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DottaandClaude Opus 5.5
a0cba70f18
## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - Native runs keep their provider conversation when the control plane restarts > - A local Codex turn lost in a restart already continues once in the same conversation (#15297) > - ACPX (Claude and the other ACPX profiles) and OpenCode took a different path: the runner closed the lost turn as a provider failure > - The task then blocked with "Provider turn failed", and the user's queued follow-up stayed unread > - A restart must not need a user action when continuing is safe > - This pull request gives ACPX and OpenCode the same recoverable restart-loss cause and the same single continuation as Codex > - The benefit is that work interrupted by a controller restart finishes on its own ## Linked Issues or Issue Description Refs #15297 (Codex continuation), #19399 (restart-interrupted turn hook), #19471 (harness fix used for the live reruns). **What happened?** After a control-plane restart during an active native ACPX Claude turn, the task ended `blocked` with `native_provider_terminal_failed: Provider turn failed`. The queued follow-up comment was not consumed. No continuation started. The next run then failed with `native_session_cleanup_quarantined`. A native OpenCode run killed mid-turn ended the same way (`turn.failed` with `error: null`). **Expected behavior** When the old provider process is gone and the conversation can be restored, continue the task once in the same conversation. When that is not safe, record an honest restart cause instead of a generic provider failure. **Steps to reproduce** 1. Start a native ACPX Claude task on a local runner. 2. Submit a follow-up comment while the turn is active. 3. Restart the control plane while the turn is still running. 4. Run `pnpm test:e2e:runner -- --max-automatic-retries 0 --id everyday-workflows.runner-acpx-claude.local.recover-controller`. **Root cause** - `runner-core/src/acpx_provider_backend.rs` `restore_session_if_needed`: a saved `turn_active` state always closed the session. It recorded `turn.failed` with only a top-level `code: acpx_active_turn_recovery_closed` and no `error` object. It also emitted `run.terminal`. - The runnerd transport forwards only `error`, so the controller saw `error: null` and reported generic `provider_turn_failed`. - `runner-core/src/provider_backend.rs` gave the recoverable `provider_turn_lost_on_restore` cause only to `provider_label == "codex"`. OpenCode shares that backend. - `nativeRestartInterruptedTurnId` accepted only `codex_app_server`. The runtime continuation gate accepted only `provider.kind === "codex"`. - Two follow-on defects appeared once the continuation ran live: - The restored ACPX provider rejected the controller's result for the lost turn's open semantic call. That call never settled. - The restored provider's MCP request ids restart. The controller keys semantic calls by `hash(runId, callId)`. The continuation's first Paperclip tool call reused an earlier id, was treated as already answered, and hung. After the result was accepted, `runner_settlement_incomplete` failed the run. ## What Changed - ACPX runner: for an active turn lost to a runner restart, prove that the original provider lifetime lost its fence quorum. Then restore the same conversation and record `turn.failed` with `error: { code: "provider_turn_lost_on_restore", recoverable: true }`. Keep the run open for the controller's continuation. An accepted result, an unanswered runtime request, or an active goal keeps the old close behavior. So do an unproven lifetime fence and a failed restore. - ACPX runner fallback close: add a structured `error` (`acpx_active_turn_recovery_closed`, not recoverable, with an honest restart message), so the cause survives the transport. - ACPX runner: track open semantic calls durably. On restore, retire the lost turn's open calls. Acknowledge their controller results as `retired` and do not send them to the new provider. - ACPX sidecar: when the sidecar restores an existing session, prefix forwarded semantic `callId`s with a per-process namespace (`r<hex>:<id>`). Fresh sessions keep raw ids. - OpenCode runner: give OpenCode the same recoverable cause and open run as Codex (`restart_lost_turn_is_continuable`). Cursor Cloud stays excluded because its agent runs remotely. - Runner TS: `nativeRestartInterruptedTurnId` accepts `acpx_runtime` and `opencode_server`. The runtime continuation gate accepts `acpx` and `opencode`. All other Codex safety rules are unchanged: one continuation, admitted dead-runner restart only, no compaction, goal, semantic result, or pending runtime request. - Docs: `doc/execution-semantics.md` and `doc/run-log-events.md`. ## Verification Red, then green, at each layer: - Rust `tests/acpx_warm_attachment.rs` `restores_the_conversation_after_losing_an_active_turn_to_a_runner_restart`. Red: status `closed`. Then red on the lost call's result: "tool result does not match a pending provider call". Green after the fix. - Rust `tests/native_provider_backend.rs` `restart_lost_opencode_turn_records_a_recoverable_cause`, with the qualified OpenCode launch fixture. Red: `error` was `null`. Green after the fix. - Rust unit test `restart_lost_turns_continue_only_for_locally_restored_providers` (Codex, OpenCode yes; Cursor Cloud no). - TS `native-session-runtime.test.ts` "continues a restart-lost acpx_runtime / opencode_server turn once". Red: `NativeProviderTerminalFailure provider_turn_lost_on_restore`. Green: exactly one continuation, which does not resend the task. - TS `acpx-runtime-sidecar.test.ts`: a restored provider's call ids are namespaced and resolve. - Server `native-runner-restart-recovery.integration.test.ts`: a checkpointed `acpx_runtime` or `opencode_server` restart interruption is claimed as `resume_dead_runner`. Red without the driver gate. Green with it. - Two `native_provider_backend.rs` tests asserted the old close-on-restore result. They now assert the new contract. Their real invariant still holds: the delivered response is never replayed. Suites run locally on the final revision: - runner-core: `cargo test --no-fail-fast acpx`, `--test native_provider_backend` (38), `--test acpx_warm_attachment`, `--test codex_provider restart_lost` - runner TS: `native-session-runtime`, `runnerd-restart-continuation`, Codex driver recovery, contracts, and `acpx-runtime-sidecar` (all pass) - server: `native-runner-restart-recovery.integration.test.ts` (80 passed) - `pnpm --filter "@paperclipai/paperclip-runner..." build` (all generated-contract checks pass) Live runner E2E (local, real Claude via ACPX, macOS arm64): - `everyday-workflows.runner-acpx-claude.local.recover-controller`: PASS twice in a row on the final runner code. The restart crossed an active turn. The task finished `done`, the queued follow-up was consumed, the ZIP download was verified, and there were no failure codes. - `stock-harness.runner-acpx-claude.local.continuity-restart` regression: PASS. - Earlier failing reruns are kept as evidence of the follow-on defects: one harness `kill EPERM` while stopping the server (unrelated to this change), one hang on the colliding call id, and one `runner_settlement_incomplete`. ## Risks - A continuation can run more work in the restored conversation. Its prompt requires inspecting state before repeating an uncertain action, as for Codex. - The ACPX restore waits up to 5 s for the original provider lifetime fence before it falls back to the old close. - The ACPX provider state file gains two fields with defaults. Older saved states still load. A downgraded runner cannot read state that a newer runner wrote with these fields. - Restored ACPX sessions now forward prefixed call ids. Only fresh sessions keep raw ids. Live proof covers Claude. Codex-ACP, Pi, Cursor, Copilot, Grok, Kimi, and Antigravity share this path, but this PR proves them only by unit tests and code review. - OpenCode is covered by the runner fixture and gate tests. The live OpenCode restart-chaos cell was not rerun here. - `runner-core` `unconfirmed_suspension_state_becomes_recoverable_only_after_cleanup_and_suspend` is flaky when run in parallel. It also fails with the new path disabled, so it predates this change. ## Model Used - Anthropic Claude Opus 5.5 (`claude-opus-5-5`) in Claude Code, with tool use, code execution, 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 - [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>