## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Native agents keep remote processes and conversation history across warm turns. > - A completed turn can leave handoff authority only in controller memory. > - Losing that controller can block a follow-up even while its sandbox survives. > - This pull request verifies durable ownership and reconnects the exact prior process before handing it to the next run. > - Healthy follow-ups stay warm. Recovery preserves saved work without replaying a completed turn. ## Linked Issues or Issue Description **What happened?** A remote warm turn can finish without suspended backup authority. A replacement controller rejects that prior owner even when its exact process and completed checkpoint remain. A single unavailable identity probe can also stop an otherwise valid reattachment. **Expected behavior** Keep healthy follow-ups warm. Recover a completed session after proving that its controller stopped and that the successor holds current authority. Reuse compatible processes; otherwise save and resume the conversation. Retry unavailable identity reads within one shared deadline. **Steps to reproduce** Use `doc/testing-native-remote-continuity.md`. Its Linux cases execute real turns through PostgreSQL, TLS ingress, and the Rust runner. They kill a separate controller process, recover old checkpoint metadata, and change process configuration. The provider is deterministic. Related: #16432 and #16441 fix live warm-owner handoffs. #16341 adds recovery diagnostics. #14695 covers provider process retention. ## What Changed - Preserve warm process reuse between healthy remote turns. - Verify a committed prior result, stopped controller, matching checkpoint and sandbox, and current task/coordinator ownership before recovering an orphaned warm session. - Reconnect through the prior run route, then use the existing authenticated run attachment to change authority. - Persist a process-configuration digest. Close and save recovered sessions when old or changed configuration cannot support reuse. - Retry unavailable state, marker, and process reads within one 30-second deadline. Keep signals and definitive identity failures single-attempt. - Record closed recovery diagnostics, including unreadable or malformed saved state. - Retire the recovery-only ownership check after verified attachment, so later warm turns use their current authority. - Add real-process Linux regressions and refusal controls. - Expose the existing source-only file-recovery form for retained native holds, with the same board authority, evidence, and exact stop-receipt requirements as legacy holds. Recording recovered files does not change task status or replay a run. ## Verification - `pnpm -r typecheck` passed; the server check was repeated for the third-turn fix. - `pnpm build` passed after the final UI change. The UI typecheck, token gates, and map checks also pass. - Four Linux continuity cases passed: warm reuse, controller loss, legacy checkpoint metadata, and changed configuration. Each creates one conversation and starts exactly three turns, including a healthy follow-up after recovery. The fixture uses expired prior leases; the third turn keeps the runner and provider processes. - Greptile caught the retained recovery gate; the third-turn regression now covers it. An initial test omitted the heartbeat’s saved input and left a test process after failure; the fixture was corrected and its disposable container reset before the passing run. - The current focused executor/restart group passes all 749 tests, including the original failure classifications. - Native file-recovery and UI tests pass (52 tests), including blocked tasks and both native and legacy holds. - After merging current master and retaining its equivalent CI expression check, the CI policy tests pass (15 tests) and all four three-turn Linux continuity cases pass again on `dec418ae55ff21b4fb067132613658cce445f181`. - `pnpm test:run` completed its general server group with 20,572 passes, 103 skips, and three failures: the skill-audit child process and two HTTP test timeouts. The same three suites then passed in isolation (89 tests) without code changes. That local command stopped before later groups; the complete final-head CI, including general, serialized, Runner, build, and browser gates, is green. - Greptile reviewed the combined head `dec418ae55ff21b4fb067132613658cce445f181` at 5/5 with no actionable findings; both earlier findings are resolved. All final-head CI gates and the security scan passed. Staging deployment and retained-incident disposition remain deployment acceptance work. ## Risks - Recovery requires exact durable evidence. Live conflicting controllers, replacement sandboxes, Stop/pause, and uncertain effects must remain blocked. - After controller loss, tool-contract or process-configuration changes can restart the provider. Normal healthy follow-ups retain their processes. - The new idle-recovery path has Linux fake-provider evidence. Live Codex/OpenCode and retained quarantined-state recovery still need staging qualification. - No database schema, telemetry, or runner protocol changes. ## Model Used OpenAI GPT-6 through Codex, with reasoning, repository inspection, code execution, and browser tools. The session does not expose a more specific model version or context-window size. ## 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 (targeted checks and isolated reruns; full-run limitation recorded above) - [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 on `dec418ae55ff21b4fb067132613658cce445f181` - [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 --------- Co-authored-by: Paperclip <noreply@paperclip.ing>
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Recovery
People can see why a task stopped, who owns the next action, and whether a safe continuation is available. Recovery retains task context and ownership, honors pause and budget gates, and distinguishes confirmed failure from an uncertain external outcome. A retry acknowledgement alone is not proof that work resumed.
Agent access: companion.
Sub-features
diagnosis: a task/run exposes the recorded cause, evidence, owner, attempt progress, and next action without requiring a raw-log interpretation.bounded-continuation: supported interrupted work continues with preserved conversation context and bounded attempts, without blindly replaying tools.source-action: source-scoped recovery actions remain attached to the task; independent repair work may have its own issue and return owner.exhaustion: exhausted or overdue recovery exposes the current gate and permitted operator action; it does not claim an automatic path is still live.workspace: workspace divergence/export failures show the applicable repair, reconcile, or isolated reissue action with evidence and authority checks.unknown-outcome: uncertain external side effects require inspection and an explicit decision, not automatic replay.user-continuation: saved user messages after a stop are reconsidered once cleanup proves the old execution is stopped; duplicate wakes are avoided.reconnect: browser stream recovery refreshes persisted state without claiming the agent itself restarted or that a failed run succeeded.
How to get to it (user POV)
source-task
Open the affected task from Tasks, Inbox/Blocked, search, or a direct task link. Inspect the recovery notice/card in its history, expand details if needed, and use the currently offered action. Follow any linked repair task and return owner.
An authorized board user can expand Recovery details on a stopped-run notice to read the decision that still blocks replay, including a settled recovery record. The notice matches the current action and run; it does not show another run's historical decision or authorize a retry. Source-reviewed behavior; the notice regressions cover empty active recovery, a mismatched source, and failed history reads.
run-detail
Open the agent's run (/agents/:agentId/runs/:runId) from activity or the task's
run link. The run page hosts workspace recovery controls only for a failed run
with error code workspace_validation_failed and a linked source task that still
has a live workspace_validation recovery action. Use the source task for other
stopped-run recovery checks.
operator-retry
On an exhausted disposition or workspace recovery card, inspect the current reason and use the permitted retry/repair/reconcile action. Some repairs require confirmation; unavailable actions must explain the gate or remain absent.
post-stop-message
After a stop, send a new instruction on the same task or inspect one already saved while cleanup was pending. Observe the waiting message, continuation, and eventual result rather than manually changing the task status to look complete.
browser-reconnect
While viewing an active or recovering task, interrupt the browser connection and restore it, or suspend and return to the tab. Reload is a separate check. The current task and run state should reconcile with the server.
Driving it
Preconditions: follow the baseline. Use a disposable instance and reproducible failure. Record source task/run, adapter/runtime mode, cause, attempt count, current owner, and verified stop evidence. Do not kill an unrelated server or induce provider side effects just to get a failure screen. Use the existing deterministic recovery suite first.
source-task
Automated: recovery actions covers source scoping, bounded attempts, operator stops, quota monitoring, ownership, stale action retirement, and continuation deduplication. Recovery cards cover diagnosis, retry progress, exhaustion, and action availability. The fixture-backed execution-recovery journeys start their own test-drive instances and exercise safe, uncertain, restart, manager-lineage, and legacy-unknown paths:
pnpm exec vitest run server/src/__tests__/issue-recovery-actions.test.ts ui/src/components/IssueRecoveryActionCard.test.tsx
pnpm exec playwright test -c tests/e2e/execution-recovery/playwright.config.ts recovery.spec.ts
Manual: open a stopped task through each affected navigation path. Confirm its explanation, original owner, recovery owner if different, and next action. Follow the supported recovery until the source task produces a useful result or a specific escalation. Reload and verify that resolved notices retire and attempt history remains. A fixture pass does not qualify every live harness/provider.
The native restart integration suite also covers a prepared remote workspace interrupted before the executor's first claim. Real database tests assert one same-run bootstrap claim under concurrent controllers and reject prior claims, launch/provider evidence, and malformed workspace references. These cases prove classification, not a live remote provider restart. For that journey, interrupt a disposable deployment after workspace preparation and before its first executor claim, then confirm one provider turn starts on the original run through the normal admission gates.
The same database suite pauses an original preparation while recovery claims the remote run. It then verifies that the old preparation yields without opening a provider or changing the recovery owner, for both live and expired leases. Heartbeat boundary tests verify that the detachment signal transfers recovery ownership before cleanup. The suite also rejects an older unmarked preparation and verifies that calling preparation again cannot add the fencing marker from supplied profile data.
For a native workspace owner hold, repeat issue reads and recovery checks after the task becomes done or cancelled. Verify one unchanged action ID, attempt count, and timestamps; task completion must not authorize copyback. Clear only the exact receipt after operator stop verification, then confirm stale action cleanup. The route regressions and heartbeat regression cover this sequence without a live operator recovery claim.
An intentionally Done onboarding parent can still need its validated
child-completion report. Recovery must not mark that callback successful before
execution solely because the parent is Done. The existing
stale-lock sweep suite
covers delayed native/Legacy startup, invalid parent/child/company/assignee
bindings and a dead owner. Process-death and ownership backstops remain active.
Repeat the real onboarding journey and correlate callback turn events with its
reply and downloadable child file; status alone does not prove delivery. The
literal ea6c8eb5e16d61111968f633a66748b397b64a3e live failure is retained,
and the revised behavior still needs live qualification.
run-detail
Automated: run workspace recovery tests this host; it is component coverage, not an end-to-end repair.
Manual: prepare a failed run with error code workspace_validation_failed, a
linked source task, and a live workspace_validation recovery action on that
task. Open that exact run and compare its recovery diagnosis to the source task.
Use an eligible action from the run surface, return to the task,
and verify the same action state, persisted outcome, and restored execution.
Repeat with an actor who lacks authority. Verify that the run-page controls are
absent for other error codes or after the source action retires; continue other
recovery checks on the source task. Full run-detail navigation remains a manual
gap.
operator-retry
Automated: disposition notices tests pending/error/gated states and waiting for the real retry acknowledgement. The recovery-card suite covers workspace divergence, reissue, reconcile, and confirmation. Workspace export covers quiet restoration, legacy/operator assistance and resolved states.
For a retained legacy or native file hold, open the source task after its recovery action has resolved but its files still need recovery. An authorized board operator can record the verified recovered files and backup link without changing the current task status or starting another run. The server must independently validate the original stopped-execution receipt. Agent Chat must show the file hold rather than suggesting another message. The file recovery form, notice, and repair route cover evidence/confirmation, read-only access, stale or missing stop proof, source-only repair, and preserved task status. These tests use fixtures; separately verify original files and their attached artifact before recording a real repair.
Repeat source-only repair with a succeeded legacy run that still has a retained
file obligation. Its result must remain successful, its current task owner and
status must stay unchanged, and later saved input must become eligible for normal
admission. A running or queued source and a normal retry of a successful turn
remain denied. The reconciliation regressions
cover these cases and stop-receipt validation without claiming live provider proof.
For an abandoned native copyback owner, the harness verifies the exact stopped
deployment and the reconciler restores saved work automatically. Task users see
no process details or shutdown form. The documented operator API handles older
receipts after independent platform verification, through a separate administrator
gate. The authorization regressions
and route regressions
cover administrator admission, ordinary-member and agent denial, suspended and
foreign membership, missing role data, and stale cloud admin rows.
The native workspace finalizer suite
runs the real reconciler with a valid saved yield from result_accepted,
workspace_finalizing, and retryable_failure. It verifies physical fencing
before verified stop, automatic and operator recovery, successful export and commitment, hold resolution,
unchanged saved results, retained approval/monitor waits, and no new provider wake.
These local regressions do not prove a deployment platform stopped a foreign writer.
Manual: reproduce an exhausted disposable action. Click once, verify pending state prevents repeated clicks, and inspect a successful continuation or an explicit rejection. Reload to confirm the durable outcome. For a workspace repair, record the compared branches/revisions and preserve uncommitted work; confirm the repair's actual result before resuming. Check the denied and stale action paths. A changed card label is insufficient proof of workspace integrity.
For an abandoned native controller, follow the stop-verification procedure with a disposable deployment. A new platform-bound owner recovers automatically only after the harness signs proof that the exact deployment fully stopped. Legacy owners require independently verified stop evidence through the operator API; the task has no shutdown form. Confirm the original accepted result commits, the recovery hold resolves, saved files remain intact, and existing approval waits or monitor checks remain. No new agent turn should start. Repeat with a retry-phase owner and an ordinary runtime manager; the first can resume through automatic proof or authorized operator confirmation, while the second cannot use the operator API.
post-stop-message
Automated: legacy continuation, queue routes, and native restart recovery cover their respective recovery paths. Legacy failure continuation adds a browser journey; it is not native runtime proof.
Queued Stop database regressions verify that an operator cancellation before runtime selection releases its own locks, preserves deferred input without launching it, and leaves another active cycle of the same routine unchanged. Provider cancellations and already selected or dispatched runs retain their existing release behavior.
Manual: stop a disposable run, submit a distinguishable follow-up, and observe any cleanup wait. After confirmed stop, verify the follow-up reaches one eligible continuation and produces the requested answer. Repeat with a task/ancestor pause and a budget hold: recovery must not bypass the gate. For unknown external outcomes, inspect the provider before authorizing another operation.
browser-reconnect
Automated: live-update recovery covers client transport recovery with mocks. It does not prove runner restart.
Manual: go offline during a disposable run, let the server reach a new state, then reconnect. Confirm task/run/attention data refresh without duplicate comments or decisions; reload and compare. A healthy websocket proves transport only. Separately inspect the underlying execution if it is still stuck.
Gotchas
- Legacy and native runtimes have different ownership and restart paths. Record which one was exercised instead of inferring coverage from the adapter name.
- A process disappearance, elapsed timeout, or successful API retry does not prove an external tool operation never happened. Unknown outcomes stay unknown until corroborated; automatic replay can duplicate a side effect.
- Active-run watchdogs, task watchdogs, reviewers, and recovery owners have different authority. No recovery card grants board permission by itself.
- Idle Agent Chat is not stranded work. An intentional operator stop must not silently trigger recovery that fights the user's instruction.
- Source inspection and mocked component tests do not qualify real server restart continuity. Use the appropriate runtime suite for that claim.
- See execution semantics for the governing recovery contract and steering for saved follow-ups.
Storybook verification
exhaustion
Scope: ui Storybook: Exhausted/overdue attempts, operator retry pending/error, blocked authority/gate and specific escalation. Production: Inspect durable attempt bounds and actual eligible retry/repair; acknowledgment alone does not prove continued execution. Sources: Source: IssueRecoveryActionCard.tsx, DispositionRecoveryNotice.tsx, issue-recovery-actions.ts. Tests: IssueRecoveryActionCard.test.tsx, DispositionRecoveryNotice.test.tsx, issue-recovery-actions.test.ts, recovery.spec.ts
unknown-outcome
Scope: ui Storybook: Uncertain external outcome, required inspection/evidence and explicit permitted operator decision. Production: Corroborate provider outcome before authorization; enforce no automatic external side-effect replay and reject stale/unauthorized decisions. Sources: Source: IssueRecoveryActionCard.tsx, issue-recovery-actions.ts. Tests: IssueRecoveryActionCard.test.tsx, issue-recovery-actions.test.ts, recovery.spec.ts
user-continuation
Scope: ui Storybook: Saved follow-up waiting on stop cleanup, pause/budget gate, one eligible continuation and result/failure. Production: Confirm previous execution stopped before delivery, preserve message, avoid duplicate wakes and honor actual task/ancestor/budget gate in separate legacy/native paths. Sources: Source: TaskChatQueuedMessages.tsx, legacy-continuation.ts, native-restart-recovery.ts. Tests: legacy-continuation.test.ts, native-restart-recovery.test.ts, issue-queued-comments-routes.test.ts, legacy-failure-continuation.spec.ts