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DottaandPaperclip
848e659bc6
## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Heartbeat execution prepares a provider session before dispatch. > - The same executor also owns workspace setup, admission, cleanup, and recovery. > - Session freshness and compaction form a separate responsibility with explicit inputs and results. > - This pull request moves those two session phases into one module and keeps their order around workspace preparation. > - The benefit is a shorter executor with unchanged session behavior. ## Linked Issues or Issue Description **What existing behavior does this improve?** Maintenance of heartbeat execution. This continues the extraction series after #15872. **Current behavior** `heartbeat.ts` has 4,989 lines and 206,650 bytes. Session config fingerprints, resume selection, credential compatibility, and compaction are embedded in the executor. **Proposed behavior** The executor calls `prepareHeartbeatSession` before workspace preparation and `resolveHeartbeatAdapterSession` after it. `heartbeat.ts` has 4,740 lines and 195,258 bytes. The new cohesive module has 385 lines and 19,518 bytes. **Reason and benefit** A reviewer can find session policy in one module. Runtime acquisition, admission gates, and cleanup remain in the executor. Related open work includes #15787 and #15142; this PR does not change either policy. **Breaking changes** None intended. Existing public helper exports remain available. ## What Changed - Move 267 lines into `server/src/services/heartbeat/session-preparation.ts` with typed task, config, workspace, and session inputs. - Keep config fingerprints and context mutations on the same objects. Return compaction and adapter-session results to existing consumers. - Add four real-PostgreSQL characterization tests through heartbeat wakeup and adapter dispatch. - Document the two session preparation phases. ## Verification - Before extraction: four new characterization tests pass; 180 existing workspace/session tests pass. - After extraction: 205 tests pass across session preparation, workspace/session policy, managed-account session compatibility, and accepted-plan refresh. No skips. - `pnpm -r typecheck` and `pnpm build` pass. - Normalized syntax comparison: both moved blocks and the reconstructed executor, including public exports, match the base. - Isolated browser acceptance: 2/2 pass. A real process worker completes after automatic recovery; persistent timeouts stop after three attempts. Both terminal states survive reload. - All hosted CI gates pass on `d33f8506a7`, including the complete test shards, typecheck, build, and browser suites. The duplicate local `pnpm test:run` was interrupted after hosted CI passed; it is not claimed as a full local pass. - Greptile: 5/5 on this head, with no review threads. ## Risks - Session freshness can alter provider context if a dependency is omitted. Typed inputs and passing-before/passing-after dispatch tests cover unchanged resumes, model changes, tool refresh, and compaction. - The module acquires no runtime resource. Workspace preparation still occurs between the two phases. - Live external providers are not exercised; browser acceptance uses a real process fixture in a disposable app. ## Model Used OpenAI Codex, based on GPT-6, assisted with reasoning, code edits, tool execution, and verification. The exact deployment 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 - [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>