Jannes Stubbemann 6d2eab742f fix(server): retry runs that hit a sandbox provider worker restart window instead of failing setup (#10212) ...

## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work
> - Agent runs execute in sandbox environments acquired through provider
plugins (e.g. the Kubernetes sandbox provider)
> - Lease acquisition happens during run setup, before the adapter
executes
> - When a provider plugin's worker is momentarily unavailable (a server
or plugin restart window), lease acquisition throws "Sandbox provider
... is installed via plugin ..., but its worker is not running."
> - The heartbeat setup path records that as a terminal `setup_failed`:
no retry classifier matches the message, so the run dies instantly even
though the worker returns seconds later
> - This PR classifies that transient condition as retryable
infrastructure so the run is retried instead of being lost to a restart
blip
> - The benefit is that routine restarts no longer produce spurious
instant run failures

## Linked Issues or Issue Description

No public GitHub issue exists; describing inline following the bug
report template.

**What happened**

During a brief sandbox-provider-worker restart window, several runs
failed instantly with `setup_failed` ("... but its worker is not
running."), while runs on the same agent moments earlier and later
succeeded.

**Expected behavior**

A transient, self-healing worker-unavailable condition should schedule a
bounded retry, not terminally fail the run.

**Steps to reproduce**

Trigger a run while the sandbox provider plugin worker is momentarily
unavailable (a server or plugin restart). Lease acquisition throws the
worker-not-running error and the run is finalized as `setup_failed` with
no retry. The recovery test added here reproduces the classification
path.

**Deployment mode**

Cloud multi-tenant execution (Kubernetes sandbox provider plugin).

## What Changed

- Added a dedicated, readable predicate that recognizes the transient
sandbox-provider-worker-unavailable lease failure and treats it as
retryable infrastructure, so the heartbeat schedules a bounded
continuation retry instead of finalizing terminally
- The predicate is anchored to the full lease-failure phrasing (`is
installed via plugin ... but its worker is not running`) so it cannot
match the permanent "provider not installed" message emitted by config
validation
- Added tests proving the readiness poll already waits the full deadline
while the worker handle is absent or `starting` (registered-late
coverage); no poll behavior change was needed

## Verification

- `cd server && npx vitest run
src/__tests__/environment-runtime.test.ts` — poll exhaustion +
registered-late cases
- `npx vitest run src/__tests__/heartbeat-process-recovery.test.ts` —
worker-unavailable message schedules a retry; a non-matching permanent
provider failure still escalates terminally (negative case)

## Risks

Low risk. The retry is bounded by the existing
infrastructure-continuation attempt cap (max 3), the message match is
narrow enough to exclude the permanent provider-not-installed failure
(covered by a negative test), and no readiness-poll or lease-acquisition
behavior changed.
## Model Used

Claude (Anthropic) via Claude Code. Implementation and tests authored by
a Claude Sonnet-class model (`claude-sonnet-5`) dispatched as isolated
per-task implementer agents under a multi-agent orchestration workflow;
root-cause investigation, planning, and two-stage adversarial code
review performed by additional Claude agents. Extended thinking and tool
use enabled throughout.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change and contains no internal
Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [ ] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [ ] All Paperclip CI gates are green
- [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge

2026-08-12 16:43:48 -07:00

..

scripts

…

src

fix(server): retry runs that hit a sandbox provider worker restart window instead of failing setup (#10212)

2026-08-12 16:43:48 -07:00

CHANGELOG.md

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package.json

fix(server): export manual OpenTelemetry spans (#10565)

2026-07-31 12:47:57 -07:00

tsconfig.json

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vitest.config.ts

fix(test): stop flaky server-suite afterAll hook timeouts (#10024)

2026-07-22 11:51:30 -07:00