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DottaandClaude Opus 5.5
4612fa9fb4
## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - Native runs on Daytona start a `paperclip-runnerd` process in a sandbox. A graceful shutdown (every rolling deploy) suspends live native runs "without cancelling provider work". The next boot then decides how each run continues. > - #19583, #19616 and #19684 let restart recovery start a remote bootstrap again when durable evidence proves that no provider work exists. > - A chaos replay found another window. The drain suspended a remote run just after its sandbox runner opened the provider session, before the controller sent a turn and before a session snapshot existed. > - Recovery accepted only an unfinished `session.open` in the controller checkpoint, so it blocked the task as ambiguous. A Retry recovered it, but automatic continuation was lost. > - A related replay showed that the same-run bootstrap reuses the sandbox. The interrupted runner can still hold the runner ingress port there (`runner_ingress_bind_conflict`). > - This pull request proves the "session opened, no turn" case and stops the interrupted runner before relaunch. > - The benefit is that a deploy during Daytona startup continues automatically, without a port conflict. ## Linked Issues or Issue Description **What happened?** A chaos replay (ACPX Claude on Daytona) sent SIGTERM while a remote run was starting. The drain recorded `restart_suspended`. The dying controller still launched the runner and finished `session.open`. On the next boot, restart recovery returned `ambiguous_remote_recovery_evidence` with disposition `blocked`. The decrypted controller checkpoint of that run showed: - `run.prepare` completed and `session.open` completed (provider session opened). - Committed events `session.started`, `session.capabilities.updated` and `session.goal.snapshot` (`ackedSourceSeq: 3`). - No turn command. No run-profile session snapshot and no projected provider events. On the next run in that replay, a same-run bootstrap relaunched the runner in the same sandbox (one lease for all attempts). It failed with `runner_ingress_bind_conflict: failed to bind listener: Address already in use`, because the interrupted runner from 51 s earlier was still listening there. The bounded same-run retry recovered it on its last attempt. **Expected behavior** When the durable controller record proves that no turn was ever sent, recovery starts the bootstrap again. It first stops the interrupted runner in the reused sandbox. **Steps to reproduce** 1. Start a native run on a Daytona environment. 2. Send SIGTERM to the control plane while the runner opens its provider session. 3. Restart the control plane after the controller lease expires. 4. See that restart recovery blocks the task with `ambiguous_remote_recovery_evidence`. Root cause: in `server/src/services/native-runtime/native-restart-recovery.ts`, the remote checkpoint proof (`remoteBootstrapProvenIncomplete`, #19583) required an unfinished `session.open` with no committed events, and no provider events at all. A completed `session.open` with only session-open events had no rule, so it fell through to `ambiguous_remote_recovery_evidence`. Refs #19583, #19616, #19684, #19524 ## What Changed - `native-bootstrap-proof.ts`: new `runnerdStateHasNoProviderTurn` proof. The state must hold only `run.prepare` and `session.open` (pending or completed) and no warm, staged or adopted state. Every committed event must be a session-open event, with contiguous sequence numbers from 1, so no event is hidden. Only the controller issues turn commands, and it writes each one to Postgres before sending it. - `native-runner-checkpoint.ts`: `nativeRunnerCheckpointRemoteBootstrapProof` replaces `nativeRunnerCheckpointProvesIncompleteBootstrap`. It also reads a bounded number of `event:N` parts and returns which proof holds. It still rebuilds the state in memory. - `native-restart-recovery.ts`: a remote run can now claim `bootstrap_incomplete` with reason `remote_session_opened_without_turn`. Projected provider events may only be session-open events (`harness.ready`, `session.started`, `session.resumed`, `session.updated`), and only together with the stronger session-opened proof. A turn or provider event still blocks. - `native-session-executor.ts`: - For a remote sandbox target, the executor accepts the same proof on the restored record. - Before the same-run bootstrap relaunches, `stopStaleRemoteRunnerBeforeBootstrap` stops the interrupted runner in the reused sandbox. It uses the verified identity marker and process check from reattachment, which signals only a process whose identity matches this run: SIGTERM, a wait of up to 10 s, then SIGKILL. - The stop is best effort. If no prior runner can be verified, nothing is stopped, and the bounded same-run retry still handles any conflict. - `doc/run-log-events.md`: document the reason and the stop. ## Verification - Red, then green: `cd server && npx vitest run src/services/native-runtime/native-runner-restart-recovery.integration.test.ts -t "drained remote"`. Before the fix, the opened-session case (with a projected `session.started`) returned `blocked` / `ambiguous_remote_recovery_evidence`. - These keep the hold: a `turn.start` command, a committed `turn.started`, an acknowledged event that is missing from the record, and a projected `turn.started`. The executor test restores the checkpoint and checks that the local proof is false and the remote proof is true. - Regression: `native-runner-restart-recovery.integration`, `native-session-executor`, `native-restart-recovery`, `native-bootstrap-retry.integration` and `heartbeat/recovery`: 1460 passed, 14 skipped. - Stale runner stop: controlled sandbox-runner tests (`native-session-executor.test.ts`, "stale runner stop before a same-run remote bootstrap") run the real reattachment identity and process scripts against a fake sandbox runner: - a verified runner that exits on SIGTERM gets SIGTERM only; - a runner that ignores SIGTERM gets SIGTERM, then SIGKILL; - a runner with another identity gets no signal; - no live prior runner means no signal. - Live Daytona proof (wave `w-20261107T021837-s29`, ACPX Claude, `--faults K2 --triggers time,result`, 4 tasks, concurrency 1). The image was built from current master (`paperclip-daytona-runner@sha256:71f711ab…`), and its content id matches this branch. - All 4 tasks crossed a graceful restart, and all passed R1. Two of the K2s fired on the `result` trigger, during a running remote turn. - The K2 during a turn reattached to the live remote runner (`reattach_remote_runner`, generation 2), as designed. - Task t01 failed R6 with an orphan Daytona sandbox that no lease references. The graceful restart came during sandbox creation. This is a separate signature, outside this change. - The timed faults did not land in the exact "session opened, no turn" window. The integration tests cover that window with the evidence from the saved replay database. ## Risks - The proof relies on two facts: only the controller issues turn commands, and the controller writes each command before sending it (`#sendJson` waits for the checkpoint flush). A turn always leaves a `turn.start` command in the record. - The provider session opened in the old sandbox runner is not resumed. The new bootstrap opens a fresh session. No turn ran in the old one, so no work is lost. - The runner stop sends signals inside the run's own sandbox. It signals only after the existing reattachment identity and process checks pass. ## Model Used - Claude Opus 5.5 (`claude-opus-5-5`), Anthropic, via Claude Code with tool use (shell, file edits, GitHub CLI) and extended reasoning. ## 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 - [ ] 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 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>