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DottaandClaude Opus 5.5
68db7ed9e3
## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - After a restart, recovery decides that an in-progress record's owner is gone and takes it over > - Two of those proofs use `kill(pid, 0)` on the local host. A pid that is dead here says nothing about a process on another host or in another PID namespace > - So a controller or runtime-control owner that is still alive elsewhere can be taken over while it still runs > - This pull request records the owner's PID space (the existing `controller-process-identity` host hash) and judges a pid only in that same space > - The benefit is that a different host is never proof. Those records follow their existing lease or TTL instead ## Linked Issues or Issue Description **Bug description** The Phase 0 ownership inventory (finding 2) found three proofs that accept "the pid is dead here" as proof for an owner on another host: `evaluateNativeControllerTakeover` (`native_run_finalizations` has no host column), the runtime-control sweep (`workspace-operations.ts`), and the orphan reaper `terminalizeOrphanedRunningRun`. Only `controllerProcessExited` checked the host. **Steps to reproduce** 1. Run two control-plane processes on different hosts, or in different PID namespaces, against one database. 2. Let host A own a native finalization lease or a runtime-control operation. 3. On host B, run restart recovery. If A's pid number is not alive on B, B takes over the live owner. **Expected behavior** An owner whose PID space differs from this process's, or cannot be read, is unprovable. Its record waits for its lease, fence, or TTL. Refs #19846 ## What Changed - Migration `0441`: add nullable `native_run_finalizations.controller_host_hash`. - `controller-process-identity.ts`: export `currentProcessSpaceHash()` and `sameProcessSpace()`. An unreadable space is stored as `"unknown"`, which never matches. - `native-restart-recovery.ts`: `currentNativeControllerIdentity` carries `hostHash`, which both coordinator claim writes (`native-restart-recovery.ts`, `native-session-executor.ts`) store. `evaluateNativeControllerTakeover` returns `controller_host_unprovable` before any pid probe when the recorded space is not this one. `native-dead-controller-result-lease.ts` selects the column. - `workspace-operations.ts`: runtime-control owner stamps record `hostHash`. `ownerProcessProvenGone` requires the same PID space (EPERM = alive), otherwise the existing staleness TTL applies. - Not in this PR: the orphan reaper `terminalizeOrphanedRunningRun`. `heartbeat_runs` has no host for `process_pid`, and its writers are spread across legacy and native paths. It follows as a separate PR with its own column. ## Verification - `npx vitest run src/services/native-runtime/native-restart-recovery.test.ts src/__tests__/workspace-runtime-control-recovery.test.ts`: 55 passed. New cases cover another host and an unreadable space (dead and recycled pid) for takeover, plus another host, unreadable space, and legacy stamp for the sweep. The sweep cases also confirm that the TTL still reclaims after the heartbeat lapses. - Red before the fix: the 5 new cases fail on the old code. Green after. - `native-controller-recovery.integration.test.ts`, `native-failed-run-owner-release.test.ts`, `native-startup-cleanup-recovery.test.ts`: 71 passed. - `pnpm db:generate` produced `0441_lucky_chameleon.sql` (one `ADD COLUMN`) and pruned to five snapshots. `pnpm --filter @paperclipai/db check:migrations` passed. Server `tsc --noEmit` shows no errors in the changed files. ## Risks - Previous-release story: `native_run_finalizations` rows saved before this column have `controller_host_hash = null`. They keep the previous local dead-pid proof for this release. Making them unprovable would leave every native run in flight at the upgrade in `awaiting_evidence` with no TTL, because local takeovers have no lease fallback. Rows written by this release onward are strict. Runtime-control stamps without `hostHash` are strict now, because that path has a staleness TTL. - Owners built from other receipts (workspace finalization owner, workspace stop proof) pass no host and keep the previous behavior. Track 2's shared `OwnerStamp` should absorb them. - A new row on a host that really moved (redeploy onto a new machine) waits for its lease or an operator instead of being taken over by pid. That is the intended "different host is never proof" rule. - No new I/O before `turn.start`. The hash is computed once at module load. ## Model Used - Claude Opus 5.5 (`claude-opus-5-5`), Anthropic, used 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>