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## Thinking Path > - Paperclip manages AI agents and their work. > - A remote runner can survive a controller restart. > - Recovery renews its execution lease during slow preparation. > - The native executor then shares that renewal timer. > - Preparation kept its reference until all finalization finished. A tick after lease release treated completion as ownership loss and detached the retained runner. > - A Linux continuity test also found that buffered wire events could arrive before their connection was registered. Cleanup then kept a completed promise under an undefined key and never finished. > - This pull request transfers renewal ownership after execution acquires its reference. It also registers each connection before wire callbacks can run. > - Recovered turns can complete, retain the warm runner, and settle connection cleanup. ## Linked Issues or Issue Description **What happened?** A recovered remote run could complete, release its coordinator lease, then detach during instruction collection. The next turn could find the old runner still using the ingress port. Recovery then stopped because it could not prove process ownership. **Expected behavior** Preparation keeps the lease alive until execution owns renewal. Execution stops renewal before releasing the lease. Actual ownership loss still detaches the runner. Buffered wire callbacks must use the registered connection, and cleanup must finish. **Steps to reproduce** 1. Recover an in-flight remote runner after a controller restart. 2. Let the recovered turn complete. 3. Hold instruction collection open through the next lease renewal tick. 4. Send a follow-up that needs the retained runner. Related: #17439 introduced remote controller recovery. #18011 preserves checkpoint authority through warm preparation. This change fixes the lifetime of preparation's renewal reference. ## What Changed - Pass an internal lease-acquired callback from recovery through heartbeat dispatch. - Release preparation's renewal reference after the executor registers its own. Keep final cleanup for exits before dispatch. - Add a PostgreSQL regression for completion while finalization is still pending. Cover callback forwarding, acquire-before-release ordering, and failure before dispatch. - Register the authority connection before subscribing to wire events. Handle an immediate close before accepting buffered data. - Add regressions for a message or close delivered during subscription. - Extend Linux continuity coverage with preparation renewal and delayed instruction collection after recovery. - Update the continuity guide and session verification recipes. ## Verification - The new recovery regression failed before the fix because renewal detached the runner after lease release. The 76 recovery, renewal, and dispatch tests then passed. The final ordering and early-exit checks passed again after replacing fixed sleeps with controlled interval ticks. - Both buffered-wire regressions failed before the connection fix. All 170 control-plane tests passed afterward. Existing tests cover stale authority, ownership loss, pending operations, and closed ingress. - Linux ARM64 acceptance passed at `a7daefacceb8bd994d0b79d284cdf54f3e3829d1`, with Node 24.19.0, PostgreSQL, the real Rust runner, TLS ingress, and a deterministic Codex protocol fixture. The test interrupted the first turn, recovered it, held finalization open for a renewal interval, and completed two follow-ups. It retained one provider process, three turns in one history, and the same runner identity. Final suspension and connection cleanup completed. The ordinary warm-reuse case also passed three turns with one provider process. - Earlier Linux attempts completed the turns but hung during cleanup. A debugger found a fulfilled promise keyed by an undefined connection. The regression reproduces that defect. One later setup attempt timed out while staging an unstripped 373 MB debug binary. The passing run used the same binary with debug symbols removed. - Reproduce Linux acceptance with the `same-server` case in `doc/testing-native-remote-continuity.md`. - `pnpm -r typecheck`, `pnpm build`, map validation, and `git diff --check` passed at the final revision. The full local `pnpm test:run` command was attempted, but the serial run had not finished after 13 minutes. It was stopped after the equivalent CI lanes passed. It is not counted as a full local pass. - Greptile and the Paperclip review both scored the final revision 5/5 with no findings. All Runner verification lanes passed. The first CI attempt hit timing failures in voice recovery, agent YAML configuration, and the task-title outage browser test. The full YAML and voice-recovery files passed locally (88 and 19 tests). These paths were unchanged and passed on the prior revision. All three passed on the single retry. Final current-head status: 55 successful checks, one neutral check, and two skipped Storybook checks. No pending or failed checks remain. - Live Daytona/model acceptance and recovery of the hosted task remain unverified. This PR does not deploy the change. ## Risks - Releasing preparation before execution starts renewal could leave a gap in authority. The callback runs after the executor registers its reference. - Preparation errors must not leak renewal. The recovery promise retains idempotent final cleanup. - Wire callbacks can run during subscription. Message and close regressions check that registration is complete before either callback runs. - No schema, API, model, permission, lease duration, or retry policy changes. ## Model Used OpenAI GPT-6 through Codex, with reasoning, repository tools, code execution, and browser diagnostics. The exact serving model identifier and context window 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 - [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>