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## Thinking Path - Paperclip preserves accepted agent results before workspace copyback and result commitment. - A replaced controller can leave a physical copyback owner receipt behind. A lost database lock or expired lease cannot prove that its tar/Git children stopped. - Infrastructure recovery should belong to the runtime and deployment harness; task users should not investigate processes or attest shutdown. - New receipts record the exact deployment. The harness independently verifies that deployment fully stopped and signs a short-lived proof bound to the stack, run, owner and deployment. - The existing guarded reconciler then finishes the same accepted result without a new agent turn. Legacy receipts retain the documented administrator API after independent platform verification. ## Linked Issues or Issue Description **What happened?** An accepted native result can remain at `workspace_finalizing` with an abandoned physical copyback owner. Repeated recovery sweeps could replace specific instructions with advice to start new agent work. The first version of this PR exposed a shutdown-evidence form in the task; that asks end users to resolve infrastructure details. **Expected behavior** Automatically verify and recover the exact stopped deployment, preserve the original accepted result and existing approval/monitor waits, and show only a quiet task status. Unknown or live workers must remain fenced. Older receipts without platform identity need independently verified operator assistance through the administrator API. **Steps to reproduce** 1. Persist an accepted native result and a copyback receipt from a prior controller. 2. Replace that deployment before workspace finalization commits. 3. Let the normal finalization reconciler revisit the saved result. 4. With a platform-bound receipt and a fully stopped deployment, recovery should finish automatically. With missing, live, unverifiable or changed ownership, it must not write files or create another provider turn. Related public work: #14402 introduced copyback ownership; #9687 handles dead-run finalize barriers; #15795 handles terminal stale-run cleanup. This change addresses an accepted result whose physical copyback owner prevents commitment. ## What Changed - Record Railway project, environment, service and deployment identity on new physical copyback owners. - Request read-only platform verification from the managed cloud harness. Require an Ed25519 stop receipt with a disjoint purpose, configured signing key, exact stack/run/owner/deployment binding and valid expiry. - Keep live, unknown, malformed, unavailable and legacy owners fenced. Compare the whole prior receipt during ownership takeover, under the existing dedicated advisory lock. - Persist platform proof and audit automatic takeover. Resume normal finalization of the same saved result, preserving task ownership, approved boundaries, monitors and pending confirmations. - Remove process metadata, shutdown evidence, confirmation checkboxes and infrastructure-repair forms from task views. Suppress the duplicate technical owner-recovery card. Show “Restoring saved work…” only from server-confirmed recovery or queued operator recovery; platform identity alone shows the operator-assistance fallback. Remove the status when recovery resolves. - Share current-task, current-running-execution, accepted-result, authoritative-reviewer and newer-execution checks between automatic and operator recovery. Validate after the provider lookup, atomically with the owner claim, and again before file publication; closed or superseded tasks cannot start copyback. - Keep the separately authorized exact-owner API for operator recovery of legacy receipts, with active-lock, live-controller, stale-result and newer-execution rejection. Generic dismissal cannot bypass the copyback fence. - Replace obsolete form stories with production-backed automatic, queued, legacy, completed and mobile examples; retain stable suite IDs. Update the operator runbook and scoped Storybook catalog. ## Verification - Red/green: new platform-proof tests failed before implementation; the database takeover regression failed against the original ownership guard; reduced-UI assertions failed against the original form. All pass after the changes. - Passed: 59 physical-owner/finalization database tests using isolated PostgreSQL, including real reconciler commitment from all three saved-result phases through both automatic and operator recovery. They preserve result identity, exact saved file bytes, pending approval and overdue monitor waits, and create no new run or wake request. Unknown evidence and changed ownership remain fenced. - Passed: 162 focused proof, cloud identity, recovery route, recovery-card and reduced-UI tests. - Passed: full workspace typecheck and build, final server/UI typechecks, token gates, and Storybook build. - Browser inspection: desktop task composition shows only the quiet status; completed example removes it and retains the approval-wait message. Mobile shows the existing bottom navigation with no horizontal overflow. These are fixture UI observations, not live provider acceptance. - A companion harness change implements the actual provider check, signed receipts, server-token authentication and bounded/coalesced provider reads. Its full typecheck and test suite passed: 3,240 passed, 92 skipped, zero failures. This application alone cannot enable platform verification. - The updated full application `pnpm test:run` was stopped after repeated local embedded-Postgres startup failures; it is not claimed green. The same affected recovery suites pass against isolated PostgreSQL. CI passed on final head `9ad5c3529e`: 54 successful checks, two intentional skips, and successful legacy Snyk status. Greptile is 5/5 with no unresolved findings. - Global Storybook catalog validation is green: 225 files, 2,224 stories. Its 17 catalog/index tests pass. Master was merged and the inherited index metadata was reconciled after source review. - Review correction red/green: two UI and two database assertions reproduced misleading progress / missing server recovery state; all pass after server-confirmed state was added. All 153 focused server tests and 68 UI tests pass on the final recovery code, including repeated-sweep idempotence. Full workspace typecheck/build, token gates and Storybook build also pass. - Safety regression red/green: stale-task copyback and publication tests failed against the previous guard. The final suite covers changes during proof lookup, closed/cancelled tasks, replaced execution/checkout, newer and queued legacy runs, reassignment and rejected/unbound results, plus the real reconciler selecting closed or superseded tasks. Files remain untouched and no workspace operation starts. - No staging mutations, deployment, live provider probes or live production recovery were performed. The three historical receipts lack deployment identity and still require independent operator proof. ## Risks Automatic takeover requires the companion harness release and configured runtime-identity keys. Deploying only this application leaves unavailable evidence fenced. Legacy receipts are not retrospectively assigned a deployment identity. An authorized operator can still make an incorrect attestation through the fallback API; its administrator gate and exact-owner safeguards remain. Provider history that is missing or deeper than the bounded lookup defers automatic recovery. Copyback can still fail under its existing retained-workspace policy. No migration, telemetry change or cloud provider credential delivery is required. The companion harness PR also has passing CI and a 5/5 review; neither branch is deployed. ## Model Used OpenAI Codex, GPT-6, with repository inspection, browser verification, tool use and code execution. The exact serving model ID and context-window size were not exposed in this session. ## 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 and contains no internal Paperclip ticket id or instance-derived details - [x] I have run the relevant 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 --------- Co-authored-by: Paperclip <noreply@paperclip.ing> Co-authored-by: Paperclip <paperclip@paperclip.ing> Co-authored-by: Devin Foley <devin@paperclip.ing>