交（例如采购 Agent 仅仅修改了 procurement.inTransit，而 MES Agent 修改了 production.stationId），且经过业务约束守卫验证互不制约，则自动执行补丁变基（Rebase）并合并；
• 基线重载与增量重推（Contextual Re-eval）：若修改字段存在重叠或依赖冲突，丢弃陈旧补丁，为该 Agent 重新拉取最新的黑板版本快照，仅将变化部分（Delta Diff）作为反思上下文注入该 Agent，触发轻量快速重算；
• 黑板仲裁器裁决（Moderator Arbitration）：当持续发生两次以上竞态冲突，且涉及生产安全或高额预算时，控制器拉起独立仲裁 Agent 执行权威判定，强制冻结一方提议并记录审计日志。

/**
 * 企业级多智能体共享黑板核心引擎
 * 实现强类型状态存储、单调递增版本戳、乐观并发控制（OCC）与事件驱动竞标
 */

// 1. 黑板数据结构与类型定义
export interface BlackboardState {
  readonly taskId: string;
  readonly version: number;
  readonly updatedAt: string;
  // 权威事实空间 (不可篡改的系统真值)
  facts: {
    orderId: string;
    targetQuantity: number;
    deadline: string;
    verifiedInventory: number;
    availableWorkstations: string[];
    isMaterialShortage: boolean;
  };
  // 协作推演假设空间
  hypotheses: {
    productionPlan?: {
      stationId: string;
      batchSize: number;
      estimatedMinutes: number;
    };
    procurementPlan?: {
      supplierId: string;
      replenishQuantity: number;
      leadTimeHours: number;
    };
  };
  // 最终决策与承诺
  commitments: {
    isPlanApproved: boolean;
    dispatchId?: string;
    reasoningTrace: string[];
  };
}

// 增量状态补丁提案
export interface StatePatch {
  readonly sourceAgent: string;
  readonly baseVersion: number;
  readonly patchDescription: string;
  readonly apply: (currentState: BlackboardState) => void;
}

// 知识源 (Knowledge Source) 接口契约
export interface KnowledgeSource {
  readonly name: string;
  readonly priority: number;
  // 判定是否满足触发条件
  canContribute(blackboard: BlackboardState): boolean;
  // 执行领域推理并返回状态补丁提议
  producePatch(blackboard: BlackboardState): Promise<StatePatch>;
}

// 2. 生产级黑板调度核心引擎
export class EnterpriseBlackboardEngine {
  private state: BlackboardState;
  private readonly knowledgeSources: KnowledgeSource[] = [];
  private readonly maxIterations: number;
  private readonly eventHistory: Array<{
    version: number;
    agent: string;
    description: string;
    timestamp: string;
  }> = [];

  constructor(initialState: BlackboardState, maxIterations = 15) {
    this.state = JSON.parse(JSON.stringify(initialState));
    this.maxIterations = maxIterations;
  }

  // 注册专家知识源
  public registerKnowledgeSource(ks: KnowledgeSource): void {
    this.knowledgeSources.push(ks);
  }

  // 获取当前只读快照 (深拷贝以确保快照隔离)
  public getSnapshot(): BlackboardState {
    return JSON.parse(JSON.stringify(this.state));
  }

  // 尝试应用增量补丁 (乐观并发控制 OCC 核心校验)
  public applyPatch(patch: StatePatch): { success: boolean; conflictReason?: string } {
    if (patch.baseVersion !== this.state.version) {
      return {
        success: false,
        conflictReason: `OCC Conflict: Patch based on v${patch.baseVersion}, but current is v${this.state.version}`,
      };
    }

    // 在影子对象上尝试执行补丁变更
    const shadow: BlackboardState = JSON.parse(JSON.stringify(this.state));
    patch.apply(shadow);

    // 校验通过，原子升级全局状态
    const nextVersion = this.state.version + 1;
    (shadow as { version: number }).version = nextVersion;
    (shadow as { updatedAt: string }).updatedAt = new Date().toISOString();
    this.state = shadow;

    this.eventHistory.push({
      version: nextVersion,
      agent: patch.sourceAgent,
      description: patch.patchDescription,
      timestamp: this.state.updatedAt,
    });

    return { success: true };
  }

  // 启动黑板自适应演进协同循环
  public async runCollaborationLoop(): Promise<BlackboardState> {
    let iterations = 0;

    while (iterations < this.maxIterations) {
      iterations++;

      // 1. 检查终止条件: 决策已审批达成
      if (this.state.commitments.isPlanApproved) {
        break;
      }

      // 2. 知识源条件评估与竞标 (Bidding)
      const currentSnapshot = this.getSnapshot();
      const eligibleSources = this.knowledgeSources
        .filter((ks) => ks.canContribute(currentSnapshot))
        .sort((a, b) => b.priority - a.priority); // 按优先级降序

      if (eligibleSources.length === 0) {
        // 无可用知识源可继续推动黑板演进，提前收敛或挂起
        break;
      }

      // 3. 选取最高优先级知识源执行贡献
      const selectedKS = eligibleSources[0];
      const patch = await selectedKS.producePatch(currentSnapshot);

      // 4. 尝试原子提交并处理 OCC 冲突
      const commitResult = this.applyPatch(patch);
      if (!commitResult.success) {
        // 发生竞态冲突，记录审计并触发下一次自愈轮次
        this.state.commitments.reasoningTrace.push(
          `[Warning] Agent ${selectedKS.name} encountered ${commitResult.conflictReason}. Retrying in next turn.`
        );
      }
    }

    if (iterations >= this.maxIterations && !this.state.commitments.isPlanApproved) {
      throw new Error(`Blackboard failed to converge within ${this.maxIterations} iterations. Tripping safety breaker.`);
    }

    return this.getSnapshot();
  }
}