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DottaandPaperclip
f2c5e54dca
## Thinking Path > - Paperclip lets people manage AI agents and their tasks. > - A task keeps its instructions, progress, and files when its assigned agent changes. > - The replacement runner lost the interrupted run's context and could overwrite an existing draft. > - A saved message also stayed attached to the former agent and could reopen the task after the replacement finished. > - File tasks could report Done with only a local path that the user could not open. > - This pull request transfers handoff context and saved messages, and makes requested files accessible through the existing attachment contract. > - Users can change agents and collect completed work without repeating instructions or confirming bookkeeping. ## Linked Issues or Issue Description Refs #13338. Builds on merged #13354 for queue admission and #13353 for remote workspace retry. #10123 concerns restricted recovery-model escalation; this change instead covers ordinary native handoff and file completion. **What happened?** Codex wrote a draft before a user assigned the task to Claude. The replacement lacked continuation context and replaced the draft. A queued user message could later restart the former agent and reopen the completed task. Separately, a runner could finish a requested file but return only a machine-local path. Remote native runs had no bound file publication tool. **Expected behavior** The replacement reads and preserves existing work, receives saved messages once, and keeps each message's author. The former agent stays stopped. A requested file has a working attachment or accessible work product before Done. Text-only tasks do not require attachments. **Steps to reproduce** 1. Ask Codex to save three newsletter names and then wait. 2. Queue an instruction to keep those names and expand the draft. 3. Use Interrupt and assign to select Claude. 4. Verify the original names survive, the result has a working download, and only the source and replacement runs exist. 5. Ask either provider for a Markdown checklist and open the file from its completed response. ## What Changed - Carry the exact same-task interrupted run's summary, semantic receipts, and history into handoff context. Tell the replacement to inspect existing files before editing. - Adopt saved ordinary task comments into the successor's receipt under the task lock. Preserve authors and separate mention, chat, and interaction contracts. - Prevent a former-assignee comment wake from reopening a completed task or starting a stale execution. - Reject workspace-only, fabricated, and cross-task file completion references with actionable runner feedback. New file output also needs a matching current-run publication receipt and asset filename/size/hash, or an accessible work product registered by the current run. Prior output can remain context alongside a current file, or be verified and re-registered internally. Authorized chat attachment reuse retains its verified current-run clone receipt; older receipt shapes require an intact matching source. - Bind remote file reads to the active environment runner and reuse the existing attachment and work-product publication path. - Enforce workspace confinement, regular single-link files, stable identity, a 10 MiB limit, and exact size and SHA-256 checks. Rotate the native session fingerprint for the updated tool contract. - Contain rejected remote signals and protocol-failure cleanup, including logging failures. Preserve the original cleanup rejection for its owner; a rejected operation never supplies stop acknowledgement or cleanup proof. - Allow exactly one maximum-size base64 file through the native SSH command adapter, preserving a finite output cap. - Document handoff and accessible file completion rules. ## Verification - Each observed bug has a failing regression before its fix. Final post-rebase integration passed 732 tests across 13 files before the final receipt and signal guards; final affected results are below. - Publication provenance and compatibility: 8 provenance regressions and 2 compatibility regressions failed before their fixes; the final four affected suites pass 53 tests, including mixed old/new references and real authorized chat reuse. Controls cover old attachments and work products, filename/size/hash/origin mismatch, missing/wrong receipts, current-run publication, same-run durable proof, internally re-registering preserved bytes, and no-new-file follow-ups. - Remote signal rejection: the real Node subprocess previously exited 1 when the production launcher signalled a deleted sandbox. It now stays alive for both a failed signal and failed logging; all 349 executor tests pass. The failed signal still provides no termination proof. - Remote file reader and SSH command boundary: 33 tests passed, including real Linux descriptor reads and the actual SSH adapter subprocess output cap (network executable replaced by a deterministic fixture). Exact 10 MiB bytes pass, one byte beyond the encoded cap fails. - Live local Claude and Codex Stop journeys preserve the saved file, deliver queued instructions once, and reach Done with two total runs. The handoff journey preserves the original names and download with exactly two runs. Both local providers deliver exact checklist files without a completion confirmation. - Live combined Daytona verification passed: the original failed task's Retry reused its sandbox; a selected Git subfolder produced an exact downloadable file; warm and deliberately resumed Claude runs took about 33 seconds. Codex produced a 240-byte download in 33.1 seconds after 134 seconds of contention/backoff. Both cloud downloads retained exact bytes after the two owned sandboxes were deleted. - The sandbox-deletion retest identified a separate ignored promise in protocol-failure cleanup. Two real Node subprocess regressions failed under fatal unhandled-rejection policy before the fix; all 36 protocol, lifecycle, and integrity tests now pass. The original close promise still rejects to its owning runtime. The final live retest passed: a normal Claude Daytona task completed in 132.352 seconds, then its sandbox was deleted. Thirteen samples over 361 seconds confirmed the same controller stayed healthy, the task stayed Done with unchanged run IDs, and its attachment retained exact bytes. The post-deletion browser download passed with zero page errors; all five owned sandboxes are confirmed absent. - Full repository typecheck and build passed on final commit `de64d16f1`. Final-head Greptile is 5/5 with no unresolved threads. [Final-head CI](https://github.com/paperclipai/paperclip/actions/runs/34736623758) passed: 32 successful checks and two conditional skips. The earlier mixed-source full local test invocation was deliberately stopped before rebase, so no pristine green full local aggregate is claimed. Its known failures passed in later affected suites. ## Risks - Handoff may adopt only ordinary comments from its validated former owner. Other delivery contracts must remain independent. - File verification fails closed if a remote file changes during reading. The runner must retry publication or explain a blocker. - The updated session fingerprint starts a fresh provider process where needed to install the new tool contract. - No schema migration or historical status reconciliation is included. ## Model Used OpenAI `gpt-6-astra` through Codex, with reasoning, code execution, browser testing, and tool use. The context-window size is not exposed in this task. ## 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 --------- Co-authored-by: Paperclip <noreply@paperclip.ing>