Files
PaperClipAI/server
DottaandClaude Opus 5.5 37808f2a4e fix(accounting): close a local-Runner turn completed across a session restore as a lower bound (#20517)
## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work.
> - Native runs record usage receipts, and accounting settles a run's
charge once its final receipt is complete.
> - ACPX Claude reports provisional zero usage until a turn ends, then
one final report.
> - A restart can stop the provider after the agent's finish call and
before that final report. The restored Runner then resumes the session
and reports the same turn completed with no complete report.
> - The receipt stayed incomplete, so the accepted run waited for the
10-minute closure timeout and then settled as unpriced. Its spend was
missing from company totals in the meantime.
> - This pull request closes such a turn as a lower bound, the same way
a turn the Runner fails as lost on restore is already closed.
> - The benefit is that an accepted run settles right away with its
observed usage and an honest lower-bound label.

## Linked Issues or Issue Description

Refs #20484 (restart-chaos L1 contention follow-up).

**What happened?**

After #20484 fixed the database contention, restart-chaos L1 (`--seed
20386 --db-pressure 4`, codex and claude, K1) reached 4/4 tasks done.
Each task still failed the T-oracle `company_spend_settled` with
`pending_runs=1`. A replay on master with `--keep`
(`w-20261110T100747-s20386`) reproduced it, and I read the kept
database:

- The pending run (`71f71d10`, ACPX Claude) succeeded and had its result
accepted. Its usage had `accountingReceiptReady: false`, zero tokens,
`costStatus: unpriced`, and no cost event.
- Its only turn started before K1, and every usage report in it was
provisional (`runDeltaComplete: false`). K1 struck right after the
agent's `paperclip_finish` call (source seq 118), before the turn's
final report.
- On restart, recovery verified the local process stopped and resumed
the session (`session.resumed`, seq 119). The restored Runner then
reported the same turn `turn.completed` (seq 124) with no usage report.
- The other Claude run in that wave lost its turn as
`provider_turn_lost_on_restore`, ran a new turn live with full usage,
and settled at once.

**Expected behavior**

An accepted run whose open turn's final report was lost with the
provider process settles promptly. It records its observed usage as a
lower bound, like a turn lost on restore. A complete report that does
arrive after the restore is still used.

**Steps to reproduce**

`server/src/services/native-runtime/native-usage-accounting.test.ts >
closes a turn that completed across a session restore without its final
report, as a lower bound` uses the event sequence from the kept
database. It fails on master because the snapshot stays incomplete.

## What Changed

- `createNativeTurnAccounting` observes `session.resumed` and marks
every open turn as restored. A terminal event for a restored turn
without a complete report marks it lost. The snapshot then closes it as
a lower bound (`accountingUsageLost`), through the existing
lost-on-restore path. A new `turn.started` clears the mark.
- A lost terminal turn keeps its identity in the snapshot, so the
executor's terminal-turn match certifies the final checkpoint as
complete. This came from review.
- The native session executor includes `session.resumed` when it
rebuilds turn state from the run's event log after a controller restart.
- `doc/SPEC-implementation.md` documents the case next to the existing
lost-on-restore rule.

## Verification

- Red on master, green here: `native-usage-accounting.test.ts > closes a
turn that completed across a session restore without its final report,
as a lower bound`. It also checks that replaying the history twice gives
the same snapshot.
- Red on the first revision, green after the review fix:
`native-session-executor.test.ts > certifies a turn completed across a
session restore as a lower bound (history replay: false|true)`. It
drives the restored sequence through executor completion, both live and
from the event history.
- New guards that pass before and after:
- `keeps a restored turn's own final report when it arrives after the
restore`: a complete report after resume is used, not marked lost.
- `keeps an incomplete turn pending when the session resumed before it
started`.
- The existing `keeps an incomplete provider report pending instead of
trusting placeholder zeroes` still passes.
- Related suites pass: `native-usage-accounting`,
`native-usage-delivery.integration`, `closed-native-receipt-accounting`
(107 tests), and the usage, accounting and receipt cases in
`native-session-executor.test.ts` (151 tests). Server typecheck passes.
- Live, restart-chaos L1, seed 20386, `--db-pressure 4`, codex and
claude, K1, head `a6e521f06c`, clean worktree:
`w-20261110T104332-s20386` passed 4/4. R1–R6 and the T-oracle passed for
every task. `company_spend_settled` reported `pending_runs=0` (summary
85.30823 = cost events 85.30823), with zero serialization failures under
about 397k pressure updates. On master the same seed failed every task
on `company_spend_settled pending_runs=1` (`w-20261110T100747-s20386`,
among others).

## Risks

- A restored turn without a complete report now settles at its observed
usage, flagged as a lower bound, instead of after 10 minutes as "closure
timed out". In both cases the final report never arrived. The money
recorded is the same observed usage; only the timing and the provenance
label differ.
- Scope: local Runner only. The executor fallback-recorder path sees
`session.resumed`. The producer-owned delivery path for remote runners
(`native-usage-delivery.ts`, `isNativeUsageAccountingEvent`) still drops
it, so a remote ACPX/OpenCode turn restored mid-turn still waits for the
closure timeout. That is a follow-up.
- No schema or persisted-format change.

## Model Used

- Claude Opus 5.5 (Anthropic), model ID `claude-opus-5-5`, used through
Claude Code with shell, file-edit and code-execution tools.

## 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>
2026-11-10 04:46:29 -06:00
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