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## Thinking Path > - Paperclip manages agents and their task workspaces. > - Online migration saves files before it publishes remote workspace authority. > - A saved migration journal can survive the importing process. > - Git cache expiration did not count that journal as a consumer. > - Expiration could remove a source and change its fingerprint while its import was incomplete. > - This PR protects unfinished imports and exposes a guarded internal service transition for an already affected cohort. > - New imports can preserve the current sources while all old recovery data stays retained. ## Linked Issues or Issue Description **What happened?** Git cache expiration could archive and remove a workspace after an import process ended but before its saved cohort finished. The saved source fingerprint then differed from the current archived workspace. Exact cohort resume correctly refused that changed source. Reopening the workspace cannot recreate the old metadata or fingerprint. **Expected behavior** An unfinished migration remains a durable consumer after process loss. If an older server already expired some sources, one canonical transition can fail the exact unpublished cohort without losing its snapshots, objects, source history, or recovery obligations. New attempts use the current verified sources. **Steps to reproduce** 1. Start a cohort import of eight Git worktrees with local changes. 2. Interrupt it after four snapshot uploads. 3. Let an older server expire two idle source worktrees. 4. Resume the saved cohort. It refuses the changed archived sources. Related: #20429 preserves exact cohort identity when independent companion imports change only the scope proof. #20424 preserves prepared recovery state for archived sources. This PR handles completed source expiration, not a scope-only change. Public searches found related expiration work and no matching compensation owner. ## What Changed - Count saved migration markers and unfinished migration journals as Git expiration consumers. Keep failed migration retention holds as consumers too. - Expose `supersedeExpiredRemoteWorkspaceMigrationCohort` as an internal service API for a privileged operator with a real database handle and reviewed company/cohort inputs. It is called directly by the PostgreSQL/Git test and reviewed one-time administrative qualification. It adds no CLI mode or HTTP route. The existing CLI still refuses a damaged cohort; this PR does not claim automatic CLI recovery. - Require an exact unpublished cohort of up to eight members. It requires completed expiration and an unexpired restore recipe for each missing member. The other members must retain their saved source fingerprints. - Recheck current source and recovery state under source, lifecycle, finalizer, and row locks. One transaction fails all old journals, writes audit records, and removes only their exact matched active markers. - Keep old cohort proofs, operations, snapshots, and object references. Genuine failure receipts use the existing failed-save retention hold. This transition does not report migration success. - Reuse the existing bounded source-lock queue when `sourceLockWaitMs` is set. Keep fast refusal by default. Cancellation targets only this waiter, and current checks still run after admission. - Record predecessor IDs on new attempts and reserve a snapshot generation above the existing ledger maximum. New success does not retire the old hold. - Document the owning transition and retention rules. ## Verification - The two new journal-consumer cases failed under the old expiration predicate and passed under the new predicate. - The full new recovery case passed in 21.12 seconds with real PostgreSQL locks, Git repositories, encrypted local object storage, and archive restores. It covers four retained uploads, two real expirations, unchanged old resume refusal, authority change refusal, transaction rollback, a held native finalizer, idempotence, eight new imports, dirty/untracked file restores, and a retention pass 30 days later with no object deletion. - Server TypeScript and module-boundary checks passed. - On `7cec8c915acfad2d08874eaf26abaa852f560219`, the queued-admission regression failed before forwarding the option (24.07 seconds), then passed (22.25 seconds). It verifies a real held project lock, cancellation that preserves the holder and all journals, release into full compensation, retention, and eight restored fresh imports. Current server TypeScript and module/diff checks passed. The only production follow-up changes are the optional queue input and its existing-owner call. - The earlier `737a0df3a71b10fe48d7bbfe7ffd8ae296b4852c` CI run had one Runner support failure: the unchanged credential-free Python/Pi calibration exceeded its outer 25-second subprocess deadline. That job passed 6,926 other tests and skipped four. The timeout is retained as a nonpass. The changed logical head requires fresh CI and review; no test deadline was raised. - The affected cohort, Git expiration, and eligibility suites passed all 148 cases in 228.41 seconds on `aa589f3f447e36d0277c32f8b44cbe5e84a673be`. Merged current master `a9d0946e64`; the only conflict retained both independent added test blocks. The complete merged cohort suite passed all 30 cases in 70.00 seconds on `737a0df3a71b10fe48d7bbfe7ffd8ae296b4852c`, including upstream larger-cohort controls. Final-head server TypeScript, incremental preflight, module-boundary, and diff checks passed. Unchanged expiration/eligibility evidence remains valid. Fresh `809ab704e619812d8f1bf38cf5de9c65893861cc` CI and review are pending. - On `809ab704e619812d8f1bf38cf5de9c65893861cc`, the complete recovery fixture passed in 21.38 seconds after adding one valid archived recipe with no restore point. It refuses with `migration_supersession_expiration_unverified` and keeps all workspaces, journals, and snapshots unchanged. The same case then verifies queue cancellation/release, full compensation, retained history, fresh imports, and restored bytes. Server TypeScript passed. This follow-up changes only the test and service-scope documentation; product bytes remain identical to qualified `7cec8c915acfad2d08874eaf26abaa852f560219`. - Earlier fixture attempts did not pass. They exposed the selection of a held source and an incorrect expected refusal string. The fixture now selects eligible sources and asserts the canonical authority refusal. Production guards were not relaxed. - Live qualification of the exact owning product bytes completed in 230.419 seconds. All eight old operations became failed with auditable supersession lineage. All eight old snapshot rows remained byte-for-byte identical, and their object references remain retained. The existing source-lock queue waited 1.151 seconds for a normal finalizer handoff. The three complete source/recovery passes took about 218 seconds including their transaction, which explains why the earlier 180-second total budget was insufficient for that measured workload. No source proof or publication guard was skipped. Compensation made no provider or object-storage calls. - Earlier live qualifications remain nonpasses: the 180-second attempt did not finish; its instrumented successor completed source checks and refused a busy source lock before mutation. The successful bounded-queue attempt retained those failure records. Fresh archived/online imports are a separate subsequent step and are not claimed complete here. - The local checks do not claim browser acceptance, app deployment, fleet enrollment, or a completed zero-downtime cutover. ## Risks - This owner mutates migration bookkeeping. It preserves all-or-nothing row comparisons and current source/recovery locks. A changed journal, authority, writer, finalizer, expired recipe, or partial transaction refuses the transition. - Historical snapshots and objects remain pinned after new success. This intentionally retains storage. Release requires a separate reviewed action. - An older importer cannot use the successor generation contract. Use the containing canonical owner for recovery. Normal app delivery must also carry the expiration guard; a private maintenance graph does not patch a running server's cleanup worker. - The migration owner crosses 1,000 lines. The bounded compensation transition remains beside its private source inspection, fingerprint, fence, reservation, and publication contracts. Moving it now would require exporting or duplicating those safety owners. No unrelated refactor or new framework is included. ## Model Used OpenAI GPT-6 through Codex, with reasoning, source editing, Git, and local execution tools. The exact serving model ID and context-window size are 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 (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 --------- Co-authored-by: Paperclip <noreply@paperclip.ing>