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Nicky LeachandPaperclip
dc7a1a020a
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - The adapter runtime settles each run through a duplex control
channel
> - A lost channel can leave the remote session-close call without a
usable peer
> - The call has no deadline, so run teardown can wait for the full
adapter timeout
> - This pull request skips that remote call after the runtime latches
channel loss
> - The benefit is faster run finalization while the local cleanup
effects remain
## Linked Issues or Issue Description
**What happened?**
The run teardown placed a remote session-close call over a duplex
control channel that the runtime had already latched as lost. The call
blocked until the adapter execution timeout released it.
**Expected behavior**
Run teardown should release the local warm handle and continue when the
duplex control channel has already failed.
**Steps to reproduce**
1. Start an adapter run with the duplex control channel.
2. Latch a channel-loss state before settlement.
3. Use a runtime whose close call never resolves.
4. Confirm that teardown returns without a remote close call.
**Paperclip version or commit**
Commit d966069a78.
**Deployment mode**
Built from source.
**Agent adapter(s) involved**
Not adapter-specific. The change applies to the shared adapter runtime.
**Database mode**
Not database-related.
**Additional context**
Pull request #12373 used a larger approach for the same failure. The
board closed that pull request. This pull request contains the smaller
change.
## What Changed
- Add the required readonly `skipRemoteClose` field to the runtime
settlement plan.
- Set the field from the latched channel-loss state on the turn-finalize
plan.
- Set the field to `false` on every other settlement plan.
- Release the warm handle locally before the `end_session` step returns
without the remote call.
- Add a test that drives the lost-channel path through the settlement
sequence.
## Verification
- `./node_modules/.bin/tsc --noEmit -p packages/adapter-utils`
- `./node_modules/.bin/vitest run
packages/adapter-utils/src/acpx-engine/execute.test.ts` passes the new
test. Three existing tests fail on the merge base: two
session-fingerprint tests and one workspace-hints test.
- `./node_modules/.bin/vitest run
packages/adapter-utils/src/acpx-engine/run-fault-matrix.test.ts` reports
20 passed.
- Full CI will run on this pull request.
## Risks
The skipped remote close also skips the vendored runtime caller for
`closeBackendSession`. The run can keep a retained client after duplex
loss. A separate follow-up owns that residual. The environment lease
still releases in the teardown `finally` block.
## Model Used
OpenAI Codex, GPT-5, with tool use and code review assistance.
## 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>