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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - When a native run on a remote sandbox fails mid-turn with unsaved files, Paperclip pins an observed-workspace preservation fence. The sandbox is stopped and retained, never deleted, and the run is settled only after the provider confirms the stop > - The fence is held by the run's expired coordinator lease. Its release proof is the provider's stop receipt, and only the environment-settlement worker acted on it > - The ownership reconciler could not see these fences at all: they sit on the preserved-workspace recovery action, which is resolved (no replay) while the fence still waits > - The durable ownership plan has every in-progress record visible to the one reconciler, and settled from it once its owner is proven gone > - This pull request makes the fence visible, proves it by the provider stop, and settles it through the same function the worker already uses > - The benefit is that a fence whose sandbox stopped can no longer sit unseen, and expiry alone never releases one ## Linked Issues or Issue Description Refs #19831 (plan, Phase 2 sections A and C), #19838 (inventory: "Observed-run workspace preservation fence"). **What happened?** `recoveryActionKind` lists only unresolved recovery actions, so `observed_workspace_preservation_fence` reported nothing: its fence lives on a resolved action. The kind registered no settle, and its fence owner never carried the provider proof. **Expected behavior** Every `stop_pending` fence is listed. The fence is `gone` (`provider_stopped`) once its run's one remote lease has a termination receipt and a confirmed stop-and-retain. The reconciler then settles it with `settleStoppedObservedWorkspace`, which re-checks every fence field under its own locks. An expired coordinator lease without that receipt is `unprovable` and is never released. ## What Changed - `recovery/ownership-registry.ts`: - `recoveryActionKind` takes `includeResolved`, which only the observed fence uses. - `resolveFenceHolders` adds `provider: "stopped"` for observed fences whose run lease carries the stop proof. - The kind registers a settle that calls `settleStoppedObservedWorkspace`. A source-busy lock conflict is kept for a later pass. - `native-observed-workspace-preservation.ts`: pinning a fence wakes the ownership worker in the same transaction. - The settling-kinds list in `ownership-reconciliation-report.test.ts` is updated. ## Verification - `heartbeat-observed-workspace-preservation.test.ts`: 29 pass. The new test "settles the fence from the shared reconciler once the provider stop is proven, never before" fails on `master` and passes here: - a pinned fence with an expired lease is `fence_expired_without_provider_proof` and is not settled; - after the provider stop, a read-only pass sees `provider_stopped` and changes nothing; - the settle moves the fence to `stopped` and the coordinator to `terminal_failure`, and the saved files are untouched. All 15 existing "keeps unsafe observed source held" cases and the stale-evidence cases still pass. - `ownership-reconciliation-report.test.ts` (25) passes. - The server package typecheck passes. ## Risks - The kind's listing now includes resolved recovery actions that carry a `stop_pending` fence. Like every recovery-action kind, it is an evidence-predicate scan; no new index is added. - The settle is the existing worker's function with all its fence checks. The reconciler is a backstop for that worker, not a new release rule. ## Model Used - Claude Opus 5.5 (`claude-opus-5-5`), Anthropic, with tool use and code execution in Claude Code. ## 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 Opus 5.5 <noreply@anthropic.com>