Auto-Restart Dev Server When Idle
This flag is for people developing Paperclip itself. When you run the app with pnpm dev:once, the dev runner watches backend sources and pending database migrations; when the running boot goes stale, it can restart the server for you — but only once the instance is idle, so no queued or running local agent run gets killed mid-flight.
Turn it on
- Run the app under
pnpm dev:once. - Go to Settings → Instance settings → Experimental.
- Turn on Auto-Restart Dev Server When Idle — "In
pnpm dev:once, wait for all queued and running local agent runs to finish, then restart the server automatically when backend changes or migrations make the current boot stale."
How it behaves
- Stale detection runs regardless of the flag. The dev runner watches the backend workspaces (
server,cli,packages/*, config files) and pending migrations. When something changes, a Restart Required banner appears at the top of the app explaining why — backend files changed, migrations pending, or both — with the changed paths listed. - With the flag on, the banner shows an Auto-Restart On pill and the runner takes over: it waits until there are zero queued/running local agent runs ("Waiting for N live runs to finish"), applies pending migrations, and restarts the server child. When the instance is already idle you'll see "Auto-restart will trigger when the instance is idle."
- With the flag off, the banner instead advises restarting
pnpm dev:onceyourself when it's safe. - Restart now is always available on the banner for an immediate manual restart. It bypasses the idle gate — and warns you first if live runs would be interrupted.
Why it exists
During active development on Paperclip, backend edits and new migrations leave the server on a stale boot. Restarting blindly would interrupt in-flight agent runs; never restarting means testing against stale code. This flag automates the restart at the one moment it's safe: when nothing is running.
When it's off / caveats
- Off means manual restarts only — detection and the banner still work.
- The mechanism only exists under
pnpm dev:once. It has no effect on production deployments or other dev modes; leave it off unless you're hacking on Paperclip. - Auto-restart applies pending migrations automatically before rebooting.
Where to go next
- Server Info Debug View — see the running commit and last restart from the account drawer.
- Experimental features overview