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DottaandClaude Opus 5.5
90b8190c33
## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Native runs in a managed sandbox talk to the server through a provider-ingress WebSocket. The server opens this socket to the runner (`paperclip-runnerd`) through the sandbox preview proxy. > - A staging run ran a 20-minute foreground shell command that printed nothing. After the first second, no run events arrived. The run stayed "Working" for over 35 minutes. No watchdog acted, and the run projection said `canStop: false`. > - The server only detected a lost runner connection from a `close` or `error` event. It never sent pings. A half-open route, for example a proxy that drops the connection without a FIN, never emits `close`. The run then waits forever and the 7-minute reconnect grace never starts. > - A long silent tool call is legitimate. The fix must tell "quiet but alive" apart from "nothing alive". A protocol ping does that: runnerd answers every ping with a pong while its provider waits on the tool. > - This pull request pings authenticated runner connections and terminates the socket after 90 seconds of total silence. The existing reconnect grace and transport-failure path then recover the run. It also makes the execution projection report `canStop: true` for every queued or running run. > - The benefit is that a run with a dead runner connection now ends in a bounded time instead of hanging. API readers also see the Stop that the board already offers. ## Linked Issues or Issue Description **What happened?** A native-runner run (managed sandbox, OpenCode with an OpenRouter model) ran a foreground shell command for about 20 minutes with no output. The last run event came at about T+1s. The command finished on disk, but the run never got another event and stayed `running` / "Working" for over 35 minutes. Its projection had `canStop: false` and `permittedActions: ["inspect_run"]`. A board cancel through the API worked. **Expected behavior** The server detects a dead runner connection and recovers or fails the run in a bounded time. A runner that is alive but quiet stays attached. The projection reports that a live run can be stopped. **Steps to reproduce** 1. Start a native run in a managed sandbox. 2. Make the agent run a long foreground command that prints nothing. 3. Let the preview route drop the WebSocket without a close frame. 4. Before this fix, the run stays "Working" forever. ## What Changed - `server/src/realtime/runner-prp-outbound.ts`: after PRP authentication, `WsJsonWireConnection.monitorLiveness` sends a WebSocket ping every 20 s. Any inbound frame or pong counts as liveness. After 90 s with nothing inbound, it terminates the socket. That emits an ordinary `close`, so the PRP authority and the reconnect loop use the existing 7-minute grace and then fail the transport. If the server's own event loop stalls, the window restarts instead of blaming the runner. The 90 s bound is longer than runnerd's own 60 s connection lease, which already requires runnerd to read the socket. - `server/src/services/execution-projection.ts`: `canStop` is now `true` for every `queued` or `running` run. The old failed-native-retry rule is unchanged. - `server/src/services/execution-projection.ts`: a queued run now shows "Waiting for previous run to stop" (cause `previous_run_settling`) when a predecessor that admission checks (the task execution owner, the retried run, or the agent's latest settled run on the task) still has pending cleanup by `hasPendingRunCleanup`. Before, a turn queued after a Stop showed only "Queued" with no reason while the stopped run's controller still waited on the dead runner. That in-process wait (`claimQueuedRun` settling-owner gate) also made Retry a no-op. The liveness bound above makes that controller settle. Its existing cleanup then calls `startNextQueuedRunForAgent`, which starts the queued turn. - `server/src/services/run-cancellation.ts` and `server/src/modules/run-dispatch/adapters/postgres.ts`: a user-stopped native run whose runner was unreachable can later settle as `failed` (`native_provider_terminal_failed`) when its transport fails closed. The dispatch gate's message deferral required a `cancelled` source and compared the message with `finishedAt`. The user's follow-up message was therefore marked `skipped`, and the task asked for a second message. The new `recordedUserStop` helper honors the recorded user Stop on such a failed source, so the gate saves the message for the deferred-receipt worker. - `packages/shared/src/types/execution-projection.ts`: documents the `canStop` meaning. - `doc/execution-semantics.md`: documents the ingress liveness bound and the new `canStop` meaning. ## Verification - Red then green: `runner-prp-outbound.test.ts` "detects a half-open authenticated ingress and fails the run within a bounded window". On the old code it failed because no ping was sent and the socket was never terminated. It now passes and the active-run `failure` rejects with `runner_ingress_unavailable`. - Safety: "keeps a quiet but live runner attached through a long silent tool call" checks that a runner answering pings stays attached for 20 simulated minutes with no termination and no failure. - Red then green: `execution-projection.test.ts` "offers Stop for every live run, including a long-silent native turn". On the old code it failed with `canStop: false`. - Red then green: `execution-projection-recovery.test.ts` "names the wait when a stopped predecessor still holds the task's runner" (real Postgres). On the old code the successor projected a plain "Queued". It also checks that the wait clears on lease release and ignores another agent's run. - Red then green: `workspace-recovery.test.ts` "continues a message sent after Stop when the stopped run later failed closed". On the old code it failed 3 of 3 runs with the receipt `skipped`. It now passes, and the full file passes twice (392 tests). The test now pins the message after the recorded Stop. Before, the fixture could write both in the same millisecond, which made the sibling variants flaky. - Passed: run-cancellation, explicit-native-continuation, run-dispatch and run-control suites (622 tests). - Passed: `npx vitest run src/realtime/ src/services/execution-projection*.test.ts src/__tests__/heartbeat-run-privacy-routes.test.ts`, the native-runner-execution-driver tests, and the plugin-runner-task tests. - Passed: `pnpm --filter @paperclipai/server typecheck`. - I read runnerd (`runner-core/src/durable/transport.rs`) and confirmed it answers `Ping` with `Pong` in its non-blocking read loop. - Not run: a live managed-sandbox reproduction. Staging and Daytona were not reachable from this environment. `plugin-runner-probe.test.ts` needs a local cargo build of runnerd, and it did not start in this worktree. ## Risks - A false termination is possible if a runner fails to answer pings for 90 s while it is still alive. runnerd already loses its own connection lease after 60 s without reading, so this bound does not add a stricter requirement. A terminated live runner reconnects within the existing grace. - If the preview proxy drops WebSocket control frames, ping alone does not prove liveness. Inbound PRP frames (runnerd's lease renewals, about every 30 s) still count, so a live runner stays attached. - `canStop` now means "the board can Stop now" for live runs. The UI already shows Stop for running and queued runs without reading this hint, so the UI does not change. - Out of scope: the inbound runner WebSocket server (`runner-prp-ws.ts`), and a lost OpenCode SSE event while the runner is alive. A stopped run whose controller hangs for a reason other than a dead transport still holds the queued successor. The projection now names that wait, but this PR does not force-release it, because the controller has no termination evidence. A queued reason for the agent concurrency cap is also not covered. The wait label calls the admission predicate (`hasPendingRunCleanup`) for up to three predecessor runs per queued run. This adds a few reads to projections of queued runs only. ## Model Used - Claude Opus 5.5 (`claude-opus-5-5`), Anthropic, with tool use (shell, file edits) in Claude Code. ## 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>