[Bug]: Agent tool calls to packaged CLI (\$env:OD_BIN\ tools live-artifacts / export) trigger desktop single-instance 'headless-owner' restart

[glancake]

What happened?

Running an agent task inside the desktop app periodically restarts the desktop (and on v0.19.2 it crashed/hung the app). The trigger is the agent's own tool calls that invoke the packaged Open Design CLI via $env:OD_BIN (e.g. tools live-artifacts list, tools live-artifacts create, export template.html). Each CLI invocation launches a new Open Design.exe instance, which enters the launcher's single-instance gate (inspectExistingDesktopForLauncher). When the already-running desktop reports windowVisible: false, the gate classifies it as headless-owner and kills + restarts the desktop (action=restart reason=headless-owner). When the window happens to be visible it just focuses (focus=accepted) — so the behavior alternates between "app randomly restarts" and "harmless focus flash" depending on window visibility at the moment of each agent tool call.

On v0.19.2 the same restart path hit the EPIPE: broken pipe, write fatal-uncaught-exception bug and the app hung (WER AppHangB1). On v0.20.0 the EPIPE issue is fixed but the self-restart behavior remains.

Steps to reproduce

1. On Windows, install Open Design (reproduced on 0.19.2 and 0.20.0), open a project with a template.html + data.json + artifact.json (a "live artifact").
2. In a conversation, send an agent task whose prompt makes the agent register/verify/export the live artifact (e.g. "注册可刷新 artifact 并验证预览" / "register refreshable artifact and verify preview").
3. Watch the agent run: it executes commands like:

   & $env:OD_NODE_BIN $env:OD_BIN tools live-artifacts list --format compact
   & $env:OD_NODE_BIN $env:OD_BIN tools live-artifacts create --input artifact.json
   & $env:OD_NODE_BIN $env:OD_BIN export template.html --project ...
   

4. When the desktop window is not visible at that instant (minimized/hidden/still starting), the desktop is shut down and restarted (headless-owner). With the window visible, only a focus handoff happens.

Expected behavior

Agent-internal CLI calls ($env:OD_BIN tools ..., $env:OD_BIN export ...) should run in a pure CLI/headless mode and must not re-enter the desktop single-instance gate, so they never shut down or restart the running desktop. The single-instance "headless-owner" restart should not be triggered by the app's own agent tooling.

OpenDesign version

0.20.0 (stable, Windows; reproduced on 0.19.2 as a hang). Electron 41.3.0, packaged payload under %APPDATA%\Open Design\launcher\channels\stable\namespaces\release-stable-win\versions\0.20.0.

Platform

Windows (Win64, zh-CN)

Logs (evidence)

Launcher gate log …\logs\launcher\after-quit.log — every restart/focus event aligns within ~0.2 s of an agent OD_BIN call:

2026-08-20T03:17:57.461Z inspect-found-existing namespace=release-stable-win action=restart reason=headless-owner pid=23496
2026-08-20T03:18:01.684Z inspect-found-existing namespace=release-stable-win shutdown=exited reason=headless-owner pid=23496
2026-08-20T03:22:09.855Z inspect-found-existing namespace=release-stable-win action=restart reason=headless-owner pid=41904
2026-08-20T03:22:14.876Z inspect-found-existing namespace=release-stable-win shutdown=timed-out reason=headless-owner pid=41904
2026-08-20T03:22:14.885Z force-stop headless-owner pid=41904 outcome=sigterm
2026-08-20T03:27:22.993Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:27:28.927Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:27:44.026Z inspect-found-existing namespace=release-stable-win focus=accepted

Agent run events …\data\runs\<runId>\events.jsonl — the tool calls at the same instants:

[11:17:57.282] tool_use Bash: & $env:OD_NODE_BIN $env:OD_BIN tools live-artifacts list --format compact   → restart at 11:17:57.461
[11:22:09.665] tool_use Bash: & $env:OD_NODE_BIN $env:OD_BIN tools live-artifacts list --format compact   → restart at 11:22:09.855
[11:27:22.704] tool_use Bash: & $env:OD_NODE_BIN $env:OD_BIN tools live-artifacts create --input artifact.json → focus at 11:27:22.993
[11:27:28.627] tool_use Bash: & $env:OD_NODE_BIN $env:OD_BIN tools live-artifacts list --format compact   → focus at 11:27:28.927
[11:27:43.732] tool_use Bash: & $env:OD_NODE_BIN $env:OD_BIN tools live-artifacts create --input artifact.json → focus at 11:27:44.026
[11:28:05.161] tool_use Bash: & $env:OD_NODE_BIN $env:OD_BIN export template.html --project ...            → further launches

On 0.19.2 the same restart path produced a fatal hang — …\logs\desktop\latest.log:

{"level":"error","message":"packaged desktop fatal uncaught exception","timestamp":"2026-08-20T03:05:20.342Z","meta":{"error":{"message":"EPIPE: broken pipe, write", ... "at console.info (file:///.../packaged-main.mjs:29766:31)"}}}

Additional context / suspected root cause

• Gate logic: apps/packaged/src/launcher-after-quit.ts — inspectExistingDesktopForLauncher() restarts when status.windowVisible === false (line 263-282, reason: "headless-owner").
• Every packaged entry runs this gate: apps/packaged/src/index.ts (main) calls waitForLauncherAfterQuit + inspectExistingDesktopForLauncher (lines 142-161) before dispatching to CLI/headless mode — CLI invocations of the same executable are not distinguished from a user double-launch.
• Desktop status visibility: apps/desktop/src/main/runtime.ts status() → windowVisible: !window.isDestroyed() && window.isVisible().
• Agent env includes OD_BIN / OD_NODE_BIN / OD_DAEMON_URL / OD_TOOL_TOKEN (see shell_environment_policy.include_only in the agent spawn), and the agent calls the CLI to register/refresh/export live artifacts — a core workflow for the built-in agent.

Suggested fix directions: route agent-internal CLI calls to the daemon/web IPC instead of spawning the packaged executable; or have the launcher gate treat argv without a desktop/stamp marker (pure CLI invocations) as action=continue without the headless-owner restart; or make the CLI entry bypass the desktop single-instance gate entirely.

Timeline note: restarts occurred at 11:05 (0.19.2, EPIPE hang), 11:17:57, 11:22:09 (0.20.0, clean restart), 11:27:22/28/44 (0.20.0, focus only) — each correlated 1:1 with an agent run (data/runs/*).

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[lefarcen]

Hey @glancake, thanks for the very tight repro — the timestamp correlation between after-quit.log and the agent's OD_BIN calls is especially helpful.

I checked the packaged entry path and the report does line up with the current code: apps/packaged/src/index.ts only takes the headless fast-path for explicit --headless, then otherwise runs inspectExistingDesktopForLauncher() before continuing the packaged launch path. In apps/packaged/src/launcher-after-quit.ts, that gate restarts an existing desktop whenever windowVisible === false. So agent-spawned $env:OD_BIN tools ... / export ... calls can be mistaken for a duplicate GUI launch, which matches the headless-owner restarts you're seeing.

Also relevant here: the agent runtime already injects OD_DAEMON_URL / OD_TOOL_TOKEN, and the daemon already has dedicated /api/tools/live-artifacts/* endpoints, so the likely fix direction is to keep these agent-internal flows on a headless/tool path instead of letting them re-enter the packaged single-instance gate. We'll track this as a bug from here — really appreciate the concrete logs and file pointers.

[glancake]

Thanks for the quick confirmation and for tracking this, @lefarcen! Glad the timestamp correlation made it easy to line up with the code path.

Happy to help however useful — I can test a fix build when one is ready, and can pull any additional logs (desktop/daemon/web) or the repro project if needed. Just let me know.

One extra data point that may help with prioritization: on Windows this isn't just a cosmetic restart — on v0.19.2 the same re-entered gate produced a hard hang (the \EPIPE: broken pipe, write\ was treated as a fatal uncaught exception, WER \AppHangB1). Upgrading to v0.20.0 removed the hang, but the headless-owner restart behavior remains, so every agent artifact/export call still risks killing the running desktop when its window isn't visible.

[lefarcen]

Hey @glancake, that extra Windows detail is very useful — it makes this clearly more than a focus/flicker issue.

The v0.19.2 EPIPE/AppHangB1 path gives us a strong signal that the same launcher re-entry bug was able to escalate into a full desktop hang, even though v0.20.0 now avoids the fatal hang and still restarts the app. If you still have the 0.19.2 latest.log / after-quit.log pair from the hard-hang case, feel free to attach them here — the issue is already actionable without them, but they’d help compare the pre/post-fix behavior around that older failure mode.

And thank you for offering to validate a fix build. If we have a Windows-targeted patch to verify, we’ll follow up on this thread.

[glancake]

Here are the two log files from the v0.19.2 hard-hang case (Windows, 2026-08-20). All timestamps are UTC (local = UTC+8).

Timeline of the hard hang (v0.19.2):

1. 02:48:41Z — desktop session starts (pid 29332), updater finds v0.20.0 and downloads it (download-start → payload-ready at 02:59:37Z).
2. 03:05:13Z — a launcher instance inspects the running desktop, finds windowVisible: false → action=restart reason=headless-owner (the agent's first $env:OD_BIN tool call had just run).
3. 03:05:17Z — new desktop starts (pid 30444).
4. 03:05:20.342Z — first packaged desktop fatal uncaught exception: EPIPE: broken pipe, write, thrown from console.info → packaged-main.mjs:29766 (the console log transport writing to a closed pipe). The same EPIPE repeats 10× between 03:05:20 and 03:05:49.
5. 03:05:30.715Z — main window did-finish-load; after that the process never logs again and stops responding → WER AppHangB1 at 03:05:54Z (local 11:05:54).

Key observation for the pre/post-fix comparison: in v0.19.2 the console-log pipe write failure was treated as a fatal uncaught exception, and the process hung instead of recovering. In v0.20.0 the same launcher re-entry path now completes the restart cleanly (no EPIPE, no hang).

desktop/latest.log — v0.19.2 hard-hang window (02:48:35Z → 03:05:54Z, 75 lines)

{"level":"info","message":"packaged desktop starting","timestamp":"2026-08-20T02:48:35.761Z","meta":{"daemonDataRoot":"C:\\Users\\admin\\AppData\\Roaming\\Open Design\\namespaces\\release-stable-win\\data","electronUserDataRoot":"C:\\Users\\admin\\AppData\\Roaming\\Open Design\\namespaces\\release-stable-win\\user-data","executablePath":"C:\\Users\\admin\\AppData\\Local\\Programs\\Open Design\\Open Design.exe","logPath":"C:\\Users\\admin\\AppData\\Roaming\\Open Design\\namespaces\\release-stable-win\\logs\\desktop\\latest.log","namespace":"release-stable-win","pid":29332,"ppid":41700,"resourceRoot":"C:\\Users\\admin\\AppData\\Local\\Programs\\Open Design\\resources\\open-design","runtimeRoot":"C:\\Users\\admin\\AppData\\Roaming\\Open Design\\namespaces\\release-stable-win\\runtime","source":"packaged"}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:41.684Z","meta":{"args":["[open-design updater] lifecycle",{"currentVersion":"0.19.2","event":"session-start","mode":"package-launcher","namespace":"release-stable-win","platform":"win32","sessionId":"2026-08-20T02:48:41.684Z-29332","source":"packaged","autoCheck":true,"enabled":true,"metadataUrl":"https://releases.open-design.ai/stable/latest/metadata.json"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:41.738Z","meta":{"args":["[open-design desktop] starting desktop IPC server",{"ipc":"\\\\.\\pipe\\open-design-release-stable-win-desktop"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:41.739Z","meta":{"args":["[open-design desktop] desktop IPC server listening",{"ipc":"\\\\.\\pipe\\open-design-release-stable-win-desktop"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:41.741Z","meta":{"args":["[open-design desktop] creating desktop runtime"]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:41.770Z","meta":{"args":["[open-design desktop] main window loadURL start",{"currentUrl":null,"url":"od://app/"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:41.781Z","meta":{"args":["[open-design desktop] main window did-start-loading",{"pendingUrl":"od://app/","url":""}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:41.782Z","meta":{"args":["[open-design desktop] desktop runtime created"]}}
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{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:41.993Z","meta":{"args":["[open-design desktop] main window dom-ready",{"title":"Open Design","url":"od://app/"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:42.236Z","meta":{"args":["[open-design desktop] main window did-finish-load",{"title":"Open Design","url":"od://app/"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:42.237Z","meta":{"args":["[open-design desktop] main window loadURL success",{"url":"od://app/"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T02:48:42.271Z","meta":{"args":["[open-design desktop] main window did-start-loading",{"pendingUrl":null,"url":"od://app/"}]}}
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{"level":"warn","message":"console.warn","timestamp":"2026-08-20T02:55:35.301Z","meta":{"args":["[open-design packaged] net.fetch failed; falling back to undici",{"message":"net::ERR_FAILED","method":"GET","target":"http://127.0.0.1:63255/_next/static/media/Assistant-Bold.0w8ds4ptto6za.woff2"}]}}
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{"level":"error","message":"console.error","timestamp":"2026-08-20T03:04:16.627Z","meta":{"args":["[open-design desktop] main window did-fail-load",{"errorCode":-3,"errorDescription":"","isMainFrame":false,"pendingUrl":null,"validatedURL":"about:srcdoc","url":"od://app/projects/84b1fae4-6db3-46d0-8840-69f65aa6c3bf/conversations/212e0074-43e0-4b99-95ea-86c2c3a70803/files/template.html"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:13.597Z","meta":{"args":["[open-design desktop] desktop IPC request start",{"input":null,"type":"status"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:13.597Z","meta":{"args":["[open-design desktop] desktop IPC request end",{"durationMs":0,"type":"status"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:13.602Z","meta":{"args":["[open-design desktop] desktop IPC request start",{"input":null,"type":"shutdown"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:13.603Z","meta":{"args":["[open-design desktop] desktop IPC request end",{"durationMs":1,"type":"shutdown"}]}}
{"level":"warn","message":"console.warn","timestamp":"2026-08-20T03:05:15.956Z","meta":{"args":["[open-design packaged] net.fetch failed; falling back to undici",{"message":"net::ERR_CONNECTION_REFUSED","method":"GET","target":"http://127.0.0.1:63255/api/projects/84b1fae4-6db3-46d0-8840-69f65aa6c3bf/collab/status"}]}}
{"level":"warn","message":"console.warn","timestamp":"2026-08-20T03:05:15.960Z","meta":{"args":["[open-design packaged] od:// proxy fetch failed; retrying",{"attempt":1,"attempts":3,"message":"fetch failed","target":"http://127.0.0.1:63255/api/projects/84b1fae4-6db3-46d0-8840-69f65aa6c3bf/collab/status","waitMs":150}]}}
{"level":"info","message":"packaged desktop exit","timestamp":"2026-08-20T03:05:16.977Z","meta":{"code":0}}
{"level":"info","message":"packaged desktop starting","timestamp":"2026-08-20T03:05:17.193Z","meta":{"daemonDataRoot":"C:\\Users\\admin\\AppData\\Roaming\\Open Design\\namespaces\\release-stable-win\\data","electronUserDataRoot":"C:\\Users\\admin\\AppData\\Roaming\\Open Design\\namespaces\\release-stable-win\\user-data","executablePath":"C:\\Users\\admin\\AppData\\Local\\Programs\\Open Design\\Open Design.exe","logPath":"C:\\Users\\admin\\AppData\\Roaming\\Open Design\\namespaces\\release-stable-win\\logs\\desktop\\latest.log","namespace":"release-stable-win","pid":30444,"ppid":29656,"resourceRoot":"C:\\Users\\admin\\AppData\\Local\\Programs\\Open Design\\resources\\open-design","runtimeRoot":"C:\\Users\\admin\\AppData\\Roaming\\Open Design\\namespaces\\release-stable-win\\runtime","source":"packaged"}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:20.243Z","meta":{"args":["[open-design updater] lifecycle",{"currentVersion":"0.19.2","event":"session-start","mode":"package-launcher","namespace":"release-stable-win","platform":"win32","sessionId":"2026-08-20T03:05:20.243Z-30444","source":"packaged","autoCheck":true,"enabled":true,"metadataUrl":"https://releases.open-design.ai/stable/latest/metadata.json"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:20.286Z","meta":{"args":["[open-design desktop] starting desktop IPC server",{"ipc":"\\\\.\\pipe\\open-design-release-stable-win-desktop"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:20.288Z","meta":{"args":["[open-design desktop] desktop IPC server listening",{"ipc":"\\\\.\\pipe\\open-design-release-stable-win-desktop"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:20.290Z","meta":{"args":["[open-design desktop] creating desktop runtime"]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:20.314Z","meta":{"args":["[open-design desktop] main window loadURL start",{"currentUrl":null,"url":"od://app/"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:20.328Z","meta":{"args":["[open-design desktop] main window did-start-loading",{"pendingUrl":"od://app/","url":""}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:20.329Z","meta":{"args":["[open-design desktop] desktop runtime created"]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:20.342Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at runDesktopMain (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:20890:11)\n    at process.processTicksAndRejections (node:internal/process/task_queues:104:5)\n    at async main (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:30644:3)"}}}
{"level":"error","message":"packaged desktop fatal uncaught exception","timestamp":"2026-08-20T03:05:20.342Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at runDesktopMain (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:20890:11)\n    at process.processTicksAndRejections (node:internal/process/task_queues:104:5)\n    at async main (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:30644:3)"}}}
{"level":"error","message":"console.error","timestamp":"2026-08-20T03:05:20.343Z","meta":{"args":["desktop main fatal uncaught exception",{"error":{"errno":-4047,"syscall":"write","code":"EPIPE"}}]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:20.343Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at runDesktopMain (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:20890:11)\n    at process.processTicksAndRejections (node:internal/process/task_queues:104:5)\n    at async main (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:30644:3)"}}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:20.344Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at runDesktopMain (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:20890:11)\n    at process.processTicksAndRejections (node:internal/process/task_queues:104:5)\n    at async main (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:30644:3)"}}}
{"level":"warn","message":"console.warn","timestamp":"2026-08-20T03:05:25.332Z","meta":{"args":["[open-design packaged] net.fetch failed; falling back to undici",{"message":"net::ERR_FAILED","method":"GET","target":"http://127.0.0.1:56399/fonts/AlbertSans-VariableFont_wght.ttf"}]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:25.336Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.warn (node:internal/console/constructor:437:26)\n    at console.warn (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29770:31)\n    at file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:30179:15\n    at async fetchOdTargetOnce (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:30029:20)\n    at async fetchOdTargetWithTransientRetry (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:30115:14)"}}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:26.174Z","meta":{"args":["[open-design desktop] main window dom-ready",{"title":"Open Design","url":"od://app/"}]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:26.174Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at WebContents.<anonymous> (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:5081:13)\n    at WebContents.emit (node:events:509:28)"}}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:27.299Z","meta":{"args":["[open-design updater] lifecycle",{"currentVersion":"0.19.2","event":"restore-active-release","mode":"package-launcher","namespace":"release-stable-win","platform":"win32","sessionId":"2026-08-20T03:05:20.243Z-30444","source":"packaged","key":"0.20.0-win-x64-83a385730aec","version":"0.20.0"}]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:27.300Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at logUpdateEvent (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9615:18)\n    at restoreStoreState (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9775:7)\n    at async restoreStoreStateOnce (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9828:24)"}}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:29.315Z","meta":{"args":["[open-design updater] lifecycle",{"currentVersion":"0.19.2","event":"release-lifecycle","mode":"package-launcher","namespace":"release-stable-win","platform":"win32","sessionId":"2026-08-20T03:05:20.243Z-30444","source":"packaged","removed":0,"retained":1,"total":1,"trigger":"cold-start"}]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:29.316Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at logUpdateEvent (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9615:18)\n    at restoreStoreState (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9793:7)\n    at async restoreStoreStateOnce (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9828:24)"}}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:30.034Z","meta":{"args":["[open-design updater] lifecycle",{"currentVersion":"0.19.2","event":"state","mode":"package-launcher","namespace":"release-stable-win","platform":"win32","sessionId":"2026-08-20T03:05:20.243Z-30444","source":"packaged","availableVersion":"0.20.0","next":"downloaded","previous":"idle"}]}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:30.035Z","meta":{"args":["[open-design updater] lifecycle",{"currentVersion":"0.19.2","event":"check-start","mode":"package-launcher","namespace":"release-stable-win","platform":"win32","sessionId":"2026-08-20T03:05:20.243Z-30444","source":"packaged","metadataUrl":"https://releases.open-design.ai/stable/latest/metadata.json"}]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:30.050Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at logUpdateEvent (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9615:18)\n    at setState (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9644:7)\n    at restoreStoreState (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:9818:12)"}}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:30.715Z","meta":{"args":["[open-design desktop] main window did-finish-load",{"title":"Open Design","url":"od://app/"}]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:30.716Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at WebContents.<anonymous> (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:5087:13)\n    at WebContents.emit (node:events:521:24)"}}}
{"level":"info","message":"console.info","timestamp":"2026-08-20T03:05:30.716Z","meta":{"args":["[open-design desktop] main window loadURL success",{"url":"od://app/"}]}}
{"level":"error","message":"packaged desktop uncaught exception","timestamp":"2026-08-20T03:05:49.350Z","meta":{"error":{"message":"EPIPE: broken pipe, write","name":"Error","stack":"Error: EPIPE: broken pipe, write\n    at Socket._write (node:internal/net:75:18)\n    at writeOrBuffer (node:internal/streams/writable:570:12)\n    at _write (node:internal/streams/writable:499:10)\n    at Writable.write (node:internal/streams/writable:508:10)\n    at console.value (node:internal/console/constructor:313:16)\n    at console.info (node:internal/console/constructor:423:26)\n    at console.info (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:29766:31)\n    at tick (file:///C:/Users/admin/AppData/Local/Programs/Open%20Design/resources/app/prebundled/packaged-main.mjs:5542:17)\n    at process.processTicksAndRejections (node:internal/process/task_queues:104:5)"}}}

launcher/after-quit.log (full, 25 lines — includes the v0.19.2 hang case and later v0.20.0 sessions)

2026-08-20T02:48:35.747Z inspect-unavailable namespace=release-stable-win action=continue error=connect ENOENT \\.\pipe\open-design-release-stable-win-desktop
2026-08-20T03:05:13.601Z inspect-found-existing namespace=release-stable-win action=restart reason=headless-owner pid=29332
2026-08-20T03:05:17.186Z inspect-found-existing namespace=release-stable-win shutdown=exited reason=headless-owner pid=29332
2026-08-20T03:15:50.643Z inspect-unavailable namespace=release-stable-win action=continue error=connect ENOENT \\.\pipe\open-design-release-stable-win-desktop
2026-08-20T03:16:21.270Z armed targetPid=12712 timeoutMs=600000
2026-08-20T03:16:24.882Z observed-exit targetPid=12712
2026-08-20T03:16:24.886Z inspect-unavailable namespace=release-stable-win action=continue error=connect ENOENT \\.\pipe\open-design-release-stable-win-desktop
2026-08-20T03:17:57.461Z inspect-found-existing namespace=release-stable-win action=restart reason=headless-owner pid=23496
2026-08-20T03:18:01.684Z inspect-found-existing namespace=release-stable-win shutdown=exited reason=headless-owner pid=23496
2026-08-20T03:18:01.854Z armed targetPid=9820 timeoutMs=60000
2026-08-20T03:18:01.855Z observed-exit targetPid=9820
2026-08-20T03:18:01.858Z inspect-unavailable namespace=release-stable-win action=continue error=connect ENOENT \\.\pipe\open-design-release-stable-win-desktop
2026-08-20T03:22:09.855Z inspect-found-existing namespace=release-stable-win action=restart reason=headless-owner pid=41904
2026-08-20T03:22:14.876Z inspect-found-existing namespace=release-stable-win shutdown=timed-out reason=headless-owner pid=41904
2026-08-20T03:22:14.885Z force-stop headless-owner pid=41904 outcome=sigterm
2026-08-20T03:22:15.094Z armed targetPid=39692 timeoutMs=60000
2026-08-20T03:22:15.096Z observed-exit targetPid=39692
2026-08-20T03:22:15.099Z inspect-unavailable namespace=release-stable-win action=continue error=connect ENOENT \\.\pipe\open-design-release-stable-win-desktop
2026-08-20T03:27:22.993Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:27:28.927Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:27:44.026Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:28:05.523Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:28:24.203Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:32:33.151Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:33:17.781Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:52:55.166Z inspect-found-existing namespace=release-stable-win focus=accepted
2026-08-20T03:52:55.377Z inspect-found-existing namespace=release-stable-win focus=accepted

Happy to grab any other logs (daemon/web for the same window, the run events for the triggering agent call, WER Report.wer) if useful. And still happy to validate a Windows fix build when one is ready.

[lefarcen]

Hey @glancake, this is excellent evidence — thank you for taking the time to lay it out so cleanly.

These logs help split the problem into two layers much more clearly: first, the packaged CLI call re-enters the launcher and triggers the headless-owner restart at 03:05:13Z; then, on v0.19.2 specifically, the replacement desktop starts and immediately falls into repeated EPIPE uncaught exceptions from the packaged console/logging path. That lines up with the current packaged logging code too: apps/packaged/src/logging.ts wraps console.info / console.warn and treats non-harmless uncaught exceptions as fatal, so your older stack traces are very consistent with a restart-time pipe/logging failure on top of the launcher re-entry bug.

So at this point the current bug remains the launcher/CLI re-entry itself, and your v0.19.2 logs also give us a strong breadcrumb for why that path used to escalate into a hard hang on Windows. No need to gather more right away unless you already have the triggering run events or WER report handy. And thank you again for offering to validate a Windows fix build when we have one.

[glancake]

Thanks @lefarcen — glad the two-layer split landed (launcher re-entry + v0.19.2 logging fatal on EPIPE). Since you mentioned the triggering run events would be handy, I happened to have them locally, so here they are.

Triggering agent tool calls vs launcher gate (all local time, UTC+8):

Agent OD_BIN tool call (run events)	Launcher gate event (after-quit.log)	Delta
11:05:13.419 tools live-artifacts create --input artifact.json (run daf5ac8d)	11:05:13.601Z action=restart reason=headless-owner pid=29332	0.18s
11:17:57.282 tools live-artifacts list --format compact (run a552260b)	11:17:57.461Z action=restart reason=headless-owner pid=23496	0.18s
11:22:09.665 tools live-artifacts list --format compact (run 32cfebfb)	11:22:09.855Z action=restart reason=headless-owner pid=41904	0.19s

(Note: the first row is local-time on the left vs UTC on the right — 11:05:13.419 local = 03:05:13.419Z.)

So every one of the three observed headless-owner restarts (the 11:05 one being the one that then escalated into the v0.19.2 EPIPE hang) was preceded ~0.2s by an agent-spawned $env:OD_BIN tools live-artifacts ... invocation — the agent's standard "register/verify refreshable artifact" flow. Consistent with your read that the fix is keeping these agent-internal flows on the daemon/tool path (OD_DAEMON_URL + /api/tools/live-artifacts/*) instead of re-entering the packaged single-instance gate.

On the WER report: I couldn't attach Report.wer for the AppHangB1 — C:\ProgramData\Microsoft\Windows\WER\ReportArchive\...\Report.wer is ACL-denied even for the interactive user on this Windows setup. If a copy would still help, I can try reading it from an elevated context or grab the minidump path instead — otherwise the run-events + desktop/launcher logs above should cover it.

And yes, happy to validate a Windows fix build whenever one's ready.

[lefarcen]

Hey @glancake, this is perfect — the ~0.18–0.19s deltas are about as clean a causality signal as we could hope for.

The first row is especially useful because it ties the v0.19.2 hang case to a concrete tools live-artifacts create --input artifact.json invocation right before the launcher took the headless-owner restart path. Together with the later list --format compact rows, this makes the pattern look very consistent across the agent's normal live-artifact workflow rather than a one-off launch race.

No need to go chase Report.wer from an elevated context just for this issue at the moment — the run events plus the desktop/launcher logs already give a pretty solid picture. If we later need the minidump path or WER details to verify a separate Windows crash fix, we can ask then. And thank you again for being willing to validate a Windows build once a patch is ready.

[glancake]

Great — glad the deltas and the run-event correlation held up, and that the v0.19.2 case now has a concrete triggering call attached to it. Agreed that it reads as a systemic pattern across the live-artifact workflow rather than a one-off race.

Sounds good on the WER front — the current evidence set is fine. I'll keep an eye on this thread; whenever you have a Windows-targeted patch, happy to validate it here. Thanks for the quick turnaround on triaging this!

[lefarcen]

PR #7388 is now up for this bug.

It takes the launcher re-entry path described here and adds a dedicated packaged-side guard so daemon-CLI invocations ($OD_BIN tools ... / export ...) respawn in Node mode instead of entering the single-instance gate. Keeping this issue open until the fix lands and is validated.

[lefarcen]

PR #7494 is also up for #7154.

This variant isolates MCP/headless launches onto a separate packaged runtime namespace/socket while keeping the desktop data namespace shared, which targets the same EADDRINUSE / desktop-restart class described in this report. Keeping the issue open until a fix lands and is validated.