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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - A board user can interrupt a native run with a comment. The next turn should start soon after the run stops > - When the stop leaves sandbox files unsaved, recovery saves them, re-stops the sandbox, and then queues the destroy for an ephemeral lease > - #19224 kept the verified stop on that lease as `workspaceRecoveryCleanup.stopReceipt`, and taught the continuation gates to accept it > - One gate was missed: `acknowledgedNativeStopExecutionHasStopped`. An interrupt that lands before the provider turn opens leaves no gating hold, so the saved comment goes through this gate, not through the explicit continuation gate > - That gate still wanted the raw `remoteExecutionTermination` receipt, so the comment waited about 5 minutes for the destroy retry > - This pull request lets that gate accept the carried-forward stop receipt too > - The benefit is that an interrupt during startup continues right after recovery, as #19224 intended for every lease policy ## Linked Issues or Issue Description Refs #19224 Refs #19206 **What happened?** On hosted staging, an `interrupt: true` comment reached a native run of an ephemeral-lease agent while the run was still in startup (the provider pack upload). The run stopped before any provider turn. Recovery saved its files at once. The follow-up turn started about 6 minutes after the interrupt. The stopped run's lease was released by `pending_cleanup_retry`, and the follow-up started 2 seconds later. Agents whose interrupt landed after the provider turn opened continued in 30 to 50 seconds on the same build. **Expected behavior** The saved comment starts a new turn right after recovery saves the files and the sandbox is stopped. The destroy of a stopped sandbox is cleanup and must not hold the next turn. **Steps to reproduce** 1. Use an agent whose sandbox lease is ephemeral (destroy after each turn). 2. Post an `interrupt: true` comment while its native run is still starting, before the provider turn opens. 3. Let recovery save the files. See the follow-up start only after the destroy retry releases the lease. **Paperclip version or commit** Hosted staging at `e37ab23d` (includes #19206 and #19224). ## What Changed - `server/src/services/acknowledged-native-stop.ts`: `acknowledgedNativeStopExecutionHasStopped` accepts a remote lease that has `hasRemoteTerminationReceipt` or `hasRecoveredCleanupStopReceipt`. Before, it accepted only the first one. - `server/src/services/workspace-recovery.test.ts`: new regression for a pre-turn interrupt on an ephemeral lease. Recovery completes, the destroy is queued, and the saved comment is handed to `resumeRemoteStopComments` twice. With a verified carried stop, exactly one turn starts while the lease is still `pending_cleanup`. Without the stop receipt, the comment stays deferred and no turn starts. - `doc/execution-semantics.md`: one sentence that extends the #19224 paragraph to the pre-turn Stop case. ## Verification - Red before the fix: `cd server && npx vitest run src/services/workspace-recovery.test.ts -t "starts the interrupt redirect once after recovery"` failed the `verified-stop` case with `expected [] to have a length of 1 but got +0`. The `no-stop-receipt` case passed. - Green after the fix: the same command passes both cases. - `npx vitest run src/services/workspace-recovery.test.ts`: 382 passed. - Related suites pass: `acknowledged-native-stop`, `explicit-native-continuation`, `heartbeat/run-control`, `heartbeat/recovery`, `heartbeat/native-stop-evidence-read`, `native-session-executor`, `heartbeat-observed-workspace-preservation`, `native-startup-cleanup-recovery`, `execution-control-work`. Two `run-control` cases timed out at 30 s under parallel load and passed when run alone. - `pnpm --filter @paperclipai/server typecheck` passes. - Not done: a live re-run on staging. This change is not deployed. ## Risks - Low risk. `hasRecoveredCleanupStopReceipt` is the same check #19224 added to the other gates. It is true only for a lease whose recovery cleanup belongs to its own run, which was released, and whose carried stop receipt matches the company, run, lease, provider, and provider lease id. A lease without that receipt still blocks. - The no-replay hold is unchanged. The successor still goes through ordinary admission with all task gates. The test calls the resume twice and sees one turn only. > For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and discuss it in `#dev` before opening the PR. Feature PRs that overlap with planned core work may need to be redirected — check the roadmap first. See `CONTRIBUTING.md`. ## Model Used - Claude Opus 5.5 (Anthropic), model ID `claude-opus-5-5`, used through Claude Code with tool use (shell, file edits, browser reads of staging). Extended reasoning was used. ## 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 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>