FN-8127: fix embedded PostgreSQL backups

Enable backup managers to resolve active embedded PostgreSQL runtime URLs safely.

- Track embedded backend URLs with generation-aware lifecycle leases.
- Keep backup resolution current through owner shutdown and joiner release.
- Document PostgreSQL client-tool requirements and add regression coverage.

Files changed:
 .changeset/fn-8127-embedded-backup.md              |   7 ++
 docs/settings-reference.md                         |   3 +
 packages/core/src/__tests__/backup.test.ts         | 115 ++++++++++++++++++++
 packages/core/src/backup.ts                        |  17 ++-
 packages/core/src/index.gate.ts                    |   9 ++
 packages/core/src/index.ts                         |   9 ++
 .../core/src/postgres/active-backend-registry.ts   | 119 +++++++++++++++++++++
 packages/core/src/postgres/embedded-lifecycle.ts   |   5 +
 packages/core/src/postgres/index.ts                |   9 ++
 packages/core/src/postgres/startup-factory.ts      | 118 +++++++++++++++++---
 10 files changed, 389 insertions(+), 22 deletions(-)

Fusion-Task-Id: FN-8127

Fusion-Task-Lineage: 6125be5c-d1d5-4228-a6b1-290311de70d9

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

.changeset/fn-8127-embedded-backup.md

@@ -0,0 +1,7 @@
+---
+"@runfusion/fusion": patch
+---
+
+summary: Fix fn backup and scheduled database backups in the default embedded PostgreSQL setup.
+category: fix
+dev: Tracks embedded runtime URLs with owner/joiner generation leases so stale shutdowns cannot target or clear a newer cluster.

docs/settings-reference.md

@@ -673,6 +673,9 @@ GitLab configuration examples: leave both URL fields blank for GitLab.com (`http
 | `autoBackupSchedule` | `string` | `"0 2 * * *"` | Backup cron schedule. |
 | `autoBackupRetention` | `number` | `7` | Number of backups to retain. |
 | `autoBackupDir` | `string` | `".fusion/backups"` | Relative backup directory path. |
+
+Database backups work with both external PostgreSQL and Fusion's default embedded PostgreSQL deployment. `fn backup` and the built-in **Database Backup** cron/routine use `pg_dump` and `pg_restore`; install PostgreSQL client tools or configure their paths so both executables are available on `PATH`. They are not bundled with `embedded-postgres`.
+
 | `memoryBackupEnabled` | `boolean` | `false` | Enable scheduled memory backups. |
 | `memoryBackupSchedule` | `string` | `"0 3 * * *"` | Memory backup cron schedule. |
 | `memoryBackupRetention` | `number` | `14` | Number of memory backups to retain. |

packages/core/src/__tests__/backup.test.ts

@@ -0,0 +1,115 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import {
+  BackupManager,
+  createBackupManager,
+  resolveBackendConnectionString,
+} from "../backup.js";
+import {
+  clearActiveEmbeddedRuntimeUrl,
+  getActiveEmbeddedRuntimeUrl,
+  invalidateEmbeddedRuntimeUrl,
+  registerEmbeddedRuntimeUrl,
+  releaseEmbeddedRuntimeLease,
+} from "../postgres/active-backend-registry.js";
+
+const embeddedUrl = "postgresql://postgres:embedded-secret@127.0.0.1:55432/fusion";
+const externalUrl = "postgresql://operator:external-secret@db.example.test:5432/fusion";
+
+afterEach(() => {
+  clearActiveEmbeddedRuntimeUrl();
+  vi.unstubAllEnvs();
+});
+
+describe("embedded backup runtime URL registry", () => {
+  it("resolves a registered embedded backend and lets BackupManager construct", () => {
+    vi.stubEnv("DATABASE_URL", "");
+    registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+
+    expect(resolveBackendConnectionString()).toBe(embeddedUrl);
+    expect(() => createBackupManager("/tmp/project/.fusion")).not.toThrow();
+  });
+
+  it("keeps an external DATABASE_URL ahead of the embedded registry", () => {
+    vi.stubEnv("DATABASE_URL", externalUrl);
+    registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+
+    expect(resolveBackendConnectionString()).toBe(externalUrl);
+  });
+
+  it("preserves the actionable error before an embedded lifecycle boots", () => {
+    vi.stubEnv("DATABASE_URL", "");
+
+    expect(resolveBackendConnectionString()).toBeUndefined();
+    expect(() => new BackupManager("/tmp/project/.fusion")).toThrow(
+      "BackupManager requires a PostgreSQL connection string",
+    );
+  });
+
+  it("keeps an owner URL live when only a joiner releases", () => {
+    const owner = registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+    const joiner = registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: false });
+
+    releaseEmbeddedRuntimeLease(joiner);
+    expect(getActiveEmbeddedRuntimeUrl()).toBe(embeddedUrl);
+
+    releaseEmbeddedRuntimeLease(owner);
+    expect(getActiveEmbeddedRuntimeUrl()).toBeUndefined();
+  });
+
+  it("invalidates every joiner when the postmaster owner stops", () => {
+    registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+    registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: false });
+
+    invalidateEmbeddedRuntimeUrl(embeddedUrl);
+    expect(resolveBackendConnectionString()).toBeUndefined();
+    expect(() => new BackupManager("/tmp/project/.fusion")).toThrow(
+      "BackupManager requires a PostgreSQL connection string",
+    );
+  });
+
+  it("makes an old joiner release inert after owner invalidation and re-registration", () => {
+    registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+    const oldJoiner = registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: false });
+    invalidateEmbeddedRuntimeUrl(embeddedUrl);
+    registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+
+    releaseEmbeddedRuntimeLease(oldJoiner);
+    expect(getActiveEmbeddedRuntimeUrl()).toBe(embeddedUrl);
+  });
+
+  it("makes leases from a test reset inert for a re-registered URL", () => {
+    const oldLease = registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: false });
+    clearActiveEmbeddedRuntimeUrl();
+    registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+
+    releaseEmbeddedRuntimeLease(oldLease);
+    expect(getActiveEmbeddedRuntimeUrl()).toBe(embeddedUrl);
+  });
+
+  it("does not let a stale owner invalidate a replacement cluster that reused its URL", () => {
+    const oldOwner = registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+    const replacementOwner = registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: true });
+
+    invalidateEmbeddedRuntimeUrl(embeddedUrl, oldOwner);
+    expect(getActiveEmbeddedRuntimeUrl()).toBe(embeddedUrl);
+
+    releaseEmbeddedRuntimeLease(replacementOwner);
+    expect(getActiveEmbeddedRuntimeUrl()).toBeUndefined();
+  });
+
+  it("uses the last live registration and ignores unknown invalidation/releases", () => {
+    const firstUrl = "postgresql://postgres:a@127.0.0.1:55431/fusion";
+    const first = registerEmbeddedRuntimeUrl(firstUrl, { ownsProcess: true });
+    const second = registerEmbeddedRuntimeUrl(embeddedUrl, { ownsProcess: false });
+    expect(getActiveEmbeddedRuntimeUrl()).toBe(embeddedUrl);
+
+    invalidateEmbeddedRuntimeUrl("postgresql://unknown@127.0.0.1:9/missing");
+    releaseEmbeddedRuntimeLease({} as never);
+    expect(getActiveEmbeddedRuntimeUrl()).toBe(embeddedUrl);
+
+    releaseEmbeddedRuntimeLease(second);
+    expect(getActiveEmbeddedRuntimeUrl()).toBe(firstUrl);
+    releaseEmbeddedRuntimeLease(first);
+    expect(getActiveEmbeddedRuntimeUrl()).toBeUndefined();
+  });
+});

packages/core/src/backup.ts

@@ -3,6 +3,7 @@ import { CronExpressionParser } from "cron-parser";
 import { getDefaultCentralDbPath } from "./central-db.js";
 import { PgBackupManager, type PgBackupPair, type PgDumpResult } from "./postgres/pg-backup.js";
 import { resolveBackend } from "./postgres/backend-resolver.js";
+import { getActiveEmbeddedRuntimeUrl } from "./postgres/active-backend-registry.js";
 import type { ProjectSettings } from "./types.js";
 
 export interface BackupFileInfo {
@@ -247,20 +248,18 @@ export function createBackupManager(
 }
 
 /**
- * FNXC:BackendFlip 2026-06-26-14:35:
+ * FNXC:PostgresBackup 2026-07-16-12:40:
- * Resolve the PostgreSQL connection string for backup operations from the
+ * External deployments resolve directly from DATABASE_URL. Embedded PostgreSQL
- * runtime backend. Returns the runtime URL when the backend is external
+ * learns its URL only during asynchronous startup, so use the active lifecycle
- * (DATABASE_URL set). Returns undefined for embedded mode (the default
+ * registry as the synchronous fallback. It is intentionally undefined before
- * production path since flip-embedded-pg-default when DATABASE_URL is unset),
+ * boot or after owner shutdown, preserving BackupManager's actionable error.
- * because the embedded lifecycle provides its URL asynchronously at startup
- * and cannot be resolved synchronously here.
  */
-function resolveBackendConnectionString(): string | undefined {
+export function resolveBackendConnectionString(): string | undefined {
   const backend = resolveBackend();
   if (backend.mode === "external" && backend.runtimeUrl) {
     return backend.runtimeUrl;
   }
-  return undefined;
+  return getActiveEmbeddedRuntimeUrl();
 }
 
 /*

packages/core/src/index.gate.ts

@@ -1305,8 +1305,17 @@ export {
   syncBackupAutomation,
   syncBackupRoutine,
   BACKUP_SCHEDULE_NAME,
+  resolveBackendConnectionString,
 } from "./backup.js";
 export type { BackupInfo, BackupOptions, BackupFileInfo, BackupPairInfo } from "./backup.js";
+export {
+  registerEmbeddedRuntimeUrl,
+  releaseEmbeddedRuntimeLease,
+  invalidateEmbeddedRuntimeUrl,
+  getActiveEmbeddedRuntimeUrl,
+  clearActiveEmbeddedRuntimeUrl,
+} from "./postgres/active-backend-registry.js";
+export type { EmbeddedRuntimeLease } from "./postgres/active-backend-registry.js";
 export {
   MemoryBackupManager,
   createMemoryBackupManager,

packages/core/src/index.ts

@@ -1357,8 +1357,17 @@ export {
   syncBackupAutomation,
   syncBackupRoutine,
   BACKUP_SCHEDULE_NAME,
+  resolveBackendConnectionString,
 } from "./backup.js";
 export type { BackupInfo, BackupOptions, BackupFileInfo, BackupPairInfo } from "./backup.js";
+export {
+  registerEmbeddedRuntimeUrl,
+  releaseEmbeddedRuntimeLease,
+  invalidateEmbeddedRuntimeUrl,
+  getActiveEmbeddedRuntimeUrl,
+  clearActiveEmbeddedRuntimeUrl,
+} from "./postgres/active-backend-registry.js";
+export type { EmbeddedRuntimeLease } from "./postgres/active-backend-registry.js";
 export {
   MemoryBackupManager,
   createMemoryBackupManager,

packages/core/src/postgres/active-backend-registry.ts

@@ -0,0 +1,119 @@
+/*
+ * FNXC:PostgresBackup 2026-07-16-12:40:
+ * Embedded PostgreSQL learns its credential-bearing runtime URL asynchronously,
+ * while backup construction resolves synchronously. This process-local registry
+ * bridges that gap without logging credentials. Leases represent individual
+ * lifecycles within a physical cluster generation: a joiner's release cannot
+ * clear a newer generation, and owner shutdown invalidates every lease because
+ * it is the only lifecycle that actually stops the postmaster.
+ */
+
+/** Opaque handle for one embedded-backend lifecycle registration. */
+declare const embeddedRuntimeLeaseBrand: unique symbol;
+export interface EmbeddedRuntimeLease {
+  readonly [embeddedRuntimeLeaseBrand]: true;
+}
+
+interface Generation {
+  readonly url: string;
+  readonly epoch: number;
+  readonly id: number;
+  readonly leases: Set<EmbeddedRuntimeLease>;
+  latestRegistration: number;
+}
+
+interface LeaseMetadata {
+  readonly url: string;
+  readonly epoch: number;
+  readonly generation: number;
+  readonly ownsProcess: boolean;
+}
+
+const generationsByUrl = new Map<string, Generation>();
+const nextGenerationByUrl = new Map<string, number>();
+const leaseMetadata = new WeakMap<EmbeddedRuntimeLease, LeaseMetadata>();
+let registrationSequence = 0;
+let registryEpoch = 0;
+
+/** Register a booted embedded lifecycle and return its release-only lease. */
+export function registerEmbeddedRuntimeUrl(
+  url: string,
+  options: { ownsProcess: boolean },
+): EmbeddedRuntimeLease {
+  let generation = generationsByUrl.get(url);
+  // FNXC:PostgresBackup 2026-07-16-12:40: An owner started a new postmaster,
+  // so URL reuse must create a new generation rather than retain stale leases.
+  if (!generation || options.ownsProcess) {
+    const id = (nextGenerationByUrl.get(url) ?? 0) + 1;
+    nextGenerationByUrl.set(url, id);
+    generation = { url, epoch: registryEpoch, id, leases: new Set(), latestRegistration: 0 };
+    generationsByUrl.set(url, generation);
+  }
+
+  const lease = {} as EmbeddedRuntimeLease;
+  generation.leases.add(lease);
+  generation.latestRegistration = ++registrationSequence;
+  leaseMetadata.set(lease, {
+    url,
+    epoch: generation.epoch,
+    generation: generation.id,
+    ownsProcess: options.ownsProcess,
+  });
+  return lease;
+}
+
+/** Release exactly one lifecycle lease; stale generation handles are inert. */
+export function releaseEmbeddedRuntimeLease(lease: EmbeddedRuntimeLease): void {
+  const metadata = leaseMetadata.get(lease);
+  if (!metadata) return;
+  const generation = generationsByUrl.get(metadata.url);
+  if (
+    !generation
+    || generation.epoch !== metadata.epoch
+    || generation.id !== metadata.generation
+  ) return;
+
+  generation.leases.delete(lease);
+  if (generation.leases.size === 0) {
+    generationsByUrl.delete(metadata.url);
+  }
+}
+
+/**
+ * Invalidate all leases for a cluster generation after its owner stops it.
+ * A lease-aware invalidation cannot remove a newer cluster that reused the URL.
+ */
+export function invalidateEmbeddedRuntimeUrl(url: string, lease?: EmbeddedRuntimeLease): void {
+  if (!lease) {
+    generationsByUrl.delete(url);
+    return;
+  }
+  const metadata = leaseMetadata.get(lease);
+  const generation = generationsByUrl.get(url);
+  if (
+    metadata?.url === url
+    && generation?.epoch === metadata.epoch
+    && generation.id === metadata.generation
+  ) {
+    generationsByUrl.delete(url);
+  }
+}
+
+/** Return the most recently registered URL whose generation remains live. */
+export function getActiveEmbeddedRuntimeUrl(): string | undefined {
+  let latest: Generation | undefined;
+  for (const generation of generationsByUrl.values()) {
+    if (generation.leases.size > 0 && (!latest || generation.latestRegistration > latest.latestRegistration)) {
+      latest = generation;
+    }
+  }
+  return latest?.url;
+}
+
+/** Reset process-local state for isolated tests. */
+export function clearActiveEmbeddedRuntimeUrl(): void {
+  generationsByUrl.clear();
+  nextGenerationByUrl.clear();
+  registrationSequence = 0;
+  registryEpoch += 1;
+}

packages/core/src/postgres/embedded-lifecycle.ts

@@ -966,6 +966,11 @@ export class EmbeddedPostgresLifecycle {
     return this.options.port ?? this.resolvedPort;
   }
 
+  /** True when this lifecycle started the postmaster rather than joining it. */
+  getOwnsProcess(): boolean {
+    return this.ownsProcess;
+  }
+
   /** True when the embedded postgres process is currently running. */
   isRunning(): boolean {
     return this.running;

packages/core/src/postgres/index.ts

@@ -37,6 +37,15 @@ export {
   type CreateConnectionOptions,
 } from "./connection.js";
 
+export {
+  registerEmbeddedRuntimeUrl,
+  releaseEmbeddedRuntimeLease,
+  invalidateEmbeddedRuntimeUrl,
+  getActiveEmbeddedRuntimeUrl,
+  clearActiveEmbeddedRuntimeUrl,
+  type EmbeddedRuntimeLease,
+} from "./active-backend-registry.js";
+
 export {
   redactUrlPassword,
   redactUrlQueryPassword,

packages/core/src/postgres/startup-factory.ts

@@ -55,6 +55,12 @@ import {
 } from "./connection.js";
 import { applySchemaBaseline } from "./schema-applier.js";
 import { createAsyncDataLayer, type AsyncDataLayer } from "./data-layer.js";
+import {
+  invalidateEmbeddedRuntimeUrl,
+  registerEmbeddedRuntimeUrl,
+  releaseEmbeddedRuntimeLease,
+  type EmbeddedRuntimeLease,
+} from "./active-backend-registry.js";
 import { runLoadedPluginSchemaInitHooks, type LoadedPluginSchemaContract } from "./plugin-schema-hook.js";
 import {
   lookupRegisteredProjectIdByPath,
@@ -76,6 +82,7 @@ import {
 type EmbeddedLifecycleLike = {
   start(): Promise<ResolvedBackend>;
   stop(): Promise<void>;
+  getOwnsProcess(): boolean;
 };
 
 const log = createLogger("startup-factory");
@@ -166,6 +173,35 @@ interface SchemaBackendBootResult {
   readonly backend: ResolvedBackend;
   readonly connections: PostgresConnections;
   readonly embeddedLifecycle: EmbeddedLifecycleLike | null;
+  readonly embeddedRuntimeLease: EmbeddedRuntimeLease | null;
+  readonly embeddedRuntimeUrl: string | null;
+  readonly embeddedOwnsProcess: boolean;
+}
+
+/**
+ * FNXC:PostgresBackup 2026-07-16-12:40:
+ * stop() only stops a postmaster owned by this lifecycle. Consequently owner
+ * teardown burns the URL generation for every joiner, while joiner teardown
+ * releases only its opaque lease. This keeps synchronous backup resolution
+ * aligned with physical cluster liveness without logging the credential URL.
+ */
+async function stopEmbeddedRuntime(
+  lifecycle: EmbeddedLifecycleLike | null,
+  lease: EmbeddedRuntimeLease | null,
+  runtimeUrl: string | null,
+  ownsProcess: boolean,
+): Promise<void> {
+  try {
+    await lifecycle?.stop();
+  } finally {
+    if (lease && runtimeUrl) {
+      if (ownsProcess) {
+        invalidateEmbeddedRuntimeUrl(runtimeUrl, lease);
+      } else {
+        releaseEmbeddedRuntimeLease(lease);
+      }
+    }
+  }
 }
 
 /**
@@ -189,6 +225,9 @@ async function bootSchemaBackend(
   }
 
   let embeddedLifecycle: EmbeddedLifecycleLike | null = null;
+  let embeddedRuntimeLease: EmbeddedRuntimeLease | null = null;
+  let embeddedRuntimeUrl: string | null = null;
+  let embeddedOwnsProcess = false;
   let resolvedBackend = backend;
   if (backend.mode === "embedded") {
     const { EmbeddedPostgresLifecycle, defaultEmbeddedDataDir, DEFAULT_EMBEDDED_DATABASE } =
@@ -203,6 +242,13 @@ async function bootSchemaBackend(
     });
     try {
       resolvedBackend = await embeddedLifecycle.start();
+      if (resolvedBackend.runtimeUrl) {
+        embeddedRuntimeUrl = resolvedBackend.runtimeUrl;
+        embeddedOwnsProcess = embeddedLifecycle.getOwnsProcess();
+        embeddedRuntimeLease = registerEmbeddedRuntimeUrl(embeddedRuntimeUrl, {
+          ownsProcess: embeddedOwnsProcess,
+        });
+      }
     } catch (error) {
       await embeddedLifecycle.stop().catch(() => undefined);
       throw new Error(
@@ -230,10 +276,22 @@ async function bootSchemaBackend(
           bypassProjectIsolation,
         });
     await applySchemaBaseline(connections.migration);
-    return { backend: resolvedBackend, connections, embeddedLifecycle };
+    return {
+      backend: resolvedBackend,
+      connections,
+      embeddedLifecycle,
+      embeddedRuntimeLease,
+      embeddedRuntimeUrl,
+      embeddedOwnsProcess,
+    };
   } catch (error) {
     await connections?.close().catch(() => undefined);
-    await embeddedLifecycle?.stop().catch(() => undefined);
+    await stopEmbeddedRuntime(
+      embeddedLifecycle,
+      embeddedRuntimeLease,
+      embeddedRuntimeUrl,
+      embeddedOwnsProcess,
+    ).catch(() => undefined);
     throw error;
   }
 }
@@ -252,7 +310,14 @@ export async function createCentralBackendLayer(
   options: Pick<CreateTaskStoreForBackendOptions, "env" | "backend" | "embeddedPgRequested" | "embeddedDataDir" | "poolMax" | "globalSettingsDir"> = {},
 ): Promise<CentralBackendLayerResult> {
   const boot = await bootSchemaBackend(options, true);
-  const { backend: resolvedBackend, connections, embeddedLifecycle } = boot;
+  const {
+    backend: resolvedBackend,
+    connections,
+    embeddedLifecycle,
+    embeddedRuntimeLease,
+    embeddedRuntimeUrl,
+    embeddedOwnsProcess,
+  } = boot;
   try {
     /*
     FNXC:CentralPostgresCutover 2026-07-14-19:06:
@@ -301,12 +366,22 @@ export async function createCentralBackendLayer(
       releaseConnections,
       async shutdown(): Promise<void> {
         await releaseConnections();
-        await embeddedLifecycle?.stop().catch(() => undefined);
+        await stopEmbeddedRuntime(
+          embeddedLifecycle,
+          embeddedRuntimeLease,
+          embeddedRuntimeUrl,
+          embeddedOwnsProcess,
+        ).catch(() => undefined);
       },
     };
   } catch (error) {
     await connections.close().catch(() => undefined);
-    await embeddedLifecycle?.stop().catch(() => undefined);
+    await stopEmbeddedRuntime(
+      embeddedLifecycle,
+      embeddedRuntimeLease,
+      embeddedRuntimeUrl,
+      embeddedOwnsProcess,
+    ).catch(() => undefined);
     throw error;
   }
 }
@@ -444,7 +519,13 @@ export async function createTaskStoreForBackend(
     );
   }
   let { connections } = boot;
-  const { backend: resolvedBackend, embeddedLifecycle } = boot;
+  const {
+    backend: resolvedBackend,
+    embeddedLifecycle,
+    embeddedRuntimeLease,
+    embeddedRuntimeUrl,
+    embeddedOwnsProcess,
+  } = boot;
 
   /*
   FNXC:PostgresMigration 2026-07-10:
@@ -661,9 +742,12 @@ export async function createTaskStoreForBackend(
       }
     } catch (err) {
       await connections.close().catch(() => undefined);
-      if (embeddedLifecycle) {
+      await stopEmbeddedRuntime(
-        await embeddedLifecycle.stop().catch(() => undefined);
+        embeddedLifecycle,
-      }
+        embeddedRuntimeLease,
+        embeddedRuntimeUrl,
+        embeddedOwnsProcess,
+      ).catch(() => undefined);
       throw new Error(
         `startup-factory: SQLite → PostgreSQL first-boot auto-migration failed (refusing to boot an empty database over existing SQLite data; restore the retained backup and run 'fn db migrate' manually): ${
           err instanceof Error ? err.message : String(err)
@@ -751,9 +835,12 @@ export async function createTaskStoreForBackend(
     log.log(`startup phase backend.taskStore.construct: ${Date.now() - constructT0}ms`);
   } catch (err) {
     await asyncLayer.close().catch(() => undefined);
-    if (embeddedLifecycle) {
+    await stopEmbeddedRuntime(
-      await embeddedLifecycle.stop().catch(() => undefined);
+      embeddedLifecycle,
-    }
+      embeddedRuntimeLease,
+      embeddedRuntimeUrl,
+      embeddedOwnsProcess,
+    ).catch(() => undefined);
     throw new Error(
       `startup-factory: failed to construct PostgreSQL-backed TaskStore: ${
         err instanceof Error ? err.message : String(err)
@@ -829,7 +916,12 @@ export async function createTaskStoreForBackend(
       }
       if (shutdownEmbedded) {
         try {
-          await shutdownEmbedded.stop();
+          await stopEmbeddedRuntime(
+            shutdownEmbedded,
+            embeddedRuntimeLease,
+            embeddedRuntimeUrl,
+            embeddedOwnsProcess,
+          );
         } catch (err) {
           log.warn(`startup-factory: embedded PostgreSQL stop failed during shutdown: ${
             err instanceof Error ? err.message : String(err)