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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - GitHub connections send review requests to an assigned agent. > - A PR needs one main comment that shows its current review state. > - The response ledger used one comment per incoming request. Pushes and follow-up messages created more placeholders. > - Thread subscriptions also accepted requests addressed to external bots. Recovery could leave an acknowledged request without a final notice. > - This pull request shares the main PR comment, filters other recipients, and reconciles stopped work. ## Linked Issues or Issue Description Related: #16874 showed the repeated placeholders. #15416 introduced the per-request response path. The prior summary path used one PR-level marker. **What happened?** Repeated pushes created new main PR comments. A subscribed `@greptile review` message also woke the Paperclip bot. If execution stopped before staging a milestone, its comment could keep claiming that work was active. **Expected behavior** One bot keeps one main comment per PR. Progress and review results update it. A message addressed to another recipient does not wake the bot unless it also explicitly mentions this bot. Stopped work gets an accurate notice. **Steps to reproduce** 1. Accept two review requests in one PR conversation. 2. Add `@greptile review` to that subscribed conversation. 3. Fail the assigned run before it stages a milestone. Run channel maintenance. ## What Changed - Add a durable main PR response target. Keep per-request receipts and the existing publication lease. - Recover the target from App-owned provider markers. Adopt older placeholders and point verified duplicates to the current review. - Use a queued notice before a PR run starts. Preserve version ordering and final responses. - Filter leading mentions addressed to another recipient. Explicit mentions of this bot take precedence. Incidental mentions keep normal thread behavior. - Reconcile acknowledged requests after terminal execution. Show paused state for saved requests on a blocked task. Preserve newer work and confirmed or uncertain tool delivery. - Keep a request open when its stale acknowledgement is suppressed. Close placeholders after replies published elsewhere. Retire old coalesced placeholders before replacing their receipts. Resolve native request identity when legacy wake fields are absent. - Update guidance, connection documentation, and feature/access maps. ## Verification - Red: all three behavioral regressions failed on the original code. A second review created a second comment; an external-bot request was processed; stopped execution retained its working placeholder. - Green: the same three cases passed after the fixes. - Review regressions also failed before their repairs: a delayed acknowledgement closed a new request; normal and stored formal-review receipts left a live placeholder; coalesced completion lost a duplicate receipt; native terminal work without legacy wake fields stayed queued. All 13 combined regression and safety cases passed after repair. - The same legacy receipt-loss bug was also reproduced in the superseded-acknowledgement branch. Its four affected cases passed after adding retirement before that receipt replacement. - A further review regression reproduced paused requests rejecting resumed progress and skipping stopped-run cleanup. Four cases failed before repair; all eight resume and neighboring safety cases passed afterward. Both paused-notice branches keep the request open. - Repeated paused maintenance reproduced two needless GitHub edits. The writer now skips an identical complete comment body. Nine affected cases passed, covering repeated maintenance, resumption, stopped work, final assessment preservation, and main-comment reuse. - Safety cases cover lost receipts, legacy adoption, newer progress, published assessments, provider-verified mention aliases, and old replies that must not complete new requests. - `pnpm -r typecheck`, `pnpm build`, map validation, and module boundaries passed. The server TypeScript check passed after the final repair. The broader local GitHub workflow and policy run passed 188 tests. Full CI passed on the final commit (`554979d79285b68bcbf90cd639e3d2d053f4ea4b`), including all three chat shards, server/workspace/Runner suites, typecheck, build, and E2E gates. Greptile is 5/5 with no open review findings. One serialized job received a runner shutdown signal mid-test; its single retry passed. - Preserved failure evidence: the first CI run exposed an overbroad recipient filter and an old queued-text assertion. The next commit passed all three CI chat shards. Greptile then found the receipt transitions covered by the new regressions above. Local full-suite runs were stopped when those defects required source changes; no clean full local pass is claimed. - Tests use real PostgreSQL and controlled provider responses. They do not establish a live GitHub App rollout. The original instance needs the fixed server before its comments change. ## Risks - Leading mentions now select a recipient even when that account has no Paperclip connection. A leading human mention also selects that person. Mid-message incidental mentions retain normal subscription behavior. - Existing comment adoption edits only comments proven by this endpoint's request ledger or prior summary marker and App identity. Deleted and replaced comments remain protected. - Failure cleanup uses current authority and does not replace newer progress or unresolved provider writes. It does not restart failed execution. - No schema migration is required. ## Model Used OpenAI Codex, GPT-6. The exact serving model ID and context-window size are not exposed in this session. The model used reasoning, tools, code execution, and browser inspection. ## 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>