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Nicky LeachandPaperclip cc42a67e7e fix(adapter-utils): extend the duplex fail-closed run disposition to the CLI lane (#11966 )

## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work
> - Paperclip runs agents through adapter execution lanes
> - Duplex adapters can lose their control channel before a process
completes
> - The ACP lane already fails closed, but the CLI lane can report false
success
> - This pull request applies the same completion rule to the CLI lane
and shares the loss code
> - The benefit is consistent failure reporting when a duplex channel
closes during a run

## Linked Issues or Issue Description

**What happened?**

A CLI-lane duplex run can lose its control channel before clean process
completion. The run can then report `succeeded` with exit code 0 and no
error code.

**Expected behavior**

The execution target must fail closed when the channel dies before clean
completion. It must return exit code 1, the typed `duplex_channel_lost`
error code, and a short stderr note.

**Steps to reproduce**

1. Start a duplex adapter run through the CLI execution lane.
2. Close the duplex control channel before the process completes
cleanly.
3. Inspect the run result and error code.

**Paperclip version or commit**

Commit `5e01523d4eb6df4a20a0bddd05374c9c42225203`.

**Deployment mode**

Built from source.

**Installation method**

Built from source with pnpm.

**Agent adapter(s) involved**

Claude Code, Codex, Cursor, Gemini, Kimi, OpenCode, and Pi local
adapters.

**Database mode**

Not database-related.

## What Changed

- Add an optional `errorCode` field to `RunProcessResult`.
- Add a one-read completion seam to the execution target process
options.
- Fail closed when a duplex channel dies before clean process
completion.
- Add `settleRunDisposition()` to atomically read and mark orderly
completion.
- Share the typed duplex loss error code across the ACP and CLI lanes.
- Mark non-success terminal results as orderly completion before
teardown.
- Wire the seam through the seven duplex adapters.
- Add regression tests for channel loss, clean completion, and non-clean
terminal results.

## Verification

- `npx vitest run
packages/adapter-utils/src/execution-target-sandbox.test.ts` — 118
passed.
- `npx vitest run packages/adapter-utils/src/acpx-engine/execute.test.ts
-t "sandbox duplex run-disposition seam"` — 4 passed.
- The author confirmed a clean type-check for
`@paperclipai/adapter-utils` and the seven duplex adapter packages.
- Pre-existing environment failures remain outside this change. They
include `EACCES mkdir '/srv/paperclip'` and remote file-size setup
failures.

## Risks

The change alters terminal status for CLI duplex runs that lose control
before clean completion. The typed error code and stderr note keep the
failure visible. The broker marks failed, cancelled, and timed-out
results as orderly completion to prevent false loss events during
teardown.

## Model Used

OpenAI Codex, GPT-5, tool use and code execution, with the standard
GPT-5 context window. The model assisted with the implementation and
test work.

## 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 (e.g. `docs/...`, `fix/...`)
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
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge

---------

Co-authored-by: Paperclip <noreply@paperclip.ing>

2026-08-22 11:12:51 -07:00

src

fix(adapter-utils): extend the duplex fail-closed run disposition to the CLI lane (#11966 )

2026-08-22 11:12:51 -07:00

CHANGELOG.md

fix: bound workspace Git scans (#11572 )

2026-08-17 22:11:30 -05:00

package.json

fix(build): enforce Node 24 across Paperclip (#11792 )

2026-08-21 10:17:52 -07:00

README.md

PAPA-430: workspace finalize gates + no-remote-git enforcement (#6969 )

2026-05-29 08:25:29 -07:00

tsconfig.json

Fix root TypeScript solution config

2026-03-09 14:09:30 -05:00

README.md

@paperclipai/adapter-utils

Shared utilities for Paperclip adapters: process spawning, environment injection, sandbox/SSH transport, workspace sync, and the round-trip helpers that move code between the local execution-workspace cwd and wherever the agent actually runs.

For the adapter-author guide see docs/adapters/creating-an-adapter.md and the in-repo notes at packages/adapters/AUTHORING.md.

No-remote-git contract

The local execution-workspace cwd is the only persistence boundary across runs. No adapter may depend on a git remote for cross-run state.

Adapters that run the agent on a different host should use the SSH round-trip helpers in src/ssh.ts:

prepareWorkspaceForSshExecution({ spec, localDir, remoteDir }) — bundles the local cwd (tracked files, dirty edits, untracked additions, and the git history needed to reconstruct it) to remoteDir before the run starts. Runs with no git remote configured.
restoreWorkspaceFromSshExecution({ spec, localDir, remoteDir, ... }) — syncs the remote cwd back into localDir after the run, including any new commits the agent created. Also runs with no git remote configured.

prepareRemoteManagedRuntime in src/remote-managed-runtime.ts wraps both calls for adapters that want a per-run remote workspace and an automatic restoreWorkspace() finally hook.

The invariant is pinned by the no-remote-git contract case in src/ssh-fixture.test.ts, which asserts that a remote-only commit propagates to the local worktree through the prepare → restore round-trip with no git remote configured at any point. Do not regress that test.