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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - A native agent run can ask the board a question and park on that saved (governed) wait > - After the question is saved, the runner interrupts the provider and drains its usage and terminal for a bounded time > - The drain keeps only usage, the terminal and cancellation facts of the parked turn. It discards every other numbered provider event > - If the control plane restarts before the drain settles, recovery replays the saved journal. That replay required strictly contiguous `sourceSeq`, so the discarded events made a valid saved wait look like the wrong conversation > - This pull request accepts a gap after the saved trigger only when every event after the gap is a drain-retained fact of the same turn. Identity checks do not change > - The benefit is that the asking run settles its saved wait after a restart instead of recording a failure ## Linked Issues or Issue Description **What happened?** Restart-chaos wave `w-20261110T063253-s208`, tasks t02 (Codex Q1, PV2: provider terminal dropped) and t03 (Codex Q1, PV1: provider terminal held), each with K1 (`kill -9` of the control plane about 3-4 s after the fault). The question, the board answer and the final brief were all correct. But the asking run was recorded `failed: native_session_interrupted`, and the grader failed `T:asking_run_settled`. **Cause** The run log of the asking run shows `failureDetail.message: native_governed_wait_replay_mismatch`. It is thrown at `packages/paperclip-runner/src/native-session-runtime.ts:2344` (master). The persisted runner events of the asking run have `sourceSeq` 33..40 and then 43 (t02), and 41, 42 and then 45 (t03). The two missing numbers are events that the accounting drain (`consumeTurn` → `settleDurableResult`, around line 1206 on master) read and discarded, because they are not usage, a terminal or a cancellation fact. Runs without a restart have the same gap (for example `w-20261110T032350-s201/t01`: 34, then 37). Those runs settle without replay, so the gap was not seen before. With a held or dropped terminal and a kill before the shutdown settlement receipt, recovery must replay. Its strict contiguity check then fails on a gap that the runner made itself. **Expected behavior** The question was saved before the provider was interrupted. Recovery must settle that same saved wait, as #20336 does after verified shutdown. Recovery must not start a new model turn. **Related** Refs #20336 (settle saved handoffs after verified shutdown). Not related in cause or code: #20477, #20482, #20483. ## What Changed - `isGovernedDrainRetainedEvent` (new, in `native-session-runtime.ts`) names the facts that the governed-wait drain persists: usage, the turn terminal, the interrupt acknowledgement, cancelled or expired runtime requests, and a failed or cancelled `run.terminal`, all for the parked turn. The drain now uses it in place of the same inline condition. Drain behavior does not change. - Governed-wait recovery replay accepts a `sourceSeq` gap only when: - the trigger is the first replayed event (a gap before it still fails), - sequence numbers strictly increase, - every event after the first gap is a drain-retained fact of the trigger's turn. - The run, normalized session and source instance identity checks do not change. Any mismatch still fails with `native_governed_wait_replay_mismatch`. - `doc/execution-semantics.md`: the governed-wait text said that shutdown keeps a contiguous journal. It now describes the gaps and the replay rule. Note for the sibling Claude/ACPX `turn.cancel` work: this change touches `settleDurableResult` only in the drain filter line (same condition, shared helper). It does not change cancel, the drain timeout or `settleCancelledTurn`. ## Verification - Red/green: `packages/paperclip-runner/src/native-session-runtime.test.ts` - `settles a saved governed wait whose drain left sequence gaps before a restart (terminal-after-restart)` - `settles a saved governed wait whose drain left sequence gaps before a restart (late-terminal-saved)` The first run uses the real drain. It discards two numbered events, so the history is trigger, acknowledgement, then usage with a gap. The stream then ends without a terminal, as with PV1/PV2 plus K1. On master, recovery rejects with `native_governed_wait_replay_mismatch` (the live error). With this change, recovery settles the saved wait as yielded. It does not call `resolveGovernedWait` again. It starts no second turn. The terminal is appended once. When the terminal arrived late and is already saved, recovery does not cancel the provider again. A further recovery of the settled checkpoint does not submit or settle again. - Fail closed: `keeps rejecting an unproven governed-wait replay with a sequence gap: …` covers a gap before the trigger, a foreign run, a foreign session, a foreign source instance, usage of another turn, a non-accounting event after a gap, and an accounting event followed by a non-accounting event. - `cd packages/paperclip-runner && npx vitest run src/native-session-runtime.test.ts`: 261 passed. `npx tsc --noEmit -p .`: clean. - `cd server && npx vitest run src/services/native-runtime/native-session-executor.test.ts -t governed`: 12 passed. - `pnpm verify` returned exit 2 (test file outside resolved graphs). Required CI supplies the broad coverage. - Live restart-chaos wave: see the comment below with the wave id and result. ## Risks - Low. The rule loosens only the sequence check, and only after the saved trigger, and only for facts that the drain itself retains and that carry no work authority. Identity checks stay strict. A non-accounting event after a gap still fails closed. - No change to the normal start path or turn startup (fast-turn rule). - No schema, protocol or env change. The pack `contractDigest` and provider `commandDigest` do not change. No Daytona image rebuild is necessary. ## Model Used - Anthropic Claude, model ID `claude-opus-5-5`, used through Claude Code with tool use (shell, file edits, test runs). ## 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 <noreply@anthropic.com>