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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Heartbeat execution prepares task context before it selects an environment and starts an adapter. > - This preparation still occupied 319 lines inside the executor after the earlier extractions. > - It combines continuation summaries, comments, prompt variants, communication guidance, and redaction. > - This pull request moves that responsibility into one typed module under `services/heartbeat/`. > - The executor keeps admission, resource ownership, dispatch, and cleanup ordering together. > - The result makes the preparation phase easier to find and test without changing execution behavior. ## Linked Issues or Issue Description Refs #15825, #15807. This continues the incremental heartbeat extraction series. A search found no duplicate task-context extraction. **What existing behavior does this improve?** Maintenance and review of heartbeat task context preparation. **Current behavior** The executor assembles prompts and trust-filtered context inline. This hides its execution phases among preparation details. **Proposed behavior** Call `prepareHeartbeatTaskContext` at the same point in execution. Preserve statement order, prompt contents, public exports, and the shared run context object. ## What Changed - Move task context assembly to `server/src/services/heartbeat/task-context.ts`. Inputs group task state, policy, and two existing service methods. Results preserve the continuation and wake values used by later runtime selection and dispatch. - Keep company-scoped loading, quarantined-content filtering, secret redaction, and revision hashing in their original order. Add no execution resource acquisition. - Add four public-path integration tests before the move. Cover prompt variants and redacted revisions, quarantined summaries/comments, a mixed-company wake batch, and stale caller fields. - Extend the real process worker in the opt-in browser suite to check persisted prompt variants and the description revision before it completes its task. - Update the module map and acceptance-test documentation. - Reduce `heartbeat.ts` from 5,314 lines / 220,784 bytes to 4,989 lines / 206,650 bytes. The new module has 376 lines / 15,912 bytes. ## Verification - Before the move: 11 existing prompt tests and all four new characterization tests passed against the inline implementation. - Normalized syntax comparison passed for all 319 moved lines and the remaining orchestrator, including public exports. Imports and the typed boundary were reviewed separately. - `pnpm -r typecheck` passed. - `pnpm build` passed. - The clean post-move focused run passed all 26 tests in five files, with no skips: task-context characterization, task-markdown, Slack invitation, accepted-plan workspace refresh, and run-preparation. - The local `pnpm test:run` attempt was interrupted after database failures while the Mac exhausted its shared-memory slots. All 15 affected native warm-ownership database cases passed in an isolated rerun after the browser instance stopped; the other 666 cases in that file were excluded by the test-name filter. The interrupted command is not a full-suite pass. Full CI passed on `6bf86cfdc07e7fe34015f7b719218639f4232510`: 55 successful checks and two optional Storybook checks skipped. Greptile reviewed the latest commit at 5/5; its one earlier worker-test finding is fixed and resolved. - Browser E2E passed both scenarios on the final code: persistent timeouts stop after three runs and survive reload; one timeout recovers without manual Retry, verifies task-context prompt variants/revision and preserved workspace files in a real process, then completes through the run-scoped API. The first recovery attempt exposed an incorrect new test assertion because the fixture title equals its description. The worker now checks the description section specifically; the corrected recovery scenario passed in 55.9 seconds. The original failure trace was preserved. These tests use a deterministic process adapter and make no live model calls. ## Risks This is a behavior-preserving extraction. The main risks are changed closure bindings, missing return values, or changed preparation order. Typed inputs, public-path tests, and syntax comparison cover those risks. The run context is still the same mutable object. The helper acquires no leases or processes. It introduces no schema, API, or prompt policy changes. The first post-move database run skipped cases due to host resource exhaustion. All 26 focused cases passed on the subsequent clean run. Browser E2E passed after the worker assertion fix. The full local suite remains incomplete. All 15 native warm-ownership database cases passed on their isolated rerun; The full CI test suite passed on the final commit. ## Model Used OpenAI Codex, based on GPT-6, with reasoning, repository inspection, code execution, and test tools. The host does not expose the exact deployment model ID or context-window size. ## 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>