diff --git a/scripts/artifact-registry-ssh-timeout-contract-test.ts b/scripts/artifact-registry-ssh-timeout-contract-test.ts
index b88d4e23..48bc1d77 100644
--- a/scripts/artifact-registry-ssh-timeout-contract-test.ts
+++ b/scripts/artifact-registry-ssh-timeout-contract-test.ts
@@ -17,6 +17,7 @@ assertCondition(source.includes("runRemoteScriptBackground(options, remoteScript
 assertCondition(source.includes('runRemoteScriptBackground(options, deployScript, Math.max(options.timeoutMs, 420_000), "d601-k3s-deploy")'), "D601 k3s deploy must use background polling");
 assertCondition(source.includes('"ssh",\n    options.providerId,\n    "download"'), "download helper must route through UniDesk ssh download");
 assertCondition(downloadRemoteFileSource.includes('"--chunk-bytes",\n    "64000"'), "artifact ssh download must use a mid-size bounded chunk, not the largest chunk");
+assertCondition(downloadRemoteFileSource.includes("teeStderrFile: process.env.UNIDESK_JOB_STDERR_FILE"), "artifact ssh download must stream progress stderr into async job logs");
 assertCondition(source.includes("UNIDESK_SSH_CLIENT_TOKEN") && source.includes("UNIDESK_SSH_CLIENT_ROUTE_ALLOWLIST"), "dev frontend artifact deploy must sync scoped ssh runtime keys");
 
 console.log(JSON.stringify({
@@ -27,6 +28,7 @@ console.log(JSON.stringify({
     "compose artifact uses verified ssh download",
     "remote docker save and k3s deploy use background polling",
     "artifact downloads use a mid-size bounded ssh chunk",
+    "artifact download progress is visible in async job stderr",
     "dev frontend artifact deploy syncs scoped ssh runtime keys"
   ]
 }, null, 2));
diff --git a/scripts/src/artifact-registry.ts b/scripts/src/artifact-registry.ts
index c45b76a8..3fb3fe34 100644
--- a/scripts/src/artifact-registry.ts
+++ b/scripts/src/artifact-registry.ts
@@ -1671,7 +1671,7 @@ function combineCommandResults(command: string[], parts: CommandResult[]): Comma
 }
 
 function downloadRemoteFile(options: ArtifactRegistryOptions, remotePath: string, localPath: string, timeoutMs = options.timeoutMs): CommandResult {
-  return runCommand([
+  const result = runCommand([
     process.execPath,
     "scripts/cli.ts",
     "ssh",
@@ -1681,7 +1681,12 @@ function downloadRemoteFile(options: ArtifactRegistryOptions, remotePath: string
     "64000",
     remotePath,
     localPath,
-  ], repoRoot, { timeoutMs });
+  ], repoRoot, {
+    timeoutMs,
+    teeStdoutFile: process.env.UNIDESK_JOB_STDOUT_FILE,
+    teeStderrFile: process.env.UNIDESK_JOB_STDERR_FILE,
+  });
+  return result;
 }
 
 async function runRemoteScriptBackground(
diff --git a/scripts/src/command.ts b/scripts/src/command.ts
index 0828a3d1..331c67a5 100644
--- a/scripts/src/command.ts
+++ b/scripts/src/command.ts
@@ -1,5 +1,5 @@
 import { spawn, spawnSync } from "node:child_process";
-import { closeSync, createWriteStream, existsSync, openSync, readSync, statSync } from "node:fs";
+import { appendFileSync, closeSync, createWriteStream, existsSync, openSync, readSync, statSync } from "node:fs";
 
 export interface CommandResult {
   command: string[];
@@ -11,7 +11,7 @@ export interface CommandResult {
   timedOut: boolean;
 }
 
-export function runCommand(command: string[], cwd: string, options: { timeoutMs?: number; env?: NodeJS.ProcessEnv } = {}): CommandResult {
+export function runCommand(command: string[], cwd: string, options: { timeoutMs?: number; env?: NodeJS.ProcessEnv; teeStdoutFile?: string; teeStderrFile?: string } = {}): CommandResult {
   const result = spawnSync(command[0], command.slice(1), {
     cwd,
     encoding: "utf8",
@@ -20,12 +20,15 @@ export function runCommand(command: string[], cwd: string, options: { timeoutMs?
     timeout: options.timeoutMs,
   });
   const error = result.error as (Error & { code?: string }) | undefined;
+  if (options.teeStdoutFile !== undefined && result.stdout !== undefined && result.stdout.length > 0) appendFileSync(options.teeStdoutFile, result.stdout, "utf8");
+  const stderr = result.stderr ?? error?.message ?? "";
+  if (options.teeStderrFile !== undefined && stderr.length > 0) appendFileSync(options.teeStderrFile, stderr, "utf8");
   return {
     command,
     cwd,
     exitCode: result.status,
     stdout: result.stdout ?? "",
-    stderr: result.stderr ?? error?.message ?? "",
+    stderr,
     signal: result.signal,
     timedOut: error?.code === "ETIMEDOUT",
   };
@@ -39,7 +42,7 @@ export async function runCommandToFiles(command: string[], cwd: string, stdoutFi
   const stdout = createWriteStream(stdoutFile, { flags: "a" });
   const stderr = createWriteStream(stderrFile, { flags: "a" });
   stdout.write(`$ ${command.map((part) => JSON.stringify(part)).join(" ")}\n`);
-  const child = spawn(command[0], command.slice(1), { cwd, env: process.env });
+  const child = spawn(command[0], command.slice(1), { cwd, env: { ...process.env, UNIDESK_JOB_STDOUT_FILE: stdoutFile, UNIDESK_JOB_STDERR_FILE: stderrFile } });
   child.stdout.pipe(stdout, { end: false });
   child.stderr.pipe(stderr, { end: false });
   const exitCode = await new Promise<number | null>((resolve) => {