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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - Each heartbeat run gets a scratch directory in the system temp folder > - Each process attempt makes a new directory with a marker file > - Cleanup removes only the directory of the current attempt > - A restart kills the old attempt, so its directory stays forever > - One restart storm left 83 directories across 78 runs > - This pull request sweeps those directories when the run ends and at startup recovery > - The benefit is that temp space no longer fills with leftover directories ## Linked Issues or Issue Description **What happened?** Run scratch directories made before a restart are never removed. A restart storm left 83 `paperclip-run-*` directories across 78 runs. Each holds only `.paperclip-run-scratch.json`. **Steps to reproduce** 1. Start a run that makes a scratch directory. 2. Kill the server process and start it again. 3. Let the run finish. 4. List `$TMPDIR/paperclip-run-*`. The old directory is still there. **Expected behavior** The old directory is removed after the run ends, or at startup. ## What Changed - Add `sweepOrphanedRunScratch` in `server/src/services/run-scratch.ts`. - The sweep removes a directory only if it has a valid regular-file marker and its run is terminal in this instance database. It keeps a directory whose run it cannot see, because another instance can share the temp root. - The sweep keeps active runs, unmarked directories, symlinks, and directories outside `paperclip-run-*`. - The sweep checks each directory again before removal and bounds the scan (500, with a rotating start so kept entries do not starve later ones) and removals (100). A per-run sweep filters by directory name first. Marker run ids that are not UUIDs never reach the database query. - Call the sweep after the current attempt's cleanup in `heartbeat.ts`, for that run only. - Call the sweep in `reapOrphanedRuns` (startup recovery) with run status from the database. ## Verification - `pnpm --filter @paperclipai/server exec vitest run src/services/run-scratch.test.ts` - New tests cover: leftover directories of a terminal run are removed, an active run is kept, an unmarked directory is kept, a symlink is not followed, and removals are bounded. ## Risks - Low risk. The sweep acts only on marked directories of terminal runs. - A directory left by a previous attempt could hold a live grandchild process. The sweep does not check old process groups. The run is already terminal. ## Model Used - Claude, claude-opus-4-5 class model via Claude Code, with tool use and code execution. ## 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>