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DottaandClaude
52160eba35
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work.
> - The restart-chaos harness (`tests/restart-chaos/`) restarts the
control plane while real agent tasks run. It grades whether every task
finishes without a human Retry.
> - The hosted staging stack deploys about every 40 minutes. In 48
hours, 276 runs failed and 63 tasks stayed blocked. About a quarter of
the failures came within 10 minutes of a deploy. The harness passed the
same areas.
> - A hosted deploy replaces the server container. The new server runs
in another process space and has a new deployment id. The PID-based "the
earlier owner exited" proofs never apply across that boundary. A harness
restart on one machine keeps the process space, so every PID proof
succeeds and the hosted recovery path is never tested.
> - This pull request adds K15, a redeploy fault. It also adds the
staging census that shows the gap.
> - The benefit: chaos waves can now exercise the recovery path that
staging runs after every deploy, on local and Daytona.
## Linked Issues or Issue Description
**What happened?**
Many staging tasks that a deploy crossed ended blocked. Examples are
`native_remote_recovery_lease_mismatch`,
`runner_remote_process_identity_unavailable`,
`prior_owner_terminal_state_indeterminate` and `PRP provider resume
state is unavailable`. The restart-chaos Daytona waves passed for the
same adapters.
**What did you expect?**
The chaos harness should reproduce the deploy conditions that staging
has, so that these failure classes show up in a wave first.
**Steps to reproduce**
1. Compare the staging run records' `controllerProcess.hostHash` and
`deployment.deploymentId` across a deploy. Both change on every deploy.
2. Compare the same fields across a harness K2 restart. Both stay the
same.
3. Read `controllerProcessExited` and `sameProcessSpace` in
`server/src/services/controller-process-identity.ts`. A different
`hostHash` means that no PID proof applies.
**Additional context**
The full census, the failure classes and the per-class harness gaps are
in `doc/plans/2026-11-11-staging-failures-vs-chaos-coverage.md`. The
task identifiers in it are neutral labels.
## What Changed
- New fault `K15` (redeploy), in `tests/restart-chaos/redeploy.ts` and
`redeploy-preload.mjs`. A K15 wave gives every server an emulated host
name through a `--import` preload, which changes the process-space hash.
It also gives Railway-shaped deployment variables with the instance home
as the exclusive volume. A K15 stops the server with SIGTERM and starts
the next generation, with a new host name and deployment id.
- `supervisor.ts`, `main.ts`, `config.ts` and `types.ts`: select K15
with `--faults K15`. It works on `--env local` and `--env daytona`. The
receipt records `redeploy` and the timeline records `redeploy_switched`.
Config refuses K15 together with MS1–MS3.
- New opt-in workload `F1` (`workloads.ts`): the agent keeps an absolute
symlink in its repository workspace. A staging save-back refused such a
link and blocked the task. The oracle needs `done` and the saved notes
file, with no Retry. `f1-symlink.test.ts` covers the prompt, the grading
and the option planning.
- `redeploy.test.ts`: identity derivation, the environment, the argument
order, a real child process that proves the preload changes both CJS and
ESM `hostname()`, option parsing and plan detection.
- `tests/restart-chaos/README.md`: a K15 section and a row in the
"Pieces" table.
- `doc/plans/2026-11-11-staging-failures-vs-chaos-coverage.md`: the
48-hour staging census, 12 failure classes, the deploy timeline, the
reason the harness missed each class, and proposed scenarios.
## Verification
- `pnpm exec vitest run --config tests/restart-chaos/vitest.config.ts
tests/restart-chaos/redeploy.test.ts
tests/restart-chaos/scheduler.test.ts
tests/restart-chaos/repeated-restarts.test.ts`: 68 tests pass. The full
restart-chaos unit suite passes: 43 files, 516 tests.
- `node scripts/typecheck-test-projects.mjs tests/restart-chaos`:
passes.
- Live Daytona waves on 8f6ca25976, image
`paperclip-daytona-runner@sha256:bc7ca92d…`:
| Wave | Faults and cells | Result |
| --- | --- | --- |
| `w-20261111T002313-s9301` | K15, opencode and claude, A1 and C1, reuse
lease, 6 tasks | 5 of 6 pass. t05 (OpenCode, C1) failed R5
`silent_dead_run`: 183 s without evidence after the redeploy, then
succeeded. |
| `w-20261111T004241-s9301` | K2 control, same seed | 6 of 6 pass |
| `w-20261111T005008-s9302` | K15, warm sandbox, comment trigger, 4
tasks | 4 of 4 pass |
| `w-20261111T010000-s9303` | K15, opencode only, 8 tasks | 8 of 8 pass
|
| `w-20261111T011044-s9303` | K2 control, same seed | 8 of 8 pass |
| `w-20261111T012523-s9304` | F1 with K2, codex and opencode, `--storage
s3` | 2 of 2 pass |
- Every K15 fault switched the generation, with a new host name and
deployment id on the same volume. The server was ready again in 14–24 s.
- K15 does not yet reproduce the staging refusal codes on current
master. The census document explains the open conditions, such as a code
change at the deploy.
## Risks
- Low risk. The change is in the test harness and docs only. No product
code changes.
- K15 is an emulation. It changes the host name only in the server
process (and forked Node children). It does not emulate a new kernel
boot or PID namespace. The cloud stop-proof service is not emulated, so
stop proofs that need it stay unsupported, as on a self-hosted Railway
deploy. The README lists these limits.
## Model Used
- Claude Opus 5.5 (`claude-opus-5-5`), Anthropic, in Claude Code with
tool use (shell, file edit, GitHub CLI).
## 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>