/** * ProviderInstanceRegistryMutator — internal handle used by the hydration * layer to reconcile the live registry with a fresh * `ProviderInstanceConfigMap`. * * Kept separate from the public `ProviderInstanceRegistry` service tag so * downstream consumers (drivers, reactors, `ProviderService`) can only read * from the registry. Only the hydration layer — which watches * `ServerSettingsService.streamChanges` and applies diffs — imports this * tag. * * The mutator exposes a single entry point, `reconcile(configMap)`, which: * *   1. Diffs the incoming map against the live one keyed by instance id. *   2. Closes the per-instance `Scope` of every removed or replaced entry *      (tearing down adapter processes, refresh fibres, temp files) BEFORE *      creating the replacement — `reconcile` guarantees "at most one live *      instance per id" at all times. *   3. Opens a fresh child `Scope` for every added or replaced entry, runs *      the driver's `create`, and stores the resulting `ProviderInstance` *      plus its scope. *   4. Publishes one `void` tick on the registry's `streamChanges` PubSub at *      the end of the batch — consumers re-pull `listInstances` / *      `listUnavailable`. * * `reconcile` is idempotent: calling it with an unchanged config map is a * no-op (no scope churn, no pubsub emission). * * @module provider/Services/ProviderInstanceRegistryMutator */import type { ProviderInstanceConfigMap } from "@t3tools/contracts";import { Context } from "effect";import type { Effect } from "effect"; export interface ProviderInstanceRegistryMutatorShape {  /**   * Bring the live registry in line with the supplied config map. See   * module docs for the add / remove / replace semantics.   *   * The effect never fails: individual driver `create` failures are   * captured as "unavailable" shadow snapshots inside the registry, the   * same way boot-time failures are handled by   * `makeProviderInstanceRegistry`. This keeps settings-watcher loops from   * erroring out on a single bad entry.   */  readonly reconcile: (configMap: ProviderInstanceConfigMap) => Effect.Effect<void>;} export class ProviderInstanceRegistryMutator extends Context.Service<  ProviderInstanceRegistryMutator,  ProviderInstanceRegistryMutatorShape>()("t3/provider/Services/ProviderInstanceRegistryMutator") {}