import { DurableObject } from "cloudflare:workers";import { Data, Effect } from "effect"; export type McpExecutionOwnerRoute = {  readonly sessionId: string;}; export type McpExecutionOwnerRecord = {  readonly executionId: string;  readonly owner: McpExecutionOwnerRoute;  readonly accountId: string;  readonly organizationId: string;  readonly expiresAt: string;  readonly ttlMs: number;}; export interface McpExecutionOwnerDirectory {  readonly put: (record: McpExecutionOwnerRecord) => Effect.Effect<void, unknown>;  readonly get: (executionId: string) => Effect.Effect<McpExecutionOwnerRecord | null, unknown>;  readonly delete: (executionId: string) => Effect.Effect<void, unknown>;} export interface McpExecutionOwnerDirectoryStub {  readonly put: (record: McpExecutionOwnerRecord) => Promise<void>;  readonly get: (executionId: string) => Promise<McpExecutionOwnerRecord | null>;  readonly delete: (executionId: string) => Promise<void>;} export interface McpExecutionOwnerDirectoryNamespace<Id> {  readonly idFromName: (name: string) => Id;  readonly get: (id: Id) => unknown;} type McpExecutionOwnerDirectoryStorage = DurableObjectState["storage"]; const toMcpExecutionOwnerDirectoryStub = (stub: unknown): McpExecutionOwnerDirectoryStub =>  stub as McpExecutionOwnerDirectoryStub; export const mcpSessionDurableObjectName = (sessionId: string): string =>  `streamable-http:${sessionId}`; class McpExecutionOwnerDirectoryRpcError extends Data.TaggedError(  "McpExecutionOwnerDirectoryRpcError",)<{  readonly cause: unknown;}> {} const RECORD_KEY = "owner"; const isRecord = (value: unknown): value is Record<string, unknown> =>  typeof value === "object" && value !== null && !Array.isArray(value); const isOwnerRoute = (value: unknown): value is McpExecutionOwnerRoute =>  isRecord(value) && typeof value.sessionId === "string"; const isOwnerRecord = (value: unknown): value is McpExecutionOwnerRecord =>  isRecord(value) &&  typeof value.executionId === "string" &&  isOwnerRoute(value.owner) &&  typeof value.accountId === "string" &&  typeof value.organizationId === "string" &&  typeof value.expiresAt === "string" &&  typeof value.ttlMs === "number"; const expiryMs = (record: McpExecutionOwnerRecord): number => Date.parse(record.expiresAt); export class McpExecutionOwnerDirectoryDO extends DurableObject<unknown> {  private readonly storage: McpExecutionOwnerDirectoryStorage;   constructor(ctx: DurableObjectState, env: unknown) {    super(ctx, env);    this.storage = ctx.storage;  }   async put(record: McpExecutionOwnerRecord): Promise<void> {    const expiresAtMs = expiryMs(record);    if (!Number.isFinite(expiresAtMs)) return;    await this.storage.put(RECORD_KEY, record);    await this.storage.setAlarm(expiresAtMs);  }   async get(executionId: string): Promise<McpExecutionOwnerRecord | null> {    const stored = await this.storage.get<unknown>(RECORD_KEY);    if (!isOwnerRecord(stored) || stored.executionId !== executionId) return null;    const expiresAtMs = expiryMs(stored);    if (!Number.isFinite(expiresAtMs) || expiresAtMs <= Date.now()) {      await this.delete(executionId);      return null;    }    return stored;  }   async delete(executionId: string): Promise<void> {    const stored = await this.storage.get<unknown>(RECORD_KEY);    if (isOwnerRecord(stored) && stored.executionId !== executionId) return;    await Promise.all([this.storage.delete(RECORD_KEY), this.storage.deleteAlarm()]);  }   override async alarm(): Promise<void> {    await Promise.all([this.storage.delete(RECORD_KEY), this.storage.deleteAlarm()]);  }} export const mcpExecutionOwnerDirectoryFromNamespace = <Id>(  namespace: McpExecutionOwnerDirectoryNamespace<Id> | undefined,): McpExecutionOwnerDirectory | null => {  if (!namespace) return null;  const stubFor = (executionId: string): McpExecutionOwnerDirectoryStub =>    toMcpExecutionOwnerDirectoryStub(namespace.get(namespace.idFromName(executionId)));  return {    put: (record) =>      Effect.tryPromise({        try: () => stubFor(record.executionId).put(record),        catch: (cause) => new McpExecutionOwnerDirectoryRpcError({ cause }),      }),    get: (executionId) =>      Effect.tryPromise({        try: () => stubFor(executionId).get(executionId),        catch: (cause) => new McpExecutionOwnerDirectoryRpcError({ cause }),      }),    delete: (executionId) =>      Effect.tryPromise({        try: () => stubFor(executionId).delete(executionId),        catch: (cause) => new McpExecutionOwnerDirectoryRpcError({ cause }),      }),  };};