// ---------------------------------------------------------------------------// Metered execution stack: cloud's billing overlay over the execution seams.//// Cloud is the only host that meters executions, and BOTH of its execution// planes do so: the HTTP `/api/*` executor plane (api/protected.ts) and the MCP// session Durable Object (mcp/session-durable-object.ts). This module composes// the four billing-free `CloudExecutionSeamsLayer` seams with an `EngineDecorator`// that calls `AutumnService.trackExecution` after each execution.//// Keeping this in the cloud APP layer (not the neutral `engine/execution-stack.ts`)// is the billing-boundary line: the seams module names no billing service; the// metered overlay, provided ONLY here, does. Both planes import THIS layer and// supply `AutumnService` from their own context (boot for the HTTP plane,// `AutumnService.Default` locally for the DO).// --------------------------------------------------------------------------- import { Effect, Layer } from "effect"; import {  CodeExecutorProvider,  DbProvider,  EngineDecorator,  HostConfig,  PluginsProvider,  type EngineStackIdentity,} from "@executor-js/api/server"; import { AutumnService } from "../extensions/billing/service";import type { DbService } from "../db/db";import { CloudExecutionSeamsLayer } from "../engine/execution-stack";import { withExecutionUsageTracking } from "./execution-usage"; // Usage-metering decorator bound to the billing service. `trackExecution` is// fire-and-forget (`Effect.runFork`) so the billing call can't stall a// user-facing execution.export const CloudMeteringEngineDecorator: Layer.Layer<EngineDecorator, never, AutumnService> =  Layer.effect(EngineDecorator)(    Effect.map(AutumnService.asEffect(), (autumn): EngineDecorator["Service"] => ({      decorate: (engine, identity: EngineStackIdentity) =>        withExecutionUsageTracking(identity.organizationId, engine, (organizationId) =>          Effect.runFork(autumn.trackExecution(organizationId)),        ),    })),  ); /** * The metered execution stack used by BOTH cloud planes (HTTP executor plane and * MCP session DO): the four billing-free `CloudExecutionSeamsLayer` seams plus * the billing decorator. Requires `DbService` (per-request Hyperdrive db) and * `AutumnService` (usage metering) from the surrounding context. */export const CloudMeteredExecutionStackLayer: Layer.Layer<  DbProvider | PluginsProvider | HostConfig | CodeExecutorProvider | EngineDecorator,  never,  AutumnService | DbService> = Layer.merge(CloudExecutionSeamsLayer, CloudMeteringEngineDecorator);